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KVM: s390: arch backend for the kvm kernel module
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / infiniband / hw / mthca / mthca_provider.c
blob696e1f30233268a6f69261ca10dd4fb0beadef28
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 * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
37 */
38
39 #include <rdma/ib_smi.h>
40 #include <rdma/ib_umem.h>
41 #include <rdma/ib_user_verbs.h>
42 #include <linux/mm.h>
43
44 #include "mthca_dev.h"
45 #include "mthca_cmd.h"
46 #include "mthca_user.h"
47 #include "mthca_memfree.h"
48
49 static void init_query_mad(struct ib_smp *mad)
50 {
51 mad->base_version = 1;
52 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
53 mad->class_version = 1;
54 mad->method = IB_MGMT_METHOD_GET;
55 }
56
57 static int mthca_query_device(struct ib_device *ibdev,
58 struct ib_device_attr *props)
59 {
60 struct ib_smp *in_mad = NULL;
61 struct ib_smp *out_mad = NULL;
62 int err = -ENOMEM;
63 struct mthca_dev *mdev = to_mdev(ibdev);
64
65 u8 status;
66
67 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
68 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
69 if (!in_mad || !out_mad)
70 goto out;
71
72 memset(props, 0, sizeof *props);
73
74 props->fw_ver = mdev->fw_ver;
75
76 init_query_mad(in_mad);
77 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
78
79 err = mthca_MAD_IFC(mdev, 1, 1,
80 1, NULL, NULL, in_mad, out_mad,
81 &status);
82 if (err)
83 goto out;
84 if (status) {
85 err = -EINVAL;
86 goto out;
87 }
88
89 props->device_cap_flags = mdev->device_cap_flags;
90 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
91 0xffffff;
92 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
93 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
94 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
95
96 props->max_mr_size = ~0ull;
97 props->page_size_cap = mdev->limits.page_size_cap;
98 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
99 props->max_qp_wr = mdev->limits.max_wqes;
100 props->max_sge = mdev->limits.max_sg;
101 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
102 props->max_cqe = mdev->limits.max_cqes;
103 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
104 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
105 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
106 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
107 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
108 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
109 props->max_srq_wr = mdev->limits.max_srq_wqes;
110 props->max_srq_sge = mdev->limits.max_srq_sge;
111 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
112 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
113 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
114 props->max_pkeys = mdev->limits.pkey_table_len;
115 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
116 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
117 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
118 props->max_mcast_grp;
119 /*
120 * If Sinai memory key optimization is being used, then only
121 * the 8-bit key portion will change. For other HCAs, the
122 * unused index bits will also be used for FMR remapping.
123 */
124 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
125 props->max_map_per_fmr = 255;
126 else
127 props->max_map_per_fmr =
128 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
129
130 err = 0;
131 out:
132 kfree(in_mad);
133 kfree(out_mad);
134 return err;
135 }
136
137 static int mthca_query_port(struct ib_device *ibdev,
138 u8 port, struct ib_port_attr *props)
139 {
140 struct ib_smp *in_mad = NULL;
141 struct ib_smp *out_mad = NULL;
142 int err = -ENOMEM;
143 u8 status;
144
145 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
146 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
147 if (!in_mad || !out_mad)
148 goto out;
149
150 memset(props, 0, sizeof *props);
151
152 init_query_mad(in_mad);
153 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
154 in_mad->attr_mod = cpu_to_be32(port);
155
156 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
157 port, NULL, NULL, in_mad, out_mad,
158 &status);
159 if (err)
160 goto out;
161 if (status) {
162 err = -EINVAL;
163 goto out;
164 }
165
166 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
