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Linux 2.6.20.9
[linux/fpc-iii.git] / drivers / infiniband / hw / ehca / ehca_qp.c
blob34b85556d01e0d55b8524f62ac1f65aef2be63e5
1 /*
2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
3 *
4 * QP functions
5 *
6 * Authors: Waleri Fomin <fomin@de.ibm.com>
7 * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
8 * Reinhard Ernst <rernst@de.ibm.com>
9 * Heiko J Schick <schickhj@de.ibm.com>
10 *
11 * Copyright (c) 2005 IBM Corporation
12 *
13 * All rights reserved.
14 *
15 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
16 * BSD.
17 *
18 * OpenIB BSD License
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions are met:
22 *
23 * Redistributions of source code must retain the above copyright notice, this
24 * list of conditions and the following disclaimer.
25 *
26 * Redistributions in binary form must reproduce the above copyright notice,
27 * this list of conditions and the following disclaimer in the documentation
28 * and/or other materials
29 * provided with the distribution.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
32 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
35 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
36 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
37 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
38 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
39 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGE.
42 */
43
44
45 #include <asm/current.h>
46
47 #include "ehca_classes.h"
48 #include "ehca_tools.h"
49 #include "ehca_qes.h"
50 #include "ehca_iverbs.h"
51 #include "hcp_if.h"
52 #include "hipz_fns.h"
53
54 static struct kmem_cache *qp_cache;
55
56 /*
57 * attributes not supported by query qp
58 */
59 #define QP_ATTR_QUERY_NOT_SUPPORTED (IB_QP_MAX_DEST_RD_ATOMIC | \
60 IB_QP_MAX_QP_RD_ATOMIC | \
61 IB_QP_ACCESS_FLAGS | \
62 IB_QP_EN_SQD_ASYNC_NOTIFY)
63
64 /*
65 * ehca (internal) qp state values
66 */
67 enum ehca_qp_state {
68 EHCA_QPS_RESET = 1,
69 EHCA_QPS_INIT = 2,
70 EHCA_QPS_RTR = 3,
71 EHCA_QPS_RTS = 5,
72 EHCA_QPS_SQD = 6,
73 EHCA_QPS_SQE = 8,
74 EHCA_QPS_ERR = 128
75 };
76
77 /*
78 * qp state transitions as defined by IB Arch Rel 1.1 page 431
79 */
80 enum ib_qp_statetrans {
81 IB_QPST_ANY2RESET,
82 IB_QPST_ANY2ERR,
83 IB_QPST_RESET2INIT,
84 IB_QPST_INIT2RTR,
85 IB_QPST_INIT2INIT,
86 IB_QPST_RTR2RTS,
87 IB_QPST_RTS2SQD,
88 IB_QPST_RTS2RTS,
89 IB_QPST_SQD2RTS,
90 IB_QPST_SQE2RTS,
91 IB_QPST_SQD2SQD,
92 IB_QPST_MAX /* nr of transitions, this must be last!!! */
93 };
94
95 /*
96 * ib2ehca_qp_state maps IB to ehca qp_state
97 * returns ehca qp state corresponding to given ib qp state
98 */
99 static inline enum ehca_qp_state ib2ehca_qp_state(enum ib_qp_state ib_qp_state)
100 {
101 switch (ib_qp_state) {
102 case IB_QPS_RESET:
103 return EHCA_QPS_RESET;
104 case IB_QPS_INIT:
105 return EHCA_QPS_INIT;
106 case IB_QPS_RTR:
107 return EHCA_QPS_RTR;
108 case IB_QPS_RTS:
109 return EHCA_QPS_RTS;
110 case IB_QPS_SQD:
111 return EHCA_QPS_SQD;
112 case IB_QPS_SQE:
113 return EHCA_QPS_SQE;
114 case IB_QPS_ERR:
115 return EHCA_QPS_ERR;
116 default:
117 ehca_gen_err("invalid ib_qp_state=%x", ib_qp_state);
118 return -EINVAL;
119 }
120 }
121
122 /*
123 * ehca2ib_qp_state maps ehca to IB qp_state
124 * returns ib qp state corresponding to given ehca qp state
125 */
126 static inline enum ib_qp_state ehca2ib_qp_state(enum ehca_qp_state
127 ehca_qp_state)
128 {
129 switch (ehca_qp_state) {
130 case EHCA_QPS_RESET:
131 return IB_QPS_RESET;
132 case EHCA_QPS_INIT:
133 return IB_QPS_INIT;
134 case EHCA_QPS_RTR:
135 return IB_QPS_RTR;
136 case EHCA_QPS_RTS:
137 return IB_QPS_RTS;
138 case EHCA_QPS_SQD:
139 return IB_QPS_SQD;
140 case EHCA_QPS_SQE:
141 return IB_QPS_SQE;
142 case EHCA_QPS_ERR:
143 return IB_QPS_ERR;
144 default:
145 ehca_gen_err("invalid ehca_qp_state=%x", ehca_qp_state);
146 return -EINVAL;
147 }
148 }
149
150 /*
151 * ehca_qp_type used as index for req_attr and opt_attr of
152 * struct ehca_modqp_statetrans
153 */
154 enum ehca_qp_type {
155 QPT_RC = 0,
156 QPT_UC = 1,
157 QPT_UD = 2,
158 QPT_SQP = 3,
159 QPT_MAX
160 };
161
162 /*
163 * ib2ehcaqptype maps Ib to ehca qp_type
164 * returns ehca qp type corresponding to ib qp type
165 */
166 static inline enum ehca_qp_type ib2ehcaqptype(enum ib_qp_type ibqptype)
167 {
168 switch (ibqptype) {
169 case IB_QPT_SMI:
170 case IB_QPT_GSI:
171 return QPT_SQP;
172 case IB_QPT_RC:
173 return QPT_RC;
174 case IB_QPT_UC:
175 return QPT_UC;
176 case IB_QPT_UD:
177 return QPT_UD;
178 default:
179 ehca_gen_err("Invalid ibqptype=%x", ibqptype);
180 return -EINVAL;
181 }
182 }
183
184 static inline enum ib_qp_statetrans get_modqp_statetrans(int ib_fromstate,
185 int ib_tostate)
186 {
187 int index = -EINVAL;
188 switch (ib_tostate) {
189 case IB_QPS_RESET:
190 index = IB_QPST_ANY2RESET;
191 break;
192 case IB_QPS_INIT:
193 switch (ib_fromstate) {
194 case IB_QPS_RESET:
195 index = IB_QPST_RESET2INIT;
196 break;
197 case IB_QPS_INIT:
198 index = IB_QPST_INIT2INIT;
199 break;
200 }
201 break;
202 case IB_QPS_RTR:
203 if (ib_fromstate == IB_QPS_INIT)
204 index = IB_QPST_INIT2RTR;
205 break;
206 case IB_QPS_RTS:
207 switch (ib_fromstate) {
208 case IB_QPS_RTR:
209 index = IB_QPST_RTR2RTS;
210 break;
211 case IB_QPS_RTS:
212 index = IB_QPST_RTS2RTS;
213 break;
214 case IB_QPS_SQD:
215 index = IB_QPST_SQD2RTS;
216 break;
217 case IB_QPS_SQE:
218 index = IB_QPST_SQE2RTS;
219 break;
220 }
221 break;
222 case IB_QPS_SQD:
223 if (ib_fromstate == IB_QPS_RTS)
224 index = IB_QPST_RTS2SQD;
225 break;
226 case IB_QPS_SQE:
227 break;
228 case IB_QPS_ERR:
229 index = IB_QPST_ANY2ERR;
230 break;
231 default:
232 break;
233 }
234 return index;
235 }
236
237 enum ehca_service_type {
238 ST_RC = 0,
239 ST_UC = 1,
240 ST_RD = 2,
241 ST_UD = 3
242 };
243
244 /*
245 * ibqptype2servicetype returns hcp service type corresponding to given
246 * ib qp type used by create_qp()
247 */
248 static inline int ibqptype2servicetype(enum ib_qp_type ibqptype)
249 {
250 switch (ibqptype) {
251 case IB_QPT_SMI:
252 case IB_QPT_GSI:
253 return ST_UD;
254 case IB_QPT_RC:
255 return ST_RC;
256 case IB_QPT_UC:
257 return ST_UC;
258 case IB_QPT_UD:
259 return ST_UD;
260 case IB_QPT_RAW_IPV6:
261 return -EINVAL;
262 case IB_QPT_RAW_ETY:
263 return -EINVAL;
264 default:
265 ehca_gen_err("Invalid ibqptype=%x", ibqptype);
266 return -EINVAL;
267 }
268 }
269
270 /*
271 * init_qp_queues initializes/constructs r/squeue and registers queue pages.
