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IB/uverbs: Pass userspace data to modify_srq and modify_qp methods
[deliverable/linux.git] / drivers / infiniband / hw / ehca / ehca_qp.c
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, SLAB_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 void *squeue_start_p, *squeue_end_p;
736 void *squeue_start_v, *squeue_end_v;
737 struct ehca_wqe *wqe;
738 int qp_num = my_qp->ib_qp.qp_num;
739
740 /* get send wqe pointer */
741 h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle,
742 my_qp->ipz_qp_handle, &my_qp->pf,
743 &bad_send_wqe_p, NULL, 2);
744 if (h_ret != H_SUCCESS) {
745 ehca_err(&shca->ib_device, "hipz_h_disable_and_get_wqe() failed"
746 " ehca_qp=%p qp_num=%x h_ret=%lx",
747 my_qp, qp_num, h_ret);
748 return ehca2ib_return_code(h_ret);
749 }
750 bad_send_wqe_p = (void*)((u64)bad_send_wqe_p & (~(1L<<63)));
751 ehca_dbg(&shca->ib_device, "qp_num=%x bad_send_wqe_p=%p",
752 qp_num, bad_send_wqe_p);
753 /* convert wqe pointer to vadr */
754 bad_send_wqe_v = abs_to_virt((u64)bad_send_wqe_p);
755 if (ehca_debug_level)
756 ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num);
757 squeue = &my_qp->ipz_squeue;
758 squeue_start_p = (void*)virt_to_abs(ipz_qeit_calc(squeue, 0L));
759 squeue_end_p = squeue_start_p+squeue->queue_length;
760 squeue_start_v = abs_to_virt((u64)squeue_start_p);
761 squeue_end_v = abs_to_virt((u64)squeue_end_p);
762 ehca_dbg(&shca->ib_device, "qp_num=%x squeue_start_v=%p squeue_end_v=%p",
763 qp_num, squeue_start_v, squeue_end_v);
764
765 /* loop sets wqe's purge bit */
766 wqe = (struct ehca_wqe*)bad_send_wqe_v;
767 *bad_wqe_cnt = 0;
768 while (wqe->optype != 0xff && wqe->wqef != 0xff) {
769 if (ehca_debug_level)
770 ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num);
771 wqe->nr_of_data_seg = 0; /* suppress data access */
772 wqe->wqef = WQEF_PURGE; /* WQE to be purged */
773 wqe = (struct ehca_wqe*)((u8*)wqe+squeue->qe_size);
774 *bad_wqe_cnt = (*bad_wqe_cnt)+1;
775 if ((void*)wqe >= squeue_end_v) {
776 wqe = squeue_start_v;
777 }
778 }
779 /*
780 * bad wqe will be reprocessed and ignored when pol_cq() is called,
781 * i.e. nr of wqes with flush error status is one less
782 */
783 ehca_dbg(&shca->ib_device, "qp_num=%x flusherr_wqe_cnt=%x",
784 qp_num, (*bad_wqe_cnt)-1);
785 wqe->wqef = 0;
786
787 return 0;
788 }
789
790 /*
791 * internal_modify_qp with circumvention to handle aqp0 properly
792 * smi_reset2init indicates if this is an internal reset-to-init-call for
793 * smi. This flag must always be zero if called from ehca_modify_qp()!
794 * This internal func was intorduced to avoid recursion of ehca_modify_qp()!
