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IB: Refactor umem to use linear SG table
[linux/fpc-iii.git] / drivers / infiniband / hw / mthca / mthca_provider.c
blob64408000f1c7f8a85e1652954bfd3ea6deea48ea
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/stat.h>
44 #include <linux/mm.h>
45 #include <linux/export.h>
46
47 #include "mthca_dev.h"
48 #include "mthca_cmd.h"
49 #include "mthca_user.h"
50 #include "mthca_memfree.h"
51
52 static void init_query_mad(struct ib_smp *mad)
53 {
54 mad->base_version = 1;
55 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
56 mad->class_version = 1;
57 mad->method = IB_MGMT_METHOD_GET;
58 }
59
60 static int mthca_query_device(struct ib_device *ibdev,
61 struct ib_device_attr *props)
62 {
63 struct ib_smp *in_mad = NULL;
64 struct ib_smp *out_mad = NULL;
65 int err = -ENOMEM;
66 struct mthca_dev *mdev = to_mdev(ibdev);
67
68 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
69 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
70 if (!in_mad || !out_mad)
71 goto out;
72
73 memset(props, 0, sizeof *props);
74
75 props->fw_ver = mdev->fw_ver;
76
77 init_query_mad(in_mad);
78 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
79
80 err = mthca_MAD_IFC(mdev, 1, 1,
81 1, NULL, NULL, in_mad, out_mad);
82 if (err)
83 goto out;
84
85 props->device_cap_flags = mdev->device_cap_flags;
86 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
87 0xffffff;
88 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
89 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
90 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
91
92 props->max_mr_size = ~0ull;
93 props->page_size_cap = mdev->limits.page_size_cap;
94 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
95 props->max_qp_wr = mdev->limits.max_wqes;
96 props->max_sge = mdev->limits.max_sg;
97 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
98 props->max_cqe = mdev->limits.max_cqes;
99 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
100 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
101 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
102 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
103 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
104 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
105 props->max_srq_wr = mdev->limits.max_srq_wqes;
106 props->max_srq_sge = mdev->limits.max_srq_sge;
107 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
108 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
109 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
110 props->max_pkeys = mdev->limits.pkey_table_len;
111 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
112 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
113 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
114 props->max_mcast_grp;
115 /*
116 * If Sinai memory key optimization is being used, then only
117 * the 8-bit key portion will change. For other HCAs, the
118 * unused index bits will also be used for FMR remapping.
119 */
120 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
121 props->max_map_per_fmr = 255;
122 else
123 props->max_map_per_fmr =
124 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
125
126 err = 0;
127 out:
128 kfree(in_mad);
129 kfree(out_mad);
130 return err;
131 }
132
133 static int mthca_query_port(struct ib_device *ibdev,
134 u8 port, struct ib_port_attr *props)
135 {
136 struct ib_smp *in_mad = NULL;
137 struct ib_smp *out_mad = NULL;
138 int err = -ENOMEM;
139
140 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
141 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
142 if (!in_mad || !out_mad)
143 goto out;
144
145 memset(props, 0, sizeof *props);
146
147 init_query_mad(in_mad);
148 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
149 in_mad->attr_mod = cpu_to_be32(port);
150
151 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
152 port, NULL, NULL, in_mad, out_mad);
153 if (err)
154 goto out;
155
156 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
157 props->lmc = out_mad->data[34] & 0x7;
158 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
159 props->sm_sl = out_mad->data[36] & 0xf;
160 props->state = out_mad->data[32] & 0xf;
161 props->phys_state = out_mad->data[33] >> 4;
162 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
