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[mirror_ubuntu-zesty-kernel.git] / drivers / infiniband / hw / mlx5 / main.c
1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <asm-generic/kmap_types.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/errno.h>
37 #include <linux/pci.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/slab.h>
40 #include <linux/io-mapping.h>
41 #include <linux/sched.h>
42 #include <rdma/ib_user_verbs.h>
43 #include <linux/mlx5/vport.h>
44 #include <rdma/ib_smi.h>
45 #include <rdma/ib_umem.h>
46 #include "user.h"
47 #include "mlx5_ib.h"
48
49 #define DRIVER_NAME "mlx5_ib"
50 #define DRIVER_VERSION "2.2-1"
51 #define DRIVER_RELDATE "Feb 2014"
52
53 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
54 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
55 MODULE_LICENSE("Dual BSD/GPL");
56 MODULE_VERSION(DRIVER_VERSION);
57
58 static int deprecated_prof_sel = 2;
59 module_param_named(prof_sel, deprecated_prof_sel, int, 0444);
60 MODULE_PARM_DESC(prof_sel, "profile selector. Deprecated here. Moved to module mlx5_core");
61
62 static char mlx5_version[] =
63 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
64 DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
65
66 static enum rdma_link_layer
67 mlx5_ib_port_link_layer(struct ib_device *device)
68 {
69 struct mlx5_ib_dev *dev = to_mdev(device);
70
71 switch (MLX5_CAP_GEN(dev->mdev, port_type)) {
72 case MLX5_CAP_PORT_TYPE_IB:
73 return IB_LINK_LAYER_INFINIBAND;
74 case MLX5_CAP_PORT_TYPE_ETH:
75 return IB_LINK_LAYER_ETHERNET;
76 default:
77 return IB_LINK_LAYER_UNSPECIFIED;
78 }
79 }
80
81 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
82 {
83 return !dev->mdev->issi;
84 }
85
86 enum {
87 MLX5_VPORT_ACCESS_METHOD_MAD,
88 MLX5_VPORT_ACCESS_METHOD_HCA,
89 MLX5_VPORT_ACCESS_METHOD_NIC,
90 };
91
92 static int mlx5_get_vport_access_method(struct ib_device *ibdev)
93 {
94 if (mlx5_use_mad_ifc(to_mdev(ibdev)))
95 return MLX5_VPORT_ACCESS_METHOD_MAD;
96
97 if (mlx5_ib_port_link_layer(ibdev) ==
98 IB_LINK_LAYER_ETHERNET)
99 return MLX5_VPORT_ACCESS_METHOD_NIC;
100
101 return MLX5_VPORT_ACCESS_METHOD_HCA;
102 }
103
104 static int mlx5_query_system_image_guid(struct ib_device *ibdev,
105 __be64 *sys_image_guid)
106 {
107 struct mlx5_ib_dev *dev = to_mdev(ibdev);
108 struct mlx5_core_dev *mdev = dev->mdev;
109 u64 tmp;
110 int err;
111
112 switch (mlx5_get_vport_access_method(ibdev)) {
113 case MLX5_VPORT_ACCESS_METHOD_MAD:
114 return mlx5_query_mad_ifc_system_image_guid(ibdev,
115 sys_image_guid);
116
117 case MLX5_VPORT_ACCESS_METHOD_HCA:
118 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
119 if (!err)
120 *sys_image_guid = cpu_to_be64(tmp);
121 return err;
122
123 default:
124 return -EINVAL;
125 }
126 }
127
128 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
129 u16 *max_pkeys)
130 {
131 struct mlx5_ib_dev *dev = to_mdev(ibdev);
132 struct mlx5_core_dev *mdev = dev->mdev;
133
134 switch (mlx5_get_vport_access_method(ibdev)) {
135 case MLX5_VPORT_ACCESS_METHOD_MAD:
136 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
137
138 case MLX5_VPORT_ACCESS_METHOD_HCA:
139 case MLX5_VPORT_ACCESS_METHOD_NIC:
140 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
141 pkey_table_size));
142 return 0;
143
144 default:
145 return -EINVAL;
146 }
147 }
148
149 static int mlx5_query_vendor_id(struct ib_device *ibdev,
150 u32 *vendor_id)
151 {
152 struct mlx5_ib_dev *dev = to_mdev(ibdev);
153
154 switch (mlx5_get_vport_access_method(ibdev)) {
155 case MLX5_VPORT_ACCESS_METHOD_MAD:
156 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
157
158 case MLX5_VPORT_ACCESS_METHOD_HCA:
