?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / infiniband / hw / mthca / mthca_provider.c
blob365fe0e14192ce7ecc715d609327758c03db54b8
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer.
21 *
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 */
36
37 #include <rdma/ib_smi.h>
38 #include <rdma/ib_umem.h>
39 #include <rdma/ib_user_verbs.h>
40
41 #include <linux/sched.h>
42 #include <linux/slab.h>
43 #include <linux/mm.h>
44
45 #include "mthca_dev.h"
46 #include "mthca_cmd.h"
47 #include "mthca_user.h"
48 #include "mthca_memfree.h"
49
50 static void init_query_mad(struct ib_smp *mad)
51 {
52 mad->base_version = 1;
53 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
54 mad->class_version = 1;
55 mad->method = IB_MGMT_METHOD_GET;
56 }
57
58 static int mthca_query_device(struct ib_device *ibdev,
59 struct ib_device_attr *props)
60 {
61 struct ib_smp *in_mad = NULL;
62 struct ib_smp *out_mad = NULL;
63 int err = -ENOMEM;
64 struct mthca_dev *mdev = to_mdev(ibdev);
65
66 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
67 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
68 if (!in_mad || !out_mad)
69 goto out;
70
71 memset(props, 0, sizeof *props);
72
73 props->fw_ver = mdev->fw_ver;
74
75 init_query_mad(in_mad);
76 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
77
78 err = mthca_MAD_IFC(mdev, 1, 1,
79 1, NULL, NULL, in_mad, out_mad);
80 if (err)
81 goto out;
82
83 props->device_cap_flags = mdev->device_cap_flags;
84 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
85 0xffffff;
86 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
87 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
88 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
89
90 props->max_mr_size = ~0ull;
91 props->page_size_cap = mdev->limits.page_size_cap;
92 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
93 props->max_qp_wr = mdev->limits.max_wqes;
94 props->max_sge = mdev->limits.max_sg;
95 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
96 props->max_cqe = mdev->limits.max_cqes;
97 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
98 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
99 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
100 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
101 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
102 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
103 props->max_srq_wr = mdev->limits.max_srq_wqes;
104 props->max_srq_sge = mdev->limits.max_srq_sge;
105 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
106 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
107 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
108 props->max_pkeys = mdev->limits.pkey_table_len;
109 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
110 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
111 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
112 props->max_mcast_grp;
113 /*
114 * If Sinai memory key optimization is being used, then only
115 * the 8-bit key portion will change. For other HCAs, the
116 * unused index bits will also be used for FMR remapping.
117 */
118 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
119 props->max_map_per_fmr = 255;
120 else
121 props->max_map_per_fmr =
122 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
123
124 err = 0;
125 out:
126 kfree(in_mad);
127 kfree(out_mad);
128 return err;
129 }
130
131 static int mthca_query_port(struct ib_device *ibdev,
132 u8 port, struct ib_port_attr *props)
133 {
134 struct ib_smp *in_mad = NULL;
135 struct ib_smp *out_mad = NULL;
136 int err = -ENOMEM;
137
138 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
139 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
140 if (!in_mad || !out_mad)
141 goto out;
142
143 memset(props, 0, sizeof *props);
144
145 init_query_mad(in_mad);
146 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
147 in_mad->attr_mod = cpu_to_be32(port);
148
149 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
150 port, NULL, NULL, in_mad, out_mad);
151 if (err)
152 goto out;
153
154 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
155 props->lmc = out_mad->data[34] & 0x7;
156 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
157 props->sm_sl = out_mad->data[36] & 0xf;
158 props->state = out_mad->data[32] & 0xf;
159 props->phys_state = out_mad->data[33] >> 4;