795 */
796 static int internal_modify_qp(struct ib_qp *ibqp,
797 struct ib_qp_attr *attr,
798 int attr_mask, int smi_reset2init)
799 {
800 enum ib_qp_state qp_cur_state, qp_new_state;
801 int cnt, qp_attr_idx, ret = 0;
802 enum ib_qp_statetrans statetrans;
803 struct hcp_modify_qp_control_block *mqpcb;
804 struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
805 struct ehca_shca *shca =
806 container_of(ibqp->pd->device, struct ehca_shca, ib_device);
807 u64 update_mask;
808 u64 h_ret;
809 int bad_wqe_cnt = 0;
810 int squeue_locked = 0;
811 unsigned long spl_flags = 0;
812
813 /* do query_qp to obtain current attr values */
814 mqpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
815 if (mqpcb == NULL) {
816 ehca_err(ibqp->device, "Could not get zeroed page for mqpcb "
817 "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num);
818 return -ENOMEM;
819 }
820
821 h_ret = hipz_h_query_qp(shca->ipz_hca_handle,
822 my_qp->ipz_qp_handle,
823 &my_qp->pf,
824 mqpcb, my_qp->galpas.kernel);
825 if (h_ret != H_SUCCESS) {
826 ehca_err(ibqp->device, "hipz_h_query_qp() failed "
827 "ehca_qp=%p qp_num=%x h_ret=%lx",
828 my_qp, ibqp->qp_num, h_ret);
829 ret = ehca2ib_return_code(h_ret);
830 goto modify_qp_exit1;
831 }
832
833 qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state);
834
835 if (qp_cur_state == -EINVAL) { /* invalid qp state */
836 ret = -EINVAL;
837 ehca_err(ibqp->device, "Invalid current ehca_qp_state=%x "
838 "ehca_qp=%p qp_num=%x",
839 mqpcb->qp_state, my_qp, ibqp->qp_num);
840 goto modify_qp_exit1;
841 }
842 /*
843 * circumvention to set aqp0 initial state to init
844 * as expected by IB spec
845 */
846 if (smi_reset2init == 0 &&
847 ibqp->qp_type == IB_QPT_SMI &&
848 qp_cur_state == IB_QPS_RESET &&
849 (attr_mask & IB_QP_STATE) &&
850 attr->qp_state == IB_QPS_INIT) { /* RESET -> INIT */
851 struct ib_qp_attr smiqp_attr = {
852 .qp_state = IB_QPS_INIT,
853 .port_num = my_qp->init_attr.port_num,
854 .pkey_index = 0,
855 .qkey = 0
856 };
857 int smiqp_attr_mask = IB_QP_STATE | IB_QP_PORT |
858 IB_QP_PKEY_INDEX | IB_QP_QKEY;
859 int smirc = internal_modify_qp(
860 ibqp, &smiqp_attr, smiqp_attr_mask, 1);
861 if (smirc) {
862 ehca_err(ibqp->device, "SMI RESET -> INIT failed. "
863 "ehca_modify_qp() rc=%x", smirc);
864 ret = H_PARAMETER;
865 goto modify_qp_exit1;
866 }
867 qp_cur_state = IB_QPS_INIT;
868 ehca_dbg(ibqp->device, "SMI RESET -> INIT succeeded");
869 }
870 /* is transmitted current state equal to "real" current state */
871 if ((attr_mask & IB_QP_CUR_STATE) &&
872 qp_cur_state != attr->cur_qp_state) {
873 ret = -EINVAL;
874 ehca_err(ibqp->device,
875 "Invalid IB_QP_CUR_STATE attr->curr_qp_state=%x <>"
876 " actual cur_qp_state=%x. ehca_qp=%p qp_num=%x",
877 attr->cur_qp_state, qp_cur_state, my_qp, ibqp->qp_num);
878 goto modify_qp_exit1;
879 }
880
881 ehca_dbg(ibqp->device,"ehca_qp=%p qp_num=%x current qp_state=%x "
882 "new qp_state=%x attribute_mask=%x",
883 my_qp, ibqp->qp_num, qp_cur_state, attr->qp_state, attr_mask);
884
885 qp_new_state = attr_mask & IB_QP_STATE ? attr->qp_state : qp_cur_state;
886 if (!smi_reset2init &&
887 !ib_modify_qp_is_ok(qp_cur_state, qp_new_state, ibqp->qp_type,
888 attr_mask)) {
889 ret = -EINVAL;
890 ehca_err(ibqp->device,
891 "Invalid qp transition new_state=%x cur_state=%x "
892 "ehca_qp=%p qp_num=%x attr_mask=%x", qp_new_state,
893 qp_cur_state, my_qp, ibqp->qp_num, attr_mask);
894 goto modify_qp_exit1;
895 }
896
897 if ((mqpcb->qp_state = ib2ehca_qp_state(qp_new_state)))
898 update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
899 else {
900 ret = -EINVAL;
901 ehca_err(ibqp->device, "Invalid new qp state=%x "
902 "ehca_qp=%p qp_num=%x",
903 qp_new_state, my_qp, ibqp->qp_num);
904 goto modify_qp_exit1;
905 }
906
