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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> | |
b108d976 | 41 | #include <linux/export.h> |
8c65b4a6 | 42 | #include <linux/string.h> |
0e0ec7e0 | 43 | #include <linux/slab.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 | ||
71eeba16 MA |
82 | int ib_rate_to_mbps(enum ib_rate rate) |
83 | { | |
84 | switch (rate) { | |
85 | case IB_RATE_2_5_GBPS: return 2500; | |
86 | case IB_RATE_5_GBPS: return 5000; | |
87 | case IB_RATE_10_GBPS: return 10000; | |
88 | case IB_RATE_20_GBPS: return 20000; | |
89 | case IB_RATE_30_GBPS: return 30000; | |
90 | case IB_RATE_40_GBPS: return 40000; | |
91 | case IB_RATE_60_GBPS: return 60000; | |
92 | case IB_RATE_80_GBPS: return 80000; | |
93 | case IB_RATE_120_GBPS: return 120000; | |
94 | case IB_RATE_14_GBPS: return 14062; | |
95 | case IB_RATE_56_GBPS: return 56250; | |
96 | case IB_RATE_112_GBPS: return 112500; | |
97 | case IB_RATE_168_GBPS: return 168750; | |
98 | case IB_RATE_25_GBPS: return 25781; | |
99 | case IB_RATE_100_GBPS: return 103125; | |
100 | case IB_RATE_200_GBPS: return 206250; | |
101 | case IB_RATE_300_GBPS: return 309375; | |
102 | default: return -1; | |
103 | } | |
104 | } | |
105 | EXPORT_SYMBOL(ib_rate_to_mbps); | |
106 | ||
07ebafba TT |
107 | enum rdma_transport_type |
108 | rdma_node_get_transport(enum rdma_node_type node_type) | |
109 | { | |
110 | switch (node_type) { | |
111 | case RDMA_NODE_IB_CA: | |
112 | case RDMA_NODE_IB_SWITCH: | |
113 | case RDMA_NODE_IB_ROUTER: | |
114 | return RDMA_TRANSPORT_IB; | |
115 | case RDMA_NODE_RNIC: | |
116 | return RDMA_TRANSPORT_IWARP; | |
117 | default: | |
118 | BUG(); | |
119 | return 0; | |
120 | } | |
121 | } | |
122 | EXPORT_SYMBOL(rdma_node_get_transport); | |
123 | ||
a3f5adaf EC |
124 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) |
125 | { | |
126 | if (device->get_link_layer) | |
127 | return device->get_link_layer(device, port_num); | |
128 | ||
129 | switch (rdma_node_get_transport(device->node_type)) { | |
130 | case RDMA_TRANSPORT_IB: | |
131 | return IB_LINK_LAYER_INFINIBAND; | |
132 | case RDMA_TRANSPORT_IWARP: | |
133 | return IB_LINK_LAYER_ETHERNET; | |
134 | default: | |
135 | return IB_LINK_LAYER_UNSPECIFIED; | |
136 | } | |
137 | } | |
138 | EXPORT_SYMBOL(rdma_port_get_link_layer); | |
139 | ||
1da177e4 LT |
140 | /* Protection domains */ |
141 | ||
142 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
143 | { | |
144 | struct ib_pd *pd; | |
145 | ||
b5e81bf5 | 146 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
147 | |
148 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
149 | pd->device = device; |
150 | pd->uobject = NULL; | |
1da177e4 LT |
151 | atomic_set(&pd->usecnt, 0); |
152 | } | |
153 | ||
154 | return pd; | |
155 | } | |
156 | EXPORT_SYMBOL(ib_alloc_pd); | |
157 | ||
158 | int ib_dealloc_pd(struct ib_pd *pd) | |
159 | { | |
160 | if (atomic_read(&pd->usecnt)) | |
161 | return -EBUSY; | |
162 | ||
163 | return pd->device->dealloc_pd(pd); | |
164 | } | |
165 | EXPORT_SYMBOL(ib_dealloc_pd); | |
166 | ||
167 | /* Address handles */ | |
168 | ||
169 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
170 | { | |
171 | struct ib_ah *ah; | |
172 | ||
173 | ah = pd->device->create_ah(pd, ah_attr); | |
174 | ||
175 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
176 | ah->device = pd->device; |
177 | ah->pd = pd; | |
178 | ah->uobject = NULL; | |
1da177e4 LT |
179 | atomic_inc(&pd->usecnt); |
180 | } | |
181 | ||
182 | return ah; | |
183 | } | |
184 | EXPORT_SYMBOL(ib_create_ah); | |
185 | ||
4e00d694 SH |
186 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
187 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) | |
513789ed | 188 | { |
513789ed HR |
189 | u32 flow_class; |
190 | u16 gid_index; | |
191 | int ret; | |
192 | ||
4e00d694 SH |
193 | memset(ah_attr, 0, sizeof *ah_attr); |
194 | ah_attr->dlid = wc->slid; | |
195 | ah_attr->sl = wc->sl; | |
196 | ah_attr->src_path_bits = wc->dlid_path_bits; | |
197 | ah_attr->port_num = port_num; | |
513789ed HR |
198 | |
199 | if (wc->wc_flags & IB_WC_GRH) { | |
4e00d694 SH |
200 | ah_attr->ah_flags = IB_AH_GRH; |
201 | ah_attr->grh.dgid = grh->sgid; | |
513789ed | 202 | |
4e00d694 | 203 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
513789ed HR |
204 | &gid_index); |
205 | if (ret) | |
4e00d694 | 206 | return ret; |
513789ed | 207 | |
4e00d694 | 208 | ah_attr->grh.sgid_index = (u8) gid_index; |
497677ab | 209 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
4e00d694 | 210 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
47645d8d | 211 | ah_attr->grh.hop_limit = 0xFF; |
4e00d694 | 212 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
513789ed | 213 | } |
4e00d694 SH |
214 | return 0; |
215 | } | |
216 | EXPORT_SYMBOL(ib_init_ah_from_wc); | |
217 | ||
