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[PATCH] LOG2: Implement a general integer log2 facility in the kernel
[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 =
f0d1b0b3 127 (1 << (32 - ilog2(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;
a8bf4e77
JM		 182 props->max_vl_num = out_mad->data[37] >> 4;
183 props->init_type_reply = out_mad->data[41] >> 4;
1da177e4
LT		 184
185 out:
186 kfree(in_mad);
187 kfree(out_mad);
188 return err;
189}
190
6dfc3901
RD		 191static int mthca_modify_device(struct ib_device *ibdev,
192 int mask,
193 struct ib_device_modify *props)
194{
195 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
196 return -EOPNOTSUPP;
197
198 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
199 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
200 return -ERESTARTSYS;
201 memcpy(ibdev->node_desc, props->node_desc, 64);
202 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
203 }
204
205 return 0;
206}
207
1da177e4
LT		 208static int mthca_modify_port(struct ib_device *ibdev,
209 u8 port, int port_modify_mask,
210 struct ib_port_modify *props)
211{
212 struct mthca_set_ib_param set_ib;
213 struct ib_port_attr attr;
214 int err;
215 u8 status;
216
fd9cfdd1 217 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
1da177e4
LT		 218 return -ERESTARTSYS;
219
220 err = mthca_query_port(ibdev, port, &attr);
221 if (err)
222 goto out;
223
224 set_ib.set_si_guid = 0;
225 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
226
227 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
228 ~props->clr_port_cap_mask;
229
230 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
231 if (err)
232 goto out;
233 if (status) {
234 err = -EINVAL;
235 goto out;
236 }
237
238out:
fd9cfdd1 239 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1da177e4
LT		 240 return err;
241}
242
243static int mthca_query_pkey(struct ib_device *ibdev,
244 u8 port, u16 index, u16 *pkey)
245{
246 struct ib_smp *in_mad = NULL;
247 struct ib_smp *out_mad = NULL;
248 int err = -ENOMEM;
249 u8 status;
250
105e50a5 251 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 252 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
253 if (!in_mad || !out_mad)
254 goto out;
255
87635b71
RD		 256 init_query_mad(in_mad);
257 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
258 in_mad->attr_mod = cpu_to_be32(index / 32);
1da177e4
LT		 259
260 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
261 port, NULL, NULL, in_mad, out_mad,
262 &status);
263 if (err)
264 goto out;
265 if (status) {
266 err = -EINVAL;
267 goto out;
268 }
269
97f52eb4 270 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
1da177e4
LT		 271
272 out:
273 kfree(in_mad);
274 kfree(out_mad);
275 return err;
276}
277
278static int mthca_query_gid(struct ib_device *ibdev, u8 port,
279 int index, union ib_gid *gid)
280{
281 struct ib_smp *in_mad = NULL;
282 struct ib_smp *out_mad = NULL;
283 int err = -ENOMEM;
284 u8 status;
285
105e50a5 286 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 287 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
288 if (!in_mad || !out_mad)
289 goto out;
290
87635b71
RD		 291 init_query_mad(in_mad);
292 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
293 in_mad->attr_mod = cpu_to_be32(port);
1da177e4
LT		 294
295 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
296 port, NULL, NULL, in_mad, out_mad,
297 &status);
298 if (err)
299 goto out;
300 if (status) {
301 err = -EINVAL;
302 goto out;
303 }
304
305 memcpy(gid->raw, out_mad->data + 8, 8);
306
87635b71
RD		 307 init_query_mad(in_mad);
308 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
309 in_mad->attr_mod = cpu_to_be32(index / 8);
1da177e4
LT		 310
311 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
312 port, NULL, NULL, in_mad, out_mad,
313 &status);
314 if (err)
315 goto out;
316 if (status) {
317 err = -EINVAL;
318 goto out;
319 }
320
254abfd3 321 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
1da177e4
LT		 322
323 out:
324 kfree(in_mad);
325 kfree(out_mad);
326 return err;
327}
328
5e0b537c
RD		 329static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
330 struct ib_udata *udata)
331{
332 struct mthca_alloc_ucontext_resp uresp;