272 */
273 static inline int init_qp_queues(struct ehca_shca *shca,
274 struct ehca_qp *my_qp,
275 int nr_sq_pages,
276 int nr_rq_pages,
277 int swqe_size,
278 int rwqe_size,
279 int nr_send_sges, int nr_receive_sges)
280 {
281 int ret, cnt, ipz_rc;
282 void *vpage;
283 u64 rpage, h_ret;
284 struct ib_device *ib_dev = &shca->ib_device;
285 struct ipz_adapter_handle ipz_hca_handle = shca->ipz_hca_handle;
286
287 ipz_rc = ipz_queue_ctor(&my_qp->ipz_squeue,
288 nr_sq_pages,
289 EHCA_PAGESIZE, swqe_size, nr_send_sges);
290 if (!ipz_rc) {
291 ehca_err(ib_dev,"Cannot allocate page for squeue. ipz_rc=%x",
292 ipz_rc);
293 return -EBUSY;
294 }
295
296 ipz_rc = ipz_queue_ctor(&my_qp->ipz_rqueue,
297 nr_rq_pages,
298 EHCA_PAGESIZE, rwqe_size, nr_receive_sges);
299 if (!ipz_rc) {
300 ehca_err(ib_dev, "Cannot allocate page for rqueue. ipz_rc=%x",
301 ipz_rc);
302 ret = -EBUSY;
303 goto init_qp_queues0;
304 }
305 /* register SQ pages */
306 for (cnt = 0; cnt < nr_sq_pages; cnt++) {
307 vpage = ipz_qpageit_get_inc(&my_qp->ipz_squeue);
308 if (!vpage) {
309 ehca_err(ib_dev, "SQ ipz_qpageit_get_inc() "
310 "failed p_vpage= %p", vpage);
311 ret = -EINVAL;
312 goto init_qp_queues1;
313 }
314 rpage = virt_to_abs(vpage);
315
316 h_ret = hipz_h_register_rpage_qp(ipz_hca_handle,
317 my_qp->ipz_qp_handle,
318 &my_qp->pf, 0, 0,
319 rpage, 1,
320 my_qp->galpas.kernel);
321 if (h_ret < H_SUCCESS) {
322 ehca_err(ib_dev, "SQ hipz_qp_register_rpage()"
323 " failed rc=%lx", h_ret);
324 ret = ehca2ib_return_code(h_ret);
325 goto init_qp_queues1;
326 }
327 }
328
329 ipz_qeit_reset(&my_qp->ipz_squeue);
330
331 /* register RQ pages */
332 for (cnt = 0; cnt < nr_rq_pages; cnt++) {
333 vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue);
334 if (!vpage) {
335 ehca_err(ib_dev, "RQ ipz_qpageit_get_inc() "
336 "failed p_vpage = %p", vpage);
337 ret = -EINVAL;
338 goto init_qp_queues1;
339 }
340
341 rpage = virt_to_abs(vpage);
342
343 h_ret = hipz_h_register_rpage_qp(ipz_hca_handle,
344 my_qp->ipz_qp_handle,
345 &my_qp->pf, 0, 1,
346 rpage, 1,my_qp->galpas.kernel);
347 if (h_ret < H_SUCCESS) {
348 ehca_err(ib_dev, "RQ hipz_qp_register_rpage() failed "
349 "rc=%lx", h_ret);
350 ret = ehca2ib_return_code(h_ret);
351 goto init_qp_queues1;
352 }
353 if (cnt == (nr_rq_pages - 1)) { /* last page! */
354 if (h_ret != H_SUCCESS) {
355 ehca_err(ib_dev, "RQ hipz_qp_register_rpage() "
356 "h_ret= %lx ", h_ret);
357 ret = ehca2ib_return_code(h_ret);
358 goto init_qp_queues1;
359 }
360 vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue);
361 if (vpage) {
362 ehca_err(ib_dev, "ipz_qpageit_get_inc() "
363 "should not succeed vpage=%p", vpage);
364 ret = -EINVAL;
365 goto init_qp_queues1;
366 }
367 } else {
368 if (h_ret != H_PAGE_REGISTERED) {
369 ehca_err(ib_dev, "RQ hipz_qp_register_rpage() "
370 "h_ret= %lx ", h_ret);
371 ret = ehca2ib_return_code(h_ret);
372 goto init_qp_queues1;
373 }
374 }
375 }
376
377 ipz_qeit_reset(&my_qp->ipz_rqueue);
378
379 return 0;
380
381 init_qp_queues1:
382 ipz_queue_dtor(&my_qp->ipz_rqueue);
383 init_qp_queues0:
384 ipz_queue_dtor(&my_qp->ipz_squeue);
385 return ret;
386 }
387
388 struct ib_qp *ehca_create_qp(struct ib_pd *pd,
389 struct ib_qp_init_attr *init_attr,
390 struct ib_udata *udata)
391 {
392 static int da_rc_msg_size[]={ 128, 256, 512, 1024, 2048, 4096 };
393 static int da_ud_sq_msg_size[]={ 128, 384, 896, 1920, 3968 };
394 struct ehca_qp *my_qp;
395 struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd);
396 struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
397 ib_device);
398 struct ib_ucontext *context = NULL;
399 u64 h_ret;
400 int max_send_sge, max_recv_sge, ret;
401
402 /* h_call's out parameters */
403 struct ehca_alloc_qp_parms parms;
404 u32 swqe_size = 0, rwqe_size = 0;
405 u8 daqp_completion, isdaqp;
406 unsigned long flags;
407
408 if (init_attr->sq_sig_type != IB_SIGNAL_REQ_WR &&
409 init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) {
410 ehca_err(pd->device, "init_attr->sg_sig_type=%x not allowed",
411 init_attr->sq_sig_type);
412 return ERR_PTR(-EINVAL);
413 }
414
415 /* save daqp completion bits */
416 daqp_completion = init_attr->qp_type & 0x60;
417 /* save daqp bit */
418 isdaqp = (init_attr->qp_type & 0x80) ? 1 : 0;
419 init_attr->qp_type = init_attr->qp_type & 0x1F;
420
421 if (init_attr->qp_type != IB_QPT_UD &&
422 init_attr->qp_type != IB_QPT_SMI &&
423 init_attr->qp_type != IB_QPT_GSI &&
424 init_attr->qp_type != IB_QPT_UC &&
425 init_attr->qp_type != IB_QPT_RC) {
426 ehca_err(pd->device, "wrong QP Type=%x", init_attr->qp_type);
427 return ERR_PTR(-EINVAL);
428 }
429 if ((init_attr->qp_type != IB_QPT_RC && init_attr->qp_type != IB_QPT_UD)
430 && isdaqp) {
431 ehca_err(pd->device, "unsupported LL QP Type=%x",
432 init_attr->qp_type);
433 return ERR_PTR(-EINVAL);
434 } else if (init_attr->qp_type == IB_QPT_RC && isdaqp &&
435 (init_attr->cap.max_send_wr > 255 ||
436 init_attr->cap.max_recv_wr > 255 )) {
437 ehca_err(pd->device, "Invalid Number of max_sq_wr =%x "
438 "or max_rq_wr=%x for QP Type=%x",
439 init_attr->cap.max_send_wr,
440 init_attr->cap.max_recv_wr,init_attr->qp_type);
441 return ERR_PTR(-EINVAL);
442 } else if (init_attr->qp_type == IB_QPT_UD && isdaqp &&
443 init_attr->cap.max_send_wr > 255) {
444 ehca_err(pd->device,
445 "Invalid Number of max_send_wr=%x for UD QP_TYPE=%x",
446 init_attr->cap.max_send_wr, init_attr->qp_type);
447 return ERR_PTR(-EINVAL);
448 }
449
450 if (pd->uobject && udata)
451 context = pd->uobject->context;
452
453 my_qp = kmem_cache_alloc(qp_cache, GFP_KERNEL);