167 props->lmc = out_mad->data[34] & 0x7;
168 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
169 props->sm_sl = out_mad->data[36] & 0xf;
170 props->state = out_mad->data[32] & 0xf;
171 props->phys_state = out_mad->data[33] >> 4;
172 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
173 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
174 props->max_msg_sz = 0x80000000;
175 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
176 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
177 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
178 props->active_width = out_mad->data[31] & 0xf;
179 props->active_speed = out_mad->data[35] >> 4;
180 props->max_mtu = out_mad->data[41] & 0xf;
181 props->active_mtu = out_mad->data[36] >> 4;
182 props->subnet_timeout = out_mad->data[51] & 0x1f;
183 props->max_vl_num = out_mad->data[37] >> 4;
184 props->init_type_reply = out_mad->data[41] >> 4;
185
186 out:
187 kfree(in_mad);
188 kfree(out_mad);
189 return err;
190 }
191
192 static int mthca_modify_device(struct ib_device *ibdev,
193 int mask,
194 struct ib_device_modify *props)
195 {
196 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
197 return -EOPNOTSUPP;
198
199 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
200 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
201 return -ERESTARTSYS;
202 memcpy(ibdev->node_desc, props->node_desc, 64);
203 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
204 }
205
206 return 0;
207 }
208
209 static int mthca_modify_port(struct ib_device *ibdev,
210 u8 port, int port_modify_mask,
211 struct ib_port_modify *props)
212 {
213 struct mthca_set_ib_param set_ib;
214 struct ib_port_attr attr;
215 int err;
216 u8 status;
217
218 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
219 return -ERESTARTSYS;
220
221 err = mthca_query_port(ibdev, port, &attr);
222 if (err)
223 goto out;
224
225 set_ib.set_si_guid = 0;
226 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
227
228 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
229 ~props->clr_port_cap_mask;
230
231 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
232 if (err)
233 goto out;
234 if (status) {
235 err = -EINVAL;
236 goto out;
237 }
238
239 out:
240 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
241 return err;
242 }
243
244 static int mthca_query_pkey(struct ib_device *ibdev,
245 u8 port, u16 index, u16 *pkey)
246 {
247 struct ib_smp *in_mad = NULL;
248 struct ib_smp *out_mad = NULL;
249 int err = -ENOMEM;
250 u8 status;
251
252 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
253 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
254 if (!in_mad || !out_mad)
255 goto out;
256
257 init_query_mad(in_mad);
258 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
259 in_mad->attr_mod = cpu_to_be32(index / 32);
260
261 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
262 port, NULL, NULL, in_mad, out_mad,
263 &status);
264 if (err)
265 goto out;
266 if (status) {
267 err = -EINVAL;
268 goto out;
269 }
270
271 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
272
273 out:
274 kfree(in_mad);
275 kfree(out_mad);
276 return err;
277 }
278
279 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
280 int index, union ib_gid *gid)
281 {
282 struct ib_smp *in_mad = NULL;
283 struct ib_smp *out_mad = NULL;
284 int err = -ENOMEM;
285 u8 status;
286
287 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
288 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
289 if (!in_mad || !out_mad)
290 goto out;
291
292 init_query_mad(in_mad);
293 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
294 in_mad->attr_mod = cpu_to_be32(port);
295
296 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
297 port, NULL, NULL, in_mad, out_mad,
298 &status);
299 if (err)
300 goto out;
301 if (status) {
302 err = -EINVAL;
303 goto out;
304 }
305
306 memcpy(gid->raw, out_mad->data + 8, 8);
307
308 init_query_mad(in_mad);
309 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
310 in_mad->attr_mod = cpu_to_be32(index / 8);
311
312 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
313 port, NULL, NULL, in_mad, out_mad,
314 &status);
315 if (err)
316 goto out;
317 if (status) {
318 err = -EINVAL;
319 goto out;
320 }
321
322 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
323
324 out:
325 kfree(in_mad);
326 kfree(out_mad);
327 return err;