160 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
161 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
162 props->max_msg_sz = 0x80000000;
163 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
164 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
165 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
166 props->active_width = out_mad->data[31] & 0xf;
167 props->active_speed = out_mad->data[35] >> 4;
168 props->max_mtu = out_mad->data[41] & 0xf;
169 props->active_mtu = out_mad->data[36] >> 4;
170 props->subnet_timeout = out_mad->data[51] & 0x1f;
171 props->max_vl_num = out_mad->data[37] >> 4;
172 props->init_type_reply = out_mad->data[41] >> 4;
173
174 out:
175 kfree(in_mad);
176 kfree(out_mad);
177 return err;
178 }
179
180 static int mthca_modify_device(struct ib_device *ibdev,
181 int mask,
182 struct ib_device_modify *props)
183 {
184 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
185 return -EOPNOTSUPP;
186
187 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
188 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
189 return -ERESTARTSYS;
190 memcpy(ibdev->node_desc, props->node_desc, 64);
191 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
192 }
193
194 return 0;
195 }
196
197 static int mthca_modify_port(struct ib_device *ibdev,
198 u8 port, int port_modify_mask,
199 struct ib_port_modify *props)
200 {
201 struct mthca_set_ib_param set_ib;
202 struct ib_port_attr attr;
203 int err;
204
205 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
206 return -ERESTARTSYS;
207
208 err = mthca_query_port(ibdev, port, &attr);
209 if (err)
210 goto out;
211
212 set_ib.set_si_guid = 0;
213 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
214
215 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
216 ~props->clr_port_cap_mask;
217
218 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
219 if (err)
220 goto out;
221 out:
222 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
223 return err;
224 }
225
226 static int mthca_query_pkey(struct ib_device *ibdev,
227 u8 port, u16 index, u16 *pkey)
228 {
229 struct ib_smp *in_mad = NULL;
230 struct ib_smp *out_mad = NULL;
231 int err = -ENOMEM;
232
233 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
234 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
235 if (!in_mad || !out_mad)
236 goto out;
237
238 init_query_mad(in_mad);
239 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
240 in_mad->attr_mod = cpu_to_be32(index / 32);
241
242 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
243 port, NULL, NULL, in_mad, out_mad);
244 if (err)
245 goto out;
246
247 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
248
249 out:
250 kfree(in_mad);
251 kfree(out_mad);
252 return err;
253 }
254
255 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
256 int index, union ib_gid *gid)
257 {
258 struct ib_smp *in_mad = NULL;
259 struct ib_smp *out_mad = NULL;
260 int err = -ENOMEM;
261
262 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
263 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
264 if (!in_mad || !out_mad)
265 goto out;
266
267 init_query_mad(in_mad);
268 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
269 in_mad->attr_mod = cpu_to_be32(port);
270
271 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
272 port, NULL, NULL, in_mad, out_mad);
273 if (err)
274 goto out;
275
276 memcpy(gid->raw, out_mad->data + 8, 8);
277
278 init_query_mad(in_mad);
279 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
280 in_mad->attr_mod = cpu_to_be32(index / 8);
281
282 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
283 port, NULL, NULL, in_mad, out_mad);
284 if (err)
285 goto out;
286
287 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
288
289 out:
290 kfree(in_mad);
291 kfree(out_mad);
292 return err;
293 }
294
295 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
296 struct ib_udata *udata)
297 {
298 struct mthca_alloc_ucontext_resp uresp;
299 struct mthca_ucontext *context;
300 int err;
301
302 if (!(to_mdev(ibdev)->active))
303 return ERR_PTR(-EAGAIN);
304
305 memset(&uresp, 0, sizeof uresp);
306
307 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
308 if (mthca_is_memfree(to_mdev(ibdev)))
309 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
310 else
311 uresp.uarc_size = 0;
312
313 context = kmalloc(sizeof *context, GFP_KERNEL);
