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IB/srp: Enable multiple connections to the same target
[deliverable/linux.git] / drivers / infiniband / hw / mthca / mthca_provider.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
cd4e8fb4 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4885bf64 4 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
2a1d9b7f
RD		 5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
1da177e4
LT		 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 *
cf311cd4 36 * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
1da177e4
LT		 37 */
38
a4d61e84 39#include <rdma/ib_smi.h>
883a99c7 40#include <rdma/ib_user_verbs.h>
53b8b3ff 41#include <linux/mm.h>
1da177e4
LT		 42
43#include "mthca_dev.h"
44#include "mthca_cmd.h"
5e0b537c
RD		 45#include "mthca_user.h"
46#include "mthca_memfree.h"
1da177e4 47
87635b71
RD		 48static 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
1da177e4
LT		 56static 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
105e50a5 66 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 67 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
68 if (!in_mad || !out_mad)
69 goto out;
70
a852092e 71 memset(props, 0, sizeof *props);
8cf2daf3 72
1da177e4
LT		 73 props->fw_ver = mdev->fw_ver;
74
87635b71
RD		 75 init_query_mad(in_mad);
76 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1da177e4
LT		 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
8cf2daf3 88 props->device_cap_flags = mdev->device_cap_flags;
97f52eb4 89 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
1da177e4 90 0xffffff;
97f52eb4 91 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
a1c337af 92 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
1da177e4 93 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
1da177e4 94
8cf2daf3 95 props->max_mr_size = ~0ull;
0f69ce1e 96 props->page_size_cap = mdev->limits.page_size_cap;
8cf2daf3 97 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
efaae8f7 98 props->max_qp_wr = mdev->limits.max_wqes;
8cf2daf3
RD		 99 props->max_sge = mdev->limits.max_sg;
100 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
efaae8f7 101 props->max_cqe = mdev->limits.max_cqes;
8cf2daf3
RD		 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;
efaae8f7
JM		 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;
59fef3b1 109 props->max_srq_sge = mdev->limits.max_srq_sge;
8cf2daf3 110 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
2fa5e2eb 111 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
33033b79 112 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
efaae8f7
JM		 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;
2fa5e2eb 116 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
efaae8f7 117 props->max_mcast_grp;
d4cb0784
OG		 118 /*
119 * If Sinai memory key optimization is being used, then only
120 * the 8-bit key portion will change. For other HCAs, the
121 * unused index bits will also be used for FMR remapping.
122 */
123 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
124 props->max_map_per_fmr = 255;
125 else
126 props->max_map_per_fmr =
127 (1 << (32 - long_log2(mdev->limits.num_mpts))) - 1;
8cf2daf3 128
1da177e4
LT		 129 err = 0;
130 out:
131 kfree(in_mad);
132 kfree(out_mad);
133 return err;
134}
135
136static int mthca_query_port(struct ib_device *ibdev,
137 u8 port, struct ib_port_attr *props)
138{
139 struct ib_smp *in_mad = NULL;
140 struct ib_smp *out_mad = NULL;
141 int err = -ENOMEM;
142 u8 status;
143
105e50a5 144 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 145 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
146 if (!in_mad || !out_mad)
147 goto out;
148
d1887ec2
RD		 149 memset(props, 0, sizeof *props);
150
87635b71
RD		 151 init_query_mad(in_mad);
152 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
153 in_mad->attr_mod = cpu_to_be32(port);
1da177e4
LT		 154
155 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
156 port, NULL, NULL, in_mad, out_mad,
157 &status);
158 if (err)
159 goto out;
160 if (status) {
161 err = -EINVAL;
162 goto out;
163 }
164
97f52eb4 165 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
1da177e4 166 props->lmc = out_mad->data[34] & 0x7;
97f52eb4 167 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
1da177e4
LT		 168 props->sm_sl = out_mad->data[36] & 0xf;
169 props->state = out_mad->data[32] & 0xf;
170 props->phys_state = out_mad->data[33] >> 4;
97f52eb4 171 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
1da177e4 172 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