907 /* retrieve state transition struct to get req and opt attrs */
908 statetrans = get_modqp_statetrans(qp_cur_state, qp_new_state);
909 if (statetrans < 0) {
910 ret = -EINVAL;
911 ehca_err(ibqp->device, "<INVALID STATE CHANGE> qp_cur_state=%x "
912 "new_qp_state=%x State_xsition=%x ehca_qp=%p "
913 "qp_num=%x", qp_cur_state, qp_new_state,
914 statetrans, my_qp, ibqp->qp_num);
915 goto modify_qp_exit1;
916 }
917
918 qp_attr_idx = ib2ehcaqptype(ibqp->qp_type);
919
920 if (qp_attr_idx < 0) {
921 ret = qp_attr_idx;
922 ehca_err(ibqp->device,
923 "Invalid QP type=%x ehca_qp=%p qp_num=%x",
924 ibqp->qp_type, my_qp, ibqp->qp_num);
925 goto modify_qp_exit1;
926 }
927
928 ehca_dbg(ibqp->device,
929 "ehca_qp=%p qp_num=%x <VALID STATE CHANGE> qp_state_xsit=%x",
930 my_qp, ibqp->qp_num, statetrans);
931
932 /* sqe -> rts: set purge bit of bad wqe before actual trans */
933 if ((my_qp->qp_type == IB_QPT_UD ||
934 my_qp->qp_type == IB_QPT_GSI ||
935 my_qp->qp_type == IB_QPT_SMI) &&
936 statetrans == IB_QPST_SQE2RTS) {
937 /* mark next free wqe if kernel */
938 if (my_qp->uspace_squeue == 0) {
939 struct ehca_wqe *wqe;
940 /* lock send queue */
941 spin_lock_irqsave(&my_qp->spinlock_s, spl_flags);
942 squeue_locked = 1;
943 /* mark next free wqe */
944 wqe = (struct ehca_wqe*)
945 ipz_qeit_get(&my_qp->ipz_squeue);
946 wqe->optype = wqe->wqef = 0xff;
947 ehca_dbg(ibqp->device, "qp_num=%x next_free_wqe=%p",
948 ibqp->qp_num, wqe);
949 }
950 ret = prepare_sqe_rts(my_qp, shca, &bad_wqe_cnt);
951 if (ret) {
952 ehca_err(ibqp->device, "prepare_sqe_rts() failed "
953 "ehca_qp=%p qp_num=%x ret=%x",
954 my_qp, ibqp->qp_num, ret);
955 goto modify_qp_exit2;
956 }
957 }
958
959 /*
960 * enable RDMA_Atomic_Control if reset->init und reliable con
961 * this is necessary since gen2 does not provide that flag,
962 * but pHyp requires it
963 */
964 if (statetrans == IB_QPST_RESET2INIT &&
965 (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_UC)) {
966 mqpcb->rdma_atomic_ctrl = 3;
967 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RDMA_ATOMIC_CTRL, 1);
968 }
969 /* circ. pHyp requires #RDMA/Atomic Resp Res for UC INIT -> RTR */
970 if (statetrans == IB_QPST_INIT2RTR &&
971 (ibqp->qp_type == IB_QPT_UC) &&
972 !(attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)) {
973 mqpcb->rdma_nr_atomic_resp_res = 1; /* default to 1 */
974 update_mask |=
975 EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
976 }
977
978 if (attr_mask & IB_QP_PKEY_INDEX) {
979 mqpcb->prim_p_key_idx = attr->pkey_index;
980 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1);
981 }
982 if (attr_mask & IB_QP_PORT) {
983 if (attr->port_num < 1 || attr->port_num > shca->num_ports) {
984 ret = -EINVAL;
985 ehca_err(ibqp->device, "Invalid port=%x. "
986 "ehca_qp=%p qp_num=%x num_ports=%x",
987 attr->port_num, my_qp, ibqp->qp_num,
988 shca->num_ports);
989 goto modify_qp_exit2;
990 }
991 mqpcb->prim_phys_port = attr->port_num;
992 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1);
993 }
994 if (attr_mask & IB_QP_QKEY) {
995 mqpcb->qkey = attr->qkey;
996 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_QKEY, 1);
997 }
998 if (attr_mask & IB_QP_AV) {
999 int ah_mult = ib_rate_to_mult(attr->ah_attr.static_rate);
1000 int ehca_mult = ib_rate_to_mult(shca->sport[my_qp->
1001 init_attr.port_num].rate);
1002
1003 mqpcb->dlid = attr->ah_attr.dlid;
1004 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID, 1);
1005 mqpcb->source_path_bits = attr->ah_attr.src_path_bits;
1006 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS, 1);
1007 mqpcb->service_level = attr->ah_attr.sl;
1008 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL, 1);
1009
1010 if (ah_mult < ehca_mult)
1011 mqpcb->max_static_rate = (ah_mult > 0) ?