314 if (!context)
315 return ERR_PTR(-ENOMEM);
316
317 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
318 if (err) {
319 kfree(context);
320 return ERR_PTR(err);
321 }
322
323 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
324 if (IS_ERR(context->db_tab)) {
325 err = PTR_ERR(context->db_tab);
326 mthca_uar_free(to_mdev(ibdev), &context->uar);
327 kfree(context);
328 return ERR_PTR(err);
329 }
330
331 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
332 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
333 mthca_uar_free(to_mdev(ibdev), &context->uar);
334 kfree(context);
335 return ERR_PTR(-EFAULT);
336 }
337
338 context->reg_mr_warned = 0;
339
340 return &context->ibucontext;
341 }
342
343 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
344 {
345 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
346 to_mucontext(context)->db_tab);
347 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
348 kfree(to_mucontext(context));
349
350 return 0;
351 }
352
353 static int mthca_mmap_uar(struct ib_ucontext *context,
354 struct vm_area_struct *vma)
355 {
356 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
357 return -EINVAL;
358
359 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
360
361 if (io_remap_pfn_range(vma, vma->vm_start,
362 to_mucontext(context)->uar.pfn,
363 PAGE_SIZE, vma->vm_page_prot))
364 return -EAGAIN;
365
366 return 0;
367 }
368
369 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
370 struct ib_ucontext *context,
371 struct ib_udata *udata)
372 {
373 struct mthca_pd *pd;
374 int err;
375
376 pd = kmalloc(sizeof *pd, GFP_KERNEL);
377 if (!pd)
378 return ERR_PTR(-ENOMEM);
379
380 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
381 if (err) {
382 kfree(pd);
383 return ERR_PTR(err);
384 }
385
386 if (context) {
387 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
388 mthca_pd_free(to_mdev(ibdev), pd);
389 kfree(pd);
390 return ERR_PTR(-EFAULT);
391 }
392 }
393
394 return &pd->ibpd;
395 }
396
397 static int mthca_dealloc_pd(struct ib_pd *pd)
398 {
399 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
400 kfree(pd);
401
402 return 0;
403 }
404
405 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
406 struct ib_ah_attr *ah_attr)
407 {
408 int err;
409 struct mthca_ah *ah;
410
411 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
412 if (!ah)
413 return ERR_PTR(-ENOMEM);
414
415 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
416 if (err) {
417 kfree(ah);
418 return ERR_PTR(err);
419 }
420
421 return &ah->ibah;
422 }
423
424 static int mthca_ah_destroy(struct ib_ah *ah)
425 {
426 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
427 kfree(ah);
428
429 return 0;
430 }
431
432 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
433 struct ib_srq_init_attr *init_attr,
434 struct ib_udata *udata)
435 {
436 struct mthca_create_srq ucmd;
437 struct mthca_ucontext *context = NULL;
438 struct mthca_srq *srq;
439 int err;
440
441 srq = kmalloc(sizeof *srq, GFP_KERNEL);
442 if (!srq)
443 return ERR_PTR(-ENOMEM);
444
445 if (pd->uobject) {
446 context = to_mucontext(pd->uobject->context);
447
448 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
449 err = -EFAULT;
450 goto err_free;
451 }
452
453 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
454 context->db_tab, ucmd.db_index,
455 ucmd.db_page);
456
457 if (err)
458 goto err_free;
459
460 srq->mr.ibmr.lkey = ucmd.lkey;
461 srq->db_index = ucmd.db_index;
462 }
463
464 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
465 &init_attr->attr, srq);
466
467 if (err && pd->uobject)
468 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
469 context->db_tab, ucmd.db_index);
470
471 if (err)
472 goto err_free;
473
474 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
475 mthca_free_srq(to_mdev(pd->device), srq);
476 err = -EFAULT;
477 goto err_free;
478 }
479
480 return &srq->ibsrq;
481
482 err_free:
483 kfree(srq);
484
485 return ERR_PTR(err);
486 }
487
488 static int mthca_destroy_srq(struct ib_srq *srq)
489 {
490 struct mthca_ucontext *context;
491
492 if (srq->uobject) {
493 context = to_mucontext(srq->uobject->context);
494
495 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
496 context->db_tab, to_msrq(srq)->db_index);
497 }
498
499 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