159 case MLX5_VPORT_ACCESS_METHOD_NIC:
160 return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
161
162 default:
163 return -EINVAL;
164 }
165 }
166
167 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
168 __be64 *node_guid)
169 {
170 u64 tmp;
171 int err;
172
173 switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
174 case MLX5_VPORT_ACCESS_METHOD_MAD:
175 return mlx5_query_mad_ifc_node_guid(dev, node_guid);
176
177 case MLX5_VPORT_ACCESS_METHOD_HCA:
178 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
179 if (!err)
180 *node_guid = cpu_to_be64(tmp);
181 return err;
182
183 default:
184 return -EINVAL;
185 }
186 }
187
188 struct mlx5_reg_node_desc {
189 u8 desc[64];
190 };
191
192 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
193 {
194 struct mlx5_reg_node_desc in;
195
196 if (mlx5_use_mad_ifc(dev))
197 return mlx5_query_mad_ifc_node_desc(dev, node_desc);
198
199 memset(&in, 0, sizeof(in));
200
201 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
202 sizeof(struct mlx5_reg_node_desc),
203 MLX5_REG_NODE_DESC, 0, 0);
204 }
205
206 static int mlx5_ib_query_device(struct ib_device *ibdev,
207 struct ib_device_attr *props,
208 struct ib_udata *uhw)
209 {
210 struct mlx5_ib_dev *dev = to_mdev(ibdev);
211 struct mlx5_core_dev *mdev = dev->mdev;
212 int err = -ENOMEM;
213 int max_rq_sg;
214 int max_sq_sg;
215 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
216
217 if (uhw->inlen || uhw->outlen)
218 return -EINVAL;
219
220 memset(props, 0, sizeof(*props));
221 err = mlx5_query_system_image_guid(ibdev,
222 &props->sys_image_guid);
223 if (err)
224 return err;
225
226 err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
227 if (err)
228 return err;
229
230 err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
231 if (err)
232 return err;
233
234 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
235 (fw_rev_min(dev->mdev) << 16) |
236 fw_rev_sub(dev->mdev);
237 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
238 IB_DEVICE_PORT_ACTIVE_EVENT |
239 IB_DEVICE_SYS_IMAGE_GUID |
240 IB_DEVICE_RC_RNR_NAK_GEN;
241
242 if (MLX5_CAP_GEN(mdev, pkv))
243 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
244 if (MLX5_CAP_GEN(mdev, qkv))
245 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
246 if (MLX5_CAP_GEN(mdev, apm))
247 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
248 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
249 if (MLX5_CAP_GEN(mdev, xrc))
250 props->device_cap_flags |= IB_DEVICE_XRC;
251 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
252 if (MLX5_CAP_GEN(mdev, sho)) {
253 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
254 /* At this stage no support for signature handover */
255 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
256 IB_PROT_T10DIF_TYPE_2 |
257 IB_PROT_T10DIF_TYPE_3;
258 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
259 IB_GUARD_T10DIF_CSUM;
260 }
261 if (MLX5_CAP_GEN(mdev, block_lb_mc))
262 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
263
264 props->vendor_part_id = mdev->pdev->device;
265 props->hw_ver = mdev->pdev->revision;
266
267 props->max_mr_size = ~0ull;
268 props->page_size_cap = ~(min_page_size - 1);
269 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
270 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
271 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
272 sizeof(struct mlx5_wqe_data_seg);
273 max_sq_sg = (MLX5_CAP_GEN(mdev, max_wqe_sz_sq) -
274 sizeof(struct mlx5_wqe_ctrl_seg)) /
275 sizeof(struct mlx5_wqe_data_seg);
276 props->max_sge = min(max_rq_sg, max_sq_sg);
277 props->max_sge_rd = props->max_sge;
278 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