454 if (!my_qp) {
455 ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd);
456 return ERR_PTR(-ENOMEM);
457 }
458
459 memset(my_qp, 0, sizeof(struct ehca_qp));
460 memset (&parms, 0, sizeof(struct ehca_alloc_qp_parms));
461 spin_lock_init(&my_qp->spinlock_s);
462 spin_lock_init(&my_qp->spinlock_r);
463
464 my_qp->recv_cq =
465 container_of(init_attr->recv_cq, struct ehca_cq, ib_cq);
466 my_qp->send_cq =
467 container_of(init_attr->send_cq, struct ehca_cq, ib_cq);
468
469 my_qp->init_attr = *init_attr;
470
471 do {
472 if (!idr_pre_get(&ehca_qp_idr, GFP_KERNEL)) {
473 ret = -ENOMEM;
474 ehca_err(pd->device, "Can't reserve idr resources.");
475 goto create_qp_exit0;
476 }
477
478 spin_lock_irqsave(&ehca_qp_idr_lock, flags);
479 ret = idr_get_new(&ehca_qp_idr, my_qp, &my_qp->token);
480 spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
481
482 } while (ret == -EAGAIN);
483
484 if (ret) {
485 ret = -ENOMEM;
486 ehca_err(pd->device, "Can't allocate new idr entry.");
487 goto create_qp_exit0;
488 }
489
490 parms.servicetype = ibqptype2servicetype(init_attr->qp_type);
491 if (parms.servicetype < 0) {
492 ret = -EINVAL;
493 ehca_err(pd->device, "Invalid qp_type=%x", init_attr->qp_type);
494 goto create_qp_exit0;
495 }
496
497 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
498 parms.sigtype = HCALL_SIGT_EVERY;
499 else
500 parms.sigtype = HCALL_SIGT_BY_WQE;
501
502 /* UD_AV CIRCUMVENTION */
503 max_send_sge = init_attr->cap.max_send_sge;
504 max_recv_sge = init_attr->cap.max_recv_sge;
505 if (IB_QPT_UD == init_attr->qp_type ||
506 IB_QPT_GSI == init_attr->qp_type ||
507 IB_QPT_SMI == init_attr->qp_type) {
508 max_send_sge += 2;
509 max_recv_sge += 2;
510 }
511
512 parms.ipz_eq_handle = shca->eq.ipz_eq_handle;
513 parms.daqp_ctrl = isdaqp | daqp_completion;
514 parms.pd = my_pd->fw_pd;
515 parms.max_recv_sge = max_recv_sge;
516 parms.max_send_sge = max_send_sge;
517
518 h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, my_qp, &parms);
519
520 if (h_ret != H_SUCCESS) {
521 ehca_err(pd->device, "h_alloc_resource_qp() failed h_ret=%lx",
522 h_ret);
523 ret = ehca2ib_return_code(h_ret);
524 goto create_qp_exit1;
525 }
526
527 switch (init_attr->qp_type) {
528 case IB_QPT_RC:
529 if (isdaqp == 0) {
530 swqe_size = offsetof(struct ehca_wqe, u.nud.sg_list[
531 (parms.act_nr_send_sges)]);
532 rwqe_size = offsetof(struct ehca_wqe, u.nud.sg_list[
533 (parms.act_nr_recv_sges)]);
534 } else { /* for daqp we need to use msg size, not wqe size */
535 swqe_size = da_rc_msg_size[max_send_sge];
536 rwqe_size = da_rc_msg_size[max_recv_sge];
537 parms.act_nr_send_sges = 1;
538 parms.act_nr_recv_sges = 1;
539 }
540 break;
541 case IB_QPT_UC:
542 swqe_size = offsetof(struct ehca_wqe,
543 u.nud.sg_list[parms.act_nr_send_sges]);
544 rwqe_size = offsetof(struct ehca_wqe,
545 u.nud.sg_list[parms.act_nr_recv_sges]);
546 break;
547
548 case IB_QPT_UD:
549 case IB_QPT_GSI:
550 case IB_QPT_SMI:
551 /* UD circumvention */
552 parms.act_nr_recv_sges -= 2;
553 parms.act_nr_send_sges -= 2;
554 if (isdaqp) {
555 swqe_size = da_ud_sq_msg_size[max_send_sge];
556 rwqe_size = da_rc_msg_size[max_recv_sge];
557 parms.act_nr_send_sges = 1;
558 parms.act_nr_recv_sges = 1;
559 } else {
560 swqe_size = offsetof(struct ehca_wqe,
561 u.ud_av.sg_list[parms.act_nr_send_sges]);
562 rwqe_size = offsetof(struct ehca_wqe,
563 u.ud_av.sg_list[parms.act_nr_recv_sges]);
564 }
565
566 if (IB_QPT_GSI == init_attr->qp_type ||
567 IB_QPT_SMI == init_attr->qp_type) {
568 parms.act_nr_send_wqes = init_attr->cap.max_send_wr;
569 parms.act_nr_recv_wqes = init_attr->cap.max_recv_wr;
570 parms.act_nr_send_sges = init_attr->cap.max_send_sge;
571 parms.act_nr_recv_sges = init_attr->cap.max_recv_sge;
572 my_qp->real_qp_num =
573 (init_attr->qp_type == IB_QPT_SMI) ? 0 : 1;
574 }
575
576 break;
577
578 default:
579 break;
580 }
581
582 /* initializes r/squeue and registers queue pages */
583 ret = init_qp_queues(shca, my_qp,
584 parms.nr_sq_pages, parms.nr_rq_pages,
585 swqe_size, rwqe_size,
586 parms.act_nr_send_sges, parms.act_nr_recv_sges);
587 if (ret) {
588 ehca_err(pd->device,
589 "Couldn't initialize r/squeue and pages ret=%x", ret);
590 goto create_qp_exit2;
591 }
592
593 my_qp->ib_qp.pd = &my_pd->ib_pd;
594 my_qp->ib_qp.device = my_pd->ib_pd.device;
595
596 my_qp->ib_qp.recv_cq = init_attr->recv_cq;
597 my_qp->ib_qp.send_cq = init_attr->send_cq;
598
599 my_qp->ib_qp.qp_num = my_qp->real_qp_num;
600 my_qp->ib_qp.qp_type = init_attr->qp_type;
601
602 my_qp->qp_type = init_attr->qp_type;
603 my_qp->ib_qp.srq = init_attr->srq;
604
605 my_qp->ib_qp.qp_context = init_attr->qp_context;
606 my_qp->ib_qp.event_handler = init_attr->event_handler;
607
608 init_attr->cap.max_inline_data = 0; /* not supported yet */
609 init_attr->cap.max_recv_sge = parms.act_nr_recv_sges;
610 init_attr->cap.max_recv_wr = parms.act_nr_recv_wqes;
611 init_attr->cap.max_send_sge = parms.act_nr_send_sges;
612 init_attr->cap.max_send_wr = parms.act_nr_send_wqes;
613
614 /* NOTE: define_apq0() not supported yet */
615 if (init_attr->qp_type == IB_QPT_GSI) {
616 h_ret = ehca_define_sqp(shca, my_qp, init_attr);
617 if (h_ret != H_SUCCESS) {
618 ehca_err(pd->device, "ehca_define_sqp() failed rc=%lx",
619 h_ret);
620 ret = ehca2ib_return_code(h_ret);
621 goto create_qp_exit3;
622 }
623 }
624 if (init_attr->send_cq) {
625 struct ehca_cq *cq = container_of(init_attr->send_cq,
626 struct ehca_cq, ib_cq);
627 ret = ehca_cq_assign_qp(cq, my_qp);
628 if (ret) {
629 ehca_err(pd->device, "Couldn't assign qp to send_cq ret=%x",