1012 ((ehca_mult - 1) / ah_mult) : 0;
1013 else
1014 mqpcb->max_static_rate = 0;
1015
1016 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE, 1);
1017
1018 /*
1019 * only if GRH is TRUE we might consider SOURCE_GID_IDX
1020 * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
1021 */
1022 if (attr->ah_attr.ah_flags == IB_AH_GRH) {
1023 mqpcb->send_grh_flag = 1 << 31;
1024 update_mask |=
1025 EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1);
1026 mqpcb->source_gid_idx = attr->ah_attr.grh.sgid_index;
1027 update_mask |=
1028 EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX, 1);
1029
1030 for (cnt = 0; cnt < 16; cnt++)
1031 mqpcb->dest_gid.byte[cnt] =
1032 attr->ah_attr.grh.dgid.raw[cnt];
1033
1034 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_GID, 1);
1035 mqpcb->flow_label = attr->ah_attr.grh.flow_label;
1036 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL, 1);
1037 mqpcb->hop_limit = attr->ah_attr.grh.hop_limit;
1038 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT, 1);
1039 mqpcb->traffic_class = attr->ah_attr.grh.traffic_class;
1040 update_mask |=
1041 EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS, 1);
1042 }
1043 }
1044
1045 if (attr_mask & IB_QP_PATH_MTU) {
1046 mqpcb->path_mtu = attr->path_mtu;
1047 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1);
1048 }
1049 if (attr_mask & IB_QP_TIMEOUT) {
1050 mqpcb->timeout = attr->timeout;
1051 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT, 1);
1052 }
1053 if (attr_mask & IB_QP_RETRY_CNT) {
1054 mqpcb->retry_count = attr->retry_cnt;
1055 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT, 1);
1056 }
1057 if (attr_mask & IB_QP_RNR_RETRY) {
1058 mqpcb->rnr_retry_count = attr->rnr_retry;
1059 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT, 1);
1060 }
1061 if (attr_mask & IB_QP_RQ_PSN) {
1062 mqpcb->receive_psn = attr->rq_psn;
1063 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RECEIVE_PSN, 1);
1064 }
1065 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
1066 mqpcb->rdma_nr_atomic_resp_res = attr->max_dest_rd_atomic < 3 ?
1067 attr->max_dest_rd_atomic : 2;
1068 update_mask |=
1069 EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
1070 }
1071 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
1072 mqpcb->rdma_atomic_outst_dest_qp = attr->max_rd_atomic < 3 ?
1073 attr->max_rd_atomic : 2;
1074 update_mask |=
1075 EHCA_BMASK_SET
1076 (MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP, 1);
1077 }
1078 if (attr_mask & IB_QP_ALT_PATH) {
1079 int ah_mult = ib_rate_to_mult(attr->alt_ah_attr.static_rate);
1080 int ehca_mult = ib_rate_to_mult(
1081 shca->sport[my_qp->init_attr.port_num].rate);
1082
1083 mqpcb->dlid_al = attr->alt_ah_attr.dlid;
1084 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1);
1085 mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits;
1086 update_mask |=
1087 EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1);
1088 mqpcb->service_level_al = attr->alt_ah_attr.sl;
1089 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1);
1090
1091 if (ah_mult < ehca_mult)
1092 mqpcb->max_static_rate = (ah_mult > 0) ?