333 struct mthca_ucontext *context;
334 int err;
335
336 memset(&uresp, 0, sizeof uresp);
337
338 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
339 if (mthca_is_memfree(to_mdev(ibdev)))
340 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
341 else
342 uresp.uarc_size = 0;
343
344 context = kmalloc(sizeof *context, GFP_KERNEL);
345 if (!context)
346 return ERR_PTR(-ENOMEM);
347
348 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
349 if (err) {
350 kfree(context);
351 return ERR_PTR(err);
352 }
353
354 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
355 if (IS_ERR(context->db_tab)) {
356 err = PTR_ERR(context->db_tab);
357 mthca_uar_free(to_mdev(ibdev), &context->uar);
358 kfree(context);
359 return ERR_PTR(err);
360 }
361
362 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
363 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
364 mthca_uar_free(to_mdev(ibdev), &context->uar);
365 kfree(context);
366 return ERR_PTR(-EFAULT);
367 }
368
369 return &context->ibucontext;
370}
371
372static int mthca_dealloc_ucontext(struct ib_ucontext *context)
373{
374 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
375 to_mucontext(context)->db_tab);
376 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
377 kfree(to_mucontext(context));
378
379 return 0;
380}
381
53b8b3ff
RD		 382static int mthca_mmap_uar(struct ib_ucontext *context,
383 struct vm_area_struct *vma)
384{
385 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
386 return -EINVAL;
387
388 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
389
6d376756
MT		 390 if (io_remap_pfn_range(vma, vma->vm_start,
391 to_mucontext(context)->uar.pfn,
392 PAGE_SIZE, vma->vm_page_prot))
53b8b3ff
RD		 393 return -EAGAIN;
394
395 return 0;
396}
397
1cf296b6
RD		 398static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
399 struct ib_ucontext *context,
400 struct ib_udata *udata)
1da177e4
LT		 401{
402 struct mthca_pd *pd;
403 int err;
404
405 pd = kmalloc(sizeof *pd, GFP_KERNEL);
406 if (!pd)
407 return ERR_PTR(-ENOMEM);
408
99264c1e 409 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
1da177e4
LT		 410 if (err) {
411 kfree(pd);
412 return ERR_PTR(err);
413 }
414
99264c1e
RD		 415 if (context) {
416 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
417 mthca_pd_free(to_mdev(ibdev), pd);
418 kfree(pd);
419 return ERR_PTR(-EFAULT);
420 }
421 }
422
1da177e4
LT		 423 return &pd->ibpd;
424}
425
426static int mthca_dealloc_pd(struct ib_pd *pd)
427{
428 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
429 kfree(pd);
430
431 return 0;
432}
433
434static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
435 struct ib_ah_attr *ah_attr)
436{
437 int err;
438 struct mthca_ah *ah;
439
8df8a34d 440 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
1da177e4
LT		 441 if (!ah)
442 return ERR_PTR(-ENOMEM);
443
444 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
445 if (err) {
446 kfree(ah);
447 return ERR_PTR(err);
448 }
449
450 return &ah->ibah;
451}
452
453static int mthca_ah_destroy(struct ib_ah *ah)
454{
455 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
456 kfree(ah);
457
458 return 0;
459}
460
ec34a922
RD		 461static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
462 struct ib_srq_init_attr *init_attr,
463 struct ib_udata *udata)
464{
465 struct mthca_create_srq ucmd;
466 struct mthca_ucontext *context = NULL;
467 struct mthca_srq *srq;
468 int err;
469
470 srq = kmalloc(sizeof *srq, GFP_KERNEL);
471 if (!srq)
472 return ERR_PTR(-ENOMEM);
473
474 if (pd->uobject) {
475 context = to_mucontext(pd->uobject->context);
476
17e2e819
JM		 477 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
478 err = -EFAULT;
479 goto err_free;
480 }
ec34a922
RD		 481
482 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
483 context->db_tab, ucmd.db_index,
484 ucmd.db_page);
485
486 if (err)
487 goto err_free;
488
489 srq->mr.ibmr.lkey = ucmd.lkey;
490 srq->db_index = ucmd.db_index;
491 }
492
493 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
494 &init_attr->attr, srq);
495
496 if (err && pd->uobject)
497 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
498 context->db_tab, ucmd.db_index);
499
500 if (err)
501 goto err_free;
502