d1887ec2 173 props->max_msg_sz = 0x80000000;
1da177e4 174 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
9825051e 175 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
97f52eb4 176 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
1da177e4
LT		 177 props->active_width = out_mad->data[31] & 0xf;
178 props->active_speed = out_mad->data[35] >> 4;
9825051e
JM		 179 props->max_mtu = out_mad->data[41] & 0xf;
180 props->active_mtu = out_mad->data[36] >> 4;
181 props->subnet_timeout = out_mad->data[51] & 0x1f;
1da177e4
LT		 182
183 out:
184 kfree(in_mad);
185 kfree(out_mad);
186 return err;
187}
188
6dfc3901
RD		 189static int mthca_modify_device(struct ib_device *ibdev,
190 int mask,
191 struct ib_device_modify *props)
192{
193 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
194 return -EOPNOTSUPP;
195
196 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
197 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
198 return -ERESTARTSYS;
199 memcpy(ibdev->node_desc, props->node_desc, 64);
200 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
201 }
202
203 return 0;
204}
205
1da177e4
LT		 206static int mthca_modify_port(struct ib_device *ibdev,
207 u8 port, int port_modify_mask,
208 struct ib_port_modify *props)
209{
210 struct mthca_set_ib_param set_ib;
211 struct ib_port_attr attr;
212 int err;
213 u8 status;
214
fd9cfdd1 215 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
1da177e4
LT		 216 return -ERESTARTSYS;
217
218 err = mthca_query_port(ibdev, port, &attr);
219 if (err)
220 goto out;
221
222 set_ib.set_si_guid = 0;
223 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
224
225 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
226 ~props->clr_port_cap_mask;
227
228 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
229 if (err)
230 goto out;
231 if (status) {
232 err = -EINVAL;
233 goto out;
234 }
235
236out:
fd9cfdd1 237 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1da177e4
LT		 238 return err;
239}
240
241static int mthca_query_pkey(struct ib_device *ibdev,
242 u8 port, u16 index, u16 *pkey)
243{
244 struct ib_smp *in_mad = NULL;
245 struct ib_smp *out_mad = NULL;
246 int err = -ENOMEM;
247 u8 status;
248
105e50a5 249 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 250 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
251 if (!in_mad || !out_mad)
252 goto out;
253
87635b71
RD		 254 init_query_mad(in_mad);
255 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
256 in_mad->attr_mod = cpu_to_be32(index / 32);
1da177e4
LT		 257
258 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
259 port, NULL, NULL, in_mad, out_mad,
260 &status);
261 if (err)
262 goto out;
263 if (status) {
264 err = -EINVAL;
265 goto out;
266 }
267
97f52eb4 268 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
1da177e4
LT		 269
270 out:
271 kfree(in_mad);
272 kfree(out_mad);
273 return err;
274}
275
276static int mthca_query_gid(struct ib_device *ibdev, u8 port,
277 int index, union ib_gid *gid)
278{
279 struct ib_smp *in_mad = NULL;
280 struct ib_smp *out_mad = NULL;
281 int err = -ENOMEM;
282 u8 status;
283
105e50a5 284 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 285 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
286 if (!in_mad || !out_mad)
287 goto out;
288
87635b71
RD		 289 init_query_mad(in_mad);
290 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
291 in_mad->attr_mod = cpu_to_be32(port);
1da177e4
LT		 292
293 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
294 port, NULL, NULL, in_mad, out_mad,
295 &status);
296 if (err)
297 goto out;
298 if (status) {
299 err = -EINVAL;
300 goto out;
301 }
302
303 memcpy(gid->raw, out_mad->data + 8, 8);
304
87635b71
RD		 305 init_query_mad(in_mad);
306 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
307 in_mad->attr_mod = cpu_to_be32(index / 8);
1da177e4
LT		 308
309 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
310 port, NULL, NULL, in_mad, out_mad,
311 &status);
312 if (err)
313 goto out;
314 if (status) {
315 err = -EINVAL;
316 goto out;
317 }
318
254abfd3 319 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
1da177e4
LT		 320
321 out:
322 kfree(in_mad);
323 kfree(out_mad);
324 return err;
325}
326
5e0b537c
RD		 327static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
328 struct ib_udata *udata)
329{
330 struct mthca_alloc_ucontext_resp uresp;
331 struct mthca_ucontext *context;
332 int err;
333
334 memset(&uresp, 0, sizeof uresp);
335
336 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
337 if (mthca_is_memfree(to_mdev(ibdev)))