1093 ((ehca_mult - 1) / ah_mult) : 0;
1094 else
1095 mqpcb->max_static_rate_al = 0;
1096
1097 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1);
1098
1099 /*
1100 * only if GRH is TRUE we might consider SOURCE_GID_IDX
1101 * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
1102 */
1103 if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) {
1104 mqpcb->send_grh_flag_al = 1 << 31;
1105 update_mask |=
1106 EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1);
1107 mqpcb->source_gid_idx_al =
1108 attr->alt_ah_attr.grh.sgid_index;
1109 update_mask |=
1110 EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1);
1111
1112 for (cnt = 0; cnt < 16; cnt++)
1113 mqpcb->dest_gid_al.byte[cnt] =
1114 attr->alt_ah_attr.grh.dgid.raw[cnt];
1115
1116 update_mask |=
1117 EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1);
1118 mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label;
1119 update_mask |=
1120 EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1);
1121 mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit;
1122 update_mask |=
1123 EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1);
1124 mqpcb->traffic_class_al =
1125 attr->alt_ah_attr.grh.traffic_class;
1126 update_mask |=
1127 EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1);
1128 }
1129 }
1130
1131 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
1132 mqpcb->min_rnr_nak_timer_field = attr->min_rnr_timer;
1133 update_mask |=
1134 EHCA_BMASK_SET(MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD, 1);
1135 }
1136
1137 if (attr_mask & IB_QP_SQ_PSN) {
1138 mqpcb->send_psn = attr->sq_psn;
1139 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_PSN, 1);
1140 }
1141
1142 if (attr_mask & IB_QP_DEST_QPN) {
1143 mqpcb->dest_qp_nr = attr->dest_qp_num;
1144 update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_QP_NR, 1);
1145 }
1146
1147 if (attr_mask & IB_QP_PATH_MIG_STATE) {
1148 mqpcb->path_migration_state = attr->path_mig_state;
1149 update_mask |=
1150 EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
1151 }
1152
1153 if (attr_mask & IB_QP_CAP) {
1154 mqpcb->max_nr_outst_send_wr = attr->cap.max_send_wr+1;
1155 update_mask |=
1156 EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_SEND_WR, 1);
1157 mqpcb->max_nr_outst_recv_wr = attr->cap.max_recv_wr+1;
1158 update_mask |=
1159 EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_RECV_WR, 1);
1160 /* no support for max_send/recv_sge yet */
1161 }
1162
1163 if (ehca_debug_level)
1164 ehca_dmp(mqpcb, 4*70, "qp_num=%x", ibqp->qp_num);
1165
1166 h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
1167 my_qp->ipz_qp_handle,
1168 &my_qp->pf,
1169 update_mask,
1170 mqpcb, my_qp->galpas.kernel);
1171
1172 if (h_ret != H_SUCCESS) {
1173 ret = ehca2ib_return_code(h_ret);
1174 ehca_err(ibqp->device, "hipz_h_modify_qp() failed rc=%lx "
1175 "ehca_qp=%p qp_num=%x",h_ret, my_qp, ibqp->qp_num);
1176 goto modify_qp_exit2;
1177 }
1178
1179 if ((my_qp->qp_type == IB_QPT_UD ||
1180 my_qp->qp_type == IB_QPT_GSI ||
1181 my_qp->qp_type == IB_QPT_SMI) &&
1182 statetrans == IB_QPST_SQE2RTS) {
1183 /* doorbell to reprocessing wqes */
1184 iosync(); /* serialize GAL register access */
1185 hipz_update_sqa(my_qp, bad_wqe_cnt-1);
1186 ehca_gen_dbg("doorbell for %x wqes", bad_wqe_cnt);
1187 }
1188
1189 if (statetrans == IB_QPST_RESET2INIT ||