328 }
329
330 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
331 struct ib_udata *udata)
332 {
333 struct mthca_alloc_ucontext_resp uresp;
334 struct mthca_ucontext *context;
335 int err;
336
337 memset(&uresp, 0, sizeof uresp);
338
339 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
340 if (mthca_is_memfree(to_mdev(ibdev)))
341 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
342 else
343 uresp.uarc_size = 0;
344
345 context = kmalloc(sizeof *context, GFP_KERNEL);
346 if (!context)
347 return ERR_PTR(-ENOMEM);
348
349 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
350 if (err) {
351 kfree(context);
352 return ERR_PTR(err);
353 }
354
355 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
356 if (IS_ERR(context->db_tab)) {
357 err = PTR_ERR(context->db_tab);
358 mthca_uar_free(to_mdev(ibdev), &context->uar);
359 kfree(context);
360 return ERR_PTR(err);
361 }
362
363 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
364 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
365 mthca_uar_free(to_mdev(ibdev), &context->uar);
366 kfree(context);
367 return ERR_PTR(-EFAULT);
368 }
369
370 return &context->ibucontext;
371 }
372
373 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
374 {
375 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
376 to_mucontext(context)->db_tab);
377 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
378 kfree(to_mucontext(context));
379
380 return 0;
381 }
382
383 static int mthca_mmap_uar(struct ib_ucontext *context,
384 struct vm_area_struct *vma)
385 {
386 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
387 return -EINVAL;
388
389 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
390
391 if (io_remap_pfn_range(vma, vma->vm_start,
392 to_mucontext(context)->uar.pfn,
393 PAGE_SIZE, vma->vm_page_prot))
394 return -EAGAIN;
395
396 return 0;
397 }
398
399 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
400 struct ib_ucontext *context,
401 struct ib_udata *udata)
402 {
403 struct mthca_pd *pd;
404 int err;
405
406 pd = kmalloc(sizeof *pd, GFP_KERNEL);
407 if (!pd)
408 return ERR_PTR(-ENOMEM);
409
410 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
411 if (err) {
412 kfree(pd);
413 return ERR_PTR(err);
414 }
415
416 if (context) {
417 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
418 mthca_pd_free(to_mdev(ibdev), pd);
419 kfree(pd);
420 return ERR_PTR(-EFAULT);
421 }
422 }
423
424 return &pd->ibpd;
425 }
426
427 static int mthca_dealloc_pd(struct ib_pd *pd)
428 {
429 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
430 kfree(pd);
431
432 return 0;
433 }
434
435 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
436 struct ib_ah_attr *ah_attr)
437 {
438 int err;
439 struct mthca_ah *ah;
440
441 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
442 if (!ah)
443 return ERR_PTR(-ENOMEM);
444
445 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
446 if (err) {
447 kfree(ah);
448 return ERR_PTR(err);
449 }
450
451 return &ah->ibah;
452 }
453
454 static int mthca_ah_destroy(struct ib_ah *ah)
455 {
456 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
457 kfree(ah);
458
459 return 0;
460 }
461
462 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
463 struct ib_srq_init_attr *init_attr,
464 struct ib_udata *udata)
465 {
466 struct mthca_create_srq ucmd;
467 struct mthca_ucontext *context = NULL;
468 struct mthca_srq *srq;
469 int err;
470
471 srq = kmalloc(sizeof *srq, GFP_KERNEL);
472 if (!srq)
473 return ERR_PTR(-ENOMEM);
474
475 if (pd->uobject) {
476 context = to_mucontext(pd->uobject->context);
477
478 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
479 err = -EFAULT;
480 goto err_free;
481 }
482
483 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
484 context->db_tab, ucmd.db_index,
485 ucmd.db_page);
486
487 if (err)
488 goto err_free;
489
490 srq->mr.ibmr.lkey = ucmd.lkey;
491 srq->db_index = ucmd.db_index;
492 }
493
494 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
495 &init_attr->attr, srq);
496
497 if (err && pd->uobject)
498 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
499 context->db_tab, ucmd.db_index);
500
501 if (err)
502 goto err_free;
503
504 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
505 mthca_free_srq(to_mdev(pd->device), srq);
506 err = -EFAULT;
507 goto err_free;
508 }
509
510 return &srq->ibsrq;