279 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_eq_sz)) - 1;
280 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
281 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
282 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
283 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
284 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
285 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
286 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
287 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
288 props->max_srq_sge = max_rq_sg - 1;
289 props->max_fast_reg_page_list_len = (unsigned int)-1;
290 props->atomic_cap = IB_ATOMIC_NONE;
291 props->masked_atomic_cap = IB_ATOMIC_NONE;
292 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
293 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
294 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
295 props->max_mcast_grp;
296 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
297
298 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
299 if (MLX5_CAP_GEN(mdev, pg))
300 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
301 props->odp_caps = dev->odp_caps;
302 #endif
303
304 return 0;
305 }
306
307 enum mlx5_ib_width {
308 MLX5_IB_WIDTH_1X = 1 << 0,
309 MLX5_IB_WIDTH_2X = 1 << 1,
310 MLX5_IB_WIDTH_4X = 1 << 2,
311 MLX5_IB_WIDTH_8X = 1 << 3,
312 MLX5_IB_WIDTH_12X = 1 << 4
313 };
314
315 static int translate_active_width(struct ib_device *ibdev, u8 active_width,
316 u8 *ib_width)
317 {
318 struct mlx5_ib_dev *dev = to_mdev(ibdev);
319 int err = 0;
320
321 if (active_width & MLX5_IB_WIDTH_1X) {
322 *ib_width = IB_WIDTH_1X;
323 } else if (active_width & MLX5_IB_WIDTH_2X) {
324 mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n",
325 (int)active_width);
326 err = -EINVAL;
327 } else if (active_width & MLX5_IB_WIDTH_4X) {
328 *ib_width = IB_WIDTH_4X;
329 } else if (active_width & MLX5_IB_WIDTH_8X) {
330 *ib_width = IB_WIDTH_8X;
331 } else if (active_width & MLX5_IB_WIDTH_12X) {
332 *ib_width = IB_WIDTH_12X;
333 } else {
334 mlx5_ib_dbg(dev, "Invalid active_width %d\n",
335 (int)active_width);
336 err = -EINVAL;
337 }
338
339 return err;
340 }
341
342 static int mlx5_mtu_to_ib_mtu(int mtu)
343 {
344 switch (mtu) {
345 case 256: return 1;
346 case 512: return 2;
347 case 1024: return 3;
348 case 2048: return 4;
349 case 4096: return 5;
350 default:
351 pr_warn("invalid mtu\n");
352 return -1;
353 }
354 }
355
356 enum ib_max_vl_num {
357 __IB_MAX_VL_0 = 1,
358 __IB_MAX_VL_0_1 = 2,
359 __IB_MAX_VL_0_3 = 3,
360 __IB_MAX_VL_0_7 = 4,
361 __IB_MAX_VL_0_14 = 5,
362 };
363
364 enum mlx5_vl_hw_cap {
365 MLX5_VL_HW_0 = 1,
366 MLX5_VL_HW_0_1 = 2,
367 MLX5_VL_HW_0_2 = 3,
368 MLX5_VL_HW_0_3 = 4,
369 MLX5_VL_HW_0_4 = 5,
370 MLX5_VL_HW_0_5 = 6,
371 MLX5_VL_HW_0_6 = 7,
372 MLX5_VL_HW_0_7 = 8,
373 MLX5_VL_HW_0_14 = 15
374 };
375
376 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
377 u8 *max_vl_num)
378 {
379 switch (vl_hw_cap) {
380 case MLX5_VL_HW_0:
381 *max_vl_num = __IB_MAX_VL_0;
382 break;
383 case MLX5_VL_HW_0_1:
384 *max_vl_num = __IB_MAX_VL_0_1;
385 break;
386 case MLX5_VL_HW_0_3:
387 *max_vl_num = __IB_MAX_VL_0_3;
388 break;
389 case MLX5_VL_HW_0_7:
390 *max_vl_num = __IB_MAX_VL_0_7;
391 break;
392 case MLX5_VL_HW_0_14:
393 *max_vl_num = __IB_MAX_VL_0_14;
394 break;
395
396 default:
397 return -EINVAL;
398 }
399
400 return 0;
401 }
402
403 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
404 struct ib_port_attr *props)
405 {
406 struct mlx5_ib_dev *dev = to_mdev(ibdev);
407 struct mlx5_core_dev *mdev = dev->mdev;
408 struct mlx5_hca_vport_context *rep;
409 int max_mtu;