503 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
504 mthca_free_srq(to_mdev(pd->device), srq);
505 err = -EFAULT;
506 goto err_free;
507 }
508
509 return &srq->ibsrq;
510
511err_free:
512 kfree(srq);
513
514 return ERR_PTR(err);
515}
516
517static int mthca_destroy_srq(struct ib_srq *srq)
518{
519 struct mthca_ucontext *context;
520
521 if (srq->uobject) {
522 context = to_mucontext(srq->uobject->context);
523
524 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
525 context->db_tab, to_msrq(srq)->db_index);
526 }
527
528 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
529 kfree(srq);
530
531 return 0;
532}
533
1da177e4 534static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
1cf296b6
RD		 535 struct ib_qp_init_attr *init_attr,
536 struct ib_udata *udata)
1da177e4 537{
80c8ec2c 538 struct mthca_create_qp ucmd;
1da177e4
LT		 539 struct mthca_qp *qp;
540 int err;
541
542 switch (init_attr->qp_type) {
543 case IB_QPT_RC:
544 case IB_QPT_UC:
545 case IB_QPT_UD:
546 {
80c8ec2c
RD		 547 struct mthca_ucontext *context;
548
1da177e4
LT		 549 qp = kmalloc(sizeof *qp, GFP_KERNEL);
550 if (!qp)
551 return ERR_PTR(-ENOMEM);
552
80c8ec2c
RD		 553 if (pd->uobject) {
554 context = to_mucontext(pd->uobject->context);
555
17e2e819
JM		 556 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
557 kfree(qp);
80c8ec2c 558 return ERR_PTR(-EFAULT);
17e2e819 559 }
80c8ec2c
RD		 560
561 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
562 context->db_tab,
563 ucmd.sq_db_index, ucmd.sq_db_page);
564 if (err) {
565 kfree(qp);
566 return ERR_PTR(err);
567 }
568
569 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
570 context->db_tab,
571 ucmd.rq_db_index, ucmd.rq_db_page);
572 if (err) {
573 mthca_unmap_user_db(to_mdev(pd->device),
574 &context->uar,
575 context->db_tab,
576 ucmd.sq_db_index);
577 kfree(qp);
578 return ERR_PTR(err);
579 }
580
581 qp->mr.ibmr.lkey = ucmd.lkey;
582 qp->sq.db_index = ucmd.sq_db_index;
583 qp->rq.db_index = ucmd.rq_db_index;
584 }
1da177e4
LT		 585
586 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
587 to_mcq(init_attr->send_cq),
588 to_mcq(init_attr->recv_cq),
589 init_attr->qp_type, init_attr->sq_sig_type,
80c8ec2c
RD		 590 &init_attr->cap, qp);
591
592 if (err && pd->uobject) {
593 context = to_mucontext(pd->uobject->context);
594
595 mthca_unmap_user_db(to_mdev(pd->device),
596 &context->uar,
597 context->db_tab,
598 ucmd.sq_db_index);
599 mthca_unmap_user_db(to_mdev(pd->device),
600 &context->uar,
601 context->db_tab,
602 ucmd.rq_db_index);
603 }
604
1da177e4
LT		 605 qp->ibqp.qp_num = qp->qpn;
606 break;
607 }
608 case IB_QPT_SMI:
609 case IB_QPT_GSI:
610 {
80c8ec2c
RD		 611 /* Don't allow userspace to create special QPs */
612 if (pd->uobject)
613 return ERR_PTR(-EINVAL);
614
1da177e4
LT		 615 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
616 if (!qp)
617 return ERR_PTR(-ENOMEM);
618
1da177e4
LT		 619 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
620
621 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
622 to_mcq(init_attr->send_cq),
623 to_mcq(init_attr->recv_cq),
80c8ec2c 624 init_attr->sq_sig_type, &init_attr->cap,
1da177e4
LT		 625 qp->ibqp.qp_num, init_attr->port_num,
626 to_msqp(qp));
627 break;
628 }
629 default:
630 /* Don't support raw QPs */
631 return ERR_PTR(-ENOSYS);
632 }
633
634 if (err) {
635 kfree(qp);
636 return ERR_PTR(err);
637 }
638
80c8ec2c
RD		 639 init_attr->cap.max_send_wr = qp->sq.max;
640 init_attr->cap.max_recv_wr = qp->rq.max;
641 init_attr->cap.max_send_sge = qp->sq.max_gs;
642 init_attr->cap.max_recv_sge = qp->rq.max_gs;
77369ed3 643 init_attr->cap.max_inline_data = qp->max_inline_data;
1da177e4
LT		 644
645 return &qp->ibqp;
646}
647
648static int mthca_destroy_qp(struct ib_qp *qp)
649{
80c8ec2c
RD		 650 if (qp->uobject) {
651 mthca_unmap_user_db(to_mdev(qp->device),
652 &to_mucontext(qp->uobject->context)->uar,
653 to_mucontext(qp->uobject->context)->db_tab,
654 to_mqp(qp)->sq.db_index);
655 mthca_unmap_user_db(to_mdev(qp->device),
656 &to_mucontext(qp->uobject->context)->uar,
657 to_mucontext(qp->uobject->context)->db_tab,
658 to_mqp(qp)->rq.db_index);
659 }
1da177e4
LT		 660 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
661 kfree(qp);
662 return 0;
663}
664