511
512 err_free:
513 kfree(srq);
514
515 return ERR_PTR(err);
516 }
517
518 static int mthca_destroy_srq(struct ib_srq *srq)
519 {
520 struct mthca_ucontext *context;
521
522 if (srq->uobject) {
523 context = to_mucontext(srq->uobject->context);
524
525 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
526 context->db_tab, to_msrq(srq)->db_index);
527 }
528
529 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
530 kfree(srq);
531
532 return 0;
533 }
534
535 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
536 struct ib_qp_init_attr *init_attr,
537 struct ib_udata *udata)
538 {
539 struct mthca_create_qp ucmd;
540 struct mthca_qp *qp;
541 int err;
542
543 if (init_attr->create_flags)
544 return ERR_PTR(-EINVAL);
545
546 switch (init_attr->qp_type) {
547 case IB_QPT_RC:
548 case IB_QPT_UC:
549 case IB_QPT_UD:
550 {
551 struct mthca_ucontext *context;
552
553 qp = kmalloc(sizeof *qp, GFP_KERNEL);
554 if (!qp)
555 return ERR_PTR(-ENOMEM);
556
557 if (pd->uobject) {
558 context = to_mucontext(pd->uobject->context);
559
560 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
561 kfree(qp);
562 return ERR_PTR(-EFAULT);
563 }
564
565 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
566 context->db_tab,
567 ucmd.sq_db_index, ucmd.sq_db_page);
568 if (err) {
569 kfree(qp);
570 return ERR_PTR(err);
571 }
572
573 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
574 context->db_tab,
575 ucmd.rq_db_index, ucmd.rq_db_page);
576 if (err) {
577 mthca_unmap_user_db(to_mdev(pd->device),
578 &context->uar,
579 context->db_tab,
580 ucmd.sq_db_index);
581 kfree(qp);
582 return ERR_PTR(err);
583 }
584
585 qp->mr.ibmr.lkey = ucmd.lkey;
586 qp->sq.db_index = ucmd.sq_db_index;
587 qp->rq.db_index = ucmd.rq_db_index;
588 }
589
590 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
591 to_mcq(init_attr->send_cq),
592 to_mcq(init_attr->recv_cq),
593 init_attr->qp_type, init_attr->sq_sig_type,
594 &init_attr->cap, qp);
595
596 if (err && pd->uobject) {
597 context = to_mucontext(pd->uobject->context);
598
599 mthca_unmap_user_db(to_mdev(pd->device),
600 &context->uar,
601 context->db_tab,
602 ucmd.sq_db_index);
603 mthca_unmap_user_db(to_mdev(pd->device),
604 &context->uar,
605 context->db_tab,
606 ucmd.rq_db_index);
607 }
608
609 qp->ibqp.qp_num = qp->qpn;
610 break;
611 }
612 case IB_QPT_SMI:
613 case IB_QPT_GSI:
614 {
615 /* Don't allow userspace to create special QPs */
616 if (pd->uobject)
617 return ERR_PTR(-EINVAL);
618
619 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
620 if (!qp)
621 return ERR_PTR(-ENOMEM);
622
623 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
624
625 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
626 to_mcq(init_attr->send_cq),
627 to_mcq(init_attr->recv_cq),
628 init_attr->sq_sig_type, &init_attr->cap,
629 qp->ibqp.qp_num, init_attr->port_num,
630 to_msqp(qp));
631 break;
632 }
633 default:
634 /* Don't support raw QPs */
635 return ERR_PTR(-ENOSYS);
636 }
637
638 if (err) {
639 kfree(qp);
640 return ERR_PTR(err);
641 }
642
643 init_attr->cap.max_send_wr = qp->sq.max;
644 init_attr->cap.max_recv_wr = qp->rq.max;
645 init_attr->cap.max_send_sge = qp->sq.max_gs;
646 init_attr->cap.max_recv_sge = qp->rq.max_gs;
647 init_attr->cap.max_inline_data = qp->max_inline_data;
648
649 return &qp->ibqp;
650 }
651
652 static int mthca_destroy_qp(struct ib_qp *qp)
653 {
654 if (qp->uobject) {
655 mthca_unmap_user_db(to_mdev(qp->device),
656 &to_mucontext(qp->uobject->context)->uar,
657 to_mucontext(qp->uobject->context)->db_tab,
658 to_mqp(qp)->sq.db_index);
659 mthca_unmap_user_db(to_mdev(qp->device),
660 &to_mucontext(qp->uobject->context)->uar,
661 to_mucontext(qp->uobject->context)->db_tab,
662 to_mqp(qp)->rq.db_index);
663 }
664 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
665 kfree(qp);
666 return 0;
667 }
668
669 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
670 int comp_vector,
671 struct ib_ucontext *context,
672 struct ib_udata *udata)
673 {
674 struct mthca_create_cq ucmd;
675 struct mthca_cq *cq;
676 int nent;
677 int err;
678
679 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
680 return ERR_PTR(-EINVAL);
681
682 if (context) {
683 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
684 return ERR_PTR(-EFAULT);
685
686 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