218 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
219 | struct ib_grh *grh, u8 port_num) | |
220 | { | |
221 | struct ib_ah_attr ah_attr; | |
222 | int ret; | |
223 | ||
224 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); | |
225 | if (ret) | |
226 | return ERR_PTR(ret); | |
513789ed HR |
227 | |
228 | return ib_create_ah(pd, &ah_attr); | |
229 | } | |
230 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
231 | ||
1da177e4 LT |
232 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
233 | { | |
234 | return ah->device->modify_ah ? | |
235 | ah->device->modify_ah(ah, ah_attr) : | |
236 | -ENOSYS; | |
237 | } | |
238 | EXPORT_SYMBOL(ib_modify_ah); | |
239 | ||
240 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
241 | { | |
242 | return ah->device->query_ah ? | |
243 | ah->device->query_ah(ah, ah_attr) : | |
244 | -ENOSYS; | |
245 | } | |
246 | EXPORT_SYMBOL(ib_query_ah); | |
247 | ||
248 | int ib_destroy_ah(struct ib_ah *ah) | |
249 | { | |
250 | struct ib_pd *pd; | |
251 | int ret; | |
252 | ||
253 | pd = ah->pd; | |
254 | ret = ah->device->destroy_ah(ah); | |
255 | if (!ret) | |
256 | atomic_dec(&pd->usecnt); | |
257 | ||
258 | return ret; | |
259 | } | |
260 | EXPORT_SYMBOL(ib_destroy_ah); | |
261 | ||
d41fcc67 RD |
262 | /* Shared receive queues */ |
263 | ||
264 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
265 | struct ib_srq_init_attr *srq_init_attr) | |
266 | { | |
267 | struct ib_srq *srq; | |
268 | ||
269 | if (!pd->device->create_srq) | |
270 | return ERR_PTR(-ENOSYS); | |
271 | ||
272 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
273 | ||
274 | if (!IS_ERR(srq)) { | |
275 | srq->device = pd->device; | |
276 | srq->pd = pd; | |
277 | srq->uobject = NULL; | |
278 | srq->event_handler = srq_init_attr->event_handler; | |
279 | srq->srq_context = srq_init_attr->srq_context; | |
96104eda | 280 | srq->srq_type = srq_init_attr->srq_type; |
418d5130 SH |
281 | if (srq->srq_type == IB_SRQT_XRC) { |
282 | srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; | |
283 | srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; | |
284 | atomic_inc(&srq->ext.xrc.xrcd->usecnt); | |
285 | atomic_inc(&srq->ext.xrc.cq->usecnt); | |
286 | } | |
d41fcc67 RD |
287 | atomic_inc(&pd->usecnt); |
288 | atomic_set(&srq->usecnt, 0); | |
289 | } | |
290 | ||
291 | return srq; | |
292 | } | |
293 | EXPORT_SYMBOL(ib_create_srq); | |
294 | ||
295 | int ib_modify_srq(struct ib_srq *srq, | |
296 | struct ib_srq_attr *srq_attr, | |
297 | enum ib_srq_attr_mask srq_attr_mask) | |
298 | { | |
7ce5eacb DB |
299 | return srq->device->modify_srq ? |
300 | srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : | |
301 | -ENOSYS; | |
d41fcc67 RD |
302 | } |
303 | EXPORT_SYMBOL(ib_modify_srq); | |
304 | ||
305 | int ib_query_srq(struct ib_srq *srq, | |
306 | struct ib_srq_attr *srq_attr) | |
307 | { | |
308 | return srq->device->query_srq ? | |
309 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
310 | } | |
311 | EXPORT_SYMBOL(ib_query_srq); | |
312 | ||
313 | int ib_destroy_srq(struct ib_srq *srq) | |
314 | { | |
315 | struct ib_pd *pd; | |
418d5130 SH |
316 | enum ib_srq_type srq_type; |
317 | struct ib_xrcd *uninitialized_var(xrcd); | |
318 | struct ib_cq *uninitialized_var(cq); | |
d41fcc67 RD |
319 | int ret; |
320 | ||
321 | if (atomic_read(&srq->usecnt)) | |
322 | return -EBUSY; | |
323 | ||
324 | pd = srq->pd; | |
418d5130 SH |
325 | srq_type = srq->srq_type; |
326 | if (srq_type == IB_SRQT_XRC) { | |
327 | xrcd = srq->ext.xrc.xrcd; | |
328 | cq = srq->ext.xrc.cq; | |
329 | } | |
d41fcc67 RD |
330 | |
331 | ret = srq->device->destroy_srq(srq); | |
418d5130 | 332 | if (!ret) { |
d41fcc67 | 333 | atomic_dec(&pd->usecnt); |
418d5130 SH |
334 | if (srq_type == IB_SRQT_XRC) { |
335 | atomic_dec(&xrcd->usecnt); | |
336 | atomic_dec(&cq->usecnt); | |
337 | } | |
338 | } | |
d41fcc67 RD |
339 | |
340 | return ret; | |
341 | } | |
342 | EXPORT_SYMBOL(ib_destroy_srq); | |
343 | ||
1da177e4 LT |
344 | /* Queue pairs */ |
345 | ||
0e0ec7e0 SH |
346 | static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) |
347 | { | |
348 | struct ib_qp *qp = context; | |
349 | ||
350 | list_for_each_entry(event->element.qp, &qp->open_list, open_list) | |
351 | event->element.qp->event_handler(event, event->element.qp->qp_context); | |
352 | } | |
353 | ||
d3d72d90 SH |
354 | static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) |
355 | { | |
356 | mutex_lock(&xrcd->tgt_qp_mutex); | |
357 | list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); | |
358 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
359 | } | |
360 | ||
0e0ec7e0 SH |
361 | static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, |
362 | void (*event_handler)(struct ib_event *, void *), | |
363 | void *qp_context) | |
d3d72d90 | 364 | { |
0e0ec7e0 SH |
365 | struct ib_qp *qp; |
366 | unsigned long flags; | |