1cf296b6
RD		 665static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
666 struct ib_ucontext *context,
667 struct ib_udata *udata)
1da177e4 668{
74c2174e 669 struct mthca_create_cq ucmd;
1da177e4
LT		 670 struct mthca_cq *cq;
671 int nent;
672 int err;
673
efaae8f7
JM		 674 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
675 return ERR_PTR(-EINVAL);
676
74c2174e
RD		 677 if (context) {
678 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
679 return ERR_PTR(-EFAULT);
680
681 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
682 to_mucontext(context)->db_tab,
683 ucmd.set_db_index, ucmd.set_db_page);
684 if (err)
685 return ERR_PTR(err);
686
687 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
688 to_mucontext(context)->db_tab,
689 ucmd.arm_db_index, ucmd.arm_db_page);
690 if (err)
691 goto err_unmap_set;
692 }
693
1da177e4 694 cq = kmalloc(sizeof *cq, GFP_KERNEL);
74c2174e
RD		 695 if (!cq) {
696 err = -ENOMEM;
697 goto err_unmap_arm;
698 }
699
700 if (context) {
4885bf64
RD		 701 cq->buf.mr.ibmr.lkey = ucmd.lkey;
702 cq->set_ci_db_index = ucmd.set_db_index;
703 cq->arm_db_index = ucmd.arm_db_index;
74c2174e 704 }
1da177e4
LT		 705
706 for (nent = 1; nent <= entries; nent <<= 1)
707 ; /* nothing */
708
74c2174e
RD		 709 err = mthca_init_cq(to_mdev(ibdev), nent,
710 context ? to_mucontext(context) : NULL,
711 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
712 cq);
713 if (err)
714 goto err_free;
715
716 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
717 mthca_free_cq(to_mdev(ibdev), cq);
718 goto err_free;
1da177e4
LT		 719 }
720
4885bf64
RD		 721 cq->resize_buf = NULL;
722
1da177e4 723 return &cq->ibcq;
74c2174e
RD		 724
725err_free:
726 kfree(cq);
727
728err_unmap_arm:
729 if (context)
730 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
731 to_mucontext(context)->db_tab, ucmd.arm_db_index);
732
733err_unmap_set:
734 if (context)
735 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
736 to_mucontext(context)->db_tab, ucmd.set_db_index);
737
738 return ERR_PTR(err);
1da177e4
LT		 739}
740
4885bf64
RD		 741static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
742 int entries)
743{
744 int ret;
745
746 spin_lock_irq(&cq->lock);
747 if (cq->resize_buf) {
748 ret = -EBUSY;
749 goto unlock;
750 }
751
752 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
753 if (!cq->resize_buf) {
754 ret = -ENOMEM;
755 goto unlock;
756 }
757
758 cq->resize_buf->state = CQ_RESIZE_ALLOC;
759
760 ret = 0;
761
762unlock:
763 spin_unlock_irq(&cq->lock);
764
765 if (ret)
766 return ret;
767
768 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
769 if (ret) {
770 spin_lock_irq(&cq->lock);
771 kfree(cq->resize_buf);
772 cq->resize_buf = NULL;
773 spin_unlock_irq(&cq->lock);
774 return ret;
775 }
776
777 cq->resize_buf->cqe = entries - 1;
778
779 spin_lock_irq(&cq->lock);
780 cq->resize_buf->state = CQ_RESIZE_READY;
781 spin_unlock_irq(&cq->lock);
782
783 return 0;
784}
785
786static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
787{
788 struct mthca_dev *dev = to_mdev(ibcq->device);
789 struct mthca_cq *cq = to_mcq(ibcq);
790 struct mthca_resize_cq ucmd;
791 u32 lkey;
792 u8 status;
793 int ret;
794
795 if (entries < 1 || entries > dev->limits.max_cqes)
796 return -EINVAL;
797
c93b6fba
RD		 798 mutex_lock(&cq->mutex);
799
4885bf64 800 entries = roundup_pow_of_two(entries + 1);
c93b6fba
RD		 801 if (entries == ibcq->cqe + 1) {
802 ret = 0;
803 goto out;
804 }
4885bf64
RD		 805
806 if (cq->is_kernel) {
807 ret = mthca_alloc_resize_buf(dev, cq, entries);
808 if (ret)
c93b6fba 809 goto out;
4885bf64
RD		 810 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
811 } else {
c93b6fba
RD		 812 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
813 ret = -EFAULT;
814 goto out;
815 }
4885bf64
RD		 816 lkey = ucmd.lkey;
817 }
818
f0d1b0b3 819 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
4885bf64
RD		 820 if (status)
821 ret = -EINVAL;
822
823 if (ret) {
824 if (cq->resize_buf) {
825 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
826 cq->resize_buf->cqe);
827 kfree(cq->resize_buf);
828 spin_lock_irq(&cq->lock);
829 cq->resize_buf = NULL;
830 spin_unlock_irq(&cq->lock);
831 }
c93b6fba 832 goto out;
4885bf64