500 kfree(srq);
501
502 return 0;
503 }
504
505 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
506 struct ib_qp_init_attr *init_attr,
507 struct ib_udata *udata)
508 {
509 struct mthca_create_qp ucmd;
510 struct mthca_qp *qp;
511 int err;
512
513 if (init_attr->create_flags)
514 return ERR_PTR(-EINVAL);
515
516 switch (init_attr->qp_type) {
517 case IB_QPT_RC:
518 case IB_QPT_UC:
519 case IB_QPT_UD:
520 {
521 struct mthca_ucontext *context;
522
523 qp = kmalloc(sizeof *qp, GFP_KERNEL);
524 if (!qp)
525 return ERR_PTR(-ENOMEM);
526
527 if (pd->uobject) {
528 context = to_mucontext(pd->uobject->context);
529
530 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
531 kfree(qp);
532 return ERR_PTR(-EFAULT);
533 }
534
535 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
536 context->db_tab,
537 ucmd.sq_db_index, ucmd.sq_db_page);
538 if (err) {
539 kfree(qp);
540 return ERR_PTR(err);
541 }
542
543 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
544 context->db_tab,
545 ucmd.rq_db_index, ucmd.rq_db_page);
546 if (err) {
547 mthca_unmap_user_db(to_mdev(pd->device),
548 &context->uar,
549 context->db_tab,
550 ucmd.sq_db_index);
551 kfree(qp);
552 return ERR_PTR(err);
553 }
554
555 qp->mr.ibmr.lkey = ucmd.lkey;
556 qp->sq.db_index = ucmd.sq_db_index;
557 qp->rq.db_index = ucmd.rq_db_index;
558 }
559
560 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
561 to_mcq(init_attr->send_cq),
562 to_mcq(init_attr->recv_cq),
563 init_attr->qp_type, init_attr->sq_sig_type,
564 &init_attr->cap, qp);
565
566 if (err && pd->uobject) {
567 context = to_mucontext(pd->uobject->context);
568
569 mthca_unmap_user_db(to_mdev(pd->device),
570 &context->uar,
571 context->db_tab,
572 ucmd.sq_db_index);
573 mthca_unmap_user_db(to_mdev(pd->device),
574 &context->uar,
575 context->db_tab,
576 ucmd.rq_db_index);
577 }
578
579 qp->ibqp.qp_num = qp->qpn;
580 break;
581 }
582 case IB_QPT_SMI:
583 case IB_QPT_GSI:
584 {
585 /* Don't allow userspace to create special QPs */
586 if (pd->uobject)
587 return ERR_PTR(-EINVAL);
588
589 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
590 if (!qp)
591 return ERR_PTR(-ENOMEM);
592
593 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
594
595 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
596 to_mcq(init_attr->send_cq),
597 to_mcq(init_attr->recv_cq),
598 init_attr->sq_sig_type, &init_attr->cap,
599 qp->ibqp.qp_num, init_attr->port_num,
600 to_msqp(qp));
601 break;
602 }
603 default:
604 /* Don't support raw QPs */
605 return ERR_PTR(-ENOSYS);
606 }
607
608 if (err) {
609 kfree(qp);
610 return ERR_PTR(err);
611 }
612
613 init_attr->cap.max_send_wr = qp->sq.max;
614 init_attr->cap.max_recv_wr = qp->rq.max;
615 init_attr->cap.max_send_sge = qp->sq.max_gs;
616 init_attr->cap.max_recv_sge = qp->rq.max_gs;
617 init_attr->cap.max_inline_data = qp->max_inline_data;
618
619 return &qp->ibqp;
620 }
621
622 static int mthca_destroy_qp(struct ib_qp *qp)
623 {
624 if (qp->uobject) {
625 mthca_unmap_user_db(to_mdev(qp->device),
626 &to_mucontext(qp->uobject->context)->uar,
627 to_mucontext(qp->uobject->context)->db_tab,
628 to_mqp(qp)->sq.db_index);
629 mthca_unmap_user_db(to_mdev(qp->device),
630 &to_mucontext(qp->uobject->context)->uar,
631 to_mucontext(qp->uobject->context)->db_tab,
632 to_mqp(qp)->rq.db_index);
633 }
634 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
635 kfree(qp);
636 return 0;
637 }
638
639 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
640 int comp_vector,
641 struct ib_ucontext *context,
642 struct ib_udata *udata)
643 {
644 struct mthca_create_cq ucmd;
645 struct mthca_cq *cq;
646 int nent;
647 int err;
648
649 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
650 return ERR_PTR(-EINVAL);
651
652 if (context) {
653 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
654 return ERR_PTR(-EFAULT);
655
656 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
657 to_mucontext(context)->db_tab,
658 ucmd.set_db_index, ucmd.set_db_page);
659 if (err)
660 return ERR_PTR(err);
661
662 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
663 to_mucontext(context)->db_tab,
664 ucmd.arm_db_index, ucmd.arm_db_page);
665 if (err)
666 goto err_unmap_set;
667 }
668
669 cq = kmalloc(sizeof *cq, GFP_KERNEL);
670 if (!cq) {
671 err = -ENOMEM;
672 goto err_unmap_arm;
673 }
674
675 if (context) {
676 cq->buf.mr.ibmr.lkey = ucmd.lkey;