367 | ||
368 | qp = kzalloc(sizeof *qp, GFP_KERNEL); | |
369 | if (!qp) | |
370 | return ERR_PTR(-ENOMEM); | |
371 | ||
372 | qp->real_qp = real_qp; | |
373 | atomic_inc(&real_qp->usecnt); | |
374 | qp->device = real_qp->device; | |
375 | qp->event_handler = event_handler; | |
376 | qp->qp_context = qp_context; | |
377 | qp->qp_num = real_qp->qp_num; | |
378 | qp->qp_type = real_qp->qp_type; | |
379 | ||
380 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
381 | list_add(&qp->open_list, &real_qp->open_list); | |
382 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
383 | ||
384 | return qp; | |
385 | } | |
386 | ||
387 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, | |
388 | struct ib_qp_open_attr *qp_open_attr) | |
389 | { | |
390 | struct ib_qp *qp, *real_qp; | |
391 | ||
392 | if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) | |
393 | return ERR_PTR(-EINVAL); | |
394 | ||
395 | qp = ERR_PTR(-EINVAL); | |
d3d72d90 | 396 | mutex_lock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 SH |
397 | list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { |
398 | if (real_qp->qp_num == qp_open_attr->qp_num) { | |
399 | qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, | |
400 | qp_open_attr->qp_context); | |
401 | break; | |
402 | } | |
403 | } | |
d3d72d90 | 404 | mutex_unlock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 | 405 | return qp; |
d3d72d90 | 406 | } |
0e0ec7e0 | 407 | EXPORT_SYMBOL(ib_open_qp); |
d3d72d90 | 408 | |
1da177e4 LT |
409 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
410 | struct ib_qp_init_attr *qp_init_attr) | |
411 | { | |
0e0ec7e0 | 412 | struct ib_qp *qp, *real_qp; |
b42b63cf | 413 | struct ib_device *device; |
1da177e4 | 414 | |
b42b63cf SH |
415 | device = pd ? pd->device : qp_init_attr->xrcd->device; |
416 | qp = device->create_qp(pd, qp_init_attr, NULL); | |
1da177e4 LT |
417 | |
418 | if (!IS_ERR(qp)) { | |
0e0ec7e0 SH |
419 | qp->device = device; |
420 | qp->real_qp = qp; | |
421 | qp->uobject = NULL; | |
422 | qp->qp_type = qp_init_attr->qp_type; | |
b42b63cf | 423 | |
e47e321a | 424 | atomic_set(&qp->usecnt, 0); |
b42b63cf | 425 | if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { |
0e0ec7e0 SH |
426 | qp->event_handler = __ib_shared_qp_event_handler; |
427 | qp->qp_context = qp; | |
b42b63cf SH |
428 | qp->pd = NULL; |
429 | qp->send_cq = qp->recv_cq = NULL; | |
430 | qp->srq = NULL; | |
431 | qp->xrcd = qp_init_attr->xrcd; | |
432 | atomic_inc(&qp_init_attr->xrcd->usecnt); | |
0e0ec7e0 | 433 | INIT_LIST_HEAD(&qp->open_list); |
0e0ec7e0 SH |
434 | |
435 | real_qp = qp; | |
436 | qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, | |
437 | qp_init_attr->qp_context); | |
438 | if (!IS_ERR(qp)) | |
439 | __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); | |
440 | else | |
441 | real_qp->device->destroy_qp(real_qp); | |
b42b63cf | 442 | } else { |
0e0ec7e0 SH |
443 | qp->event_handler = qp_init_attr->event_handler; |
444 | qp->qp_context = qp_init_attr->qp_context; | |
b42b63cf SH |
445 | if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { |
446 | qp->recv_cq = NULL; | |
447 | qp->srq = NULL; | |
448 | } else { | |
449 | qp->recv_cq = qp_init_attr->recv_cq; | |
450 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
451 | qp->srq = qp_init_attr->srq; | |
452 | if (qp->srq) | |
453 | atomic_inc(&qp_init_attr->srq->usecnt); | |
454 | } | |
455 | ||
456 | qp->pd = pd; | |
457 | qp->send_cq = qp_init_attr->send_cq; | |
458 | qp->xrcd = NULL; | |
459 | ||
460 | atomic_inc(&pd->usecnt); | |
461 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
462 | } | |
1da177e4 LT |
463 | } |
464 | ||
465 | return qp; | |
466 | } | |
467 | EXPORT_SYMBOL(ib_create_qp); | |
468 | ||
8a51866f RD |
469 | static const struct { |
470 | int valid; | |
b42b63cf SH |
471 | enum ib_qp_attr_mask req_param[IB_QPT_MAX]; |
472 | enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; | |
8a51866f RD |
473 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
474 | [IB_QPS_RESET] = { | |
475 | [IB_QPS_RESET] = { .valid = 1 }, | |
8a51866f RD |
476 | [IB_QPS_INIT] = { |
477 | .valid = 1, | |
478 | .req_param = { | |
479 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
480 | IB_QP_PORT | | |
481 | IB_QP_QKEY), | |
c938a616 | 482 | [IB_QPT_RAW_PACKET] = IB_QP_PORT, |
8a51866f RD |
483 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
484 | IB_QP_PORT | | |
485 | IB_QP_ACCESS_FLAGS), | |
486 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
487 | IB_QP_PORT | | |
488 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
489 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
490 | IB_QP_PORT | | |
491 | IB_QP_ACCESS_FLAGS), | |
492 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
493 | IB_QP_PORT | | |
494 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