338 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
339 else
340 uresp.uarc_size = 0;
341
342 context = kmalloc(sizeof *context, GFP_KERNEL);
343 if (!context)
344 return ERR_PTR(-ENOMEM);
345
346 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
347 if (err) {
348 kfree(context);
349 return ERR_PTR(err);
350 }
351
352 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
353 if (IS_ERR(context->db_tab)) {
354 err = PTR_ERR(context->db_tab);
355 mthca_uar_free(to_mdev(ibdev), &context->uar);
356 kfree(context);
357 return ERR_PTR(err);
358 }
359
360 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
361 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
362 mthca_uar_free(to_mdev(ibdev), &context->uar);
363 kfree(context);
364 return ERR_PTR(-EFAULT);
365 }
366
367 return &context->ibucontext;
368}
369
370static int mthca_dealloc_ucontext(struct ib_ucontext *context)
371{
372 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
373 to_mucontext(context)->db_tab);
374 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
375 kfree(to_mucontext(context));
376
377 return 0;
378}
379
53b8b3ff
RD		 380static int mthca_mmap_uar(struct ib_ucontext *context,
381 struct vm_area_struct *vma)
382{
383 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
384 return -EINVAL;
385
386 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
387
6d376756
MT		 388 if (io_remap_pfn_range(vma, vma->vm_start,
389 to_mucontext(context)->uar.pfn,
390 PAGE_SIZE, vma->vm_page_prot))
53b8b3ff
RD		 391 return -EAGAIN;
392
393 return 0;
394}
395
1cf296b6
RD		 396static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
397 struct ib_ucontext *context,
398 struct ib_udata *udata)
1da177e4
LT		 399{
400 struct mthca_pd *pd;
401 int err;
402
403 pd = kmalloc(sizeof *pd, GFP_KERNEL);
404 if (!pd)
405 return ERR_PTR(-ENOMEM);
406
99264c1e 407 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
1da177e4
LT		 408 if (err) {
409 kfree(pd);
410 return ERR_PTR(err);
411 }
412
99264c1e
RD		 413 if (context) {
414 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
415 mthca_pd_free(to_mdev(ibdev), pd);
416 kfree(pd);
417 return ERR_PTR(-EFAULT);
418 }
419 }
420
1da177e4
LT		 421 return &pd->ibpd;
422}
423
424static int mthca_dealloc_pd(struct ib_pd *pd)
425{
426 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
427 kfree(pd);
428
429 return 0;
430}
431
432static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
433 struct ib_ah_attr *ah_attr)
434{
435 int err;
436 struct mthca_ah *ah;
437
8df8a34d 438 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
1da177e4
LT		 439 if (!ah)
440 return ERR_PTR(-ENOMEM);
441
442 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
443 if (err) {
444 kfree(ah);
445 return ERR_PTR(err);
446 }
447
448 return &ah->ibah;
449}
450
451static int mthca_ah_destroy(struct ib_ah *ah)
452{
453 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
454 kfree(ah);
455
456 return 0;
457}
458
ec34a922
RD		 459static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
460 struct ib_srq_init_attr *init_attr,
461 struct ib_udata *udata)
462{
463 struct mthca_create_srq ucmd;
464 struct mthca_ucontext *context = NULL;
465 struct mthca_srq *srq;
466 int err;
467
468 srq = kmalloc(sizeof *srq, GFP_KERNEL);
469 if (!srq)
470 return ERR_PTR(-ENOMEM);
471
472 if (pd->uobject) {
473 context = to_mucontext(pd->uobject->context);
474
17e2e819
JM		 475 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
476 err = -EFAULT;
477 goto err_free;
478 }
ec34a922
RD		 479
480 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
481 context->db_tab, ucmd.db_index,
482 ucmd.db_page);
483
484 if (err)
485 goto err_free;
486
487 srq->mr.ibmr.lkey = ucmd.lkey;
488 srq->db_index = ucmd.db_index;
489 }
490
491 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
492 &init_attr->attr, srq);
493
494 if (err && pd->uobject)
495 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
496 context->db_tab, ucmd.db_index);
497
498 if (err)
499 goto err_free;
500
501 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
502 mthca_free_srq(to_mdev(pd->device), srq);
503 err = -EFAULT;
504 goto err_free;
505 }
506
507 return &srq->ibsrq;
508
509err_free:
510 kfree(srq);
511
512 return ERR_PTR(err);
513}
514
515static int mthca_destroy_srq(struct ib_srq *srq)
516{
517 struct mthca_ucontext *context;
518
519 if (srq->uobject) {
520 context = to_mucontext(srq->uobject->context);
521
522 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
523 context->db_tab, to_msrq(srq)->db_index);
