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IB: Add node_guid to struct ib_device
[deliverable/linux.git] / drivers / infiniband / hw / mthca / mthca_provider.c
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 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_user_verbs.h>
41 #include <linux/mm.h>
42
43 #include "mthca_dev.h"
44 #include "mthca_cmd.h"
45 #include "mthca_user.h"
46 #include "mthca_memfree.h"
47
48 static void init_query_mad(struct ib_smp *mad)
49 {
50 mad->base_version = 1;
51 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
52 mad->class_version = 1;
53 mad->method = IB_MGMT_METHOD_GET;
54 }
55
56 static int mthca_query_device(struct ib_device *ibdev,
57 struct ib_device_attr *props)
58 {
59 struct ib_smp *in_mad = NULL;
60 struct ib_smp *out_mad = NULL;
61 int err = -ENOMEM;
62 struct mthca_dev* mdev = to_mdev(ibdev);
63
64 u8 status;
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 &status);
81 if (err)
82 goto out;
83 if (status) {
84 err = -EINVAL;
85 goto out;
86 }
87
88 props->device_cap_flags = mdev->device_cap_flags;
89 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
90 0xffffff;
91 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
92 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
93 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
94
95 props->max_mr_size = ~0ull;
96 props->page_size_cap = mdev->limits.page_size_cap;
97 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
98 props->max_qp_wr = mdev->limits.max_wqes;
99 props->max_sge = mdev->limits.max_sg;
100 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
101 props->max_cqe = mdev->limits.max_cqes;
102 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
103 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
104 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
105 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
106 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
107 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
108 props->max_srq_wr = mdev->limits.max_srq_wqes;
109 props->max_srq_sge = mdev->limits.max_sg;
110 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
111 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
112 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
113 props->max_pkeys = mdev->limits.pkey_table_len;
114 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
115 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
116 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
117 props->max_mcast_grp;
118
119 err = 0;
120 out:
121 kfree(in_mad);
122 kfree(out_mad);
123 return err;
124 }
125
126 static int mthca_query_port(struct ib_device *ibdev,
127 u8 port, struct ib_port_attr *props)
128 {
129 struct ib_smp *in_mad = NULL;
130 struct ib_smp *out_mad = NULL;
131 int err = -ENOMEM;
132 u8 status;
133
134 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
135 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
136 if (!in_mad || !out_mad)
137 goto out;
138
139 memset(props, 0, sizeof *props);
140
141 init_query_mad(in_mad);
142 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
143 in_mad->attr_mod = cpu_to_be32(port);
144
145 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
146 port, NULL, NULL, in_mad, out_mad,
147 &status);
148 if (err)
149 goto out;
150 if (status) {
151 err = -EINVAL;
152 goto out;
153 }
154
155 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
156 props->lmc = out_mad->data[34] & 0x7;
157 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
158 props->sm_sl = out_mad->data[36] & 0xf;
159 props->state = out_mad->data[32] & 0xf;
160 props->phys_state = out_mad->data[33] >> 4;
161 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
162 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
163 props->max_msg_sz = 0x80000000;
164 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
165 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
166 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
167 props->active_width = out_mad->data[31] & 0xf;
168 props->active_speed = out_mad->data[35] >> 4;
169 props->max_mtu = out_mad->data[41] & 0xf;
170 props->active_mtu = out_mad->data[36] >> 4;
171 props->subnet_timeout = out_mad->data[51] & 0x1f;
172
173 out:
174 kfree(in_mad);
175 kfree(out_mad);
176 return err;
177 }
178
179 static int mthca_modify_port(struct ib_device *ibdev,
180 u8 port, int port_modify_mask,
181 struct ib_port_modify *props)
182 {
183 struct mthca_set_ib_param set_ib;
184 struct ib_port_attr attr;
185 int err;
186 u8 status;
187