495 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
496 | IB_QP_QKEY), | |
497 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
498 | IB_QP_QKEY), | |
499 | } | |
500 | }, | |
501 | }, | |
502 | [IB_QPS_INIT] = { | |
503 | [IB_QPS_RESET] = { .valid = 1 }, | |
504 | [IB_QPS_ERR] = { .valid = 1 }, | |
505 | [IB_QPS_INIT] = { | |
506 | .valid = 1, | |
507 | .opt_param = { | |
508 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
509 | IB_QP_PORT | | |
510 | IB_QP_QKEY), | |
511 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
512 | IB_QP_PORT | | |
513 | IB_QP_ACCESS_FLAGS), | |
514 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
515 | IB_QP_PORT | | |
516 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
517 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
518 | IB_QP_PORT | | |
519 | IB_QP_ACCESS_FLAGS), | |
520 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
521 | IB_QP_PORT | | |
522 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
523 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
524 | IB_QP_QKEY), | |
525 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
526 | IB_QP_QKEY), | |
527 | } | |
528 | }, | |
529 | [IB_QPS_RTR] = { | |
530 | .valid = 1, | |
531 | .req_param = { | |
532 | [IB_QPT_UC] = (IB_QP_AV | | |
533 | IB_QP_PATH_MTU | | |
534 | IB_QP_DEST_QPN | | |
535 | IB_QP_RQ_PSN), | |
536 | [IB_QPT_RC] = (IB_QP_AV | | |
537 | IB_QP_PATH_MTU | | |
538 | IB_QP_DEST_QPN | | |
539 | IB_QP_RQ_PSN | | |
540 | IB_QP_MAX_DEST_RD_ATOMIC | | |
541 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
542 | [IB_QPT_XRC_INI] = (IB_QP_AV | |
543 | IB_QP_PATH_MTU | | |
544 | IB_QP_DEST_QPN | | |
545 | IB_QP_RQ_PSN), | |
546 | [IB_QPT_XRC_TGT] = (IB_QP_AV | | |
547 | IB_QP_PATH_MTU | | |
548 | IB_QP_DEST_QPN | | |
549 | IB_QP_RQ_PSN | | |
550 | IB_QP_MAX_DEST_RD_ATOMIC | | |
551 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
552 | }, |
553 | .opt_param = { | |
554 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
555 | IB_QP_QKEY), | |
556 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
557 | IB_QP_ACCESS_FLAGS | | |
558 | IB_QP_PKEY_INDEX), | |
559 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
560 | IB_QP_ACCESS_FLAGS | | |
561 | IB_QP_PKEY_INDEX), | |
b42b63cf SH |
562 | [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | |
563 | IB_QP_ACCESS_FLAGS | | |
564 | IB_QP_PKEY_INDEX), | |
565 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | | |
566 | IB_QP_ACCESS_FLAGS | | |
567 | IB_QP_PKEY_INDEX), | |
8a51866f RD |
568 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
569 | IB_QP_QKEY), | |
570 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
571 | IB_QP_QKEY), | |
572 | } | |
573 | } | |
574 | }, | |
575 | [IB_QPS_RTR] = { | |
576 | [IB_QPS_RESET] = { .valid = 1 }, | |
577 | [IB_QPS_ERR] = { .valid = 1 }, | |
578 | [IB_QPS_RTS] = { | |
579 | .valid = 1, | |
580 | .req_param = { | |
581 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
582 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
583 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
584 | IB_QP_RETRY_CNT | | |
585 | IB_QP_RNR_RETRY | | |
586 | IB_QP_SQ_PSN | | |
587 | IB_QP_MAX_QP_RD_ATOMIC), | |
b42b63cf SH |
588 | [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | |
589 | IB_QP_RETRY_CNT | | |
590 | IB_QP_RNR_RETRY | | |
591 | IB_QP_SQ_PSN | | |
592 | IB_QP_MAX_QP_RD_ATOMIC), | |
593 | [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | | |
594 | IB_QP_SQ_PSN), | |
8a51866f RD |
595 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
596 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
597 | }, | |
598 | .opt_param = { | |
599 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
600 | IB_QP_QKEY), | |
601 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
602 | IB_QP_ALT_PATH | | |
603 | IB_QP_ACCESS_FLAGS | | |
604 | IB_QP_PATH_MIG_STATE), | |
605 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
606 | IB_QP_ALT_PATH | | |
607 | IB_QP_ACCESS_FLAGS | | |
608 | IB_QP_MIN_RNR_TIMER | | |
609 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
610 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
611 | IB_QP_ALT_PATH | | |
612 | IB_QP_ACCESS_FLAGS | | |
613 | IB_QP_PATH_MIG_STATE), | |
614 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
615 | IB_QP_ALT_PATH | | |
616 | IB_QP_ACCESS_FLAGS | | |
617 | IB_QP_MIN_RNR_TIMER | | |
618 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
619 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
620 | IB_QP_QKEY), | |
621 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
622 | IB_QP_QKEY), | |
623 | } | |
624 | } | |
625 | }, | |
626 | [IB_QPS_RTS] = { | |
627 | [IB_QPS_RESET] = { .valid = 1 }, | |
628 | [IB_QPS_ERR] = { .valid = 1 }, | |
629 | [IB_QPS_RTS] = { | |
630 | .valid = 1, | |
631 | .opt_param = { | |
632 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