630 ret);
631 goto create_qp_exit3;
632 }
633 my_qp->send_cq = cq;
634 }
635 /* copy queues, galpa data to user space */
636 if (context && udata) {
637 struct ipz_queue *ipz_rqueue = &my_qp->ipz_rqueue;
638 struct ipz_queue *ipz_squeue = &my_qp->ipz_squeue;
639 struct ehca_create_qp_resp resp;
640 struct vm_area_struct * vma;
641 memset(&resp, 0, sizeof(resp));
642
643 resp.qp_num = my_qp->real_qp_num;
644 resp.token = my_qp->token;
645 resp.qp_type = my_qp->qp_type;
646 resp.qkey = my_qp->qkey;
647 resp.real_qp_num = my_qp->real_qp_num;
648 /* rqueue properties */
649 resp.ipz_rqueue.qe_size = ipz_rqueue->qe_size;
650 resp.ipz_rqueue.act_nr_of_sg = ipz_rqueue->act_nr_of_sg;
651 resp.ipz_rqueue.queue_length = ipz_rqueue->queue_length;
652 resp.ipz_rqueue.pagesize = ipz_rqueue->pagesize;
653 resp.ipz_rqueue.toggle_state = ipz_rqueue->toggle_state;
654 ret = ehca_mmap_nopage(((u64)(my_qp->token) << 32) | 0x22000000,
655 ipz_rqueue->queue_length,
656 (void**)&resp.ipz_rqueue.queue,
657 &vma);
658 if (ret) {
659 ehca_err(pd->device, "Could not mmap rqueue pages");
660 goto create_qp_exit3;
661 }
662 my_qp->uspace_rqueue = resp.ipz_rqueue.queue;
663 /* squeue properties */
664 resp.ipz_squeue.qe_size = ipz_squeue->qe_size;
665 resp.ipz_squeue.act_nr_of_sg = ipz_squeue->act_nr_of_sg;
666 resp.ipz_squeue.queue_length = ipz_squeue->queue_length;
667 resp.ipz_squeue.pagesize = ipz_squeue->pagesize;
668 resp.ipz_squeue.toggle_state = ipz_squeue->toggle_state;
669 ret = ehca_mmap_nopage(((u64)(my_qp->token) << 32) | 0x23000000,
670 ipz_squeue->queue_length,
671 (void**)&resp.ipz_squeue.queue,
672 &vma);
673 if (ret) {
674 ehca_err(pd->device, "Could not mmap squeue pages");
675 goto create_qp_exit4;
676 }
677 my_qp->uspace_squeue = resp.ipz_squeue.queue;
678 /* fw_handle */
679 resp.galpas = my_qp->galpas;
680 ret = ehca_mmap_register(my_qp->galpas.user.fw_handle,
681 (void**)&resp.galpas.kernel.fw_handle,
682 &vma);
683 if (ret) {
684 ehca_err(pd->device, "Could not mmap fw_handle");
685 goto create_qp_exit5;
686 }
687 my_qp->uspace_fwh = (u64)resp.galpas.kernel.fw_handle;
688
689 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
690 ehca_err(pd->device, "Copy to udata failed");
691 ret = -EINVAL;
692 goto create_qp_exit6;
693 }
694 }
695
696 return &my_qp->ib_qp;
697
698 create_qp_exit6:
699 ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE);
700
701 create_qp_exit5:
702 ehca_munmap(my_qp->uspace_squeue, my_qp->ipz_squeue.queue_length);
703
704 create_qp_exit4:
705 ehca_munmap(my_qp->uspace_rqueue, my_qp->ipz_rqueue.queue_length);
706
707 create_qp_exit3:
708 ipz_queue_dtor(&my_qp->ipz_rqueue);
709 ipz_queue_dtor(&my_qp->ipz_squeue);
710
711 create_qp_exit2:
712 hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
713
714 create_qp_exit1:
715 spin_lock_irqsave(&ehca_qp_idr_lock, flags);
716 idr_remove(&ehca_qp_idr, my_qp->token);
717 spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
718
719 create_qp_exit0:
720 kmem_cache_free(qp_cache, my_qp);
721 return ERR_PTR(ret);
722 }
723
724 /*
725 * prepare_sqe_rts called by internal_modify_qp() at trans sqe -> rts
726 * set purge bit of bad wqe and subsequent wqes to avoid reentering sqe
727 * returns total number of bad wqes in bad_wqe_cnt
728 */
729 static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca,
730 int *bad_wqe_cnt)
731 {
732 u64 h_ret;
733 struct ipz_queue *squeue;
734 void *bad_send_wqe_p, *bad_send_wqe_v;
735 u64 q_ofs;
736 struct ehca_wqe *wqe;
737 int qp_num = my_qp->ib_qp.qp_num;
738
739 /* get send wqe pointer */
740 h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle,
741 my_qp->ipz_qp_handle, &my_qp->pf,
742 &bad_send_wqe_p, NULL, 2);
743 if (h_ret != H_SUCCESS) {
744 ehca_err(&shca->ib_device, "hipz_h_disable_and_get_wqe() failed"
745 " ehca_qp=%p qp_num=%x h_ret=%lx",
746 my_qp, qp_num, h_ret);
747 return ehca2ib_return_code(h_ret);
748 }
749 bad_send_wqe_p = (void*)((u64)bad_send_wqe_p & (~(1L<<63)));
750 ehca_dbg(&shca->ib_device, "qp_num=%x bad_send_wqe_p=%p",
751 qp_num, bad_send_wqe_p);
752 /* convert wqe pointer to vadr */
753 bad_send_wqe_v = abs_to_virt((u64)bad_send_wqe_p);
754 if (ehca_debug_level)
755 ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num);
756 squeue = &my_qp->ipz_squeue;
757 if (ipz_queue_abs_to_offset(squeue, (u64)bad_send_wqe_p, &q_ofs)) {
758 ehca_err(&shca->ib_device, "failed to get wqe offset qp_num=%x"
759 " bad_send_wqe_p=%p", qp_num, bad_send_wqe_p);
760 return -EFAULT;
761 }
762
763 /* loop sets wqe's purge bit */
764 wqe = (struct ehca_wqe*)ipz_qeit_calc(squeue, q_ofs);
765 *bad_wqe_cnt = 0;
766 while (wqe->optype != 0xff && wqe->wqef != 0xff) {
767 if (ehca_debug_level)
768 ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num);
769 wqe->nr_of_data_seg = 0; /* suppress data access */
770 wqe->wqef = WQEF_PURGE; /* WQE to be purged */
771 q_ofs = ipz_queue_advance_offset(squeue, q_ofs);
772 wqe = (struct ehca_wqe*)ipz_qeit_calc(squeue, q_ofs);
773 *bad_wqe_cnt = (*bad_wqe_cnt)+1;
774 }
775 /*
776 * bad wqe will be reprocessed and ignored when pol_cq() is called,
777 * i.e. nr of wqes with flush error status is one less
778 */
779 ehca_dbg(&shca->ib_device, "qp_num=%x flusherr_wqe_cnt=%x",
780 qp_num, (*bad_wqe_cnt)-1);
781 wqe->wqef = 0;
782
783 return 0;
784 }
785
786 /*
787 * internal_modify_qp with circumvention to handle aqp0 properly
788 * smi_reset2init indicates if this is an internal reset-to-init-call for
789 * smi. This flag must always be zero if called from ehca_modify_qp()!