163 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
164 props->max_msg_sz = 0x80000000;
165 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
166 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
167 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
168 props->active_width = out_mad->data[31] & 0xf;
169 props->active_speed = out_mad->data[35] >> 4;
170 props->max_mtu = out_mad->data[41] & 0xf;
171 props->active_mtu = out_mad->data[36] >> 4;
172 props->subnet_timeout = out_mad->data[51] & 0x1f;
173 props->max_vl_num = out_mad->data[37] >> 4;
174 props->init_type_reply = out_mad->data[41] >> 4;
175
176 out:
177 kfree(in_mad);
178 kfree(out_mad);
179 return err;
180 }
181
182 static int mthca_modify_device(struct ib_device *ibdev,
183 int mask,
184 struct ib_device_modify *props)
185 {
186 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
187 return -EOPNOTSUPP;
188
189 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
190 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
191 return -ERESTARTSYS;
192 memcpy(ibdev->node_desc, props->node_desc, 64);
193 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
194 }
195
196 return 0;
197 }
198
199 static int mthca_modify_port(struct ib_device *ibdev,
200 u8 port, int port_modify_mask,
201 struct ib_port_modify *props)
202 {
203 struct mthca_set_ib_param set_ib;
204 struct ib_port_attr attr;
205 int err;
206
207 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
208 return -ERESTARTSYS;
209
210 err = mthca_query_port(ibdev, port, &attr);
211 if (err)
212 goto out;
213
214 set_ib.set_si_guid = 0;
215 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
216
217 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
218 ~props->clr_port_cap_mask;
219
220 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
221 if (err)
222 goto out;
223 out:
224 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
225 return err;
226 }
227
228 static int mthca_query_pkey(struct ib_device *ibdev,
229 u8 port, u16 index, u16 *pkey)
230 {
231 struct ib_smp *in_mad = NULL;
232 struct ib_smp *out_mad = NULL;
233 int err = -ENOMEM;
234
235 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
236 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
237 if (!in_mad || !out_mad)
238 goto out;
239
240 init_query_mad(in_mad);
241 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
242 in_mad->attr_mod = cpu_to_be32(index / 32);
243
244 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
245 port, NULL, NULL, in_mad, out_mad);
246 if (err)
247 goto out;
248
249 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
250
251 out:
252 kfree(in_mad);
253 kfree(out_mad);
254 return err;
255 }
256
257 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
258 int index, union ib_gid *gid)
259 {
260 struct ib_smp *in_mad = NULL;
261 struct ib_smp *out_mad = NULL;
262 int err = -ENOMEM;
263
264 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
265 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
266 if (!in_mad || !out_mad)
267 goto out;
268
269 init_query_mad(in_mad);
270 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
271 in_mad->attr_mod = cpu_to_be32(port);
272
273 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
274 port, NULL, NULL, in_mad, out_mad);
275 if (err)
276 goto out;
277
278 memcpy(gid->raw, out_mad->data + 8, 8);
279
280 init_query_mad(in_mad);
281 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
282 in_mad->attr_mod = cpu_to_be32(index / 8);
283
284 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
285 port, NULL, NULL, in_mad, out_mad);
286 if (err)
287 goto out;
288
289 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
290
291 out:
292 kfree(in_mad);
293 kfree(out_mad);
294 return err;
295 }
296
297 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
298 struct ib_udata *udata)
299 {
300 struct mthca_alloc_ucontext_resp uresp;
301 struct mthca_ucontext *context;
302 int err;
303
304 if (!(to_mdev(ibdev)->active))
305 return ERR_PTR(-EAGAIN);
306
307 memset(&uresp, 0, sizeof uresp);
308
309 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
310 if (mthca_is_memfree(to_mdev(ibdev)))
311 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
312 else
313 uresp.uarc_size = 0;
314
315 context = kmalloc(sizeof *context, GFP_KERNEL);
316 if (!context)