410 int oper_mtu;
411 int err;
412 u8 ib_link_width_oper;
413 u8 vl_hw_cap;
414
415 rep = kzalloc(sizeof(*rep), GFP_KERNEL);
416 if (!rep) {
417 err = -ENOMEM;
418 goto out;
419 }
420
421 memset(props, 0, sizeof(*props));
422
423 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
424 if (err)
425 goto out;
426
427 props->lid = rep->lid;
428 props->lmc = rep->lmc;
429 props->sm_lid = rep->sm_lid;
430 props->sm_sl = rep->sm_sl;
431 props->state = rep->vport_state;
432 props->phys_state = rep->port_physical_state;
433 props->port_cap_flags = rep->cap_mask1;
434 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
435 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
436 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
437 props->bad_pkey_cntr = rep->pkey_violation_counter;
438 props->qkey_viol_cntr = rep->qkey_violation_counter;
439 props->subnet_timeout = rep->subnet_timeout;
440 props->init_type_reply = rep->init_type_reply;
441
442 err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port);
443 if (err)
444 goto out;
445
446 err = translate_active_width(ibdev, ib_link_width_oper,
447 &props->active_width);
448 if (err)
449 goto out;
450 err = mlx5_query_port_proto_oper(mdev, &props->active_speed, MLX5_PTYS_IB,
451 port);
452 if (err)
453 goto out;
454
455 mlx5_query_port_max_mtu(mdev, &max_mtu, port);
456
457 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
458
459 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
460
461 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
462
463 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
464 if (err)
465 goto out;
466
467 err = translate_max_vl_num(ibdev, vl_hw_cap,
468 &props->max_vl_num);
469 out:
470 kfree(rep);
471 return err;
472 }
473
474 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
475 struct ib_port_attr *props)
476 {
477 switch (mlx5_get_vport_access_method(ibdev)) {
478 case MLX5_VPORT_ACCESS_METHOD_MAD:
479 return mlx5_query_mad_ifc_port(ibdev, port, props);
480
481 case MLX5_VPORT_ACCESS_METHOD_HCA:
482 return mlx5_query_hca_port(ibdev, port, props);
483
484 default:
485 return -EINVAL;
486 }
487 }
488
489 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
490 union ib_gid *gid)
491 {
492 struct mlx5_ib_dev *dev = to_mdev(ibdev);
493 struct mlx5_core_dev *mdev = dev->mdev;
494
495 switch (mlx5_get_vport_access_method(ibdev)) {
496 case MLX5_VPORT_ACCESS_METHOD_MAD:
497 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
498
499 case MLX5_VPORT_ACCESS_METHOD_HCA:
500 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
501
502 default:
503 return -EINVAL;
504 }
505
506 }
507
508 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
509 u16 *pkey)
510 {
511 struct mlx5_ib_dev *dev = to_mdev(ibdev);
512 struct mlx5_core_dev *mdev = dev->mdev;
513
514 switch (mlx5_get_vport_access_method(ibdev)) {
515 case MLX5_VPORT_ACCESS_METHOD_MAD:
516 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
517
518 case MLX5_VPORT_ACCESS_METHOD_HCA:
519 case MLX5_VPORT_ACCESS_METHOD_NIC:
520 return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index,
521 pkey);
522 default:
523 return -EINVAL;
524 }
525 }
526
527 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
528 struct ib_device_modify *props)
529 {
530 struct mlx5_ib_dev *dev = to_mdev(ibdev);
531 struct mlx5_reg_node_desc in;
532 struct mlx5_reg_node_desc out;
533 int err;
534
535 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
536 return -EOPNOTSUPP;
537
538 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
539 return 0;
540
541 /*
542 * If possible, pass node desc to FW, so it can generate
543 * a 144 trap. If cmd fails, just ignore.