790 * This internal func was intorduced to avoid recursion of ehca_modify_qp()!
791 */
792 static int internal_modify_qp(struct ib_qp *ibqp,
793 struct ib_qp_attr *attr,
794 int attr_mask, int smi_reset2init)
795 {
796 enum ib_qp_state qp_cur_state, qp_new_state;
797 int cnt, qp_attr_idx, ret = 0;
798 enum ib_qp_statetrans statetrans;
799 struct hcp_modify_qp_control_block *mqpcb;
800 struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
801 struct ehca_shca *shca =
802 container_of(ibqp->pd->device, struct ehca_shca, ib_device);
803 u64 update_mask;
804 u64 h_ret;
805 int bad_wqe_cnt = 0;
806 int squeue_locked = 0;
807 unsigned long spl_flags = 0;
808
809 /* do query_qp to obtain current attr values */
810 mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
811 if (!mqpcb) {
812 ehca_err(ibqp->device, "Could not get zeroed page for mqpcb "
813 "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num);
814 return -ENOMEM;
815 }
816
817 h_ret = hipz_h_query_qp(shca->ipz_hca_handle,
818 my_qp->ipz_qp_handle,
819 &my_qp->pf,
820 mqpcb, my_qp->galpas.kernel);
821 if (h_ret != H_SUCCESS) {
822 ehca_err(ibqp->device, "hipz_h_query_qp() failed "
823 "ehca_qp=%p qp_num=%x h_ret=%lx",
824 my_qp, ibqp->qp_num, h_ret);
825 ret = ehca2ib_return_code(h_ret);
826 goto modify_qp_exit1;
827 }
828
829 qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state);
830
831 if (qp_cur_state == -EINVAL) { /* invalid qp state */
832 ret = -EINVAL;
833 ehca_err(ibqp->device, "Invalid current ehca_qp_state=%x "
834 "ehca_qp=%p qp_num=%x",
835 mqpcb->qp_state, my_qp, ibqp->qp_num);
836 goto modify_qp_exit1;
837 }
838 /*
839 * circumvention to set aqp0 initial state to init
840 * as expected by IB spec
841 */
842 if (smi_reset2init == 0 &&
843 ibqp->qp_type == IB_QPT_SMI &&
844 qp_cur_state == IB_QPS_RESET &&
845 (attr_mask & IB_QP_STATE) &&
846 attr->qp_state == IB_QPS_INIT) { /* RESET -> INIT */
847 struct ib_qp_attr smiqp_attr = {
848 .qp_state = IB_QPS_INIT,
849 .port_num = my_qp->init_attr.port_num,
850 .pkey_index = 0,
851 .qkey = 0
852 };
853 int smiqp_attr_mask = IB_QP_STATE | IB_QP_PORT |
854 IB_QP_PKEY_INDEX | IB_QP_QKEY;
855 int smirc = internal_modify_qp(
856 ibqp, &smiqp_attr, smiqp_attr_mask, 1);
857 if (smirc) {
858 ehca_err(ibqp->device, "SMI RESET -> INIT failed. "
859 "ehca_modify_qp() rc=%x", smirc);
860 ret = H_PARAMETER;
861 goto modify_qp_exit1;
862 }
863 qp_cur_state = IB_QPS_INIT;
864 ehca_dbg(ibqp->device, "SMI RESET -> INIT succeeded");
865 }
866 /* is transmitted current state equal to "real" current state */
867 if ((attr_mask & IB_QP_CUR_STATE) &&
868 qp_cur_state != attr->cur_qp_state) {
869 ret = -EINVAL;
870 ehca_err(ibqp->device,
871 "Invalid IB_QP_CUR_STATE attr->curr_qp_state=%x <>"
872 " actual cur_qp_state=%x. ehca_qp=%p qp_num=%x",
873 attr->cur_qp_state, qp_cur_state, my_qp, ibqp->qp_num);
874 goto modify_qp_exit1;
875 }
876
877 ehca_dbg(ibqp->device,"ehca_qp=%p qp_num=%x current qp_state=%x "
878 "new qp_state=%x attribute_mask=%x",
879 my_qp, ibqp->qp_num, qp_cur_state, attr->qp_state, attr_mask);
880
881 qp_new_state = attr_mask & IB_QP_STATE ? attr->qp_state : qp_cur_state;
882 if (!smi_reset2init &&
883 !ib_modify_qp_is_ok(qp_cur_state, qp_new_state, ibqp->qp_type,
884 attr_mask)) {
885 ret = -EINVAL;
886 ehca_err(ibqp->device,
887 "Invalid qp transition new_state=%x cur_state=%x "
888 "ehca_qp=%p qp_num=%x attr_mask=%x", qp_new_state,
889 qp_cur_state, my_qp, ibqp->qp_num, attr_mask);
890 goto modify_qp_exit1;
891 }
892
893 if ((mqpcb->qp_state = ib2ehca_qp_state(qp_new_state)))
894 update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
895 else {
896 ret = -EINVAL;
897 ehca_err(ibqp->device, "Invalid new qp state=%x "
898 "ehca_qp=%p qp_num=%x",
899 qp_new_state, my_qp, ibqp->qp_num);
900 goto modify_qp_exit1;
901 }
902
903 /* retrieve state transition struct to get req and opt attrs */
904 statetrans = get_modqp_statetrans(qp_cur_state, qp_new_state);
905 if (statetrans < 0) {
906 ret = -EINVAL;
907 ehca_err(ibqp->device, "<INVALID STATE CHANGE> qp_cur_state=%x "
908 "new_qp_state=%x State_xsition=%x ehca_qp=%p "
909 "qp_num=%x", qp_cur_state, qp_new_state,
910 statetrans, my_qp, ibqp->qp_num);
911 goto modify_qp_exit1;
912 }
913
914 qp_attr_idx = ib2ehcaqptype(ibqp->qp_type);
915
916 if (qp_attr_idx < 0) {
917 ret = qp_attr_idx;
918 ehca_err(ibqp->device,
919 "Invalid QP type=%x ehca_qp=%p qp_num=%x",
920 ibqp->qp_type, my_qp, ibqp->qp_num);
921 goto modify_qp_exit1;
922 }
923
924 ehca_dbg(ibqp->device,
925 "ehca_qp=%p qp_num=%x <VALID STATE CHANGE> qp_state_xsit=%x",
926 my_qp, ibqp->qp_num, statetrans);
927
928 /* sqe -> rts: set purge bit of bad wqe before actual trans */
929 if ((my_qp->qp_type == IB_QPT_UD ||
930 my_qp->qp_type == IB_QPT_GSI ||
931 my_qp->qp_type == IB_QPT_SMI) &&
932 statetrans == IB_QPST_SQE2RTS) {
933 /* mark next free wqe if kernel */
934 if (my_qp->uspace_squeue == 0) {
935 struct ehca_wqe *wqe;
936 /* lock send queue */
937 spin_lock_irqsave(&my_qp->spinlock_s, spl_flags);
938 squeue_locked = 1;
939 /* mark next free wqe */
940 wqe = (struct ehca_wqe*)
941 ipz_qeit_get(&my_qp->ipz_squeue);
942 wqe->optype = wqe->wqef = 0xff;
943 ehca_dbg(ibqp->device, "qp_num=%x next_free_wqe=%p",
944 ibqp->qp_num, wqe);
945 }
946 ret = prepare_sqe_rts(my_qp, shca, &bad_wqe_cnt);
947 if (ret) {