317 return ERR_PTR(-ENOMEM);
318
319 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
320 if (err) {
321 kfree(context);
322 return ERR_PTR(err);
323 }
324
325 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
326 if (IS_ERR(context->db_tab)) {
327 err = PTR_ERR(context->db_tab);
328 mthca_uar_free(to_mdev(ibdev), &context->uar);
329 kfree(context);
330 return ERR_PTR(err);
331 }
332
333 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
334 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
335 mthca_uar_free(to_mdev(ibdev), &context->uar);
336 kfree(context);
337 return ERR_PTR(-EFAULT);
338 }
339
340 context->reg_mr_warned = 0;
341
342 return &context->ibucontext;
343 }
344
345 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
346 {
347 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
348 to_mucontext(context)->db_tab);
349 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
350 kfree(to_mucontext(context));
351
352 return 0;
353 }
354
355 static int mthca_mmap_uar(struct ib_ucontext *context,
356 struct vm_area_struct *vma)
357 {
358 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
359 return -EINVAL;
360
361 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
362
363 if (io_remap_pfn_range(vma, vma->vm_start,
364 to_mucontext(context)->uar.pfn,
365 PAGE_SIZE, vma->vm_page_prot))
366 return -EAGAIN;
367
368 return 0;
369 }
370
371 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
372 struct ib_ucontext *context,
373 struct ib_udata *udata)
374 {
375 struct mthca_pd *pd;
376 int err;
377
378 pd = kmalloc(sizeof *pd, GFP_KERNEL);
379 if (!pd)
380 return ERR_PTR(-ENOMEM);
381
382 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
383 if (err) {
384 kfree(pd);
385 return ERR_PTR(err);
386 }
387
388 if (context) {
389 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
390 mthca_pd_free(to_mdev(ibdev), pd);
391 kfree(pd);
392 return ERR_PTR(-EFAULT);
393 }
394 }
395
396 return &pd->ibpd;
397 }
398
399 static int mthca_dealloc_pd(struct ib_pd *pd)
400 {
401 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
402 kfree(pd);
403
404 return 0;
405 }
406
407 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
408 struct ib_ah_attr *ah_attr)
409 {
410 int err;
411 struct mthca_ah *ah;
412
413 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
414 if (!ah)
415 return ERR_PTR(-ENOMEM);
416
417 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
418 if (err) {
419 kfree(ah);
420 return ERR_PTR(err);
421 }
422
423 return &ah->ibah;
424 }
425
426 static int mthca_ah_destroy(struct ib_ah *ah)
427 {
428 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
429 kfree(ah);
430
431 return 0;
432 }
433
434 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
435 struct ib_srq_init_attr *init_attr,
436 struct ib_udata *udata)
437 {
438 struct mthca_create_srq ucmd;
439 struct mthca_ucontext *context = NULL;
440 struct mthca_srq *srq;
441 int err;
442
443 if (init_attr->srq_type != IB_SRQT_BASIC)
444 return ERR_PTR(-ENOSYS);
445
446 srq = kmalloc(sizeof *srq, GFP_KERNEL);
447 if (!srq)
448 return ERR_PTR(-ENOMEM);
449
450 if (pd->uobject) {
451 context = to_mucontext(pd->uobject->context);
452
453 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
454 err = -EFAULT;
455 goto err_free;
456 }
457
458 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
459 context->db_tab, ucmd.db_index,
460 ucmd.db_page);
461
462 if (err)
463 goto err_free;
464
465 srq->mr.ibmr.lkey = ucmd.lkey;
466 srq->db_index = ucmd.db_index;
467 }
468
469 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
470 &init_attr->attr, srq);
471
472 if (err && pd->uobject)
473 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
474 context->db_tab, ucmd.db_index);
475
476 if (err)
477 goto err_free;
478
479 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
480 mthca_free_srq(to_mdev(pd->device), srq);
481 err = -EFAULT;
482 goto err_free;
483 }
484
485 return &srq->ibsrq;
486
487 err_free:
488 kfree(srq);
489
490 return ERR_PTR(err);
491 }
492
493 static int mthca_destroy_srq(struct ib_srq *srq)
494 {
495 struct mthca_ucontext *context;
496
497 if (srq->uobject) {
498 context = to_mucontext(srq->uobject->context);
499
500 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
501 context->db_tab, to_msrq(srq)->db_index);
502 }
503