188 if (down_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
189 return -ERESTARTSYS;
190
191 err = mthca_query_port(ibdev, port, &attr);
192 if (err)
193 goto out;
194
195 set_ib.set_si_guid = 0;
196 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
197
198 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
199 ~props->clr_port_cap_mask;
200
201 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
202 if (err)
203 goto out;
204 if (status) {
205 err = -EINVAL;
206 goto out;
207 }
208
209 out:
210 up(&to_mdev(ibdev)->cap_mask_mutex);
211 return err;
212 }
213
214 static int mthca_query_pkey(struct ib_device *ibdev,
215 u8 port, u16 index, u16 *pkey)
216 {
217 struct ib_smp *in_mad = NULL;
218 struct ib_smp *out_mad = NULL;
219 int err = -ENOMEM;
220 u8 status;
221
222 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
223 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
224 if (!in_mad || !out_mad)
225 goto out;
226
227 init_query_mad(in_mad);
228 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
229 in_mad->attr_mod = cpu_to_be32(index / 32);
230
231 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
232 port, NULL, NULL, in_mad, out_mad,
233 &status);
234 if (err)
235 goto out;
236 if (status) {
237 err = -EINVAL;
238 goto out;
239 }
240
241 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
242
243 out:
244 kfree(in_mad);
245 kfree(out_mad);
246 return err;
247 }
248
249 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
250 int index, union ib_gid *gid)
251 {
252 struct ib_smp *in_mad = NULL;
253 struct ib_smp *out_mad = NULL;
254 int err = -ENOMEM;
255 u8 status;
256
257 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
258 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
259 if (!in_mad || !out_mad)
260 goto out;
261
262 init_query_mad(in_mad);
263 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
264 in_mad->attr_mod = cpu_to_be32(port);
265
266 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
267 port, NULL, NULL, in_mad, out_mad,
268 &status);
269 if (err)
270 goto out;
271 if (status) {
272 err = -EINVAL;
273 goto out;
274 }
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 &status);
285 if (err)
286 goto out;
287 if (status) {
288 err = -EINVAL;
289 goto out;
290 }
291
292 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 16, 8);
293
294 out:
295 kfree(in_mad);
296 kfree(out_mad);
297 return err;
298 }
299
300 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
301 struct ib_udata *udata)
302 {
303 struct mthca_alloc_ucontext_resp uresp;
304 struct mthca_ucontext *context;
305 int err;
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 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 return ERR_PTR(-EFAULT);
450
451 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
452 context->db_tab, ucmd.db_index,
453 ucmd.db_page);
454
455 if (err)
456 goto err_free;
457
458 srq->mr.ibmr.lkey = ucmd.lkey;
459 srq->db_index = ucmd.db_index;
460 }
461
462 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
463 &init_attr->attr, srq);
464
465 if (err && pd->uobject)
466 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
467 context->db_tab, ucmd.db_index);
468
469 if (err)
470 goto err_free;
471
472 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
473 mthca_free_srq(to_mdev(pd->device), srq);
474 err = -EFAULT;
475 goto err_free;
476 }
477
478 return &srq->ibsrq;
479
480 err_free:
481 kfree(srq);
482
483 return ERR_PTR(err);
484 }
485
486 static int mthca_destroy_srq(struct ib_srq *srq)
487 {
488 struct mthca_ucontext *context;
489
490 if (srq->uobject) {
491 context = to_mucontext(srq->uobject->context);
492
493 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
494 context->db_tab, to_msrq(srq)->db_index);
495 }
496
497 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
498 kfree(srq);
499
500 return 0;
501 }
502
503 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
504 struct ib_qp_init_attr *init_attr,
505 struct ib_udata *udata)
506 {
507 struct mthca_create_qp ucmd;
508 struct mthca_qp *qp;
509 int err;
510
511 switch (init_attr->qp_type) {
512 case IB_QPT_RC:
513 case IB_QPT_UC:
514 case IB_QPT_UD:
515 {
516 struct mthca_ucontext *context;
517
518 qp = kmalloc(sizeof *qp, GFP_KERNEL);
519 if (!qp)
520 return ERR_PTR(-ENOMEM);
521
522 if (pd->uobject) {
523 context = to_mucontext(pd->uobject->context);
524
525 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
526 return ERR_PTR(-EFAULT);
527
528 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
529 context->db_tab,
530 ucmd.sq_db_index, ucmd.sq_db_page);