677 cq->set_ci_db_index = ucmd.set_db_index;
678 cq->arm_db_index = ucmd.arm_db_index;
679 }
680
681 for (nent = 1; nent <= entries; nent <<= 1)
682 ; /* nothing */
683
684 err = mthca_init_cq(to_mdev(ibdev), nent,
685 context ? to_mucontext(context) : NULL,
686 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
687 cq);
688 if (err)
689 goto err_free;
690
691 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
692 mthca_free_cq(to_mdev(ibdev), cq);
693 goto err_free;
694 }
695
696 cq->resize_buf = NULL;
697
698 return &cq->ibcq;
699
700 err_free:
701 kfree(cq);
702
703 err_unmap_arm:
704 if (context)
705 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
706 to_mucontext(context)->db_tab, ucmd.arm_db_index);
707
708 err_unmap_set:
709 if (context)
710 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
711 to_mucontext(context)->db_tab, ucmd.set_db_index);
712
713 return ERR_PTR(err);
714 }
715
716 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
717 int entries)
718 {
719 int ret;
720
721 spin_lock_irq(&cq->lock);
722 if (cq->resize_buf) {
723 ret = -EBUSY;
724 goto unlock;
725 }
726
727 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
728 if (!cq->resize_buf) {
729 ret = -ENOMEM;
730 goto unlock;
731 }
732
733 cq->resize_buf->state = CQ_RESIZE_ALLOC;
734
735 ret = 0;
736
737 unlock:
738 spin_unlock_irq(&cq->lock);
739
740 if (ret)
741 return ret;
742
743 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
744 if (ret) {
745 spin_lock_irq(&cq->lock);
746 kfree(cq->resize_buf);
747 cq->resize_buf = NULL;
748 spin_unlock_irq(&cq->lock);
749 return ret;
750 }
751
752 cq->resize_buf->cqe = entries - 1;
753
754 spin_lock_irq(&cq->lock);
755 cq->resize_buf->state = CQ_RESIZE_READY;
756 spin_unlock_irq(&cq->lock);
757
758 return 0;
759 }
760
761 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
762 {
763 struct mthca_dev *dev = to_mdev(ibcq->device);
764 struct mthca_cq *cq = to_mcq(ibcq);
765 struct mthca_resize_cq ucmd;
766 u32 lkey;
767 int ret;
768
769 if (entries < 1 || entries > dev->limits.max_cqes)
770 return -EINVAL;
771
772 mutex_lock(&cq->mutex);
773
774 entries = roundup_pow_of_two(entries + 1);
775 if (entries == ibcq->cqe + 1) {
776 ret = 0;
777 goto out;
778 }
779
780 if (cq->is_kernel) {
781 ret = mthca_alloc_resize_buf(dev, cq, entries);
782 if (ret)
783 goto out;
784 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
785 } else {
786 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
787 ret = -EFAULT;
788 goto out;
789 }
790 lkey = ucmd.lkey;
791 }
792
793 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
794
795 if (ret) {
796 if (cq->resize_buf) {
797 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
798 cq->resize_buf->cqe);
799 kfree(cq->resize_buf);
800 spin_lock_irq(&cq->lock);
801 cq->resize_buf = NULL;
802 spin_unlock_irq(&cq->lock);
803 }
804 goto out;
805 }
806
807 if (cq->is_kernel) {
808 struct mthca_cq_buf tbuf;
809 int tcqe;
810
811 spin_lock_irq(&cq->lock);
812 if (cq->resize_buf->state == CQ_RESIZE_READY) {
813 mthca_cq_resize_copy_cqes(cq);
814 tbuf = cq->buf;
815 tcqe = cq->ibcq.cqe;
816 cq->buf = cq->resize_buf->buf;
817 cq->ibcq.cqe = cq->resize_buf->cqe;
818 } else {
819 tbuf = cq->resize_buf->buf;
820 tcqe = cq->resize_buf->cqe;
821 }
822
823 kfree(cq->resize_buf);
824 cq->resize_buf = NULL;
825 spin_unlock_irq(&cq->lock);
826
827 mthca_free_cq_buf(dev, &tbuf, tcqe);
828 } else
829 ibcq->cqe = entries - 1;
830
831 out:
832 mutex_unlock(&cq->mutex);
833
834 return ret;
835 }
836
837 static int mthca_destroy_cq(struct ib_cq *cq)
838 {
839 if (cq->uobject) {
840 mthca_unmap_user_db(to_mdev(cq->device),
841 &to_mucontext(cq->uobject->context)->uar,
842 to_mucontext(cq->uobject->context)->db_tab,
843 to_mcq(cq)->arm_db_index);
844 mthca_unmap_user_db(to_mdev(cq->device),
845 &to_mucontext(cq->uobject->context)->uar,
846 to_mucontext(cq->uobject->context)->db_tab,
847 to_mcq(cq)->set_ci_db_index);
848 }
849 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
850 kfree(cq);
851
852 return 0;
853 }
854
855 static inline u32 convert_access(int acc)
856 {
857 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
858 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
859 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
860 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