633 | IB_QP_QKEY), | |
4546d31d DB |
634 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
635 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
636 | IB_QP_ALT_PATH | |
637 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
638 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
639 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
640 | IB_QP_ALT_PATH | |
641 | IB_QP_PATH_MIG_STATE | | |
642 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
643 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
644 | IB_QP_ACCESS_FLAGS | | |
645 | IB_QP_ALT_PATH | | |
646 | IB_QP_PATH_MIG_STATE), | |
647 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
648 | IB_QP_ACCESS_FLAGS | | |
649 | IB_QP_ALT_PATH | | |
650 | IB_QP_PATH_MIG_STATE | | |
651 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
652 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
653 | IB_QP_QKEY), | |
654 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
655 | IB_QP_QKEY), | |
656 | } | |
657 | }, | |
658 | [IB_QPS_SQD] = { | |
659 | .valid = 1, | |
660 | .opt_param = { | |
661 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
662 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
663 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
b42b63cf SH |
664 | [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
665 | [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ | |
8a51866f RD |
666 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
667 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
668 | } | |
669 | }, | |
670 | }, | |
671 | [IB_QPS_SQD] = { | |
672 | [IB_QPS_RESET] = { .valid = 1 }, | |
673 | [IB_QPS_ERR] = { .valid = 1 }, | |
674 | [IB_QPS_RTS] = { | |
675 | .valid = 1, | |
676 | .opt_param = { | |
677 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
678 | IB_QP_QKEY), | |
679 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
680 | IB_QP_ALT_PATH | | |
681 | IB_QP_ACCESS_FLAGS | | |
682 | IB_QP_PATH_MIG_STATE), | |
683 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
684 | IB_QP_ALT_PATH | | |
685 | IB_QP_ACCESS_FLAGS | | |
686 | IB_QP_MIN_RNR_TIMER | | |
687 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
688 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
689 | IB_QP_ALT_PATH | | |
690 | IB_QP_ACCESS_FLAGS | | |
691 | IB_QP_PATH_MIG_STATE), | |
692 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
693 | IB_QP_ALT_PATH | | |
694 | IB_QP_ACCESS_FLAGS | | |
695 | IB_QP_MIN_RNR_TIMER | | |
696 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
697 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
698 | IB_QP_QKEY), | |
699 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
700 | IB_QP_QKEY), | |
701 | } | |
702 | }, | |
703 | [IB_QPS_SQD] = { | |
704 | .valid = 1, | |
705 | .opt_param = { | |
706 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
707 | IB_QP_QKEY), | |
708 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
709 | IB_QP_ALT_PATH | |
710 | IB_QP_ACCESS_FLAGS | | |
711 | IB_QP_PKEY_INDEX | | |
712 | IB_QP_PATH_MIG_STATE), | |
713 | [IB_QPT_RC] = (IB_QP_PORT | | |
714 | IB_QP_AV | | |
715 | IB_QP_TIMEOUT | | |
716 | IB_QP_RETRY_CNT | | |
717 | IB_QP_RNR_RETRY | | |
718 | IB_QP_MAX_QP_RD_ATOMIC | | |
719 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
720 | IB_QP_ALT_PATH | |
721 | IB_QP_ACCESS_FLAGS | | |
722 | IB_QP_PKEY_INDEX | | |
723 | IB_QP_MIN_RNR_TIMER | | |
724 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
725 | [IB_QPT_XRC_INI] = (IB_QP_PORT | |
726 | IB_QP_AV | | |
727 | IB_QP_TIMEOUT | | |
728 | IB_QP_RETRY_CNT | | |
729 | IB_QP_RNR_RETRY | | |
730 | IB_QP_MAX_QP_RD_ATOMIC | | |
731 | IB_QP_ALT_PATH | | |
732 | IB_QP_ACCESS_FLAGS | | |
733 | IB_QP_PKEY_INDEX | | |
734 | IB_QP_PATH_MIG_STATE), | |
735 | [IB_QPT_XRC_TGT] = (IB_QP_PORT | | |
736 | IB_QP_AV | | |
737 | IB_QP_TIMEOUT | | |
738 | IB_QP_MAX_DEST_RD_ATOMIC | | |
739 | IB_QP_ALT_PATH | | |
740 | IB_QP_ACCESS_FLAGS | | |
741 | IB_QP_PKEY_INDEX | | |
742 | IB_QP_MIN_RNR_TIMER | | |
743 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
744 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
745 | IB_QP_QKEY), | |
746 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
747 | IB_QP_QKEY), | |
748 | } | |
749 | } | |
750 | }, | |
751 | [IB_QPS_SQE] = { | |
752 | [IB_QPS_RESET] = { .valid = 1 }, | |
753 | [IB_QPS_ERR] = { .valid = 1 }, | |
754 | [IB_QPS_RTS] = { | |
755 | .valid = 1, | |
756 | .opt_param = { | |
757 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
758 | IB_QP_QKEY), | |
759 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
760 | IB_QP_ACCESS_FLAGS), | |
761 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
762 | IB_QP_QKEY), | |
763 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
764 | IB_QP_QKEY), | |
765 | } | |
766 | } | |
767 | }, | |
768 | [IB_QPS_ERR] = { | |