544 */
545 memcpy(&in, props->node_desc, 64);
546 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
547 sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
548 if (err)
549 return err;
550
551 memcpy(ibdev->node_desc, props->node_desc, 64);
552
553 return err;
554 }
555
556 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
557 struct ib_port_modify *props)
558 {
559 struct mlx5_ib_dev *dev = to_mdev(ibdev);
560 struct ib_port_attr attr;
561 u32 tmp;
562 int err;
563
564 mutex_lock(&dev->cap_mask_mutex);
565
566 err = mlx5_ib_query_port(ibdev, port, &attr);
567 if (err)
568 goto out;
569
570 tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
571 ~props->clr_port_cap_mask;
572
573 err = mlx5_set_port_caps(dev->mdev, port, tmp);
574
575 out:
576 mutex_unlock(&dev->cap_mask_mutex);
577 return err;
578 }
579
580 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
581 struct ib_udata *udata)
582 {
583 struct mlx5_ib_dev *dev = to_mdev(ibdev);
584 struct mlx5_ib_alloc_ucontext_req_v2 req;
585 struct mlx5_ib_alloc_ucontext_resp resp;
586 struct mlx5_ib_ucontext *context;
587 struct mlx5_uuar_info *uuari;
588 struct mlx5_uar *uars;
589 int gross_uuars;
590 int num_uars;
591 int ver;
592 int uuarn;
593 int err;
594 int i;
595 size_t reqlen;
596
597 if (!dev->ib_active)
598 return ERR_PTR(-EAGAIN);
599
600 memset(&req, 0, sizeof(req));
601 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr);
602 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
603 ver = 0;
604 else if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req_v2))
605 ver = 2;
606 else
607 return ERR_PTR(-EINVAL);
608
609 err = ib_copy_from_udata(&req, udata, reqlen);
610 if (err)
611 return ERR_PTR(err);
612
613 if (req.flags || req.reserved)
614 return ERR_PTR(-EINVAL);
615
616 if (req.total_num_uuars > MLX5_MAX_UUARS)
617 return ERR_PTR(-ENOMEM);
618
619 if (req.total_num_uuars == 0)
620 return ERR_PTR(-EINVAL);
621
622 req.total_num_uuars = ALIGN(req.total_num_uuars,
623 MLX5_NON_FP_BF_REGS_PER_PAGE);
624 if (req.num_low_latency_uuars > req.total_num_uuars - 1)
625 return ERR_PTR(-EINVAL);
626
627 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE;
628 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE;
629 resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
630 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
631 resp.cache_line_size = L1_CACHE_BYTES;
632 resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
633 resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
634 resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
635 resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
636 resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
637
638 context = kzalloc(sizeof(*context), GFP_KERNEL);
639 if (!context)
640 return ERR_PTR(-ENOMEM);
641
642 uuari = &context->uuari;
643 mutex_init(&uuari->lock);
644 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
645 if (!uars) {
646 err = -ENOMEM;
647 goto out_ctx;
648 }
649
650 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars),
651 sizeof(*uuari->bitmap),
652 GFP_KERNEL);
653 if (!uuari->bitmap) {
654 err = -ENOMEM;
655 goto out_uar_ctx;
656 }
657 /*
658 * clear all fast path uuars
659 */
660 for (i = 0; i < gross_uuars; i++) {
661 uuarn = i & 3;
662 if (uuarn == 2 || uuarn == 3)
663 set_bit(i, uuari->bitmap);
664 }
665
666 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL);
667 if (!uuari->count) {
668 err = -ENOMEM;
669 goto out_bitmap;
670 }
671
672 for (i = 0; i < num_uars; i++) {
673 err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index);
674 if (err)
675 goto out_count;
676 }
677
678 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
679 context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
680 #endif
681
682 INIT_LIST_HEAD(&context->db_page_list);
683 mutex_init(&context->db_page_mutex);
684
685 resp.tot_uuars = req.total_num_uuars;
686 resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports);
687 err = ib_copy_to_udata(udata, &resp,
688 sizeof(resp) - sizeof(resp.reserved));
689 if (err)
690 goto out_uars;
691
692 uuari->ver = ver;
693 uuari->num_low_latency_uuars = req.num_low_latency_uuars;
694 uuari->uars = uars;
695 uuari->num_uars = num_uars;
696 return &context->ibucontext;
697
698 out_uars:
699 for (i--; i >= 0; i--)
700 mlx5_cmd_free_uar(dev->mdev, uars[i].index);
701 out_count:
702 kfree(uuari->count);
703
704 out_bitmap:
705 kfree(uuari->bitmap);
706
707 out_uar_ctx:
708 kfree(uars);
709
710 out_ctx:
711 kfree(context);
712 return ERR_PTR(err);
713 }
714
715 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
716 {
717 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