504 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
505 kfree(srq);
506
507 return 0;
508 }
509
510 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
511 struct ib_qp_init_attr *init_attr,
512 struct ib_udata *udata)
513 {
514 struct mthca_create_qp ucmd;
515 struct mthca_qp *qp;
516 int err;
517
518 if (init_attr->create_flags)
519 return ERR_PTR(-EINVAL);
520
521 switch (init_attr->qp_type) {
522 case IB_QPT_RC:
523 case IB_QPT_UC:
524 case IB_QPT_UD:
525 {
526 struct mthca_ucontext *context;
527
528 qp = kmalloc(sizeof *qp, GFP_KERNEL);
529 if (!qp)
530 return ERR_PTR(-ENOMEM);
531
532 if (pd->uobject) {
533 context = to_mucontext(pd->uobject->context);
534
535 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
536 kfree(qp);
537 return ERR_PTR(-EFAULT);
538 }
539
540 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
541 context->db_tab,
542 ucmd.sq_db_index, ucmd.sq_db_page);
543 if (err) {
544 kfree(qp);
545 return ERR_PTR(err);
546 }
547
548 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
549 context->db_tab,
550 ucmd.rq_db_index, ucmd.rq_db_page);
551 if (err) {
552 mthca_unmap_user_db(to_mdev(pd->device),
553 &context->uar,
554 context->db_tab,
555 ucmd.sq_db_index);
556 kfree(qp);
557 return ERR_PTR(err);
558 }
559
560 qp->mr.ibmr.lkey = ucmd.lkey;
561 qp->sq.db_index = ucmd.sq_db_index;
562 qp->rq.db_index = ucmd.rq_db_index;
563 }
564
565 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
566 to_mcq(init_attr->send_cq),
567 to_mcq(init_attr->recv_cq),
568 init_attr->qp_type, init_attr->sq_sig_type,
569 &init_attr->cap, qp);
570
571 if (err && pd->uobject) {
572 context = to_mucontext(pd->uobject->context);
573
574 mthca_unmap_user_db(to_mdev(pd->device),
575 &context->uar,
576 context->db_tab,
577 ucmd.sq_db_index);
578 mthca_unmap_user_db(to_mdev(pd->device),
579 &context->uar,
580 context->db_tab,
581 ucmd.rq_db_index);
582 }
583
584 qp->ibqp.qp_num = qp->qpn;
585 break;
586 }
587 case IB_QPT_SMI:
588 case IB_QPT_GSI:
589 {
590 /* Don't allow userspace to create special QPs */
591 if (pd->uobject)
592 return ERR_PTR(-EINVAL);
593
594 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
595 if (!qp)
596 return ERR_PTR(-ENOMEM);
597
598 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
599
600 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
601 to_mcq(init_attr->send_cq),
602 to_mcq(init_attr->recv_cq),
603 init_attr->sq_sig_type, &init_attr->cap,
604 qp->ibqp.qp_num, init_attr->port_num,
605 to_msqp(qp));
606 break;
607 }
608 default:
609 /* Don't support raw QPs */
610 return ERR_PTR(-ENOSYS);
611 }
612
613 if (err) {
614 kfree(qp);
615 return ERR_PTR(err);
616 }
617
618 init_attr->cap.max_send_wr = qp->sq.max;
619 init_attr->cap.max_recv_wr = qp->rq.max;
620 init_attr->cap.max_send_sge = qp->sq.max_gs;
621 init_attr->cap.max_recv_sge = qp->rq.max_gs;
622 init_attr->cap.max_inline_data = qp->max_inline_data;
623
624 return &qp->ibqp;
625 }
626
627 static int mthca_destroy_qp(struct ib_qp *qp)
628 {
629 if (qp->uobject) {
630 mthca_unmap_user_db(to_mdev(qp->device),
631 &to_mucontext(qp->uobject->context)->uar,
632 to_mucontext(qp->uobject->context)->db_tab,
633 to_mqp(qp)->sq.db_index);
634 mthca_unmap_user_db(to_mdev(qp->device),
635 &to_mucontext(qp->uobject->context)->uar,
636 to_mucontext(qp->uobject->context)->db_tab,
637 to_mqp(qp)->rq.db_index);
638 }
639 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
640 kfree(qp);
641 return 0;
642 }
643
644 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
645 int comp_vector,
646 struct ib_ucontext *context,
647 struct ib_udata *udata)
648 {
649 struct mthca_create_cq ucmd;
650 struct mthca_cq *cq;
651 int nent;
652 int err;
653
654 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
655 return ERR_PTR(-EINVAL);
656
657 if (context) {
658 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
659 return ERR_PTR(-EFAULT);
660
661 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
662 to_mucontext(context)->db_tab,
663 ucmd.set_db_index, ucmd.set_db_page);
664 if (err)
665 return ERR_PTR(err);
666
667 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
668 to_mucontext(context)->db_tab,
669 ucmd.arm_db_index, ucmd.arm_db_page);
670 if (err)
671 goto err_unmap_set;
672 }
673
674 cq = kmalloc(sizeof *cq, GFP_KERNEL);
675 if (!cq) {