524 }
525
526 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
527 kfree(srq);
528
529 return 0;
530}
531
1da177e4 532static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
1cf296b6
RD		 533 struct ib_qp_init_attr *init_attr,
534 struct ib_udata *udata)
1da177e4 535{
80c8ec2c 536 struct mthca_create_qp ucmd;
1da177e4
LT		 537 struct mthca_qp *qp;
538 int err;
539
540 switch (init_attr->qp_type) {
541 case IB_QPT_RC:
542 case IB_QPT_UC:
543 case IB_QPT_UD:
544 {
80c8ec2c
RD		 545 struct mthca_ucontext *context;
546
1da177e4
LT		 547 qp = kmalloc(sizeof *qp, GFP_KERNEL);
548 if (!qp)
549 return ERR_PTR(-ENOMEM);
550
80c8ec2c
RD		 551 if (pd->uobject) {
552 context = to_mucontext(pd->uobject->context);
553
17e2e819
JM		 554 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
555 kfree(qp);
80c8ec2c 556 return ERR_PTR(-EFAULT);
17e2e819 557 }
80c8ec2c
RD		 558
559 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
560 context->db_tab,
561 ucmd.sq_db_index, ucmd.sq_db_page);
562 if (err) {
563 kfree(qp);
564 return ERR_PTR(err);
565 }
566
567 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
568 context->db_tab,
569 ucmd.rq_db_index, ucmd.rq_db_page);
570 if (err) {
571 mthca_unmap_user_db(to_mdev(pd->device),
572 &context->uar,
573 context->db_tab,
574 ucmd.sq_db_index);
575 kfree(qp);
576 return ERR_PTR(err);
577 }
578
579 qp->mr.ibmr.lkey = ucmd.lkey;
580 qp->sq.db_index = ucmd.sq_db_index;
581 qp->rq.db_index = ucmd.rq_db_index;
582 }
1da177e4
LT		 583
584 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
585 to_mcq(init_attr->send_cq),
586 to_mcq(init_attr->recv_cq),
587 init_attr->qp_type, init_attr->sq_sig_type,
80c8ec2c
RD		 588 &init_attr->cap, qp);
589
590 if (err && pd->uobject) {
591 context = to_mucontext(pd->uobject->context);
592
593 mthca_unmap_user_db(to_mdev(pd->device),
594 &context->uar,
595 context->db_tab,
596 ucmd.sq_db_index);
597 mthca_unmap_user_db(to_mdev(pd->device),
598 &context->uar,
599 context->db_tab,
600 ucmd.rq_db_index);
601 }
602
1da177e4
LT		 603 qp->ibqp.qp_num = qp->qpn;
604 break;
605 }
606 case IB_QPT_SMI:
607 case IB_QPT_GSI:
608 {
80c8ec2c
RD		 609 /* Don't allow userspace to create special QPs */
610 if (pd->uobject)
611 return ERR_PTR(-EINVAL);
612
1da177e4
LT		 613 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
614 if (!qp)
615 return ERR_PTR(-ENOMEM);
616
1da177e4
LT		 617 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
618
619 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
620 to_mcq(init_attr->send_cq),
621 to_mcq(init_attr->recv_cq),
80c8ec2c 622 init_attr->sq_sig_type, &init_attr->cap,
1da177e4
LT		 623 qp->ibqp.qp_num, init_attr->port_num,
624 to_msqp(qp));
625 break;
626 }
627 default:
628 /* Don't support raw QPs */
629 return ERR_PTR(-ENOSYS);
630 }
631
632 if (err) {
633 kfree(qp);
634 return ERR_PTR(err);
635 }
636
80c8ec2c
RD		 637 init_attr->cap.max_send_wr = qp->sq.max;
638 init_attr->cap.max_recv_wr = qp->rq.max;
639 init_attr->cap.max_send_sge = qp->sq.max_gs;
640 init_attr->cap.max_recv_sge = qp->rq.max_gs;
77369ed3 641 init_attr->cap.max_inline_data = qp->max_inline_data;
1da177e4
LT		 642
643 return &qp->ibqp;
644}
645
646static int mthca_destroy_qp(struct ib_qp *qp)
647{
80c8ec2c
RD		 648 if (qp->uobject) {
649 mthca_unmap_user_db(to_mdev(qp->device),
650 &to_mucontext(qp->uobject->context)->uar,
651 to_mucontext(qp->uobject->context)->db_tab,
652 to_mqp(qp)->sq.db_index);
653 mthca_unmap_user_db(to_mdev(qp->device),
654 &to_mucontext(qp->uobject->context)->uar,
655 to_mucontext(qp->uobject->context)->db_tab,
656 to_mqp(qp)->rq.db_index);
657 }
1da177e4
LT		 658 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
659 kfree(qp);
660 return 0;
661}
662
1cf296b6
RD		 663static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
664 struct ib_ucontext *context,
665 struct ib_udata *udata)
1da177e4 666{
74c2174e 667 struct mthca_create_cq ucmd;
1da177e4
LT		 668 struct mthca_cq *cq;
669 int nent;
670 int err;
671
efaae8f7
JM		 672 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
673 return ERR_PTR(-EINVAL);
674
74c2174e
RD		 675 if (context) {
676 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
677 return ERR_PTR(-EFAULT);
678
679 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
680 to_mucontext(context)->db_tab,
681 ucmd.set_db_index, ucmd.set_db_page);
682 if (err)
683 return ERR_PTR(err);
684
685 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
686 to_mucontext(context)->db_tab,
687 ucmd.arm_db_index, ucmd.arm_db_page);