RD		 833 }
834
835 if (cq->is_kernel) {
836 struct mthca_cq_buf tbuf;
837 int tcqe;
838
839 spin_lock_irq(&cq->lock);
840 if (cq->resize_buf->state == CQ_RESIZE_READY) {
841 mthca_cq_resize_copy_cqes(cq);
842 tbuf = cq->buf;
843 tcqe = cq->ibcq.cqe;
844 cq->buf = cq->resize_buf->buf;
845 cq->ibcq.cqe = cq->resize_buf->cqe;
846 } else {
847 tbuf = cq->resize_buf->buf;
848 tcqe = cq->resize_buf->cqe;
849 }
850
851 kfree(cq->resize_buf);
852 cq->resize_buf = NULL;
853 spin_unlock_irq(&cq->lock);
854
855 mthca_free_cq_buf(dev, &tbuf, tcqe);
856 } else
857 ibcq->cqe = entries - 1;
858
c93b6fba
RD		 859out:
860 mutex_unlock(&cq->mutex);
861
862 return ret;
4885bf64
RD		 863}
864
1da177e4
LT		 865static int mthca_destroy_cq(struct ib_cq *cq)
866{
74c2174e
RD		 867 if (cq->uobject) {
868 mthca_unmap_user_db(to_mdev(cq->device),
869 &to_mucontext(cq->uobject->context)->uar,
870 to_mucontext(cq->uobject->context)->db_tab,
871 to_mcq(cq)->arm_db_index);
872 mthca_unmap_user_db(to_mdev(cq->device),
873 &to_mucontext(cq->uobject->context)->uar,
874 to_mucontext(cq->uobject->context)->db_tab,
875 to_mcq(cq)->set_ci_db_index);
876 }
1da177e4
LT		 877 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
878 kfree(cq);
879
880 return 0;
881}
882
883static inline u32 convert_access(int acc)
884{
885 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
886 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
887 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
888 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
889 MTHCA_MPT_FLAG_LOCAL_READ;
890}
891
892static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
893{
894 struct mthca_mr *mr;
895 int err;
896
897 mr = kmalloc(sizeof *mr, GFP_KERNEL);
898 if (!mr)
899 return ERR_PTR(-ENOMEM);
900
901 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
902 to_mpd(pd)->pd_num,
903 convert_access(acc), mr);
904
905 if (err) {
906 kfree(mr);
907 return ERR_PTR(err);
908 }
909
910 return &mr->ibmr;
911}
912
913static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
914 struct ib_phys_buf *buffer_list,
915 int num_phys_buf,
916 int acc,
917 u64 *iova_start)
918{
919 struct mthca_mr *mr;
920 u64 *page_list;
921 u64 total_size;
922 u64 mask;
923 int shift;
924 int npages;
925 int err;
926 int i, j, n;
927
928 /* First check that we have enough alignment */
929 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
930 return ERR_PTR(-EINVAL);
931
1da177e4
LT		 932 mask = 0;
933 total_size = 0;
934 for (i = 0; i < num_phys_buf; ++i) {
6627fa66
MT		 935 if (i != 0)
936 mask |= buffer_list[i].addr;
937 if (i != num_phys_buf - 1)
938 mask |= buffer_list[i].addr + buffer_list[i].size;
1da177e4
LT		 939
940 total_size += buffer_list[i].size;
1da177e4
LT		 941 }
942
6627fa66
MT		 943 if (mask & ~PAGE_MASK)
944 return ERR_PTR(-EINVAL);
945
1da177e4
LT		 946 /* Find largest page shift we can use to cover buffers */
947 for (shift = PAGE_SHIFT; shift < 31; ++shift)
948 if (num_phys_buf > 1) {
949 if ((1ULL << shift) & mask)
950 break;
951 } else {
952 if (1ULL << shift >=
953 buffer_list[0].size +
954 (buffer_list[0].addr & ((1ULL << shift) - 1)))
955 break;
956 }
957
958 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
959 buffer_list[0].addr &= ~0ull << shift;
960
961 mr = kmalloc(sizeof *mr, GFP_KERNEL);
962 if (!mr)
963 return ERR_PTR(-ENOMEM);
964
965 npages = 0;
966 for (i = 0; i < num_phys_buf; ++i)
967 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
968
969 if (!npages)
970 return &mr->ibmr;
971
972 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
973 if (!page_list) {
974 kfree(mr);
975 return ERR_PTR(-ENOMEM);
976 }
977
978 n = 0;
979 for (i = 0; i < num_phys_buf; ++i)
980 for (j = 0;
981 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
982 ++j)
983 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
984
985 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
986 "in PD %x; shift %d, npages %d.\n",
987 (unsigned long long) buffer_list[0].addr,
988 (unsigned long long) *iova_start,
989 to_mpd(pd)->pd_num,
990 shift, npages);
991
992 err = mthca_mr_alloc_phys(to_mdev(pd->device),
993 to_mpd(pd)->pd_num,
994 page_list, shift, npages,
995 *iova_start, total_size,
996 convert_access(acc), mr);