861 MTHCA_MPT_FLAG_LOCAL_READ;
862 }
863
864 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
865 {
866 struct mthca_mr *mr;
867 int err;
868
869 mr = kmalloc(sizeof *mr, GFP_KERNEL);
870 if (!mr)
871 return ERR_PTR(-ENOMEM);
872
873 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
874 to_mpd(pd)->pd_num,
875 convert_access(acc), mr);
876
877 if (err) {
878 kfree(mr);
879 return ERR_PTR(err);
880 }
881
882 mr->umem = NULL;
883
884 return &mr->ibmr;
885 }
886
887 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
888 struct ib_phys_buf *buffer_list,
889 int num_phys_buf,
890 int acc,
891 u64 *iova_start)
892 {
893 struct mthca_mr *mr;
894 u64 *page_list;
895 u64 total_size;
896 unsigned long mask;
897 int shift;
898 int npages;
899 int err;
900 int i, j, n;
901
902 mask = buffer_list[0].addr ^ *iova_start;
903 total_size = 0;
904 for (i = 0; i < num_phys_buf; ++i) {
905 if (i != 0)
906 mask |= buffer_list[i].addr;
907 if (i != num_phys_buf - 1)
908 mask |= buffer_list[i].addr + buffer_list[i].size;
909
910 total_size += buffer_list[i].size;
911 }
912
913 if (mask & ~PAGE_MASK)
914 return ERR_PTR(-EINVAL);
915
916 shift = __ffs(mask | 1 << 31);
917
918 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
919 buffer_list[0].addr &= ~0ull << shift;
920
921 mr = kmalloc(sizeof *mr, GFP_KERNEL);
922 if (!mr)
923 return ERR_PTR(-ENOMEM);
924
925 npages = 0;
926 for (i = 0; i < num_phys_buf; ++i)
927 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
928
929 if (!npages)
930 return &mr->ibmr;
931
932 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
933 if (!page_list) {
934 kfree(mr);
935 return ERR_PTR(-ENOMEM);
936 }
937
938 n = 0;
939 for (i = 0; i < num_phys_buf; ++i)
940 for (j = 0;
941 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
942 ++j)
943 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
944
945 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
946 "in PD %x; shift %d, npages %d.\n",
947 (unsigned long long) buffer_list[0].addr,
948 (unsigned long long) *iova_start,
949 to_mpd(pd)->pd_num,
950 shift, npages);
951
952 err = mthca_mr_alloc_phys(to_mdev(pd->device),
953 to_mpd(pd)->pd_num,
954 page_list, shift, npages,
955 *iova_start, total_size,
956 convert_access(acc), mr);
957
958 if (err) {
959 kfree(page_list);
960 kfree(mr);
961 return ERR_PTR(err);
962 }
963
964 kfree(page_list);
965 mr->umem = NULL;
966
967 return &mr->ibmr;
968 }
969
970 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
971 u64 virt, int acc, struct ib_udata *udata)
972 {
973 struct mthca_dev *dev = to_mdev(pd->device);
974 struct ib_umem_chunk *chunk;
975 struct mthca_mr *mr;
976 struct mthca_reg_mr ucmd;
977 u64 *pages;
978 int shift, n, len;
979 int i, j, k;
980 int err = 0;
981 int write_mtt_size;
982
983 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
984 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
985 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
986 current->comm);
987 mthca_warn(dev, " Update libmthca to fix this.\n");
988 }
989 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
990 ucmd.mr_attrs = 0;
991 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
992 return ERR_PTR(-EFAULT);
993
994 mr = kmalloc(sizeof *mr, GFP_KERNEL);
995 if (!mr)
996 return ERR_PTR(-ENOMEM);
997
998 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
999 ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1000
1001 if (IS_ERR(mr->umem)) {
1002 err = PTR_ERR(mr->umem);
1003 goto err;
1004 }
1005
1006 shift = ffs(mr->umem->page_size) - 1;
1007
1008 n = 0;
1009 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1010 n += chunk->nents;
1011
1012 mr->mtt = mthca_alloc_mtt(dev, n);
1013 if (IS_ERR(mr->mtt)) {
1014 err = PTR_ERR(mr->mtt);
1015 goto err_umem;
1016 }
1017
1018 pages = (u64 *) __get_free_page(GFP_KERNEL);
1019 if (!pages) {
1020 err = -ENOMEM;
1021 goto err_mtt;
1022 }
1023
1024 i = n = 0;
1025
1026 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1027
1028 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1029 for (j = 0; j < chunk->nmap; ++j) {
1030 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1031 for (k = 0; k < len; ++k) {
1032 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1033 mr->umem->page_size * k;
1034 /*
1035 * Be friendly to write_mtt and pass it chunks
1036 * of appropriate size.