948 ehca_err(ibqp->device, "prepare_sqe_rts() failed "
949 "ehca_qp=%p qp_num=%x ret=%x",
950 my_qp, ibqp->qp_num, ret);
951 goto modify_qp_exit2;
952 }
953 }
954
955 /*
956 * enable RDMA_Atomic_Control if reset->init und reliable con
957 * this is necessary since gen2 does not provide that flag,
958 * but pHyp requires it
959 */
960 if (statetrans == IB_QPST_RESET2INIT &&
961 (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_UC)) {
962 mqpcb->rdma_atomic_ctrl = 3;
963 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RDMA_ATOMIC_CTRL, 1);
964 }
965 /* circ. pHyp requires #RDMA/Atomic Resp Res for UC INIT -> RTR */
966 if (statetrans == IB_QPST_INIT2RTR &&
967 (ibqp->qp_type == IB_QPT_UC) &&
968 !(attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)) {
969 mqpcb->rdma_nr_atomic_resp_res = 1; /* default to 1 */
970 update_mask |=
971 EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
972 }
973
974 if (attr_mask & IB_QP_PKEY_INDEX) {
975 mqpcb->prim_p_key_idx = attr->pkey_index;
976 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1);
977 }
978 if (attr_mask & IB_QP_PORT) {
979 if (attr->port_num < 1 || attr->port_num > shca->num_ports) {
980 ret = -EINVAL;
981 ehca_err(ibqp->device, "Invalid port=%x. "
982 "ehca_qp=%p qp_num=%x num_ports=%x",
983 attr->port_num, my_qp, ibqp->qp_num,
984 shca->num_ports);
985 goto modify_qp_exit2;
986 }
987 mqpcb->prim_phys_port = attr->port_num;
988 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1);
989 }
990 if (attr_mask & IB_QP_QKEY) {
991 mqpcb->qkey = attr->qkey;
992 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_QKEY, 1);
993 }
994 if (attr_mask & IB_QP_AV) {
995 int ah_mult = ib_rate_to_mult(attr->ah_attr.static_rate);
996 int ehca_mult = ib_rate_to_mult(shca->sport[my_qp->
997 init_attr.port_num].rate);
998
999 mqpcb->dlid = attr->ah_attr.dlid;
1000 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID, 1);
1001 mqpcb->source_path_bits = attr->ah_attr.src_path_bits;
1002 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS, 1);
1003 mqpcb->service_level = attr->ah_attr.sl;
1004 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL, 1);
1005
1006 if (ah_mult < ehca_mult)
1007 mqpcb->max_static_rate = (ah_mult > 0) ?
1008 ((ehca_mult - 1) / ah_mult) : 0;
1009 else
1010 mqpcb->max_static_rate = 0;
1011
1012 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE, 1);
1013
1014 /*
1015 * only if GRH is TRUE we might consider SOURCE_GID_IDX
1016 * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
1017 */
1018 if (attr->ah_attr.ah_flags == IB_AH_GRH) {
1019 mqpcb->send_grh_flag = 1 << 31;
1020 update_mask |=
1021 EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1);
1022 mqpcb->source_gid_idx = attr->ah_attr.grh.sgid_index;
1023 update_mask |=
1024 EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX, 1);
1025
1026 for (cnt = 0; cnt < 16; cnt++)
1027 mqpcb->dest_gid.byte[cnt] =
1028 attr->ah_attr.grh.dgid.raw[cnt];
1029
1030 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_GID, 1);
1031 mqpcb->flow_label = attr->ah_attr.grh.flow_label;
1032 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL, 1);
1033 mqpcb->hop_limit = attr->ah_attr.grh.hop_limit;
1034 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT, 1);
1035 mqpcb->traffic_class = attr->ah_attr.grh.traffic_class;
1036 update_mask |=
1037 EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS, 1);
1038 }
1039 }
1040
1041 if (attr_mask & IB_QP_PATH_MTU) {
1042 mqpcb->path_mtu = attr->path_mtu;
1043 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1);
1044 }
1045 if (attr_mask & IB_QP_TIMEOUT) {
1046 mqpcb->timeout = attr->timeout;
1047 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT, 1);
1048 }
1049 if (attr_mask & IB_QP_RETRY_CNT) {
1050 mqpcb->retry_count = attr->retry_cnt;
1051 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT, 1);
1052 }
1053 if (attr_mask & IB_QP_RNR_RETRY) {
1054 mqpcb->rnr_retry_count = attr->rnr_retry;
1055 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT, 1);
1056 }
1057 if (attr_mask & IB_QP_RQ_PSN) {
1058 mqpcb->receive_psn = attr->rq_psn;
1059 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RECEIVE_PSN, 1);
1060 }
1061 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
1062 mqpcb->rdma_nr_atomic_resp_res = attr->max_dest_rd_atomic < 3 ?
1063 attr->max_dest_rd_atomic : 2;
1064 update_mask |=
1065 EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
1066 }
1067 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
1068 mqpcb->rdma_atomic_outst_dest_qp = attr->max_rd_atomic < 3 ?
1069 attr->max_rd_atomic : 2;
1070 update_mask |=
1071 EHCA_BMASK_SET
1072 (MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP, 1);
1073 }
1074 if (attr_mask & IB_QP_ALT_PATH) {
1075 int ah_mult = ib_rate_to_mult(attr->alt_ah_attr.static_rate);
1076 int ehca_mult = ib_rate_to_mult(
1077 shca->sport[my_qp->init_attr.port_num].rate);
1078
1079 mqpcb->dlid_al = attr->alt_ah_attr.dlid;
1080 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1);
1081 mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits;
1082 update_mask |=
1083 EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1);
1084 mqpcb->service_level_al = attr->alt_ah_attr.sl;
1085 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1);
1086
1087 if (ah_mult < ehca_mult)
1088 mqpcb->max_static_rate = (ah_mult > 0) ?