769 | [IB_QPS_RESET] = { .valid = 1 }, | |
770 | [IB_QPS_ERR] = { .valid = 1 } | |
771 | } | |
772 | }; | |
773 | ||
774 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
775 | enum ib_qp_type type, enum ib_qp_attr_mask mask) | |
776 | { | |
777 | enum ib_qp_attr_mask req_param, opt_param; | |
778 | ||
779 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
780 | next_state < 0 || next_state > IB_QPS_ERR) | |
781 | return 0; | |
782 | ||
783 | if (mask & IB_QP_CUR_STATE && | |
784 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
785 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
786 | return 0; | |
787 | ||
788 | if (!qp_state_table[cur_state][next_state].valid) | |
789 | return 0; | |
790 | ||
791 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
792 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
793 | ||
794 | if ((mask & req_param) != req_param) | |
795 | return 0; | |
796 | ||
797 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
798 | return 0; | |
799 | ||
800 | return 1; | |
801 | } | |
802 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
803 | ||
1da177e4 LT |
804 | int ib_modify_qp(struct ib_qp *qp, |
805 | struct ib_qp_attr *qp_attr, | |
806 | int qp_attr_mask) | |
807 | { | |
0e0ec7e0 | 808 | return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
809 | } |
810 | EXPORT_SYMBOL(ib_modify_qp); | |
811 | ||
812 | int ib_query_qp(struct ib_qp *qp, | |
813 | struct ib_qp_attr *qp_attr, | |
814 | int qp_attr_mask, | |
815 | struct ib_qp_init_attr *qp_init_attr) | |
816 | { | |
817 | return qp->device->query_qp ? | |
0e0ec7e0 | 818 | qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : |
1da177e4 LT |
819 | -ENOSYS; |
820 | } | |
821 | EXPORT_SYMBOL(ib_query_qp); | |
822 | ||
0e0ec7e0 SH |
823 | int ib_close_qp(struct ib_qp *qp) |
824 | { | |
825 | struct ib_qp *real_qp; | |
826 | unsigned long flags; | |
827 | ||
828 | real_qp = qp->real_qp; | |
829 | if (real_qp == qp) | |
830 | return -EINVAL; | |
831 | ||
832 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
833 | list_del(&qp->open_list); | |
834 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
835 | ||
836 | atomic_dec(&real_qp->usecnt); | |
837 | kfree(qp); | |
838 | ||
839 | return 0; | |
840 | } | |
841 | EXPORT_SYMBOL(ib_close_qp); | |
842 | ||
843 | static int __ib_destroy_shared_qp(struct ib_qp *qp) | |
844 | { | |
845 | struct ib_xrcd *xrcd; | |
846 | struct ib_qp *real_qp; | |
847 | int ret; | |
848 | ||
849 | real_qp = qp->real_qp; | |
850 | xrcd = real_qp->xrcd; | |
851 | ||
852 | mutex_lock(&xrcd->tgt_qp_mutex); | |
853 | ib_close_qp(qp); | |
854 | if (atomic_read(&real_qp->usecnt) == 0) | |
855 | list_del(&real_qp->xrcd_list); | |
856 | else | |
857 | real_qp = NULL; | |
858 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
859 | ||
860 | if (real_qp) { | |
861 | ret = ib_destroy_qp(real_qp); | |
862 | if (!ret) | |
863 | atomic_dec(&xrcd->usecnt); | |
864 | else | |
865 | __ib_insert_xrcd_qp(xrcd, real_qp); | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
1da177e4 LT |
871 | int ib_destroy_qp(struct ib_qp *qp) |
872 | { | |
873 | struct ib_pd *pd; | |
874 | struct ib_cq *scq, *rcq; | |
875 | struct ib_srq *srq; | |
876 | int ret; | |
877 | ||
0e0ec7e0 SH |
878 | if (atomic_read(&qp->usecnt)) |
879 | return -EBUSY; | |
880 | ||
881 | if (qp->real_qp != qp) | |
882 | return __ib_destroy_shared_qp(qp); | |
883 | ||
b42b63cf SH |
884 | pd = qp->pd; |
885 | scq = qp->send_cq; | |
886 | rcq = qp->recv_cq; | |
887 | srq = qp->srq; | |
1da177e4 LT |
888 | |
889 | ret = qp->device->destroy_qp(qp); | |
890 | if (!ret) { | |
b42b63cf SH |
891 | if (pd) |
892 | atomic_dec(&pd->usecnt); | |
893 | if (scq) | |
894 | atomic_dec(&scq->usecnt); | |
895 | if (rcq) | |
896 | atomic_dec(&rcq->usecnt); | |
1da177e4 LT |
897 | if (srq) |
898 | atomic_dec(&srq->usecnt); | |
899 | } | |
900 | ||
901 | return ret; | |
902 | } | |
903 | EXPORT_SYMBOL(ib_destroy_qp); | |
904 | ||
905 | /* Completion queues */ | |
906 | ||
907 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
908 | ib_comp_handler comp_handler, | |
909 | void (*event_handler)(struct ib_event *, void *), | |
f4fd0b22 | 910 | void *cq_context, int cqe, int comp_vector) |
1da177e4 LT |
911 | { |
912 | struct ib_cq *cq; | |
913 | ||
f4fd0b22 | 914 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
1da177e4 LT |
915 | |
916 | if (!IS_ERR(cq)) { | |
917 | cq->device = device; | |
b5e81bf5 | 918 | cq->uobject = NULL; |
1da177e4 LT |
919 | cq->comp_handler = comp_handler; |
920 | cq->event_handler = event_handler; | |
921 | cq->cq_context = cq_context; | |
922 | atomic_set(&cq->usecnt, 0); | |
923 | } | |
924 | ||
925 | return cq; | |
926 | } | |
927 | EXPORT_SYMBOL(ib_create_cq); | |
928 | ||
2dd57162 EC |
929 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
930 | { | |