531 if (err) {
532 kfree(qp);
533 return ERR_PTR(err);
534 }
535
536 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
537 context->db_tab,
538 ucmd.rq_db_index, ucmd.rq_db_page);
539 if (err) {
540 mthca_unmap_user_db(to_mdev(pd->device),
541 &context->uar,
542 context->db_tab,
543 ucmd.sq_db_index);
544 kfree(qp);
545 return ERR_PTR(err);
546 }
547
548 qp->mr.ibmr.lkey = ucmd.lkey;
549 qp->sq.db_index = ucmd.sq_db_index;
550 qp->rq.db_index = ucmd.rq_db_index;
551 }
552
553 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
554 to_mcq(init_attr->send_cq),
555 to_mcq(init_attr->recv_cq),
556 init_attr->qp_type, init_attr->sq_sig_type,
557 &init_attr->cap, qp);
558
559 if (err && pd->uobject) {
560 context = to_mucontext(pd->uobject->context);
561
562 mthca_unmap_user_db(to_mdev(pd->device),
563 &context->uar,
564 context->db_tab,
565 ucmd.sq_db_index);
566 mthca_unmap_user_db(to_mdev(pd->device),
567 &context->uar,
568 context->db_tab,
569 ucmd.rq_db_index);
570 }
571
572 qp->ibqp.qp_num = qp->qpn;
573 break;
574 }
575 case IB_QPT_SMI:
576 case IB_QPT_GSI:
577 {
578 /* Don't allow userspace to create special QPs */
579 if (pd->uobject)
580 return ERR_PTR(-EINVAL);
581
582 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
583 if (!qp)
584 return ERR_PTR(-ENOMEM);
585
586 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
587
588 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
589 to_mcq(init_attr->send_cq),
590 to_mcq(init_attr->recv_cq),
591 init_attr->sq_sig_type, &init_attr->cap,
592 qp->ibqp.qp_num, init_attr->port_num,
593 to_msqp(qp));
594 break;
595 }
596 default:
597 /* Don't support raw QPs */
598 return ERR_PTR(-ENOSYS);
599 }
600
601 if (err) {
602 kfree(qp);
603 return ERR_PTR(err);
604 }
605
606 init_attr->cap.max_send_wr = qp->sq.max;
607 init_attr->cap.max_recv_wr = qp->rq.max;
608 init_attr->cap.max_send_sge = qp->sq.max_gs;
609 init_attr->cap.max_recv_sge = qp->rq.max_gs;
610 init_attr->cap.max_inline_data = qp->max_inline_data;
611
612 return &qp->ibqp;
613 }
614
615 static int mthca_destroy_qp(struct ib_qp *qp)
616 {
617 if (qp->uobject) {
618 mthca_unmap_user_db(to_mdev(qp->device),
619 &to_mucontext(qp->uobject->context)->uar,
620 to_mucontext(qp->uobject->context)->db_tab,
621 to_mqp(qp)->sq.db_index);
622 mthca_unmap_user_db(to_mdev(qp->device),
623 &to_mucontext(qp->uobject->context)->uar,
624 to_mucontext(qp->uobject->context)->db_tab,
625 to_mqp(qp)->rq.db_index);
626 }
627 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
628 kfree(qp);
629 return 0;
630 }
631
632 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
633 struct ib_ucontext *context,
634 struct ib_udata *udata)
635 {
636 struct mthca_create_cq ucmd;
637 struct mthca_cq *cq;
638 int nent;
639 int err;
640
641 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
642 return ERR_PTR(-EINVAL);
643
644 if (context) {
645 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
646 return ERR_PTR(-EFAULT);
647
648 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
649 to_mucontext(context)->db_tab,
650 ucmd.set_db_index, ucmd.set_db_page);
651 if (err)
652 return ERR_PTR(err);
653
654 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
655 to_mucontext(context)->db_tab,
656 ucmd.arm_db_index, ucmd.arm_db_page);
657 if (err)
658 goto err_unmap_set;
659 }
660
661 cq = kmalloc(sizeof *cq, GFP_KERNEL);
662 if (!cq) {
663 err = -ENOMEM;
664 goto err_unmap_arm;
665 }
666
667 if (context) {
668 cq->mr.ibmr.lkey = ucmd.lkey;
669 cq->set_ci_db_index = ucmd.set_db_index;
670 cq->arm_db_index = ucmd.arm_db_index;
671 }
672
673 for (nent = 1; nent <= entries; nent <<= 1)
674 ; /* nothing */
675
676 err = mthca_init_cq(to_mdev(ibdev), nent,
677 context ? to_mucontext(context) : NULL,
678 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
679 cq);
680 if (err)
681 goto err_free;
682
683 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
684 mthca_free_cq(to_mdev(ibdev), cq);
685 goto err_free;
686 }
687
688 return &cq->ibcq;
689
690 err_free:
691 kfree(cq);
692
693 err_unmap_arm:
694 if (context)
695 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
696 to_mucontext(context)->db_tab, ucmd.arm_db_index);
697
698 err_unmap_set:
699 if (context)
700 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
701 to_mucontext(context)->db_tab, ucmd.set_db_index);
702
703 return ERR_PTR(err);
704 }
705
706 static int mthca_destroy_cq(struct ib_cq *cq)
707 {
708 if (cq->uobject) {
709 mthca_unmap_user_db(to_mdev(cq->device),
710 &to_mucontext(cq->uobject->context)->uar,