1089 ((ehca_mult - 1) / ah_mult) : 0;
1090 else
1091 mqpcb->max_static_rate_al = 0;
1092
1093 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1);
1094
1095 /*
1096 * only if GRH is TRUE we might consider SOURCE_GID_IDX
1097 * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
1098 */
1099 if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) {
1100 mqpcb->send_grh_flag_al = 1 << 31;
1101 update_mask |=
1102 EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1);
1103 mqpcb->source_gid_idx_al =
1104 attr->alt_ah_attr.grh.sgid_index;
1105 update_mask |=
1106 EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1);
1107
1108 for (cnt = 0; cnt < 16; cnt++)
1109 mqpcb->dest_gid_al.byte[cnt] =
1110 attr->alt_ah_attr.grh.dgid.raw[cnt];
1111
1112 update_mask |=
1113 EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1);
1114 mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label;
1115 update_mask |=
1116 EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1);
1117 mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit;
1118 update_mask |=
1119 EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1);
1120 mqpcb->traffic_class_al =
1121 attr->alt_ah_attr.grh.traffic_class;
1122 update_mask |=
1123 EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1);
1124 }
1125 }
1126
1127 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
1128 mqpcb->min_rnr_nak_timer_field = attr->min_rnr_timer;
1129 update_mask |=
1130 EHCA_BMASK_SET(MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD, 1);
1131 }
1132
1133 if (attr_mask & IB_QP_SQ_PSN) {
1134 mqpcb->send_psn = attr->sq_psn;
1135 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_PSN, 1);
1136 }
1137
1138 if (attr_mask & IB_QP_DEST_QPN) {
1139 mqpcb->dest_qp_nr = attr->dest_qp_num;
1140 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_QP_NR, 1);
1141 }
1142
1143 if (attr_mask & IB_QP_PATH_MIG_STATE) {
1144 mqpcb->path_migration_state = attr->path_mig_state;
1145 update_mask |=
1146 EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
1147 }
1148
1149 if (attr_mask & IB_QP_CAP) {
1150 mqpcb->max_nr_outst_send_wr = attr->cap.max_send_wr+1;
1151 update_mask |=
1152 EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_SEND_WR, 1);
1153 mqpcb->max_nr_outst_recv_wr = attr->cap.max_recv_wr+1;
1154 update_mask |=
1155 EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_RECV_WR, 1);
1156 /* no support for max_send/recv_sge yet */
1157 }
1158
1159 if (ehca_debug_level)
1160 ehca_dmp(mqpcb, 4*70, "qp_num=%x", ibqp->qp_num);
1161
1162 h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
1163 my_qp->ipz_qp_handle,
1164 &my_qp->pf,
1165 update_mask,
1166 mqpcb, my_qp->galpas.kernel);
1167
1168 if (h_ret != H_SUCCESS) {
1169 ret = ehca2ib_return_code(h_ret);
1170 ehca_err(ibqp->device, "hipz_h_modify_qp() failed rc=%lx "
1171 "ehca_qp=%p qp_num=%x",h_ret, my_qp, ibqp->qp_num);
1172 goto modify_qp_exit2;
1173 }
1174
1175 if ((my_qp->qp_type == IB_QPT_UD ||
1176 my_qp->qp_type == IB_QPT_GSI ||
1177 my_qp->qp_type == IB_QPT_SMI) &&
1178 statetrans == IB_QPST_SQE2RTS) {
1179 /* doorbell to reprocessing wqes */
1180 iosync(); /* serialize GAL register access */
1181 hipz_update_sqa(my_qp, bad_wqe_cnt-1);
1182 ehca_gen_dbg("doorbell for %x wqes", bad_wqe_cnt);
1183 }
1184
1185 if (statetrans == IB_QPST_RESET2INIT ||
1186 statetrans == IB_QPST_INIT2INIT) {
1187 mqpcb->qp_enable = 1;
1188 mqpcb->qp_state = EHCA_QPS_INIT;
1189 update_mask = 0;
1190 update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1);
1191
1192 h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
1193 my_qp->ipz_qp_handle,
1194 &my_qp->pf,
1195 update_mask,
1196 mqpcb,
1197 my_qp->galpas.kernel);
1198
1199 if (h_ret != H_SUCCESS) {
1200 ret = ehca2ib_return_code(h_ret);
1201 ehca_err(ibqp->device, "ENABLE in context of "
1202 "RESET_2_INIT failed! Maybe you didn't get "
1203 "a LID h_ret=%lx ehca_qp=%p qp_num=%x",
1204 h_ret, my_qp, ibqp->qp_num);
1205 goto modify_qp_exit2;
1206 }
1207 }
1208
1209 if (statetrans == IB_QPST_ANY2RESET) {
1210 ipz_qeit_reset(&my_qp->ipz_rqueue);
1211 ipz_qeit_reset(&my_qp->ipz_squeue);
1212 }
1213
1214 if (attr_mask & IB_QP_QKEY)
1215 my_qp->qkey = attr->qkey;
1216
1217 modify_qp_exit2:
1218 if (squeue_locked) { /* this means: sqe -> rts */
1219 spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags);
1220 my_qp->sqerr_purgeflag = 1;
1221 }
1222
1223 modify_qp_exit1:
1224 ehca_free_fw_ctrlblock(mqpcb);
1225
1226 return ret;
1227 }
1228
1229 int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
1230 struct ib_udata *udata)
1231 {
1232 struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
1233 struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
1234 ib_pd);
1235 u32 cur_pid = current->tgid;
1236
1237 if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
1238 my_pd->ownpid != cur_pid) {
1239 ehca_err(ibqp->pd->device, "Invalid caller pid=%x ownpid=%x",
1240 cur_pid, my_pd->ownpid);
1241 return -EINVAL;
1242 }
1243
1244 return internal_modify_qp(ibqp, attr, attr_mask, 0);
1245 }
1246
1247 int ehca_query_qp(struct ib_qp *qp,
1248 struct ib_qp_attr *qp_attr,
1249 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
1250 {
1251 struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
1252 struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
1253 ib_pd);
1254 struct ehca_shca *shca = container_of(qp->device, struct ehca_shca,
1255 ib_device);
1256 struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle;
1257 struct hcp_modify_qp_control_block *qpcb;
1258 u32 cur_pid = current->tgid;
1259 int cnt, ret = 0;
1260 u64 h_ret;
1261
1262 if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
1263 my_pd->ownpid != cur_pid) {
1264 ehca_err(qp->device, "Invalid caller pid=%x ownpid=%x",
1265 cur_pid, my_pd->ownpid);
1266 return -EINVAL;
1267 }
1268
1269 if (qp_attr_mask & QP_ATTR_QUERY_NOT_SUPPORTED) {
1270 ehca_err(qp->device,"Invalid attribute mask "
1271 "ehca_qp=%p qp_num=%x qp_attr_mask=%x ",
1272 my_qp, qp->qp_num, qp_attr_mask);
1273 return -EINVAL;
1274 }
1275
1276 qpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
1277 if (!qpcb) {
1278 ehca_err(qp->device,"Out of memory for qpcb "
1279 "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num);
1280 return -ENOMEM;
1281 }
1282
1283 h_ret = hipz_h_query_qp(adapter_handle,
1284 my_qp->ipz_qp_handle,
1285 &my_qp->pf,
1286 qpcb, my_qp->galpas.kernel);
1287
1288 if (h_ret != H_SUCCESS) {
1289 ret = ehca2ib_return_code(h_ret);
1290 ehca_err(qp->device,"hipz_h_query_qp() failed "
1291 "ehca_qp=%p qp_num=%x h_ret=%lx",
1292 my_qp, qp->qp_num, h_ret);
1293 goto query_qp_exit1;
1294 }
1295
1296 qp_attr->cur_qp_state = ehca2ib_qp_state(qpcb->qp_state);