997
998 if (err) {
761f9eb8 999 kfree(page_list);
1da177e4
LT		 1000 kfree(mr);
1001 return ERR_PTR(err);
1002 }
1003
1004 kfree(page_list);
1005 return &mr->ibmr;
1006}
1007
24d4281b
RD		 1008static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
1009 int acc, struct ib_udata *udata)
1010{
1011 struct mthca_dev *dev = to_mdev(pd->device);
1012 struct ib_umem_chunk *chunk;
1013 struct mthca_mr *mr;
1014 u64 *pages;
1015 int shift, n, len;
1016 int i, j, k;
1017 int err = 0;
1018
1019 shift = ffs(region->page_size) - 1;
1020
1021 mr = kmalloc(sizeof *mr, GFP_KERNEL);
1022 if (!mr)
1023 return ERR_PTR(-ENOMEM);
1024
1025 n = 0;
1026 list_for_each_entry(chunk, &region->chunk_list, list)
1027 n += chunk->nents;
1028
1029 mr->mtt = mthca_alloc_mtt(dev, n);
1030 if (IS_ERR(mr->mtt)) {
1031 err = PTR_ERR(mr->mtt);
1032 goto err;
1033 }
1034
1035 pages = (u64 *) __get_free_page(GFP_KERNEL);
1036 if (!pages) {
1037 err = -ENOMEM;
1038 goto err_mtt;
1039 }
1040
1041 i = n = 0;
1042
1043 list_for_each_entry(chunk, &region->chunk_list, list)
1044 for (j = 0; j < chunk->nmap; ++j) {
1045 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1046 for (k = 0; k < len; ++k) {
1047 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1048 region->page_size * k;
1049 /*
1050 * Be friendly to WRITE_MTT command
1051 * and leave two empty slots for the
1052 * index and reserved fields of the
1053 * mailbox.
1054 */
1055 if (i == PAGE_SIZE / sizeof (u64) - 2) {
1056 err = mthca_write_mtt(dev, mr->mtt,
1057 n, pages, i);
1058 if (err)
1059 goto mtt_done;
1060 n += i;
1061 i = 0;
1062 }
1063 }
1064 }
1065
1066 if (i)
1067 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1068mtt_done:
1069 free_page((unsigned long) pages);
1070 if (err)
1071 goto err_mtt;
1072
1073 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
1074 region->length, convert_access(acc), mr);
1075
1076 if (err)
1077 goto err_mtt;
1078
1079 return &mr->ibmr;
1080
1081err_mtt:
1082 mthca_free_mtt(dev, mr->mtt);
1083
1084err:
1085 kfree(mr);
1086 return ERR_PTR(err);
1087}
1088
1da177e4
LT		 1089static int mthca_dereg_mr(struct ib_mr *mr)
1090{
e464b2a6
RD		 1091 struct mthca_mr *mmr = to_mmr(mr);
1092 mthca_free_mr(to_mdev(mr->device), mmr);
1093 kfree(mmr);
1da177e4
LT		 1094 return 0;
1095}
1096
e0f5fdca
MT		 1097static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1098 struct ib_fmr_attr *fmr_attr)
1099{
1100 struct mthca_fmr *fmr;
1101 int err;
1102
bed8bdfd 1103 fmr = kmemdup(fmr_attr, sizeof *fmr, GFP_KERNEL);
e0f5fdca
MT		 1104 if (!fmr)
1105 return ERR_PTR(-ENOMEM);
1106
e0f5fdca
MT		 1107 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1108 convert_access(mr_access_flags), fmr);
1109
1110 if (err) {
1111 kfree(fmr);
1112 return ERR_PTR(err);
1113 }
1114
1115 return &fmr->ibmr;
1116}
1117
1118static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1119{
1120 struct mthca_fmr *mfmr = to_mfmr(fmr);
1121 int err;
1122
1123 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1124 if (err)
1125 return err;
1126
1127 kfree(mfmr);
1128 return 0;
1129}
1130
1131static int mthca_unmap_fmr(struct list_head *fmr_list)
1132{
1133 struct ib_fmr *fmr;
1134 int err;
1135 u8 status;
1136 struct mthca_dev *mdev = NULL;
1137
1138 list_for_each_entry(fmr, fmr_list, list) {
1139 if (mdev && to_mdev(fmr->device) != mdev)
1140 return -EINVAL;
1141 mdev = to_mdev(fmr->device);
1142 }
1143
1144 if (!mdev)
1145 return 0;
1146
d10ddbf6 1147 if (mthca_is_memfree(mdev)) {
e0f5fdca
MT		 1148 list_for_each_entry(fmr, fmr_list, list)
1149 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1150
1151 wmb();
1152 } else
1153 list_for_each_entry(fmr, fmr_list, list)
1154 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1155
1156 err = mthca_SYNC_TPT(mdev, &status);
1157 if (err)
1158 return err;
1159 if (status)
1160 return -EINVAL;
1161 return 0;
1162}
1163
1da177e4
LT		 1164static ssize_t show_rev(struct class_device *cdev, char *buf)
1165{
1166 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1167 return sprintf(buf, "%x\n", dev->rev_id);
1168}
1169
1170static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1171{
1172 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