931 | return cq->device->modify_cq ? | |
932 | cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; | |
933 | } | |
934 | EXPORT_SYMBOL(ib_modify_cq); | |
935 | ||
1da177e4 LT |
936 | int ib_destroy_cq(struct ib_cq *cq) |
937 | { | |
938 | if (atomic_read(&cq->usecnt)) | |
939 | return -EBUSY; | |
940 | ||
941 | return cq->device->destroy_cq(cq); | |
942 | } | |
943 | EXPORT_SYMBOL(ib_destroy_cq); | |
944 | ||
a74cd4af | 945 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 946 | { |
40de2e54 | 947 | return cq->device->resize_cq ? |
33b9b3ee | 948 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
949 | } |
950 | EXPORT_SYMBOL(ib_resize_cq); | |
951 | ||
952 | /* Memory regions */ | |
953 | ||
954 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
955 | { | |
956 | struct ib_mr *mr; | |
957 | ||
958 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
959 | ||
960 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
961 | mr->device = pd->device; |
962 | mr->pd = pd; | |
963 | mr->uobject = NULL; | |
1da177e4 LT |
964 | atomic_inc(&pd->usecnt); |
965 | atomic_set(&mr->usecnt, 0); | |
966 | } | |
967 | ||
968 | return mr; | |
969 | } | |
970 | EXPORT_SYMBOL(ib_get_dma_mr); | |
971 | ||
972 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
973 | struct ib_phys_buf *phys_buf_array, | |
974 | int num_phys_buf, | |
975 | int mr_access_flags, | |
976 | u64 *iova_start) | |
977 | { | |
978 | struct ib_mr *mr; | |
979 | ||
7ce5eacb DB |
980 | if (!pd->device->reg_phys_mr) |
981 | return ERR_PTR(-ENOSYS); | |
982 | ||
1da177e4 LT |
983 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
984 | mr_access_flags, iova_start); | |
985 | ||
986 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
987 | mr->device = pd->device; |
988 | mr->pd = pd; | |
989 | mr->uobject = NULL; | |
1da177e4 LT |
990 | atomic_inc(&pd->usecnt); |
991 | atomic_set(&mr->usecnt, 0); | |
992 | } | |
993 | ||
994 | return mr; | |
995 | } | |
996 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
997 | ||
998 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
999 | int mr_rereg_mask, | |
1000 | struct ib_pd *pd, | |
1001 | struct ib_phys_buf *phys_buf_array, | |
1002 | int num_phys_buf, | |
1003 | int mr_access_flags, | |
1004 | u64 *iova_start) | |
1005 | { | |
1006 | struct ib_pd *old_pd; | |
1007 | int ret; | |
1008 | ||
1009 | if (!mr->device->rereg_phys_mr) | |
1010 | return -ENOSYS; | |
1011 | ||
1012 | if (atomic_read(&mr->usecnt)) | |
1013 | return -EBUSY; | |
1014 | ||
1015 | old_pd = mr->pd; | |
1016 | ||
1017 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
1018 | phys_buf_array, num_phys_buf, | |
1019 | mr_access_flags, iova_start); | |
1020 | ||
1021 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
1022 | atomic_dec(&old_pd->usecnt); | |
1023 | atomic_inc(&pd->usecnt); | |
1024 | } | |
1025 | ||
1026 | return ret; | |
1027 | } | |
1028 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
1029 | ||
1030 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
1031 | { | |
1032 | return mr->device->query_mr ? | |
1033 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
1034 | } | |
1035 | EXPORT_SYMBOL(ib_query_mr); | |
1036 | ||
1037 | int ib_dereg_mr(struct ib_mr *mr) | |
1038 | { | |
1039 | struct ib_pd *pd; | |
1040 | int ret; | |
1041 | ||
1042 | if (atomic_read(&mr->usecnt)) | |
1043 | return -EBUSY; | |
1044 | ||
1045 | pd = mr->pd; | |
1046 | ret = mr->device->dereg_mr(mr); | |
1047 | if (!ret) | |
1048 | atomic_dec(&pd->usecnt); | |
1049 | ||
1050 | return ret; | |
1051 | } | |
1052 | EXPORT_SYMBOL(ib_dereg_mr); | |
1053 | ||
00f7ec36 SW |
1054 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) |
1055 | { | |
1056 | struct ib_mr *mr; | |
1057 | ||
1058 | if (!pd->device->alloc_fast_reg_mr) | |
1059 | return ERR_PTR(-ENOSYS); | |
1060 | ||
1061 | mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); | |
1062 | ||
1063 | if (!IS_ERR(mr)) { | |
1064 | mr->device = pd->device; | |
1065 | mr->pd = pd; | |
1066 | mr->uobject = NULL; | |
1067 | atomic_inc(&pd->usecnt); | |
1068 | atomic_set(&mr->usecnt, 0); | |
1069 | } | |
1070 | ||
1071 | return mr; | |
1072 | } | |
1073 | EXPORT_SYMBOL(ib_alloc_fast_reg_mr); | |
1074 | ||
1075 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, | |
1076 | int max_page_list_len) | |
1077 | { | |
1078 | struct ib_fast_reg_page_list *page_list; | |
1079 | ||
1080 | if (!device->alloc_fast_reg_page_list) | |
1081 | return ERR_PTR(-ENOSYS); | |
1082 | ||
1083 | page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); | |
1084 | ||
1085 | if (!IS_ERR(page_list)) { | |
1086 | page_list->device = device; | |
1087 | page_list->max_page_list_len = max_page_list_len; | |
1088 | } | |
1089 | ||
1090 | return page_list; | |
1091 | } | |
1092 | EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); | |
1093 | ||
1094 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