688 if (err)
689 goto err_unmap_set;
690 }
691
1da177e4 692 cq = kmalloc(sizeof *cq, GFP_KERNEL);
74c2174e
RD		 693 if (!cq) {
694 err = -ENOMEM;
695 goto err_unmap_arm;
696 }
697
698 if (context) {
4885bf64
RD		 699 cq->buf.mr.ibmr.lkey = ucmd.lkey;
700 cq->set_ci_db_index = ucmd.set_db_index;
701 cq->arm_db_index = ucmd.arm_db_index;
74c2174e 702 }
1da177e4
LT		 703
704 for (nent = 1; nent <= entries; nent <<= 1)
705 ; /* nothing */
706
74c2174e
RD		 707 err = mthca_init_cq(to_mdev(ibdev), nent,
708 context ? to_mucontext(context) : NULL,
709 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
710 cq);
711 if (err)
712 goto err_free;
713
714 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
715 mthca_free_cq(to_mdev(ibdev), cq);
716 goto err_free;
1da177e4
LT		 717 }
718
4885bf64
RD		 719 cq->resize_buf = NULL;
720
1da177e4 721 return &cq->ibcq;
74c2174e
RD		 722
723err_free:
724 kfree(cq);
725
726err_unmap_arm:
727 if (context)
728 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
729 to_mucontext(context)->db_tab, ucmd.arm_db_index);
730
731err_unmap_set:
732 if (context)
733 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
734 to_mucontext(context)->db_tab, ucmd.set_db_index);
735
736 return ERR_PTR(err);
1da177e4
LT		 737}
738
4885bf64
RD		 739static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
740 int entries)
741{
742 int ret;
743
744 spin_lock_irq(&cq->lock);
745 if (cq->resize_buf) {
746 ret = -EBUSY;
747 goto unlock;
748 }
749
750 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
751 if (!cq->resize_buf) {
752 ret = -ENOMEM;
753 goto unlock;
754 }
755
756 cq->resize_buf->state = CQ_RESIZE_ALLOC;
757
758 ret = 0;
759
760unlock:
761 spin_unlock_irq(&cq->lock);
762
763 if (ret)
764 return ret;
765
766 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
767 if (ret) {
768 spin_lock_irq(&cq->lock);
769 kfree(cq->resize_buf);
770 cq->resize_buf = NULL;
771 spin_unlock_irq(&cq->lock);
772 return ret;
773 }
774
775 cq->resize_buf->cqe = entries - 1;
776
777 spin_lock_irq(&cq->lock);
778 cq->resize_buf->state = CQ_RESIZE_READY;
779 spin_unlock_irq(&cq->lock);
780
781 return 0;
782}
783
784static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
785{
786 struct mthca_dev *dev = to_mdev(ibcq->device);
787 struct mthca_cq *cq = to_mcq(ibcq);
788 struct mthca_resize_cq ucmd;
789 u32 lkey;
790 u8 status;
791 int ret;
792
793 if (entries < 1 || entries > dev->limits.max_cqes)
794 return -EINVAL;
795
c93b6fba
RD		 796 mutex_lock(&cq->mutex);
797
4885bf64 798 entries = roundup_pow_of_two(entries + 1);
c93b6fba
RD		 799 if (entries == ibcq->cqe + 1) {
800 ret = 0;
801 goto out;
802 }
4885bf64
RD		 803
804 if (cq->is_kernel) {
805 ret = mthca_alloc_resize_buf(dev, cq, entries);
806 if (ret)
c93b6fba 807 goto out;
4885bf64
RD		 808 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
809 } else {
c93b6fba
RD		 810 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
811 ret = -EFAULT;
812 goto out;
813 }
4885bf64
RD		 814 lkey = ucmd.lkey;
815 }
816
817 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, long_log2(entries), &status);
818 if (status)
819 ret = -EINVAL;
820
821 if (ret) {
822 if (cq->resize_buf) {
823 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
824 cq->resize_buf->cqe);
825 kfree(cq->resize_buf);
826 spin_lock_irq(&cq->lock);
827 cq->resize_buf = NULL;
828 spin_unlock_irq(&cq->lock);
829 }
c93b6fba 830 goto out;
4885bf64
RD		 831 }
832
833 if (cq->is_kernel) {
834 struct mthca_cq_buf tbuf;
835 int tcqe;
836
837 spin_lock_irq(&cq->lock);
838 if (cq->resize_buf->state == CQ_RESIZE_READY) {
839 mthca_cq_resize_copy_cqes(cq);
840 tbuf = cq->buf;
841 tcqe = cq->ibcq.cqe;
842 cq->buf = cq->resize_buf->buf;
843 cq->ibcq.cqe = cq->resize_buf->cqe;
844 } else {
845 tbuf = cq->resize_buf->buf;
846 tcqe = cq->resize_buf->cqe;
847 }
848
849 kfree(cq->resize_buf);
850 cq->resize_buf = NULL;
851 spin_unlock_irq(&cq->lock);
852
853 mthca_free_cq_buf(dev, &tbuf, tcqe);
854 } else
855 ibcq->cqe = entries - 1;
856
c93b6fba
RD		 857out:
858 mutex_unlock(&cq->mutex);
859
860 return ret;
4885bf64
RD		 861}
862
1da177e4
LT		 863static int mthca_destroy_cq(struct ib_cq *cq)
864{
74c2174e
RD		 865 if (cq->uobject) {
866 mthca_unmap_user_db(to_mdev(cq->device),
867 &to_mucontext(cq->uobject->context)->uar,
868 to_mucontext(cq->uobject->context)->db_tab,
869 to_mcq(cq)->arm_db_index);
870 mthca_unmap_user_db(to_mdev(cq->device),
871 &to_mucontext(cq->uobject->context)->uar,
872 to_mucontext(cq->uobject->context)->db_tab,