1190 statetrans == IB_QPST_INIT2INIT) {
1191 mqpcb->qp_enable = 1;
1192 mqpcb->qp_state = EHCA_QPS_INIT;
1193 update_mask = 0;
1194 update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1);
1195
1196 h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
1197 my_qp->ipz_qp_handle,
1198 &my_qp->pf,
1199 update_mask,
1200 mqpcb,
1201 my_qp->galpas.kernel);
1202
1203 if (h_ret != H_SUCCESS) {
1204 ret = ehca2ib_return_code(h_ret);
1205 ehca_err(ibqp->device, "ENABLE in context of "
1206 "RESET_2_INIT failed! Maybe you didn't get "
1207 "a LID h_ret=%lx ehca_qp=%p qp_num=%x",
1208 h_ret, my_qp, ibqp->qp_num);
1209 goto modify_qp_exit2;
1210 }
1211 }
1212
1213 if (statetrans == IB_QPST_ANY2RESET) {
1214 ipz_qeit_reset(&my_qp->ipz_rqueue);
1215 ipz_qeit_reset(&my_qp->ipz_squeue);
1216 }
1217
1218 if (attr_mask & IB_QP_QKEY)
1219 my_qp->qkey = attr->qkey;
1220
1221 modify_qp_exit2:
1222 if (squeue_locked) { /* this means: sqe -> rts */
1223 spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags);
1224 my_qp->sqerr_purgeflag = 1;
1225 }
1226
1227 modify_qp_exit1:
1228 kfree(mqpcb);
1229
1230 return ret;
1231 }
1232
1233 int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
1234 struct ib_udata *udata)
1235 {
1236 struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
1237 struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
1238 ib_pd);
1239 u32 cur_pid = current->tgid;
1240
1241 if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
1242 my_pd->ownpid != cur_pid) {
1243 ehca_err(ibqp->pd->device, "Invalid caller pid=%x ownpid=%x",
1244 cur_pid, my_pd->ownpid);
1245 return -EINVAL;
1246 }
1247
1248 return internal_modify_qp(ibqp, attr, attr_mask, 0);
1249 }
1250
1251 int ehca_query_qp(struct ib_qp *qp,
1252 struct ib_qp_attr *qp_attr,
1253 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
1254 {
1255 struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
1256 struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
1257 ib_pd);
1258 struct ehca_shca *shca = container_of(qp->device, struct ehca_shca,
1259 ib_device);
1260 struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle;
1261 struct hcp_modify_qp_control_block *qpcb;
1262 u32 cur_pid = current->tgid;
1263 int cnt, ret = 0;
1264 u64 h_ret;
1265
1266 if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
1267 my_pd->ownpid != cur_pid) {
1268 ehca_err(qp->device, "Invalid caller pid=%x ownpid=%x",
1269 cur_pid, my_pd->ownpid);
1270 return -EINVAL;
1271 }
1272
1273 if (qp_attr_mask & QP_ATTR_QUERY_NOT_SUPPORTED) {
1274 ehca_err(qp->device,"Invalid attribute mask "
1275 "ehca_qp=%p qp_num=%x qp_attr_mask=%x ",
1276 my_qp, qp->qp_num, qp_attr_mask);
1277 return -EINVAL;
1278 }
1279
1280 qpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL );
1281 if (!qpcb) {
1282 ehca_err(qp->device,"Out of memory for qpcb "
1283 "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num);
1284 return -ENOMEM;
1285 }
1286
1287 h_ret = hipz_h_query_qp(adapter_handle,
1288 my_qp->ipz_qp_handle,
1289 &my_qp->pf,
1290 qpcb, my_qp->galpas.kernel);
1291
1292 if (h_ret != H_SUCCESS) {
1293 ret = ehca2ib_return_code(h_ret);
1294 ehca_err(qp->device,"hipz_h_query_qp() failed "
1295 "ehca_qp=%p qp_num=%x h_ret=%lx",
1296 my_qp, qp->qp_num, h_ret);
1297 goto query_qp_exit1;
1298 }
1299
1300 qp_attr->cur_qp_state = ehca2ib_qp_state(qpcb->qp_state);