87cfe323 1173 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1da177e4
LT		 1174 (int) (dev->fw_ver >> 16) & 0xffff,
1175 (int) dev->fw_ver & 0xffff);
1176}
1177
1178static ssize_t show_hca(struct class_device *cdev, char *buf)
1179{
1180 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
68a3c212
RD		 1181 switch (dev->pdev->device) {
1182 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1183 return sprintf(buf, "MT23108\n");
1184 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1185 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1186 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1187 return sprintf(buf, "MT25208\n");
1188 case PCI_DEVICE_ID_MELLANOX_SINAI:
1189 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1190 return sprintf(buf, "MT25204\n");
1191 default:
1192 return sprintf(buf, "unknown\n");
1da177e4
LT		 1193 }
1194}
1195
2e8b981c
MT		 1196static ssize_t show_board(struct class_device *cdev, char *buf)
1197{
1198 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1199 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1200}
1201
1da177e4
LT		 1202static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1203static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1204static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2e8b981c 1205static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1da177e4
LT		 1206
1207static struct class_device_attribute *mthca_class_attributes[] = {
1208 &class_device_attr_hw_rev,
1209 &class_device_attr_fw_ver,
2e8b981c
MT		 1210 &class_device_attr_hca_type,
1211 &class_device_attr_board_id
1da177e4
LT		 1212};
1213
cf311cd4
SH		 1214static int mthca_init_node_data(struct mthca_dev *dev)
1215{
1216 struct ib_smp *in_mad = NULL;
1217 struct ib_smp *out_mad = NULL;
1218 int err = -ENOMEM;
1219 u8 status;
1220
1221 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1222 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1223 if (!in_mad || !out_mad)
1224 goto out;
1225
1226 init_query_mad(in_mad);
6dfc3901
RD		 1227 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1228
1229 err = mthca_MAD_IFC(dev, 1, 1,
1230 1, NULL, NULL, in_mad, out_mad,
1231 &status);
1232 if (err)
1233 goto out;
1234 if (status) {
1235 err = -EINVAL;
1236 goto out;
1237 }
1238
1239 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1240
cf311cd4
SH		 1241 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1242
1243 err = mthca_MAD_IFC(dev, 1, 1,
1244 1, NULL, NULL, in_mad, out_mad,
1245 &status);
1246 if (err)
1247 goto out;
1248 if (status) {
1249 err = -EINVAL;
1250 goto out;
1251 }
1252
1253 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1254
1255out:
1256 kfree(in_mad);
1257 kfree(out_mad);
1258 return err;
1259}
1260
1da177e4
LT		 1261int mthca_register_device(struct mthca_dev *dev)
1262{
1263 int ret;
1264 int i;
1265
cf311cd4
SH		 1266 ret = mthca_init_node_data(dev);
1267 if (ret)
1268 return ret;
1269
1da177e4 1270 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1cf296b6
RD		 1271 dev->ib_dev.owner = THIS_MODULE;
1272
274c0891 1273 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
883a99c7
RD		 1274 dev->ib_dev.uverbs_cmd_mask =
1275 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1276 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1277 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1278 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1279 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1280 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1281 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1282 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1283 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
4885bf64 1284 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
883a99c7
RD		 1285 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1286 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
8ebe5077 1287 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
883a99c7
RD		 1288 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1289 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1290 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
5beba532 1291 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