1037 */
1038 if (i == write_mtt_size) {
1039 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1040 if (err)
1041 goto mtt_done;
1042 n += i;
1043 i = 0;
1044 }
1045 }
1046 }
1047
1048 if (i)
1049 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1050 mtt_done:
1051 free_page((unsigned long) pages);
1052 if (err)
1053 goto err_mtt;
1054
1055 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1056 convert_access(acc), mr);
1057
1058 if (err)
1059 goto err_mtt;
1060
1061 return &mr->ibmr;
1062
1063 err_mtt:
1064 mthca_free_mtt(dev, mr->mtt);
1065
1066 err_umem:
1067 ib_umem_release(mr->umem);
1068
1069 err:
1070 kfree(mr);
1071 return ERR_PTR(err);
1072 }
1073
1074 static int mthca_dereg_mr(struct ib_mr *mr)
1075 {
1076 struct mthca_mr *mmr = to_mmr(mr);
1077
1078 mthca_free_mr(to_mdev(mr->device), mmr);
1079 if (mmr->umem)
1080 ib_umem_release(mmr->umem);
1081 kfree(mmr);
1082
1083 return 0;
1084 }
1085
1086 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1087 struct ib_fmr_attr *fmr_attr)
1088 {
1089 struct mthca_fmr *fmr;
1090 int err;
1091
1092 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1093 if (!fmr)
1094 return ERR_PTR(-ENOMEM);
1095
1096 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1097 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1098 convert_access(mr_access_flags), fmr);
1099
1100 if (err) {
1101 kfree(fmr);
1102 return ERR_PTR(err);
1103 }
1104
1105 return &fmr->ibmr;
1106 }
1107
1108 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1109 {
1110 struct mthca_fmr *mfmr = to_mfmr(fmr);
1111 int err;
1112
1113 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1114 if (err)
1115 return err;
1116
1117 kfree(mfmr);
1118 return 0;
1119 }
1120
1121 static int mthca_unmap_fmr(struct list_head *fmr_list)
1122 {
1123 struct ib_fmr *fmr;
1124 int err;
1125 struct mthca_dev *mdev = NULL;
1126
1127 list_for_each_entry(fmr, fmr_list, list) {
1128 if (mdev && to_mdev(fmr->device) != mdev)
1129 return -EINVAL;
1130 mdev = to_mdev(fmr->device);
1131 }
1132
1133 if (!mdev)
1134 return 0;
1135
1136 if (mthca_is_memfree(mdev)) {
1137 list_for_each_entry(fmr, fmr_list, list)
1138 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1139
1140 wmb();
1141 } else
1142 list_for_each_entry(fmr, fmr_list, list)
1143 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1144
1145 err = mthca_SYNC_TPT(mdev);
1146 return err;
1147 }
1148
1149 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1150 char *buf)
1151 {
1152 struct mthca_dev *dev =
1153 container_of(device, struct mthca_dev, ib_dev.dev);
1154 return sprintf(buf, "%x\n", dev->rev_id);
1155 }
1156
1157 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1158 char *buf)
1159 {
1160 struct mthca_dev *dev =
1161 container_of(device, struct mthca_dev, ib_dev.dev);
1162 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1163 (int) (dev->fw_ver >> 16) & 0xffff,
1164 (int) dev->fw_ver & 0xffff);
1165 }
1166
1167 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1168 char *buf)
1169 {
1170 struct mthca_dev *dev =
1171 container_of(device, struct mthca_dev, ib_dev.dev);
1172 switch (dev->pdev->device) {
1173 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1174 return sprintf(buf, "MT23108\n");
1175 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1176 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1177 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1178 return sprintf(buf, "MT25208\n");
1179 case PCI_DEVICE_ID_MELLANOX_SINAI:
1180 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1181 return sprintf(buf, "MT25204\n");
1182 default:
1183 return sprintf(buf, "unknown\n");
1184 }
1185 }
1186
1187 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1188 char *buf)
1189 {
1190 struct mthca_dev *dev =
1191 container_of(device, struct mthca_dev, ib_dev.dev);
1192 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1193 }
1194
1195 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1196 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1197 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1198 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1199
1200 static struct device_attribute *mthca_dev_attributes[] = {
1201 &dev_attr_hw_rev,
1202 &dev_attr_fw_ver,
1203 &dev_attr_hca_type,
1204 &dev_attr_board_id
1205 };
1206
1207 static int mthca_init_node_data(struct mthca_dev *dev)
1208 {
1209 struct ib_smp *in_mad = NULL;
1210 struct ib_smp *out_mad = NULL;
1211 int err = -ENOMEM;
1212
1213 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1214 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1215 if (!in_mad || !out_mad)
1216 goto out;
1217
1218 init_query_mad(in_mad);
1219 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1220
1221 err = mthca_MAD_IFC(dev, 1, 1,
1222 1, NULL, NULL, in_mad, out_mad);
1223 if (err)
1224 goto out;
1225
1226 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1227
1228 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1229
1230 err = mthca_MAD_IFC(dev, 1, 1,
1231 1, NULL, NULL, in_mad, out_mad);
1232 if (err)
1233 goto out;
1234
1235 if (mthca_is_memfree(dev))
1236 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1237 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1238
1239 out:
1240 kfree(in_mad);
1241 kfree(out_mad);
1242 return err;
1243 }
1244
1245 int mthca_register_device(struct mthca_dev *dev)
1246 {
1247 int ret;
1248 int i;
1249
1250 ret = mthca_init_node_data(dev);
1251 if (ret)
1252 return ret;
1253
1254 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1255 dev->ib_dev.owner = THIS_MODULE;
1256
1257 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1258 dev->ib_dev.uverbs_cmd_mask =
1259 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1260 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1261 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1262 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1263 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1264 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1265 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1266 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1267 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1268 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1269 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1270 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1271 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1272 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1273 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1274 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1275 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1276 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1277 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1278 dev->ib_dev.num_comp_vectors = 1;
1279 dev->ib_dev.dma_device = &dev->pdev->dev;
1280 dev->ib_dev.query_device = mthca_query_device;
1281 dev->ib_dev.query_port = mthca_query_port;
1282 dev->ib_dev.modify_device = mthca_modify_device;
1283 dev->ib_dev.modify_port = mthca_modify_port;
1284 dev->ib_dev.query_pkey = mthca_query_pkey;
1285 dev->ib_dev.query_gid = mthca_query_gid;
1286 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1287 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1288 dev->ib_dev.mmap = mthca_mmap_uar;
1289 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1290 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1291 dev->ib_dev.create_ah = mthca_ah_create;
1292 dev->ib_dev.query_ah = mthca_ah_query;
1293 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1294
1295 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1296 dev->ib_dev.create_srq = mthca_create_srq;
1297 dev->ib_dev.modify_srq = mthca_modify_srq;
1298 dev->ib_dev.query_srq = mthca_query_srq;
1299 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1300 dev->ib_dev.uverbs_cmd_mask |=
1301 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1302 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1303 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1304 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1305
1306 if (mthca_is_memfree(dev))
1307 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1308 else
1309 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1310 }
1311
1312 dev->ib_dev.create_qp = mthca_create_qp;
1313 dev->ib_dev.modify_qp = mthca_modify_qp;
1314 dev->ib_dev.query_qp = mthca_query_qp;
1315 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1316 dev->ib_dev.create_cq = mthca_create_cq;
1317 dev->ib_dev.resize_cq = mthca_resize_cq;
1318 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1319 dev->ib_dev.poll_cq = mthca_poll_cq;
1320 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1321 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1322 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1323 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1324
1325 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1326 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1327 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1328 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1329 if (mthca_is_memfree(dev))
1330 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1331 else
1332 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1333 }
1334
1335 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1336 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1337 dev->ib_dev.process_mad = mthca_process_mad;
1338
1339 if (mthca_is_memfree(dev)) {
1340 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1341 dev->ib_dev.post_send = mthca_arbel_post_send;
1342 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1343 } else {
1344 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1345 dev->ib_dev.post_send = mthca_tavor_post_send;
1346 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1347 }
1348
1349 mutex_init(&dev->cap_mask_mutex);
1350
1351 ret = ib_register_device(&dev->ib_dev, NULL);
1352 if (ret)
1353 return ret;
1354
1355 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1356 ret = device_create_file(&dev->ib_dev.dev,
1357 mthca_dev_attributes[i]);
1358 if (ret) {
1359 ib_unregister_device(&dev->ib_dev);
1360 return ret;
1361 }
1362 }
1363
1364 mthca_start_catas_poll(dev);
1365
1366 return 0;
1367 }
1368
1369 void mthca_unregister_device(struct mthca_dev *dev)
1370 {
1371 mthca_stop_catas_poll(dev);
1372 ib_unregister_device(&dev->ib_dev);
1373 }
Linux Btrfs Development