676 err = -ENOMEM;
677 goto err_unmap_arm;
678 }
679
680 if (context) {
681 cq->buf.mr.ibmr.lkey = ucmd.lkey;
682 cq->set_ci_db_index = ucmd.set_db_index;
683 cq->arm_db_index = ucmd.arm_db_index;
684 }
685
686 for (nent = 1; nent <= entries; nent <<= 1)
687 ; /* nothing */
688
689 err = mthca_init_cq(to_mdev(ibdev), nent,
690 context ? to_mucontext(context) : NULL,
691 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
692 cq);
693 if (err)
694 goto err_free;
695
696 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
697 mthca_free_cq(to_mdev(ibdev), cq);
698 goto err_free;
699 }
700
701 cq->resize_buf = NULL;
702
703 return &cq->ibcq;
704
705 err_free:
706 kfree(cq);
707
708 err_unmap_arm:
709 if (context)
710 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
711 to_mucontext(context)->db_tab, ucmd.arm_db_index);
712
713 err_unmap_set:
714 if (context)
715 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
716 to_mucontext(context)->db_tab, ucmd.set_db_index);
717
718 return ERR_PTR(err);
719 }
720
721 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
722 int entries)
723 {
724 int ret;
725
726 spin_lock_irq(&cq->lock);
727 if (cq->resize_buf) {
728 ret = -EBUSY;
729 goto unlock;
730 }
731
732 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
733 if (!cq->resize_buf) {
734 ret = -ENOMEM;
735 goto unlock;
736 }
737
738 cq->resize_buf->state = CQ_RESIZE_ALLOC;
739
740 ret = 0;
741
742 unlock:
743 spin_unlock_irq(&cq->lock);
744
745 if (ret)
746 return ret;
747
748 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
749 if (ret) {
750 spin_lock_irq(&cq->lock);
751 kfree(cq->resize_buf);
752 cq->resize_buf = NULL;
753 spin_unlock_irq(&cq->lock);
754 return ret;
755 }
756
757 cq->resize_buf->cqe = entries - 1;
758
759 spin_lock_irq(&cq->lock);
760 cq->resize_buf->state = CQ_RESIZE_READY;
761 spin_unlock_irq(&cq->lock);
762
763 return 0;
764 }
765
766 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
767 {
768 struct mthca_dev *dev = to_mdev(ibcq->device);
769 struct mthca_cq *cq = to_mcq(ibcq);
770 struct mthca_resize_cq ucmd;
771 u32 lkey;
772 int ret;
773
774 if (entries < 1 || entries > dev->limits.max_cqes)
775 return -EINVAL;
776
777 mutex_lock(&cq->mutex);
778
779 entries = roundup_pow_of_two(entries + 1);
780 if (entries == ibcq->cqe + 1) {
781 ret = 0;
782 goto out;
783 }
784
785 if (cq->is_kernel) {
786 ret = mthca_alloc_resize_buf(dev, cq, entries);
787 if (ret)
788 goto out;
789 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
790 } else {
791 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
792 ret = -EFAULT;
793 goto out;
794 }
795 lkey = ucmd.lkey;
796 }
797
798 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
799
800 if (ret) {
801 if (cq->resize_buf) {
802 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
803 cq->resize_buf->cqe);
804 kfree(cq->resize_buf);
805 spin_lock_irq(&cq->lock);
806 cq->resize_buf = NULL;
807 spin_unlock_irq(&cq->lock);
808 }
809 goto out;
810 }
811
812 if (cq->is_kernel) {
813 struct mthca_cq_buf tbuf;
814 int tcqe;
815
816 spin_lock_irq(&cq->lock);
817 if (cq->resize_buf->state == CQ_RESIZE_READY) {
818 mthca_cq_resize_copy_cqes(cq);
819 tbuf = cq->buf;
820 tcqe = cq->ibcq.cqe;
821 cq->buf = cq->resize_buf->buf;
822 cq->ibcq.cqe = cq->resize_buf->cqe;
823 } else {
824 tbuf = cq->resize_buf->buf;
825 tcqe = cq->resize_buf->cqe;
826 }
827
828 kfree(cq->resize_buf);
829 cq->resize_buf = NULL;
830 spin_unlock_irq(&cq->lock);
831
832 mthca_free_cq_buf(dev, &tbuf, tcqe);
833 } else
834 ibcq->cqe = entries - 1;
835
836 out:
837 mutex_unlock(&cq->mutex);
838
839 return ret;
840 }
841
842 static int mthca_destroy_cq(struct ib_cq *cq)
843 {
844 if (cq->uobject) {
845 mthca_unmap_user_db(to_mdev(cq->device),
846 &to_mucontext(cq->uobject->context)->uar,
847 to_mucontext(cq->uobject->context)->db_tab,
848 to_mcq(cq)->arm_db_index);
849 mthca_unmap_user_db(to_mdev(cq->device),
850 &to_mucontext(cq->uobject->context)->uar,
851 to_mucontext(cq->uobject->context)->db_tab,
852 to_mcq(cq)->set_ci_db_index);
853 }
854 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
855 kfree(cq);
856
857 return 0;
858 }
859
860 static inline u32 convert_access(int acc)
861 {
862 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
863 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