711 to_mucontext(cq->uobject->context)->db_tab,
712 to_mcq(cq)->arm_db_index);
713 mthca_unmap_user_db(to_mdev(cq->device),
714 &to_mucontext(cq->uobject->context)->uar,
715 to_mucontext(cq->uobject->context)->db_tab,
716 to_mcq(cq)->set_ci_db_index);
717 }
718 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
719 kfree(cq);
720
721 return 0;
722 }
723
724 static inline u32 convert_access(int acc)
725 {
726 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
727 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
728 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
729 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
730 MTHCA_MPT_FLAG_LOCAL_READ;
731 }
732
733 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
734 {
735 struct mthca_mr *mr;
736 int err;
737
738 mr = kmalloc(sizeof *mr, GFP_KERNEL);
739 if (!mr)
740 return ERR_PTR(-ENOMEM);
741
742 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
743 to_mpd(pd)->pd_num,
744 convert_access(acc), mr);
745
746 if (err) {
747 kfree(mr);
748 return ERR_PTR(err);
749 }
750
751 return &mr->ibmr;
752 }
753
754 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
755 struct ib_phys_buf *buffer_list,
756 int num_phys_buf,
757 int acc,
758 u64 *iova_start)
759 {
760 struct mthca_mr *mr;
761 u64 *page_list;
762 u64 total_size;
763 u64 mask;
764 int shift;
765 int npages;
766 int err;
767 int i, j, n;
768
769 /* First check that we have enough alignment */
770 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
771 return ERR_PTR(-EINVAL);
772
773 mask = 0;
774 total_size = 0;
775 for (i = 0; i < num_phys_buf; ++i) {
776 if (i != 0)
777 mask |= buffer_list[i].addr;
778 if (i != num_phys_buf - 1)
779 mask |= buffer_list[i].addr + buffer_list[i].size;
780
781 total_size += buffer_list[i].size;
782 }
783
784 if (mask & ~PAGE_MASK)
785 return ERR_PTR(-EINVAL);
786
787 /* Find largest page shift we can use to cover buffers */
788 for (shift = PAGE_SHIFT; shift < 31; ++shift)
789 if (num_phys_buf > 1) {
790 if ((1ULL << shift) & mask)
791 break;
792 } else {
793 if (1ULL << shift >=
794 buffer_list[0].size +
795 (buffer_list[0].addr & ((1ULL << shift) - 1)))
796 break;
797 }
798
799 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
800 buffer_list[0].addr &= ~0ull << shift;
801
802 mr = kmalloc(sizeof *mr, GFP_KERNEL);
803 if (!mr)
804 return ERR_PTR(-ENOMEM);
805
806 npages = 0;
807 for (i = 0; i < num_phys_buf; ++i)
808 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
809
810 if (!npages)
811 return &mr->ibmr;
812
813 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
814 if (!page_list) {
815 kfree(mr);
816 return ERR_PTR(-ENOMEM);
817 }
818
819 n = 0;
820 for (i = 0; i < num_phys_buf; ++i)
821 for (j = 0;
822 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
823 ++j)
824 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
825
826 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
827 "in PD %x; shift %d, npages %d.\n",
828 (unsigned long long) buffer_list[0].addr,
829 (unsigned long long) *iova_start,
830 to_mpd(pd)->pd_num,
831 shift, npages);
832
833 err = mthca_mr_alloc_phys(to_mdev(pd->device),
834 to_mpd(pd)->pd_num,
835 page_list, shift, npages,
836 *iova_start, total_size,
837 convert_access(acc), mr);
838
839 if (err) {
840 kfree(page_list);
841 kfree(mr);
842 return ERR_PTR(err);
843 }
844
845 kfree(page_list);
846 return &mr->ibmr;
847 }
848
849 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
850 int acc, struct ib_udata *udata)
851 {
852 struct mthca_dev *dev = to_mdev(pd->device);
853 struct ib_umem_chunk *chunk;
854 struct mthca_mr *mr;
855 u64 *pages;
856 int shift, n, len;
857 int i, j, k;
858 int err = 0;
859
860 shift = ffs(region->page_size) - 1;
861
862 mr = kmalloc(sizeof *mr, GFP_KERNEL);
863 if (!mr)
864 return ERR_PTR(-ENOMEM);
865
866 n = 0;
867 list_for_each_entry(chunk, &region->chunk_list, list)
868 n += chunk->nents;
869
870 mr->mtt = mthca_alloc_mtt(dev, n);
871 if (IS_ERR(mr->mtt)) {
872 err = PTR_ERR(mr->mtt);
873 goto err;
874 }
875
876 pages = (u64 *) __get_free_page(GFP_KERNEL);
877 if (!pages) {
878 err = -ENOMEM;
879 goto err_mtt;
880 }
881
882 i = n = 0;
883
884 list_for_each_entry(chunk, &region->chunk_list, list)
885 for (j = 0; j < chunk->nmap; ++j) {
886 len = sg_dma_len(&chunk->page_list[j]) >> shift;
887 for (k = 0; k < len; ++k) {
888 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
889 region->page_size * k;
890 /*
891 * Be friendly to WRITE_MTT command
892 * and leave two empty slots for the
893 * index and reserved fields of the
894 * mailbox.