687 to_mucontext(context)->db_tab,
688 ucmd.set_db_index, ucmd.set_db_page);
689 if (err)
690 return ERR_PTR(err);
691
692 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
693 to_mucontext(context)->db_tab,
694 ucmd.arm_db_index, ucmd.arm_db_page);
695 if (err)
696 goto err_unmap_set;
697 }
698
699 cq = kmalloc(sizeof *cq, GFP_KERNEL);
700 if (!cq) {
701 err = -ENOMEM;
702 goto err_unmap_arm;
703 }
704
705 if (context) {
706 cq->buf.mr.ibmr.lkey = ucmd.lkey;
707 cq->set_ci_db_index = ucmd.set_db_index;
708 cq->arm_db_index = ucmd.arm_db_index;
709 }
710
711 for (nent = 1; nent <= entries; nent <<= 1)
712 ; /* nothing */
713
714 err = mthca_init_cq(to_mdev(ibdev), nent,
715 context ? to_mucontext(context) : NULL,
716 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
717 cq);
718 if (err)
719 goto err_free;
720
721 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
722 mthca_free_cq(to_mdev(ibdev), cq);
723 goto err_free;
724 }
725
726 cq->resize_buf = NULL;
727
728 return &cq->ibcq;
729
730 err_free:
731 kfree(cq);
732
733 err_unmap_arm:
734 if (context)
735 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
736 to_mucontext(context)->db_tab, ucmd.arm_db_index);
737
738 err_unmap_set:
739 if (context)
740 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
741 to_mucontext(context)->db_tab, ucmd.set_db_index);
742
743 return ERR_PTR(err);
744 }
745
746 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
747 int entries)
748 {
749 int ret;
750
751 spin_lock_irq(&cq->lock);
752 if (cq->resize_buf) {
753 ret = -EBUSY;
754 goto unlock;
755 }
756
757 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
758 if (!cq->resize_buf) {
759 ret = -ENOMEM;
760 goto unlock;
761 }
762
763 cq->resize_buf->state = CQ_RESIZE_ALLOC;
764
765 ret = 0;
766
767 unlock:
768 spin_unlock_irq(&cq->lock);
769
770 if (ret)
771 return ret;
772
773 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
774 if (ret) {
775 spin_lock_irq(&cq->lock);
776 kfree(cq->resize_buf);
777 cq->resize_buf = NULL;
778 spin_unlock_irq(&cq->lock);
779 return ret;
780 }
781
782 cq->resize_buf->cqe = entries - 1;
783
784 spin_lock_irq(&cq->lock);
785 cq->resize_buf->state = CQ_RESIZE_READY;
786 spin_unlock_irq(&cq->lock);
787
788 return 0;
789 }
790
791 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
792 {
793 struct mthca_dev *dev = to_mdev(ibcq->device);
794 struct mthca_cq *cq = to_mcq(ibcq);
795 struct mthca_resize_cq ucmd;
796 u32 lkey;
797 u8 status;
798 int ret;
799
800 if (entries < 1 || entries > dev->limits.max_cqes)
801 return -EINVAL;
802
803 mutex_lock(&cq->mutex);
804
805 entries = roundup_pow_of_two(entries + 1);
806 if (entries == ibcq->cqe + 1) {
807 ret = 0;
808 goto out;
809 }
810
811 if (cq->is_kernel) {
812 ret = mthca_alloc_resize_buf(dev, cq, entries);
813 if (ret)
814 goto out;
815 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
816 } else {
817 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
818 ret = -EFAULT;
819 goto out;
820 }
821 lkey = ucmd.lkey;
822 }
823
824 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
825 if (status)
826 ret = -EINVAL;
827
828 if (ret) {
829 if (cq->resize_buf) {
830 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
831 cq->resize_buf->cqe);
832 kfree(cq->resize_buf);
833 spin_lock_irq(&cq->lock);
834 cq->resize_buf = NULL;
835 spin_unlock_irq(&cq->lock);
836 }
837 goto out;
838 }
839
840 if (cq->is_kernel) {
841 struct mthca_cq_buf tbuf;
842 int tcqe;
843
844 spin_lock_irq(&cq->lock);
845 if (cq->resize_buf->state == CQ_RESIZE_READY) {
846 mthca_cq_resize_copy_cqes(cq);
847 tbuf = cq->buf;
848 tcqe = cq->ibcq.cqe;
849 cq->buf = cq->resize_buf->buf;
850 cq->ibcq.cqe = cq->resize_buf->cqe;
851 } else {
852 tbuf = cq->resize_buf->buf;
853 tcqe = cq->resize_buf->cqe;
854 }
855
856 kfree(cq->resize_buf);
857 cq->resize_buf = NULL;
858 spin_unlock_irq(&cq->lock);
859
860 mthca_free_cq_buf(dev, &tbuf, tcqe);
861 } else
862 ibcq->cqe = entries - 1;
863
864 out:
865 mutex_unlock(&cq->mutex);
866
867 return ret;
868 }
869
870 static int mthca_destroy_cq(struct ib_cq *cq)
871 {
872 if (cq->uobject) {
873 mthca_unmap_user_db(to_mdev(cq->device),
874 &to_mucontext(cq->uobject->context)->uar,
875 to_mucontext(cq->uobject->context)->db_tab,
876 to_mcq(cq)->arm_db_index);
877 mthca_unmap_user_db(to_mdev(cq->device),