1301 qp_attr->qp_state = qp_attr->cur_qp_state;
1302
1303 if (qp_attr->cur_qp_state == -EINVAL) {
1304 ret = -EINVAL;
1305 ehca_err(qp->device,"Got invalid ehca_qp_state=%x "
1306 "ehca_qp=%p qp_num=%x",
1307 qpcb->qp_state, my_qp, qp->qp_num);
1308 goto query_qp_exit1;
1309 }
1310
1311 if (qp_attr->qp_state == IB_QPS_SQD)
1312 qp_attr->sq_draining = 1;
1313
1314 qp_attr->qkey = qpcb->qkey;
1315 qp_attr->path_mtu = qpcb->path_mtu;
1316 qp_attr->path_mig_state = qpcb->path_migration_state;
1317 qp_attr->rq_psn = qpcb->receive_psn;
1318 qp_attr->sq_psn = qpcb->send_psn;
1319 qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field;
1320 qp_attr->cap.max_send_wr = qpcb->max_nr_outst_send_wr-1;
1321 qp_attr->cap.max_recv_wr = qpcb->max_nr_outst_recv_wr-1;
1322 /* UD_AV CIRCUMVENTION */
1323 if (my_qp->qp_type == IB_QPT_UD) {
1324 qp_attr->cap.max_send_sge =
1325 qpcb->actual_nr_sges_in_sq_wqe - 2;
1326 qp_attr->cap.max_recv_sge =
1327 qpcb->actual_nr_sges_in_rq_wqe - 2;
1328 } else {
1329 qp_attr->cap.max_send_sge =
1330 qpcb->actual_nr_sges_in_sq_wqe;
1331 qp_attr->cap.max_recv_sge =
1332 qpcb->actual_nr_sges_in_rq_wqe;
1333 }
1334
1335 qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size;
1336 qp_attr->dest_qp_num = qpcb->dest_qp_nr;
1337
1338 qp_attr->pkey_index =
1339 EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->prim_p_key_idx);
1340
1341 qp_attr->port_num =
1342 EHCA_BMASK_GET(MQPCB_PRIM_PHYS_PORT, qpcb->prim_phys_port);
1343
1344 qp_attr->timeout = qpcb->timeout;
1345 qp_attr->retry_cnt = qpcb->retry_count;
1346 qp_attr->rnr_retry = qpcb->rnr_retry_count;
1347
1348 qp_attr->alt_pkey_index =
1349 EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->alt_p_key_idx);
1350
1351 qp_attr->alt_port_num = qpcb->alt_phys_port;
1352 qp_attr->alt_timeout = qpcb->timeout_al;
1353
1354 /* primary av */
1355 qp_attr->ah_attr.sl = qpcb->service_level;
1356
1357 if (qpcb->send_grh_flag) {
1358 qp_attr->ah_attr.ah_flags = IB_AH_GRH;
1359 }
1360
1361 qp_attr->ah_attr.static_rate = qpcb->max_static_rate;
1362 qp_attr->ah_attr.dlid = qpcb->dlid;
1363 qp_attr->ah_attr.src_path_bits = qpcb->source_path_bits;
1364 qp_attr->ah_attr.port_num = qp_attr->port_num;
1365
1366 /* primary GRH */
1367 qp_attr->ah_attr.grh.traffic_class = qpcb->traffic_class;
1368 qp_attr->ah_attr.grh.hop_limit = qpcb->hop_limit;
1369 qp_attr->ah_attr.grh.sgid_index = qpcb->source_gid_idx;
1370 qp_attr->ah_attr.grh.flow_label = qpcb->flow_label;
1371
1372 for (cnt = 0; cnt < 16; cnt++)
1373 qp_attr->ah_attr.grh.dgid.raw[cnt] =
1374 qpcb->dest_gid.byte[cnt];
1375
1376 /* alternate AV */
1377 qp_attr->alt_ah_attr.sl = qpcb->service_level_al;
1378 if (qpcb->send_grh_flag_al) {
1379 qp_attr->alt_ah_attr.ah_flags = IB_AH_GRH;
1380 }
1381
1382 qp_attr->alt_ah_attr.static_rate = qpcb->max_static_rate_al;
1383 qp_attr->alt_ah_attr.dlid = qpcb->dlid_al;
1384 qp_attr->alt_ah_attr.src_path_bits = qpcb->source_path_bits_al;
1385
1386 /* alternate GRH */
1387 qp_attr->alt_ah_attr.grh.traffic_class = qpcb->traffic_class_al;
1388 qp_attr->alt_ah_attr.grh.hop_limit = qpcb->hop_limit_al;
1389 qp_attr->alt_ah_attr.grh.sgid_index = qpcb->source_gid_idx_al;
1390 qp_attr->alt_ah_attr.grh.flow_label = qpcb->flow_label_al;
1391
1392 for (cnt = 0; cnt < 16; cnt++)
1393 qp_attr->alt_ah_attr.grh.dgid.raw[cnt] =
1394 qpcb->dest_gid_al.byte[cnt];
1395