864 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
865 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
866 MTHCA_MPT_FLAG_LOCAL_READ;
867 }
868
869 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
870 {
871 struct mthca_mr *mr;
872 int err;
873
874 mr = kmalloc(sizeof *mr, GFP_KERNEL);
875 if (!mr)
876 return ERR_PTR(-ENOMEM);
877
878 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
879 to_mpd(pd)->pd_num,
880 convert_access(acc), mr);
881
882 if (err) {
883 kfree(mr);
884 return ERR_PTR(err);
885 }
886
887 mr->umem = NULL;
888
889 return &mr->ibmr;
890 }
891
892 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
893 struct ib_phys_buf *buffer_list,
894 int num_phys_buf,
895 int acc,
896 u64 *iova_start)
897 {
898 struct mthca_mr *mr;
899 u64 *page_list;
900 u64 total_size;
901 unsigned long mask;
902 int shift;
903 int npages;
904 int err;
905 int i, j, n;
906
907 mask = buffer_list[0].addr ^ *iova_start;
908 total_size = 0;
909 for (i = 0; i < num_phys_buf; ++i) {
910 if (i != 0)
911 mask |= buffer_list[i].addr;
912 if (i != num_phys_buf - 1)
913 mask |= buffer_list[i].addr + buffer_list[i].size;
914
915 total_size += buffer_list[i].size;
916 }
917
918 if (mask & ~PAGE_MASK)
919 return ERR_PTR(-EINVAL);
920
921 shift = __ffs(mask | 1 << 31);
922
923 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
924 buffer_list[0].addr &= ~0ull << shift;
925
926 mr = kmalloc(sizeof *mr, GFP_KERNEL);
927 if (!mr)
928 return ERR_PTR(-ENOMEM);
929
930 npages = 0;
931 for (i = 0; i < num_phys_buf; ++i)
932 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
933
934 if (!npages)
935 return &mr->ibmr;
936
937 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
938 if (!page_list) {
939 kfree(mr);
940 return ERR_PTR(-ENOMEM);
941 }
942
943 n = 0;
944 for (i = 0; i < num_phys_buf; ++i)
945 for (j = 0;
946 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
947 ++j)
948 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
949
950 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
951 "in PD %x; shift %d, npages %d.\n",
952 (unsigned long long) buffer_list[0].addr,
953 (unsigned long long) *iova_start,
954 to_mpd(pd)->pd_num,
955 shift, npages);
956
957 err = mthca_mr_alloc_phys(to_mdev(pd->device),
958 to_mpd(pd)->pd_num,
959 page_list, shift, npages,
960 *iova_start, total_size,
961 convert_access(acc), mr);
962
963 if (err) {
964 kfree(page_list);
965 kfree(mr);
966 return ERR_PTR(err);
967 }
968
969 kfree(page_list);
970 mr->umem = NULL;
971
972 return &mr->ibmr;
973 }
974
975 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
976 u64 virt, int acc, struct ib_udata *udata)
977 {
978 struct mthca_dev *dev = to_mdev(pd->device);
979 struct scatterlist *sg;
980 struct mthca_mr *mr;
981 struct mthca_reg_mr ucmd;
982 u64 *pages;
983 int shift, n, len;
984 int i, k, entry;
985 int err = 0;
986 int write_mtt_size;
987
988 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
989 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
990 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
991 current->comm);
992 mthca_warn(dev, " Update libmthca to fix this.\n");
993 }
994 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
995 ucmd.mr_attrs = 0;
996 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
997 return ERR_PTR(-EFAULT);
998
999 mr = kmalloc(sizeof *mr, GFP_KERNEL);
1000 if (!mr)
1001 return ERR_PTR(-ENOMEM);
1002
1003 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1004 ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1005
1006 if (IS_ERR(mr->umem)) {
1007 err = PTR_ERR(mr->umem);
1008 goto err;
1009 }
1010
1011 shift = ffs(mr->umem->page_size) - 1;
1012 n = mr->umem->nmap;
1013
1014 mr->mtt = mthca_alloc_mtt(dev, n);
1015 if (IS_ERR(mr->mtt)) {
1016 err = PTR_ERR(mr->mtt);
1017 goto err_umem;
1018 }
1019
1020 pages = (u64 *) __get_free_page(GFP_KERNEL);
1021 if (!pages) {
1022 err = -ENOMEM;
1023 goto err_mtt;
1024 }
1025
1026 i = n = 0;
1027
1028 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1029
1030 for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) {
1031 len = sg_dma_len(sg) >> shift;
1032 for (k = 0; k < len; ++k) {
1033 pages[i++] = sg_dma_address(sg) +
1034 mr->umem->page_size * k;
1035 /*
1036 * Be friendly to write_mtt and pass it chunks
1037 * of appropriate size.