878 &to_mucontext(cq->uobject->context)->uar,
879 to_mucontext(cq->uobject->context)->db_tab,
880 to_mcq(cq)->set_ci_db_index);
881 }
882 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
883 kfree(cq);
884
885 return 0;
886 }
887
888 static inline u32 convert_access(int acc)
889 {
890 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
891 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
892 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
893 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
894 MTHCA_MPT_FLAG_LOCAL_READ;
895 }
896
897 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
898 {
899 struct mthca_mr *mr;
900 int err;
901
902 mr = kmalloc(sizeof *mr, GFP_KERNEL);
903 if (!mr)
904 return ERR_PTR(-ENOMEM);
905
906 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
907 to_mpd(pd)->pd_num,
908 convert_access(acc), mr);
909
910 if (err) {
911 kfree(mr);
912 return ERR_PTR(err);
913 }
914
915 mr->umem = NULL;
916
917 return &mr->ibmr;
918 }
919
920 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
921 struct ib_phys_buf *buffer_list,
922 int num_phys_buf,
923 int acc,
924 u64 *iova_start)
925 {
926 struct mthca_mr *mr;
927 u64 *page_list;
928 u64 total_size;
929 unsigned long mask;
930 int shift;
931 int npages;
932 int err;
933 int i, j, n;
934
935 mask = buffer_list[0].addr ^ *iova_start;
936 total_size = 0;
937 for (i = 0; i < num_phys_buf; ++i) {
938 if (i != 0)
939 mask |= buffer_list[i].addr;
940 if (i != num_phys_buf - 1)
941 mask |= buffer_list[i].addr + buffer_list[i].size;
942
943 total_size += buffer_list[i].size;
944 }
945
946 if (mask & ~PAGE_MASK)
947 return ERR_PTR(-EINVAL);
948
949 shift = __ffs(mask | 1 << 31);
950
951 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
952 buffer_list[0].addr &= ~0ull << shift;
953
954 mr = kmalloc(sizeof *mr, GFP_KERNEL);
955 if (!mr)
956 return ERR_PTR(-ENOMEM);
957
958 npages = 0;
959 for (i = 0; i < num_phys_buf; ++i)
960 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
961
962 if (!npages)
963 return &mr->ibmr;
964
965 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
966 if (!page_list) {
967 kfree(mr);
968 return ERR_PTR(-ENOMEM);
969 }
970
971 n = 0;
972 for (i = 0; i < num_phys_buf; ++i)
973 for (j = 0;
974 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
975 ++j)
976 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
977
978 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
979 "in PD %x; shift %d, npages %d.\n",
980 (unsigned long long) buffer_list[0].addr,
981 (unsigned long long) *iova_start,
982 to_mpd(pd)->pd_num,
983 shift, npages);
984
985 err = mthca_mr_alloc_phys(to_mdev(pd->device),
986 to_mpd(pd)->pd_num,
987 page_list, shift, npages,
988 *iova_start, total_size,
989 convert_access(acc), mr);
990
991 if (err) {
992 kfree(page_list);
993 kfree(mr);
994 return ERR_PTR(err);
995 }
996
997 kfree(page_list);
998 mr->umem = NULL;
999
1000 return &mr->ibmr;
1001 }
1002
1003 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1004 u64 virt, int acc, struct ib_udata *udata)
1005 {
1006 struct mthca_dev *dev = to_mdev(pd->device);
1007 struct ib_umem_chunk *chunk;
1008 struct mthca_mr *mr;
1009 u64 *pages;
1010 int shift, n, len;
1011 int i, j, k;
1012 int err = 0;
1013 int write_mtt_size;
1014
1015 mr = kmalloc(sizeof *mr, GFP_KERNEL);
1016 if (!mr)
1017 return ERR_PTR(-ENOMEM);
1018
1019 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc);
1020 if (IS_ERR(mr->umem)) {
1021 err = PTR_ERR(mr->umem);
1022 goto err;
1023 }
1024
1025 shift = ffs(mr->umem->page_size) - 1;
1026
1027 n = 0;
1028 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1029 n += chunk->nents;
1030
1031 mr->mtt = mthca_alloc_mtt(dev, n);
1032 if (IS_ERR(mr->mtt)) {
1033 err = PTR_ERR(mr->mtt);
1034 goto err_umem;
1035 }
1036
1037 pages = (u64 *) __get_free_page(GFP_KERNEL);
1038 if (!pages) {
1039 err = -ENOMEM;
1040 goto err_mtt;
1041 }
1042
1043 i = n = 0;
1044
1045 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1046
1047 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1048 for (j = 0; j < chunk->nmap; ++j) {
1049 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1050 for (k = 0; k < len; ++k) {
1051 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1052 mr->umem->page_size * k;
1053 /*
1054 * Be friendly to write_mtt and pass it chunks
1055 * of appropriate size.