718 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
719 struct mlx5_uuar_info *uuari = &context->uuari;
720 int i;
721
722 for (i = 0; i < uuari->num_uars; i++) {
723 if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index))
724 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
725 }
726
727 kfree(uuari->count);
728 kfree(uuari->bitmap);
729 kfree(uuari->uars);
730 kfree(context);
731
732 return 0;
733 }
734
735 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
736 {
737 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index;
738 }
739
740 static int get_command(unsigned long offset)
741 {
742 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
743 }
744
745 static int get_arg(unsigned long offset)
746 {
747 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
748 }
749
750 static int get_index(unsigned long offset)
751 {
752 return get_arg(offset);
753 }
754
755 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
756 {
757 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
758 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
759 struct mlx5_uuar_info *uuari = &context->uuari;
760 unsigned long command;
761 unsigned long idx;
762 phys_addr_t pfn;
763
764 command = get_command(vma->vm_pgoff);
765 switch (command) {
766 case MLX5_IB_MMAP_REGULAR_PAGE:
767 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
768 return -EINVAL;
769
770 idx = get_index(vma->vm_pgoff);
771 if (idx >= uuari->num_uars)
772 return -EINVAL;
773
774 pfn = uar_index2pfn(dev, uuari->uars[idx].index);
775 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
776 (unsigned long long)pfn);
777
778 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
779 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
780 PAGE_SIZE, vma->vm_page_prot))
781 return -EAGAIN;
782
783 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
784 vma->vm_start,
785 (unsigned long long)pfn << PAGE_SHIFT);
786 break;
787
788 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
789 return -ENOSYS;
790
791 default:
792 return -EINVAL;
793 }
794
795 return 0;
796 }
797
798 static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn)
799 {
800 struct mlx5_create_mkey_mbox_in *in;
801 struct mlx5_mkey_seg *seg;
802 struct mlx5_core_mr mr;
803 int err;
804
805 in = kzalloc(sizeof(*in), GFP_KERNEL);
806 if (!in)
807 return -ENOMEM;
808
809 seg = &in->seg;
810 seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA;
811 seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
812 seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
813 seg->start_addr = 0;
814
815 err = mlx5_core_create_mkey(dev->mdev, &mr, in, sizeof(*in),
816 NULL, NULL, NULL);
817 if (err) {
818 mlx5_ib_warn(dev, "failed to create mkey, %d\n", err);
819 goto err_in;
820 }
821
822 kfree(in);
823 *key = mr.key;
824
825 return 0;
826
827 err_in:
828 kfree(in);
829
830 return err;
831 }
832
833 static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key)
834 {
835 struct mlx5_core_mr mr;
836 int err;
837
838 memset(&mr, 0, sizeof(mr));
839 mr.key = key;
840 err = mlx5_core_destroy_mkey(dev->mdev, &mr);
841 if (err)
842 mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key);
843 }
844
845 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
846 struct ib_ucontext *context,
847 struct ib_udata *udata)
848 {
849 struct mlx5_ib_alloc_pd_resp resp;
850 struct mlx5_ib_pd *pd;
851 int err;
852
853 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
854 if (!pd)
855 return ERR_PTR(-ENOMEM);
856
857 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn);
858 if (err) {
859 kfree(pd);
860 return ERR_PTR(err);
861 }
862
863 if (context) {
864 resp.pdn = pd->pdn;
865 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
866 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
867 kfree(pd);
868 return ERR_PTR(-EFAULT);
869 }
870 } else {
871 err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn);
872 if (err) {
873 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
874 kfree(pd);
875 return ERR_PTR(err);
876 }
877 }
878
879 return &pd->ibpd;
880 }
881
882 static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
883 {
884 struct mlx5_ib_dev *mdev = to_mdev(pd->device);
885 struct mlx5_ib_pd *mpd = to_mpd(pd);
886
887 if (!pd->uobject)
888 free_pa_mkey(mdev, mpd->pa_lkey);
889
890 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn);
891 kfree(mpd);
892
893 return 0;
894 }
895
896 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
897 {
898 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
899 int err;
900
901 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
902 if (err)