07ebafba 1292 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1da177e4
LT		 1293 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1294 dev->ib_dev.dma_device = &dev->pdev->dev;
1295 dev->ib_dev.class_dev.dev = &dev->pdev->dev;
1296 dev->ib_dev.query_device = mthca_query_device;
1297 dev->ib_dev.query_port = mthca_query_port;
6dfc3901 1298 dev->ib_dev.modify_device = mthca_modify_device;
1da177e4
LT		 1299 dev->ib_dev.modify_port = mthca_modify_port;
1300 dev->ib_dev.query_pkey = mthca_query_pkey;
1301 dev->ib_dev.query_gid = mthca_query_gid;
5e0b537c
RD		 1302 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1303 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
53b8b3ff 1304 dev->ib_dev.mmap = mthca_mmap_uar;
1da177e4
LT		 1305 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1306 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1307 dev->ib_dev.create_ah = mthca_ah_create;
1d89b1ae 1308 dev->ib_dev.query_ah = mthca_ah_query;
1da177e4 1309 dev->ib_dev.destroy_ah = mthca_ah_destroy;
ec34a922
RD		 1310
1311 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1312 dev->ib_dev.create_srq = mthca_create_srq;
8ebe5077
EC		 1313 dev->ib_dev.modify_srq = mthca_modify_srq;
1314 dev->ib_dev.query_srq = mthca_query_srq;
ec34a922 1315 dev->ib_dev.destroy_srq = mthca_destroy_srq;
5beba532
RD		 1316 dev->ib_dev.uverbs_cmd_mask |=
1317 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1318 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1319 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1320 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
ec34a922
RD		 1321
1322 if (mthca_is_memfree(dev))
1323 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1324 else
1325 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1326 }
1327
1da177e4
LT		 1328 dev->ib_dev.create_qp = mthca_create_qp;
1329 dev->ib_dev.modify_qp = mthca_modify_qp;
8ebe5077 1330 dev->ib_dev.query_qp = mthca_query_qp;
1da177e4
LT		 1331 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1332 dev->ib_dev.create_cq = mthca_create_cq;
4885bf64 1333 dev->ib_dev.resize_cq = mthca_resize_cq;
1da177e4
LT		 1334 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1335 dev->ib_dev.poll_cq = mthca_poll_cq;
1336 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1337 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
24d4281b 1338 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1da177e4 1339 dev->ib_dev.dereg_mr = mthca_dereg_mr;
e0f5fdca
MT		 1340
1341 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1342 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1343 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1344 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
d10ddbf6 1345 if (mthca_is_memfree(dev))
e0f5fdca
MT		 1346 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1347 else
1348 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1349 }
1350
1da177e4
LT		 1351 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1352 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1353 dev->ib_dev.process_mad = mthca_process_mad;
1354
d10ddbf6 1355 if (mthca_is_memfree(dev)) {
1da177e4
LT		 1356 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1357 dev->ib_dev.post_send = mthca_arbel_post_send;
1358 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1359 } else {
1360 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1361 dev->ib_dev.post_send = mthca_tavor_post_send;
1362 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1363 }
1364
fd9cfdd1 1365 mutex_init(&dev->cap_mask_mutex);
1da177e4
LT		 1366
1367 ret = ib_register_device(&dev->ib_dev);
1368 if (ret)
1369 return ret;
1370
1371 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1372 ret = class_device_create_file(&dev->ib_dev.class_dev,
1373 mthca_class_attributes[i]);
1374 if (ret) {
1375 ib_unregister_device(&dev->ib_dev);
1376 return ret;
1377 }
1378 }
1379
3d155f8c
RD		 1380 mthca_start_catas_poll(dev);
1381
1da177e4
LT		 1382 return 0;
1383}
1384
1385void mthca_unregister_device(struct mthca_dev *dev)
1386{
3d155f8c 1387 mthca_stop_catas_poll(dev);
1da177e4
LT		 1388 ib_unregister_device(&dev->ib_dev);
1389}
Linux kernel - Deliverables
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