1056 */
1057 if (i == write_mtt_size) {
1058 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1059 if (err)
1060 goto mtt_done;
1061 n += i;
1062 i = 0;
1063 }
1064 }
1065 }
1066
1067 if (i)
1068 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1069 mtt_done:
1070 free_page((unsigned long) pages);
1071 if (err)
1072 goto err_mtt;
1073
1074 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1075 convert_access(acc), mr);
1076
1077 if (err)
1078 goto err_mtt;
1079
1080 return &mr->ibmr;
1081
1082 err_mtt:
1083 mthca_free_mtt(dev, mr->mtt);
1084
1085 err_umem:
1086 ib_umem_release(mr->umem);
1087
1088 err:
1089 kfree(mr);
1090 return ERR_PTR(err);
1091 }
1092
1093 static int mthca_dereg_mr(struct ib_mr *mr)
1094 {
1095 struct mthca_mr *mmr = to_mmr(mr);
1096
1097 mthca_free_mr(to_mdev(mr->device), mmr);
1098 if (mmr->umem)
1099 ib_umem_release(mmr->umem);
1100 kfree(mmr);
1101
1102 return 0;
1103 }
1104
1105 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1106 struct ib_fmr_attr *fmr_attr)
1107 {
1108 struct mthca_fmr *fmr;
1109 int err;
1110
1111 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1112 if (!fmr)
1113 return ERR_PTR(-ENOMEM);
1114
1115 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1116 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1117 convert_access(mr_access_flags), fmr);
1118
1119 if (err) {
1120 kfree(fmr);
1121 return ERR_PTR(err);
1122 }
1123
1124 return &fmr->ibmr;
1125 }
1126
1127 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1128 {
1129 struct mthca_fmr *mfmr = to_mfmr(fmr);
1130 int err;
1131
1132 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1133 if (err)
1134 return err;
1135
1136 kfree(mfmr);
1137 return 0;
1138 }
1139
1140 static int mthca_unmap_fmr(struct list_head *fmr_list)
1141 {
1142 struct ib_fmr *fmr;
1143 int err;
1144 u8 status;
1145 struct mthca_dev *mdev = NULL;
1146
1147 list_for_each_entry(fmr, fmr_list, list) {
1148 if (mdev && to_mdev(fmr->device) != mdev)
1149 return -EINVAL;
1150 mdev = to_mdev(fmr->device);
1151 }
1152
1153 if (!mdev)
1154 return 0;
1155
1156 if (mthca_is_memfree(mdev)) {
1157 list_for_each_entry(fmr, fmr_list, list)
1158 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1159
1160 wmb();
1161 } else
1162 list_for_each_entry(fmr, fmr_list, list)
1163 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1164
1165 err = mthca_SYNC_TPT(mdev, &status);
1166 if (err)
1167 return err;
1168 if (status)
1169 return -EINVAL;
1170 return 0;
1171 }
1172
1173 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1174 char *buf)
1175 {
1176 struct mthca_dev *dev =
1177 container_of(device, struct mthca_dev, ib_dev.dev);
1178 return sprintf(buf, "%x\n", dev->rev_id);
1179 }
1180
1181 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1182 char *buf)
1183 {
1184 struct mthca_dev *dev =
1185 container_of(device, struct mthca_dev, ib_dev.dev);
1186 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1187 (int) (dev->fw_ver >> 16) & 0xffff,
1188 (int) dev->fw_ver & 0xffff);
1189 }
1190
1191 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1192 char *buf)
1193 {
1194 struct mthca_dev *dev =
1195 container_of(device, struct mthca_dev, ib_dev.dev);
1196 switch (dev->pdev->device) {
1197 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1198 return sprintf(buf, "MT23108\n");
1199 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1200 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1201 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1202 return sprintf(buf, "MT25208\n");
1203 case PCI_DEVICE_ID_MELLANOX_SINAI:
1204 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1205 return sprintf(buf, "MT25204\n");
1206 default:
1207 return sprintf(buf, "unknown\n");
1208 }
1209 }
1210
1211 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1212 char *buf)
1213 {
1214 struct mthca_dev *dev =
1215 container_of(device, struct mthca_dev, ib_dev.dev);
1216 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1217 }
1218
1219 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1220 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1221 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1222 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1223
1224 static struct device_attribute *mthca_dev_attributes[] = {
1225 &dev_attr_hw_rev,
1226 &dev_attr_fw_ver,
1227 &dev_attr_hca_type,
1228 &dev_attr_board_id
1229 };
1230
1231 static int mthca_init_node_data(struct mthca_dev *dev)
1232 {
1233 struct ib_smp *in_mad = NULL;
1234 struct ib_smp *out_mad = NULL;
1235 int err = -ENOMEM;
1236 u8 status;
1237
1238 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1239 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1240 if (!in_mad || !out_mad)
1241 goto out;
1242
1243 init_query_mad(in_mad);
1244 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1245
1246 err = mthca_MAD_IFC(dev, 1, 1,
1247 1, NULL, NULL, in_mad, out_mad,
1248 &status);
1249 if (err)
1250 goto out;
1251 if (status) {
1252 err = -EINVAL;
1253 goto out;
1254 }
1255
1256 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1257
1258 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1259
1260 err = mthca_MAD_IFC(dev, 1, 1,
1261 1, NULL, NULL, in_mad, out_mad,
1262 &status);
1263 if (err)
1264 goto out;
1265 if (status) {
1266 err = -EINVAL;
1267 goto out;
1268 }
1269
1270 if (mthca_is_memfree(dev))