1038 */
1039 if (i == write_mtt_size) {
1040 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1041 if (err)
1042 goto mtt_done;
1043 n += i;
1044 i = 0;
1045 }
1046 }
1047 }
1048
1049 if (i)
1050 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1051 mtt_done:
1052 free_page((unsigned long) pages);
1053 if (err)
1054 goto err_mtt;
1055
1056 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1057 convert_access(acc), mr);
1058
1059 if (err)
1060 goto err_mtt;
1061
1062 return &mr->ibmr;
1063
1064 err_mtt:
1065 mthca_free_mtt(dev, mr->mtt);
1066
1067 err_umem:
1068 ib_umem_release(mr->umem);
1069
1070 err:
1071 kfree(mr);
1072 return ERR_PTR(err);
1073 }
1074
1075 static int mthca_dereg_mr(struct ib_mr *mr)
1076 {
1077 struct mthca_mr *mmr = to_mmr(mr);
1078
1079 mthca_free_mr(to_mdev(mr->device), mmr);
1080 if (mmr->umem)
1081 ib_umem_release(mmr->umem);
1082 kfree(mmr);
1083
1084 return 0;
1085 }
1086
1087 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1088 struct ib_fmr_attr *fmr_attr)
1089 {
1090 struct mthca_fmr *fmr;
1091 int err;
1092
1093 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1094 if (!fmr)
1095 return ERR_PTR(-ENOMEM);
1096
1097 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1098 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1099 convert_access(mr_access_flags), fmr);
1100
1101 if (err) {
1102 kfree(fmr);
1103 return ERR_PTR(err);
1104 }
1105
1106 return &fmr->ibmr;
1107 }
1108
1109 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1110 {
1111 struct mthca_fmr *mfmr = to_mfmr(fmr);
1112 int err;
1113
1114 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1115 if (err)
1116 return err;
1117
1118 kfree(mfmr);
1119 return 0;
1120 }
1121
1122 static int mthca_unmap_fmr(struct list_head *fmr_list)
1123 {
1124 struct ib_fmr *fmr;
1125 int err;
1126 struct mthca_dev *mdev = NULL;
1127
1128 list_for_each_entry(fmr, fmr_list, list) {
1129 if (mdev && to_mdev(fmr->device) != mdev)
1130 return -EINVAL;
1131 mdev = to_mdev(fmr->device);
1132 }
1133
1134 if (!mdev)
1135 return 0;
1136
1137 if (mthca_is_memfree(mdev)) {
1138 list_for_each_entry(fmr, fmr_list, list)
1139 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1140
1141 wmb();
1142 } else
1143 list_for_each_entry(fmr, fmr_list, list)
1144 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1145
1146 err = mthca_SYNC_TPT(mdev);
1147 return err;
1148 }
1149
1150 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1151 char *buf)
1152 {
1153 struct mthca_dev *dev =
1154 container_of(device, struct mthca_dev, ib_dev.dev);
1155 return sprintf(buf, "%x\n", dev->rev_id);
1156 }
1157
1158 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1159 char *buf)
1160 {
1161 struct mthca_dev *dev =
1162 container_of(device, struct mthca_dev, ib_dev.dev);
1163 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1164 (int) (dev->fw_ver >> 16) & 0xffff,
1165 (int) dev->fw_ver & 0xffff);
1166 }
1167
1168 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1169 char *buf)
1170 {
1171 struct mthca_dev *dev =
1172 container_of(device, struct mthca_dev, ib_dev.dev);
1173 switch (dev->pdev->device) {
1174 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1175 return sprintf(buf, "MT23108\n");
1176 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1177 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1178 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1179 return sprintf(buf, "MT25208\n");
1180 case PCI_DEVICE_ID_MELLANOX_SINAI:
1181 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1182 return sprintf(buf, "MT25204\n");
1183 default:
1184 return sprintf(buf, "unknown\n");
1185 }
1186 }
1187
1188 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1189 char *buf)
1190 {
1191 struct mthca_dev *dev =
1192 container_of(device, struct mthca_dev, ib_dev.dev);
1193 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1194 }
1195
1196 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1197 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1198 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1199 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1200
1201 static struct device_attribute *mthca_dev_attributes[] = {
1202 &dev_attr_hw_rev,
1203 &dev_attr_fw_ver,
1204 &dev_attr_hca_type,
1205 &dev_attr_board_id
1206 };
1207
1208 static int mthca_init_node_data(struct mthca_dev *dev)
1209 {
1210 struct ib_smp *in_mad = NULL;
1211 struct ib_smp *out_mad = NULL;
1212 int err = -ENOMEM;
1213
1214 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1215 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1216 if (!in_mad || !out_mad)
1217 goto out;
1218
1219 init_query_mad(in_mad);
1220 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1221
1222 err = mthca_MAD_IFC(dev, 1, 1,
1223 1, NULL, NULL, in_mad, out_mad);
1224 if (err)
1225 goto out;
1226
1227 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1228
1229 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1230
1231 err = mthca_MAD_IFC(dev, 1, 1,
1232 1, NULL, NULL, in_mad, out_mad);
1233 if (err)
1234 goto out;
1235
1236 if (mthca_is_memfree(dev))
1237 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1238 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1239
1240 out:
1241 kfree(in_mad);
1242 kfree(out_mad);
1243 return err;
1244 }
1245
1246 int mthca_register_device(struct mthca_dev *dev)
1247 {
1248 int ret;
1249 int i;
1250
1251 ret = mthca_init_node_data(dev);
1252 if (ret)
1253 return ret;
1254
1255 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1256 dev->ib_dev.owner = THIS_MODULE;
1257
1258 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1259 dev->ib_dev.uverbs_cmd_mask =
1260 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1261 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1262 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1263 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1264 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1265 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1266 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1267 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1268 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1269 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1270 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1271 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1272 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1273 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1274 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1275 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1276 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1277 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1278 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1279 dev->ib_dev.num_comp_vectors = 1;
1280 dev->ib_dev.dma_device = &dev->pdev->dev;
1281 dev->ib_dev.query_device = mthca_query_device;
1282 dev->ib_dev.query_port = mthca_query_port;
1283 dev->ib_dev.modify_device = mthca_modify_device;
1284 dev->ib_dev.modify_port = mthca_modify_port;
1285 dev->ib_dev.query_pkey = mthca_query_pkey;
1286 dev->ib_dev.query_gid = mthca_query_gid;
1287 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1288 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1289 dev->ib_dev.mmap = mthca_mmap_uar;
1290 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1291 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1292 dev->ib_dev.create_ah = mthca_ah_create;
1293 dev->ib_dev.query_ah = mthca_ah_query;
1294 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1295
1296 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1297 dev->ib_dev.create_srq = mthca_create_srq;
1298 dev->ib_dev.modify_srq = mthca_modify_srq;
1299 dev->ib_dev.query_srq = mthca_query_srq;
1300 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1301 dev->ib_dev.uverbs_cmd_mask |=
1302 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1303 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1304 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1305 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1306
1307 if (mthca_is_memfree(dev))
1308 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1309 else
1310 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1311 }
1312
1313 dev->ib_dev.create_qp = mthca_create_qp;
1314 dev->ib_dev.modify_qp = mthca_modify_qp;
1315 dev->ib_dev.query_qp = mthca_query_qp;
1316 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1317 dev->ib_dev.create_cq = mthca_create_cq;
1318 dev->ib_dev.resize_cq = mthca_resize_cq;
1319 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1320 dev->ib_dev.poll_cq = mthca_poll_cq;
1321 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1322 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1323 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1324 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1325
1326 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1327 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1328 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1329 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1330 if (mthca_is_memfree(dev))
1331 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1332 else
1333 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1334 }
1335
1336 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1337 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1338 dev->ib_dev.process_mad = mthca_process_mad;
1339
1340 if (mthca_is_memfree(dev)) {
1341 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1342 dev->ib_dev.post_send = mthca_arbel_post_send;
1343 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1344 } else {
1345 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1346 dev->ib_dev.post_send = mthca_tavor_post_send;
1347 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1348 }
1349
1350 mutex_init(&dev->cap_mask_mutex);
1351
1352 ret = ib_register_device(&dev->ib_dev, NULL);
1353 if (ret)
1354 return ret;
1355
1356 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1357 ret = device_create_file(&dev->ib_dev.dev,
1358 mthca_dev_attributes[i]);
1359 if (ret) {
1360 ib_unregister_device(&dev->ib_dev);
1361 return ret;
1362 }
1363 }
1364
1365 mthca_start_catas_poll(dev);
1366
1367 return 0;
1368 }
1369
1370 void mthca_unregister_device(struct mthca_dev *dev)
1371 {
1372 mthca_stop_catas_poll(dev);
1373 ib_unregister_device(&dev->ib_dev);
1374 }
Linux with added FPC-III support