1095 | { | |
1096 | page_list->device->free_fast_reg_page_list(page_list); | |
1097 | } | |
1098 | EXPORT_SYMBOL(ib_free_fast_reg_page_list); | |
1099 | ||
1da177e4 LT |
1100 | /* Memory windows */ |
1101 | ||
7083e42e | 1102 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) |
1da177e4 LT |
1103 | { |
1104 | struct ib_mw *mw; | |
1105 | ||
1106 | if (!pd->device->alloc_mw) | |
1107 | return ERR_PTR(-ENOSYS); | |
1108 | ||
7083e42e | 1109 | mw = pd->device->alloc_mw(pd, type); |
1da177e4 | 1110 | if (!IS_ERR(mw)) { |
b5e81bf5 RD |
1111 | mw->device = pd->device; |
1112 | mw->pd = pd; | |
1113 | mw->uobject = NULL; | |
7083e42e | 1114 | mw->type = type; |
1da177e4 LT |
1115 | atomic_inc(&pd->usecnt); |
1116 | } | |
1117 | ||
1118 | return mw; | |
1119 | } | |
1120 | EXPORT_SYMBOL(ib_alloc_mw); | |
1121 | ||
1122 | int ib_dealloc_mw(struct ib_mw *mw) | |
1123 | { | |
1124 | struct ib_pd *pd; | |
1125 | int ret; | |
1126 | ||
1127 | pd = mw->pd; | |
1128 | ret = mw->device->dealloc_mw(mw); | |
1129 | if (!ret) | |
1130 | atomic_dec(&pd->usecnt); | |
1131 | ||
1132 | return ret; | |
1133 | } | |
1134 | EXPORT_SYMBOL(ib_dealloc_mw); | |
1135 | ||
1136 | /* "Fast" memory regions */ | |
1137 | ||
1138 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
1139 | int mr_access_flags, | |
1140 | struct ib_fmr_attr *fmr_attr) | |
1141 | { | |
1142 | struct ib_fmr *fmr; | |
1143 | ||
1144 | if (!pd->device->alloc_fmr) | |
1145 | return ERR_PTR(-ENOSYS); | |
1146 | ||
1147 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
1148 | if (!IS_ERR(fmr)) { | |
1149 | fmr->device = pd->device; | |
1150 | fmr->pd = pd; | |
1151 | atomic_inc(&pd->usecnt); | |
1152 | } | |
1153 | ||
1154 | return fmr; | |
1155 | } | |
1156 | EXPORT_SYMBOL(ib_alloc_fmr); | |
1157 | ||
1158 | int ib_unmap_fmr(struct list_head *fmr_list) | |
1159 | { | |
1160 | struct ib_fmr *fmr; | |
1161 | ||
1162 | if (list_empty(fmr_list)) | |
1163 | return 0; | |
1164 | ||
1165 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
1166 | return fmr->device->unmap_fmr(fmr_list); | |
1167 | } | |
1168 | EXPORT_SYMBOL(ib_unmap_fmr); | |
1169 | ||
1170 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
1171 | { | |
1172 | struct ib_pd *pd; | |
1173 | int ret; | |
1174 | ||
1175 | pd = fmr->pd; | |
1176 | ret = fmr->device->dealloc_fmr(fmr); | |
1177 | if (!ret) | |
1178 | atomic_dec(&pd->usecnt); | |
1179 | ||
1180 | return ret; | |
1181 | } | |
1182 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
1183 | ||
1184 | /* Multicast groups */ | |
1185 | ||
1186 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1187 | { | |
c3bccbfb OG |
1188 | int ret; |
1189 | ||
0c33aeed JM |
1190 | if (!qp->device->attach_mcast) |
1191 | return -ENOSYS; | |
1192 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1193 | return -EINVAL; | |
1194 | ||
c3bccbfb OG |
1195 | ret = qp->device->attach_mcast(qp, gid, lid); |
1196 | if (!ret) | |
1197 | atomic_inc(&qp->usecnt); | |
1198 | return ret; | |
1da177e4 LT |
1199 | } |
1200 | EXPORT_SYMBOL(ib_attach_mcast); | |
1201 | ||
1202 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1203 | { | |
c3bccbfb OG |
1204 | int ret; |
1205 | ||
0c33aeed JM |
1206 | if (!qp->device->detach_mcast) |
1207 | return -ENOSYS; | |
1208 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1209 | return -EINVAL; | |
1210 | ||
c3bccbfb OG |
1211 | ret = qp->device->detach_mcast(qp, gid, lid); |
1212 | if (!ret) | |
1213 | atomic_dec(&qp->usecnt); | |
1214 | return ret; | |
1da177e4 LT |
1215 | } |
1216 | EXPORT_SYMBOL(ib_detach_mcast); | |
59991f94 SH |
1217 | |
1218 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) | |
1219 | { | |
1220 | struct ib_xrcd *xrcd; | |
1221 | ||
1222 | if (!device->alloc_xrcd) | |
1223 | return ERR_PTR(-ENOSYS); | |
1224 | ||
1225 | xrcd = device->alloc_xrcd(device, NULL, NULL); | |
1226 | if (!IS_ERR(xrcd)) { | |
1227 | xrcd->device = device; | |
53d0bd1e | 1228 | xrcd->inode = NULL; |
59991f94 | 1229 | atomic_set(&xrcd->usecnt, 0); |
d3d72d90 SH |
1230 | mutex_init(&xrcd->tgt_qp_mutex); |
1231 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
59991f94 SH |
1232 | } |
1233 | ||
1234 | return xrcd; | |
1235 | } | |
1236 | EXPORT_SYMBOL(ib_alloc_xrcd); | |
1237 | ||
1238 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
1239 | { | |
d3d72d90 SH |
1240 | struct ib_qp *qp; |
1241 | int ret; | |
1242 | ||
59991f94 SH |
1243 | if (atomic_read(&xrcd->usecnt)) |
1244 | return -EBUSY; | |
1245 | ||
d3d72d90 SH |
1246 | while (!list_empty(&xrcd->tgt_qp_list)) { |
1247 | qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); | |
1248 | ret = ib_destroy_qp(qp); | |
1249 | if (ret) | |
1250 | return ret; | |
1251 | } | |
1252 | ||
59991f94 SH |
1253 | return xrcd->device->dealloc_xrcd(xrcd); |
1254 | } | |
1255 | EXPORT_SYMBOL(ib_dealloc_xrcd); |