873 to_mcq(cq)->set_ci_db_index);
874 }
1da177e4
LT		 875 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
876 kfree(cq);
877
878 return 0;
879}
880
881static inline u32 convert_access(int acc)
882{
883 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
884 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
885 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
886 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
887 MTHCA_MPT_FLAG_LOCAL_READ;
888}
889
890static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
891{
892 struct mthca_mr *mr;
893 int err;
894
895 mr = kmalloc(sizeof *mr, GFP_KERNEL);
896 if (!mr)
897 return ERR_PTR(-ENOMEM);
898
899 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
900 to_mpd(pd)->pd_num,
901 convert_access(acc), mr);
902
903 if (err) {
904 kfree(mr);
905 return ERR_PTR(err);
906 }
907
908 return &mr->ibmr;
909}
910
911static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
912 struct ib_phys_buf *buffer_list,
913 int num_phys_buf,
914 int acc,
915 u64 *iova_start)
916{
917 struct mthca_mr *mr;
918 u64 *page_list;
919 u64 total_size;
920 u64 mask;
921 int shift;
922 int npages;
923 int err;
924 int i, j, n;
925
926 /* First check that we have enough alignment */
927 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
928 return ERR_PTR(-EINVAL);
929
1da177e4
LT		 930 mask = 0;
931 total_size = 0;
932 for (i = 0; i < num_phys_buf; ++i) {
6627fa66
MT		 933 if (i != 0)
934 mask |= buffer_list[i].addr;
935 if (i != num_phys_buf - 1)
936 mask |= buffer_list[i].addr + buffer_list[i].size;
1da177e4
LT		 937
938 total_size += buffer_list[i].size;
1da177e4
LT		 939 }
940
6627fa66
MT		 941 if (mask & ~PAGE_MASK)
942 return ERR_PTR(-EINVAL);
943
1da177e4
LT		 944 /* Find largest page shift we can use to cover buffers */
945 for (shift = PAGE_SHIFT; shift < 31; ++shift)
946 if (num_phys_buf > 1) {
947 if ((1ULL << shift) & mask)
948 break;
949 } else {
950 if (1ULL << shift >=
951 buffer_list[0].size +
952 (buffer_list[0].addr & ((1ULL << shift) - 1)))
953 break;
954 }
955
956 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
957 buffer_list[0].addr &= ~0ull << shift;
958
959 mr = kmalloc(sizeof *mr, GFP_KERNEL);
960 if (!mr)
961 return ERR_PTR(-ENOMEM);
962
963 npages = 0;
964 for (i = 0; i < num_phys_buf; ++i)
965 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
966
967 if (!npages)
968 return &mr->ibmr;
969
970 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
971 if (!page_list) {
972 kfree(mr);
973 return ERR_PTR(-ENOMEM);
974 }
975
976 n = 0;
977 for (i = 0; i < num_phys_buf; ++i)
978 for (j = 0;
979 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
980 ++j)
981 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
982
983 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
984 "in PD %x; shift %d, npages %d.\n",
985 (unsigned long long) buffer_list[0].addr,
986 (unsigned long long) *iova_start,
987 to_mpd(pd)->pd_num,
988 shift, npages);
989
990 err = mthca_mr_alloc_phys(to_mdev(pd->device),
991 to_mpd(pd)->pd_num,
992 page_list, shift, npages,
993 *iova_start, total_size,
994 convert_access(acc), mr);
995
996 if (err) {
761f9eb8 997 kfree(page_list);
1da177e4
LT		 998 kfree(mr);
999 return ERR_PTR(err);
1000 }
1001
1002 kfree(page_list);
1003 return &mr->ibmr;
1004}
1005
24d4281b
RD		 1006static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
1007 int acc, struct ib_udata *udata)
1008{
1009 struct mthca_dev *dev = to_mdev(pd->device);
1010 struct ib_umem_chunk *chunk;
1011 struct mthca_mr *mr;
1012 u64 *pages;
1013 int shift, n, len;
1014 int i, j, k;
1015 int err = 0;
1016
1017 shift = ffs(region->page_size) - 1;
1018
1019 mr = kmalloc(sizeof *mr, GFP_KERNEL);
1020 if (!mr)
1021 return ERR_PTR(-ENOMEM);
1022
1023 n = 0;
1024 list_for_each_entry(chunk, &region->chunk_list, list)
1025 n += chunk->nents;
1026
1027 mr->mtt = mthca_alloc_mtt(dev, n);
1028 if (IS_ERR(mr->mtt)) {
1029 err = PTR_ERR(mr->mtt);
1030 goto err;
1031 }
1032
1033 pages = (u64 *) __get_free_page(GFP_KERNEL);
1034 if (!pages) {
1035 err = -ENOMEM;
1036 goto err_mtt;
1037 }
1038
1039 i = n = 0;
1040
1041 list_for_each_entry(chunk, &region->chunk_list, list)
1042 for (j = 0; j < chunk->nmap; ++j) {
1043 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1044 for (k = 0; k < len; ++k) {
1045 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1046 region->page_size * k;
1047 /*
1048 * Be friendly to WRITE_MTT command
1049 * and leave two empty slots for the
1050 * index and reserved fields of the
1051 * mailbox.