1271 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1272 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1273
1274 out:
1275 kfree(in_mad);
1276 kfree(out_mad);
1277 return err;
1278 }
1279
1280 int mthca_register_device(struct mthca_dev *dev)
1281 {
1282 int ret;
1283 int i;
1284
1285 ret = mthca_init_node_data(dev);
1286 if (ret)
1287 return ret;
1288
1289 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1290 dev->ib_dev.owner = THIS_MODULE;
1291
1292 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1293 dev->ib_dev.uverbs_cmd_mask =
1294 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1295 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1296 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1297 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1298 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1299 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1300 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1301 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1302 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1303 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1304 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1305 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1306 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1307 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1308 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1309 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1310 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1311 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1312 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1313 dev->ib_dev.num_comp_vectors = 1;
1314 dev->ib_dev.dma_device = &dev->pdev->dev;
1315 dev->ib_dev.query_device = mthca_query_device;
1316 dev->ib_dev.query_port = mthca_query_port;
1317 dev->ib_dev.modify_device = mthca_modify_device;
1318 dev->ib_dev.modify_port = mthca_modify_port;
1319 dev->ib_dev.query_pkey = mthca_query_pkey;
1320 dev->ib_dev.query_gid = mthca_query_gid;
1321 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1322 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1323 dev->ib_dev.mmap = mthca_mmap_uar;
1324 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1325 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1326 dev->ib_dev.create_ah = mthca_ah_create;
1327 dev->ib_dev.query_ah = mthca_ah_query;
1328 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1329
1330 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1331 dev->ib_dev.create_srq = mthca_create_srq;
1332 dev->ib_dev.modify_srq = mthca_modify_srq;
1333 dev->ib_dev.query_srq = mthca_query_srq;
1334 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1335 dev->ib_dev.uverbs_cmd_mask |=
1336 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1337 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1338 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1339 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1340
1341 if (mthca_is_memfree(dev))
1342 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1343 else
1344 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1345 }
1346
1347 dev->ib_dev.create_qp = mthca_create_qp;
1348 dev->ib_dev.modify_qp = mthca_modify_qp;
1349 dev->ib_dev.query_qp = mthca_query_qp;
1350 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1351 dev->ib_dev.create_cq = mthca_create_cq;
1352 dev->ib_dev.resize_cq = mthca_resize_cq;
1353 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1354 dev->ib_dev.poll_cq = mthca_poll_cq;
1355 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1356 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1357 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1358 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1359
1360 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1361 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1362 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1363 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1364 if (mthca_is_memfree(dev))
1365 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1366 else
1367 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1368 }
1369
1370 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1371 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1372 dev->ib_dev.process_mad = mthca_process_mad;
1373
1374 if (mthca_is_memfree(dev)) {
1375 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1376 dev->ib_dev.post_send = mthca_arbel_post_send;
1377 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1378 } else {
1379 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1380 dev->ib_dev.post_send = mthca_tavor_post_send;
1381 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1382 }
1383
1384 mutex_init(&dev->cap_mask_mutex);
1385
1386 ret = ib_register_device(&dev->ib_dev);
1387 if (ret)
1388 return ret;
1389
1390 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1391 ret = device_create_file(&dev->ib_dev.dev,
1392 mthca_dev_attributes[i]);
1393 if (ret) {
1394 ib_unregister_device(&dev->ib_dev);
1395 return ret;
1396 }
1397 }
1398
1399 mthca_start_catas_poll(dev);
1400
1401 return 0;
1402 }
1403
1404 void mthca_unregister_device(struct mthca_dev *dev)
1405 {
1406 mthca_stop_catas_poll(dev);
1407 ib_unregister_device(&dev->ib_dev);
1408 }
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