895 */
896 if (i == PAGE_SIZE / sizeof (u64) - 2) {
897 err = mthca_write_mtt(dev, mr->mtt,
898 n, pages, i);
899 if (err)
900 goto mtt_done;
901 n += i;
902 i = 0;
903 }
904 }
905 }
906
907 if (i)
908 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
909 mtt_done:
910 free_page((unsigned long) pages);
911 if (err)
912 goto err_mtt;
913
914 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
915 region->length, convert_access(acc), mr);
916
917 if (err)
918 goto err_mtt;
919
920 return &mr->ibmr;
921
922 err_mtt:
923 mthca_free_mtt(dev, mr->mtt);
924
925 err:
926 kfree(mr);
927 return ERR_PTR(err);
928 }
929
930 static int mthca_dereg_mr(struct ib_mr *mr)
931 {
932 struct mthca_mr *mmr = to_mmr(mr);
933 mthca_free_mr(to_mdev(mr->device), mmr);
934 kfree(mmr);
935 return 0;
936 }
937
938 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
939 struct ib_fmr_attr *fmr_attr)
940 {
941 struct mthca_fmr *fmr;
942 int err;
943
944 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
945 if (!fmr)
946 return ERR_PTR(-ENOMEM);
947
948 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
949 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
950 convert_access(mr_access_flags), fmr);
951
952 if (err) {
953 kfree(fmr);
954 return ERR_PTR(err);
955 }
956
957 return &fmr->ibmr;
958 }
959
960 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
961 {
962 struct mthca_fmr *mfmr = to_mfmr(fmr);
963 int err;
964
965 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
966 if (err)
967 return err;
968
969 kfree(mfmr);
970 return 0;
971 }
972
973 static int mthca_unmap_fmr(struct list_head *fmr_list)
974 {
975 struct ib_fmr *fmr;
976 int err;
977 u8 status;
978 struct mthca_dev *mdev = NULL;
979
980 list_for_each_entry(fmr, fmr_list, list) {
981 if (mdev && to_mdev(fmr->device) != mdev)
982 return -EINVAL;
983 mdev = to_mdev(fmr->device);
984 }
985
986 if (!mdev)
987 return 0;
988
989 if (mthca_is_memfree(mdev)) {
990 list_for_each_entry(fmr, fmr_list, list)
991 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
992
993 wmb();
994 } else
995 list_for_each_entry(fmr, fmr_list, list)
996 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
997
998 err = mthca_SYNC_TPT(mdev, &status);
999 if (err)
1000 return err;
1001 if (status)
1002 return -EINVAL;
1003 return 0;
1004 }
1005
1006 static ssize_t show_rev(struct class_device *cdev, char *buf)
1007 {
1008 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1009 return sprintf(buf, "%x\n", dev->rev_id);
1010 }
1011
1012 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1013 {
1014 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1015 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1016 (int) (dev->fw_ver >> 16) & 0xffff,
1017 (int) dev->fw_ver & 0xffff);
1018 }
1019
1020 static ssize_t show_hca(struct class_device *cdev, char *buf)
1021 {
1022 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1023 switch (dev->pdev->device) {
1024 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1025 return sprintf(buf, "MT23108\n");
1026 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1027 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1028 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1029 return sprintf(buf, "MT25208\n");
1030 case PCI_DEVICE_ID_MELLANOX_SINAI:
1031 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1032 return sprintf(buf, "MT25204\n");
1033 default:
1034 return sprintf(buf, "unknown\n");
1035 }
1036 }
1037
1038 static ssize_t show_board(struct class_device *cdev, char *buf)
1039 {
1040 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1041 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1042 }
1043
1044 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1045 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1046 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1047 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1048
1049 static struct class_device_attribute *mthca_class_attributes[] = {
1050 &class_device_attr_hw_rev,
1051 &class_device_attr_fw_ver,
1052 &class_device_attr_hca_type,
1053 &class_device_attr_board_id
1054 };
1055
1056 static int mthca_init_node_data(struct mthca_dev *dev)
1057 {
1058 struct ib_smp *in_mad = NULL;
1059 struct ib_smp *out_mad = NULL;
1060 int err = -ENOMEM;
1061 u8 status;
1062
1063 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1064 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1065 if (!in_mad || !out_mad)
1066 goto out;
1067
1068 init_query_mad(in_mad);
1069 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1070
1071 err = mthca_MAD_IFC(dev, 1, 1,
1072 1, NULL, NULL, in_mad, out_mad,
1073 &status);
1074 if (err)
1075 goto out;
1076 if (status) {
1077 err = -EINVAL;
1078 goto out;
1079 }
1080
1081 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1082
1083 out:
1084 kfree(in_mad);