1396 /* return init attributes given in ehca_create_qp */
1397 if (qp_init_attr)
1398 *qp_init_attr = my_qp->init_attr;
1399
1400 if (ehca_debug_level)
1401 ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num);
1402
1403 query_qp_exit1:
1404 kfree(qpcb);
1405
1406 return ret;
1407 }
1408
1409 int ehca_destroy_qp(struct ib_qp *ibqp)
1410 {
1411 struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
1412 struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
1413 ib_device);
1414 struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
1415 ib_pd);
1416 u32 cur_pid = current->tgid;
1417 u32 qp_num = ibqp->qp_num;
1418 int ret;
1419 u64 h_ret;
1420 u8 port_num;
1421 enum ib_qp_type qp_type;
1422 unsigned long flags;
1423
1424 if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
1425 my_pd->ownpid != cur_pid) {
1426 ehca_err(ibqp->device, "Invalid caller pid=%x ownpid=%x",
1427 cur_pid, my_pd->ownpid);
1428 return -EINVAL;
1429 }
1430
1431 if (my_qp->send_cq) {
1432 ret = ehca_cq_unassign_qp(my_qp->send_cq,
1433 my_qp->real_qp_num);
1434 if (ret) {
1435 ehca_err(ibqp->device, "Couldn't unassign qp from "
1436 "send_cq ret=%x qp_num=%x cq_num=%x", ret,
1437 my_qp->ib_qp.qp_num, my_qp->send_cq->cq_number);
1438 return ret;
1439 }
1440 }
1441
1442 spin_lock_irqsave(&ehca_qp_idr_lock, flags);
1443 idr_remove(&ehca_qp_idr, my_qp->token);
1444 spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
1445
1446 /* un-mmap if vma alloc */
1447 if (my_qp->uspace_rqueue) {
1448 ret = ehca_munmap(my_qp->uspace_rqueue,
1449 my_qp->ipz_rqueue.queue_length);
1450 if (ret)
1451 ehca_err(ibqp->device, "Could not munmap rqueue "
1452 "qp_num=%x", qp_num);
1453 ret = ehca_munmap(my_qp->uspace_squeue,
1454 my_qp->ipz_squeue.queue_length);
1455 if (ret)
1456 ehca_err(ibqp->device, "Could not munmap squeue "
1457 "qp_num=%x", qp_num);
1458 ret = ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE);
1459 if (ret)
1460 ehca_err(ibqp->device, "Could not munmap fwh qp_num=%x",
1461 qp_num);
1462 }
1463
1464 h_ret = hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
1465 if (h_ret != H_SUCCESS) {
1466 ehca_err(ibqp->device, "hipz_h_destroy_qp() failed rc=%lx "
1467 "ehca_qp=%p qp_num=%x", h_ret, my_qp, qp_num);
1468 return ehca2ib_return_code(h_ret);
1469 }
1470
1471 port_num = my_qp->init_attr.port_num;
1472 qp_type = my_qp->init_attr.qp_type;
1473
1474 /* no support for IB_QPT_SMI yet */
1475 if (qp_type == IB_QPT_GSI) {
1476 struct ib_event event;
1477 ehca_info(ibqp->device, "device %s: port %x is inactive.",
1478 shca->ib_device.name, port_num);
1479 event.device = &shca->ib_device;
1480 event.event = IB_EVENT_PORT_ERR;
1481 event.element.port_num = port_num;
1482 shca->sport[port_num - 1].port_state = IB_PORT_DOWN;
1483 ib_dispatch_event(&event);
1484 }
1485
1486 ipz_queue_dtor(&my_qp->ipz_rqueue);
1487 ipz_queue_dtor(&my_qp->ipz_squeue);
1488 kmem_cache_free(qp_cache, my_qp);
1489 return 0;
1490 }
1491
1492 int ehca_init_qp_cache(void)
1493 {
1494 qp_cache = kmem_cache_create("ehca_cache_qp",
1495 sizeof(struct ehca_qp), 0,
1496 SLAB_HWCACHE_ALIGN,
1497 NULL, NULL);
1498 if (!qp_cache)
1499 return -ENOMEM;
1500 return 0;
1501 }
1502
1503 void ehca_cleanup_qp_cache(void)
1504 {
1505 if (qp_cache)
1506 kmem_cache_destroy(qp_cache);
1507 }
Linux kernel - Deliverables
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