1052 */
1053 if (i == PAGE_SIZE / sizeof (u64) - 2) {
1054 err = mthca_write_mtt(dev, mr->mtt,
1055 n, pages, i);
1056 if (err)
1057 goto mtt_done;
1058 n += i;
1059 i = 0;
1060 }
1061 }
1062 }
1063
1064 if (i)
1065 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1066mtt_done:
1067 free_page((unsigned long) pages);
1068 if (err)
1069 goto err_mtt;
1070
1071 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
1072 region->length, convert_access(acc), mr);
1073
1074 if (err)
1075 goto err_mtt;
1076
1077 return &mr->ibmr;
1078
1079err_mtt:
1080 mthca_free_mtt(dev, mr->mtt);
1081
1082err:
1083 kfree(mr);
1084 return ERR_PTR(err);
1085}
1086
1da177e4
LT		 1087static int mthca_dereg_mr(struct ib_mr *mr)
1088{
e464b2a6
RD		 1089 struct mthca_mr *mmr = to_mmr(mr);
1090 mthca_free_mr(to_mdev(mr->device), mmr);
1091 kfree(mmr);
1da177e4
LT		 1092 return 0;
1093}
1094
e0f5fdca
MT		 1095static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1096 struct ib_fmr_attr *fmr_attr)
1097{
1098 struct mthca_fmr *fmr;
1099 int err;
1100
1101 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1102 if (!fmr)
1103 return ERR_PTR(-ENOMEM);
1104
1105 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1106 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1107 convert_access(mr_access_flags), fmr);
1108
1109 if (err) {
1110 kfree(fmr);
1111 return ERR_PTR(err);
1112 }
1113
1114 return &fmr->ibmr;
1115}
1116
1117static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1118{
1119 struct mthca_fmr *mfmr = to_mfmr(fmr);
1120 int err;
1121
1122 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1123 if (err)
1124 return err;
1125
1126 kfree(mfmr);
1127 return 0;
1128}
1129
1130static int mthca_unmap_fmr(struct list_head *fmr_list)
1131{
1132 struct ib_fmr *fmr;
1133 int err;
1134 u8 status;
1135 struct mthca_dev *mdev = NULL;
1136
1137 list_for_each_entry(fmr, fmr_list, list) {
1138 if (mdev && to_mdev(fmr->device) != mdev)
1139 return -EINVAL;
1140 mdev = to_mdev(fmr->device);
1141 }
1142
1143 if (!mdev)
1144 return 0;
1145
d10ddbf6 1146 if (mthca_is_memfree(mdev)) {
e0f5fdca
MT		 1147 list_for_each_entry(fmr, fmr_list, list)
1148 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1149
1150 wmb();
1151 } else
1152 list_for_each_entry(fmr, fmr_list, list)
1153 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1154
1155 err = mthca_SYNC_TPT(mdev, &status);
1156 if (err)
1157 return err;
1158 if (status)
1159 return -EINVAL;
1160 return 0;
1161}
1162
1da177e4
LT		 1163static ssize_t show_rev(struct class_device *cdev, char *buf)
1164{
1165 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1166 return sprintf(buf, "%x\n", dev->rev_id);
1167}
1168
1169static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1170{
1171 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
87cfe323 1172 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1da177e4
LT		 1173 (int) (dev->fw_ver >> 16) & 0xffff,
1174 (int) dev->fw_ver & 0xffff);
1175}
1176
1177static ssize_t show_hca(struct class_device *cdev, char *buf)
1178{
1179 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
68a3c212
RD		 1180 switch (dev->pdev->device) {
1181 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1182 return sprintf(buf, "MT23108\n");
1183 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1184 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1185 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1186 return sprintf(buf, "MT25208\n");
1187 case PCI_DEVICE_ID_MELLANOX_SINAI:
1188 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1189 return sprintf(buf, "MT25204\n");
1190 default:
1191 return sprintf(buf, "unknown\n");
1da177e4
LT		 1192 }
1193}
1194
2e8b981c
MT		 1195static ssize_t show_board(struct class_device *cdev, char *buf)
1196{
1197 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1198 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1199}
1200
1da177e4
LT		 1201static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1202static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1203static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2e8b981c 1204static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1da177e4
LT		 1205
1206static struct class_device_attribute *mthca_class_attributes[] = {
1207 &class_device_attr_hw_rev,
1208 &class_device_attr_fw_ver,
2e8b981c
MT		 1209 &class_device_attr_hca_type,
1210 &class_device_attr_board_id
1da177e4
LT		 1211};
1212
cf311cd4
SH		 1213static int mthca_init_node_data(struct mthca_dev *dev)
1214{
1215 struct ib_smp *in_mad = NULL;
1216 struct ib_smp *out_mad = NULL;
1217 int err = -ENOMEM;
1218 u8 status;
1219
1220 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1221 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1222 if (!in_mad || !out_mad)
1223 goto out;
1224
1225 init_query_mad(in_mad);
6dfc3901
RD		 1226 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1227
1228 err = mthca_MAD_IFC(dev, 1, 1,
1229 1, NULL, NULL, in_mad, out_mad,
1230 &status);
1231 if (err)
1232 goto out;
1233 if (status) {
1234 err = -EINVAL;
1235 goto out;
1236 }
1237
1238 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1239
cf311cd4
SH		 1240 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1241
1242 err = mthca_MAD_IFC(dev, 1, 1,
1243 1, NULL, NULL, in_mad, out_mad,
1244 &status);
1245 if (err)
1246 goto out;
1247 if (status) {
1248 err = -EINVAL;
1249 goto out;
1250 }
1251
1252 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1253
1254out:
1255 kfree(in_mad);
1256 kfree(out_mad);
1257 return err;
1258}
1259
1da177e4
LT		 1260int mthca_register_device(struct mthca_dev *dev)
1261{
1262 int ret;