1085 kfree(out_mad);
1086 return err;
1087 }
1088
1089 int mthca_register_device(struct mthca_dev *dev)
1090 {
1091 int ret;
1092 int i;
1093
1094 ret = mthca_init_node_data(dev);
1095 if (ret)
1096 return ret;
1097
1098 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1099 dev->ib_dev.owner = THIS_MODULE;
1100
1101 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1102 dev->ib_dev.uverbs_cmd_mask =
1103 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1104 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1105 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1106 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1107 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1108 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1109 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1110 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1111 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1112 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1113 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1114 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1115 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1116 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1117 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1118 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1119 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1120 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1121 dev->ib_dev.node_type = IB_NODE_CA;
1122 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1123 dev->ib_dev.dma_device = &dev->pdev->dev;
1124 dev->ib_dev.class_dev.dev = &dev->pdev->dev;
1125 dev->ib_dev.query_device = mthca_query_device;
1126 dev->ib_dev.query_port = mthca_query_port;
1127 dev->ib_dev.modify_port = mthca_modify_port;
1128 dev->ib_dev.query_pkey = mthca_query_pkey;
1129 dev->ib_dev.query_gid = mthca_query_gid;
1130 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1131 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1132 dev->ib_dev.mmap = mthca_mmap_uar;
1133 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1134 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1135 dev->ib_dev.create_ah = mthca_ah_create;
1136 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1137
1138 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1139 dev->ib_dev.create_srq = mthca_create_srq;
1140 dev->ib_dev.modify_srq = mthca_modify_srq;
1141 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1142
1143 if (mthca_is_memfree(dev))
1144 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1145 else
1146 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1147 }
1148
1149 dev->ib_dev.create_qp = mthca_create_qp;
1150 dev->ib_dev.modify_qp = mthca_modify_qp;
1151 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1152 dev->ib_dev.create_cq = mthca_create_cq;
1153 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1154 dev->ib_dev.poll_cq = mthca_poll_cq;
1155 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1156 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1157 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1158 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1159
1160 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1161 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1162 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1163 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1164 if (mthca_is_memfree(dev))
1165 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1166 else
1167 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1168 }
1169
1170 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1171 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1172 dev->ib_dev.process_mad = mthca_process_mad;
1173
1174 if (mthca_is_memfree(dev)) {
1175 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1176 dev->ib_dev.post_send = mthca_arbel_post_send;
1177 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1178 } else {
1179 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1180 dev->ib_dev.post_send = mthca_tavor_post_send;
1181 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1182 }
1183
1184 init_MUTEX(&dev->cap_mask_mutex);
1185
1186 ret = ib_register_device(&dev->ib_dev);
1187 if (ret)
1188 return ret;
1189
1190 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1191 ret = class_device_create_file(&dev->ib_dev.class_dev,
1192 mthca_class_attributes[i]);
1193 if (ret) {
1194 ib_unregister_device(&dev->ib_dev);
1195 return ret;
1196 }
1197 }
1198
1199 mthca_start_catas_poll(dev);
1200
1201 return 0;
1202 }
1203
1204 void mthca_unregister_device(struct mthca_dev *dev)
1205 {
1206 mthca_stop_catas_poll(dev);
1207 ib_unregister_device(&dev->ib_dev);
1208 }
Linux kernel - Deliverables
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