1297 qp_attr->qp_state = qp_attr->cur_qp_state;
1298
1299 if (qp_attr->cur_qp_state == -EINVAL) {
1300 ret = -EINVAL;
1301 ehca_err(qp->device,"Got invalid ehca_qp_state=%x "
1302 "ehca_qp=%p qp_num=%x",
1303 qpcb->qp_state, my_qp, qp->qp_num);
1304 goto query_qp_exit1;
1305 }
1306
1307 if (qp_attr->qp_state == IB_QPS_SQD)
1308 qp_attr->sq_draining = 1;
1309
1310 qp_attr->qkey = qpcb->qkey;
1311 qp_attr->path_mtu = qpcb->path_mtu;
1312 qp_attr->path_mig_state = qpcb->path_migration_state;
1313 qp_attr->rq_psn = qpcb->receive_psn;
1314 qp_attr->sq_psn = qpcb->send_psn;
1315 qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field;
1316 qp_attr->cap.max_send_wr = qpcb->max_nr_outst_send_wr-1;
1317 qp_attr->cap.max_recv_wr = qpcb->max_nr_outst_recv_wr-1;
1318 /* UD_AV CIRCUMVENTION */
1319 if (my_qp->qp_type == IB_QPT_UD) {
1320 qp_attr->cap.max_send_sge =
1321 qpcb->actual_nr_sges_in_sq_wqe - 2;
1322 qp_attr->cap.max_recv_sge =
1323 qpcb->actual_nr_sges_in_rq_wqe - 2;
1324 } else {
1325 qp_attr->cap.max_send_sge =
1326 qpcb->actual_nr_sges_in_sq_wqe;
1327 qp_attr->cap.max_recv_sge =
1328 qpcb->actual_nr_sges_in_rq_wqe;
1329 }
1330
1331 qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size;
1332 qp_attr->dest_qp_num = qpcb->dest_qp_nr;
1333
1334 qp_attr->pkey_index =
1335 EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->prim_p_key_idx);
1336
1337 qp_attr->port_num =
1338 EHCA_BMASK_GET(MQPCB_PRIM_PHYS_PORT, qpcb->prim_phys_port);
1339
1340 qp_attr->timeout = qpcb->timeout;
1341 qp_attr->retry_cnt = qpcb->retry_count;
1342 qp_attr->rnr_retry = qpcb->rnr_retry_count;
1343
1344 qp_attr->alt_pkey_index =
1345 EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->alt_p_key_idx);
1346
1347 qp_attr->alt_port_num = qpcb->alt_phys_port;
1348 qp_attr->alt_timeout = qpcb->timeout_al;
1349
1350 /* primary av */
1351 qp_attr->ah_attr.sl = qpcb->service_level;
1352
1353 if (qpcb->send_grh_flag) {
1354 qp_attr->ah_attr.ah_flags = IB_AH_GRH;
1355 }
1356
1357 qp_attr->ah_attr.static_rate = qpcb->max_static_rate;
1358 qp_attr->ah_attr.dlid = qpcb->dlid;
1359 qp_attr->ah_attr.src_path_bits = qpcb->source_path_bits;
1360 qp_attr->ah_attr.port_num = qp_attr->port_num;
1361
1362 /* primary GRH */
1363 qp_attr->ah_attr.grh.traffic_class = qpcb->traffic_class;
1364 qp_attr->ah_attr.grh.hop_limit = qpcb->hop_limit;
1365 qp_attr->ah_attr.grh.sgid_index = qpcb->source_gid_idx;
1366 qp_attr->ah_attr.grh.flow_label = qpcb->flow_label;
1367
1368 for (cnt = 0; cnt < 16; cnt++)
1369 qp_attr->ah_attr.grh.dgid.raw[cnt] =
1370 qpcb->dest_gid.byte[cnt];
1371
1372 /* alternate AV */
1373 qp_attr->alt_ah_attr.sl = qpcb->service_level_al;
1374 if (qpcb->send_grh_flag_al) {
1375 qp_attr->alt_ah_attr.ah_flags = IB_AH_GRH;
1376 }
1377
1378 qp_attr->alt_ah_attr.static_rate = qpcb->max_static_rate_al;
1379 qp_attr->alt_ah_attr.dlid = qpcb->dlid_al;
1380 qp_attr->alt_ah_attr.src_path_bits = qpcb->source_path_bits_al;
1381
1382 /* alternate GRH */
1383 qp_attr->alt_ah_attr.grh.traffic_class = qpcb->traffic_class_al;
1384 qp_attr->alt_ah_attr.grh.hop_limit = qpcb->hop_limit_al;
1385 qp_attr->alt_ah_attr.grh.sgid_index = qpcb->source_gid_idx_al;
1386 qp_attr->alt_ah_attr.grh.flow_label = qpcb->flow_label_al;
1387
1388 for (cnt = 0; cnt < 16; cnt++)
1389 qp_attr->alt_ah_attr.grh.dgid.raw[cnt] =
1390 qpcb->dest_gid_al.byte[cnt];
1391
1392 /* return init attributes given in ehca_create_qp */
1393 if (qp_init_attr)
1394 *qp_init_attr = my_qp->init_attr;
1395
1396 if (ehca_debug_level)
1397 ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num);
1398
1399 query_qp_exit1:
1400 ehca_free_fw_ctrlblock(qpcb);
1401
1402 return ret;
1403 }
1404
1405 int ehca_destroy_qp(struct ib_qp *ibqp)
1406 {
1407 struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
1408 struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
1409 ib_device);
1410 struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
1411 ib_pd);
1412 u32 cur_pid = current->tgid;
1413 u32 qp_num = ibqp->qp_num;
1414 int ret;
1415 u64 h_ret;
1416 u8 port_num;
1417 enum ib_qp_type qp_type;
1418 unsigned long flags;
1419
1420 if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
1421 my_pd->ownpid != cur_pid) {
1422 ehca_err(ibqp->device, "Invalid caller pid=%x ownpid=%x",
1423 cur_pid, my_pd->ownpid);
1424 return -EINVAL;
1425 }
1426
1427 if (my_qp->send_cq) {
1428 ret = ehca_cq_unassign_qp(my_qp->send_cq,
1429 my_qp->real_qp_num);
1430 if (ret) {
1431 ehca_err(ibqp->device, "Couldn't unassign qp from "
1432 "send_cq ret=%x qp_num=%x cq_num=%x", ret,
1433 my_qp->ib_qp.qp_num, my_qp->send_cq->cq_number);
1434 return ret;
1435 }
1436 }
1437
1438 spin_lock_irqsave(&ehca_qp_idr_lock, flags);
1439 idr_remove(&ehca_qp_idr, my_qp->token);
1440 spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
1441
1442 /* un-mmap if vma alloc */
1443 if (my_qp->uspace_rqueue) {
1444 ret = ehca_munmap(my_qp->uspace_rqueue,
1445 my_qp->ipz_rqueue.queue_length);
1446 if (ret)
1447 ehca_err(ibqp->device, "Could not munmap rqueue "
1448 "qp_num=%x", qp_num);
1449 ret = ehca_munmap(my_qp->uspace_squeue,
1450 my_qp->ipz_squeue.queue_length);
1451 if (ret)
1452 ehca_err(ibqp->device, "Could not munmap squeue "
1453 "qp_num=%x", qp_num);
1454 ret = ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE);
1455 if (ret)
1456 ehca_err(ibqp->device, "Could not munmap fwh qp_num=%x",
1457 qp_num);
1458 }
1459
1460 h_ret = hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
1461 if (h_ret != H_SUCCESS) {
1462 ehca_err(ibqp->device, "hipz_h_destroy_qp() failed rc=%lx "
1463 "ehca_qp=%p qp_num=%x", h_ret, my_qp, qp_num);
1464 return ehca2ib_return_code(h_ret);
1465 }
1466
1467 port_num = my_qp->init_attr.port_num;
1468 qp_type = my_qp->init_attr.qp_type;
1469
1470 /* no support for IB_QPT_SMI yet */
1471 if (qp_type == IB_QPT_GSI) {
1472 struct ib_event event;
1473 ehca_info(ibqp->device, "device %s: port %x is inactive.",
1474 shca->ib_device.name, port_num);
1475 event.device = &shca->ib_device;
1476 event.event = IB_EVENT_PORT_ERR;
1477 event.element.port_num = port_num;
1478 shca->sport[port_num - 1].port_state = IB_PORT_DOWN;
1479 ib_dispatch_event(&event);
1480 }
1481
1482 ipz_queue_dtor(&my_qp->ipz_rqueue);
1483 ipz_queue_dtor(&my_qp->ipz_squeue);
1484 kmem_cache_free(qp_cache, my_qp);
1485 return 0;
1486 }
1487
1488 int ehca_init_qp_cache(void)
1489 {
1490 qp_cache = kmem_cache_create("ehca_cache_qp",
1491 sizeof(struct ehca_qp), 0,
1492 SLAB_HWCACHE_ALIGN,
1493 NULL, NULL);
1494 if (!qp_cache)
1495 return -ENOMEM;
1496 return 0;
1497 }
1498
1499 void ehca_cleanup_qp_cache(void)
1500 {
1501 if (qp_cache)
1502 kmem_cache_destroy(qp_cache);
1503 }
Linux with added FPC-III support