1263 int i;
1264
cf311cd4
SH		 1265 ret = mthca_init_node_data(dev);
1266 if (ret)
1267 return ret;
1268
1da177e4 1269 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1cf296b6
RD		 1270 dev->ib_dev.owner = THIS_MODULE;
1271
274c0891 1272 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
883a99c7
RD		 1273 dev->ib_dev.uverbs_cmd_mask =
1274 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1275 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1276 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1277 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1278 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1279 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1280 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1281 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1282 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
4885bf64 1283 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
883a99c7
RD		 1284 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1285 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
8ebe5077 1286 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
883a99c7
RD		 1287 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1288 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1289 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
5beba532 1290 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
07ebafba 1291 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1da177e4
LT		 1292 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1293 dev->ib_dev.dma_device = &dev->pdev->dev;
1294 dev->ib_dev.class_dev.dev = &dev->pdev->dev;
1295 dev->ib_dev.query_device = mthca_query_device;
1296 dev->ib_dev.query_port = mthca_query_port;
6dfc3901 1297 dev->ib_dev.modify_device = mthca_modify_device;
1da177e4
LT		 1298 dev->ib_dev.modify_port = mthca_modify_port;
1299 dev->ib_dev.query_pkey = mthca_query_pkey;
1300 dev->ib_dev.query_gid = mthca_query_gid;
5e0b537c
RD		 1301 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1302 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
53b8b3ff 1303 dev->ib_dev.mmap = mthca_mmap_uar;
1da177e4
LT		 1304 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1305 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1306 dev->ib_dev.create_ah = mthca_ah_create;
1d89b1ae 1307 dev->ib_dev.query_ah = mthca_ah_query;
1da177e4 1308 dev->ib_dev.destroy_ah = mthca_ah_destroy;
ec34a922
RD		 1309
1310 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1311 dev->ib_dev.create_srq = mthca_create_srq;
8ebe5077
EC		 1312 dev->ib_dev.modify_srq = mthca_modify_srq;
1313 dev->ib_dev.query_srq = mthca_query_srq;
ec34a922 1314 dev->ib_dev.destroy_srq = mthca_destroy_srq;
5beba532
RD		 1315 dev->ib_dev.uverbs_cmd_mask |=
1316 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1317 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1318 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1319 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
ec34a922
RD		 1320
1321 if (mthca_is_memfree(dev))
1322 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1323 else
1324 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1325 }
1326
1da177e4
LT		 1327 dev->ib_dev.create_qp = mthca_create_qp;
1328 dev->ib_dev.modify_qp = mthca_modify_qp;
8ebe5077 1329 dev->ib_dev.query_qp = mthca_query_qp;
1da177e4
LT		 1330 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1331 dev->ib_dev.create_cq = mthca_create_cq;
4885bf64 1332 dev->ib_dev.resize_cq = mthca_resize_cq;
1da177e4
LT		 1333 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1334 dev->ib_dev.poll_cq = mthca_poll_cq;
1335 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1336 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
24d4281b 1337 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1da177e4 1338 dev->ib_dev.dereg_mr = mthca_dereg_mr;
e0f5fdca
MT		 1339
1340 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1341 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1342 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1343 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
d10ddbf6 1344 if (mthca_is_memfree(dev))
e0f5fdca
MT		 1345 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1346 else
1347 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1348 }
1349
1da177e4
LT		 1350 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1351 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1352 dev->ib_dev.process_mad = mthca_process_mad;
1353
d10ddbf6 1354 if (mthca_is_memfree(dev)) {
1da177e4
LT		 1355 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1356 dev->ib_dev.post_send = mthca_arbel_post_send;
1357 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1358 } else {
1359 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1360 dev->ib_dev.post_send = mthca_tavor_post_send;
1361 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1362 }
1363
fd9cfdd1 1364 mutex_init(&dev->cap_mask_mutex);
1da177e4
LT		 1365
1366 ret = ib_register_device(&dev->ib_dev);
1367 if (ret)
1368 return ret;
1369
1370 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1371 ret = class_device_create_file(&dev->ib_dev.class_dev,
1372 mthca_class_attributes[i]);
1373 if (ret) {
1374 ib_unregister_device(&dev->ib_dev);
1375 return ret;
1376 }
1377 }
1378
3d155f8c
RD		 1379 mthca_start_catas_poll(dev);
1380
1da177e4
LT		 1381 return 0;
1382}
1383
1384void mthca_unregister_device(struct mthca_dev *dev)
1385{
3d155f8c 1386 mthca_stop_catas_poll(dev);
1da177e4
LT		 1387 ib_unregister_device(&dev->ib_dev);
1388}
Linux kernel - Deliverables
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