903 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
904 ibqp->qp_num, gid->raw);
905
906 return err;
907 }
908
909 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
910 {
911 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
912 int err;
913
914 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
915 if (err)
916 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
917 ibqp->qp_num, gid->raw);
918
919 return err;
920 }
921
922 static int init_node_data(struct mlx5_ib_dev *dev)
923 {
924 int err;
925
926 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
927 if (err)
928 return err;
929
930 dev->mdev->rev_id = dev->mdev->pdev->revision;
931
932 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
933 }
934
935 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
936 char *buf)
937 {
938 struct mlx5_ib_dev *dev =
939 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
940
941 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
942 }
943
944 static ssize_t show_reg_pages(struct device *device,
945 struct device_attribute *attr, char *buf)
946 {
947 struct mlx5_ib_dev *dev =
948 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
949
950 return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
951 }
952
953 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
954 char *buf)
955 {
956 struct mlx5_ib_dev *dev =
957 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
958 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
959 }
960
961 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
962 char *buf)
963 {
964 struct mlx5_ib_dev *dev =
965 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
966 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(dev->mdev),
967 fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
968 }
969
970 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
971 char *buf)
972 {
973 struct mlx5_ib_dev *dev =
974 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
975 return sprintf(buf, "%x\n", dev->mdev->rev_id);
976 }
977
978 static ssize_t show_board(struct device *device, struct device_attribute *attr,
979 char *buf)
980 {
981 struct mlx5_ib_dev *dev =
982 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
983 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
984 dev->mdev->board_id);
985 }
986
987 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
988 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
989 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
990 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
991 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
992 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
993
994 static struct device_attribute *mlx5_class_attributes[] = {
995 &dev_attr_hw_rev,
996 &dev_attr_fw_ver,
997 &dev_attr_hca_type,
998 &dev_attr_board_id,
999 &dev_attr_fw_pages,
1000 &dev_attr_reg_pages,
1001 };
1002
1003 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
1004 enum mlx5_dev_event event, unsigned long param)
1005 {
1006 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context;
1007 struct ib_event ibev;
1008
1009 u8 port = 0;
1010
1011 switch (event) {
1012 case MLX5_DEV_EVENT_SYS_ERROR:
1013 ibdev->ib_active = false;
1014 ibev.event = IB_EVENT_DEVICE_FATAL;
1015 break;
1016
1017 case MLX5_DEV_EVENT_PORT_UP:
1018 ibev.event = IB_EVENT_PORT_ACTIVE;
1019 port = (u8)param;
1020 break;
1021
1022 case MLX5_DEV_EVENT_PORT_DOWN:
1023 ibev.event = IB_EVENT_PORT_ERR;
1024 port = (u8)param;
1025 break;
1026
1027 case MLX5_DEV_EVENT_PORT_INITIALIZED:
1028 /* not used by ULPs */
1029 return;
1030
1031 case MLX5_DEV_EVENT_LID_CHANGE:
1032 ibev.event = IB_EVENT_LID_CHANGE;
1033 port = (u8)param;
1034 break;
1035
1036 case MLX5_DEV_EVENT_PKEY_CHANGE:
1037 ibev.event = IB_EVENT_PKEY_CHANGE;
1038 port = (u8)param;
1039 break;
1040
1041 case MLX5_DEV_EVENT_GUID_CHANGE:
1042 ibev.event = IB_EVENT_GID_CHANGE;
1043 port = (u8)param;
1044 break;
1045
1046 case MLX5_DEV_EVENT_CLIENT_REREG:
1047 ibev.event = IB_EVENT_CLIENT_REREGISTER;
1048 port = (u8)param;
1049 break;
1050 }
1051
1052 ibev.device = &ibdev->ib_dev;
1053 ibev.element.port_num = port;
1054
1055 if (port < 1 || port > ibdev->num_ports) {
1056 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
1057 return;
1058 }
1059
1060 if (ibdev->ib_active)
1061 ib_dispatch_event(&ibev);
1062 }
1063
1064 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
1065 {
1066 int port;
1067
1068 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++)
1069 mlx5_query_ext_port_caps(dev, port);
1070 }
1071
1072 static int get_port_caps(struct mlx5_ib_dev *dev)
1073 {
1074 struct ib_device_attr *dprops = NULL;
1075 struct ib_port_attr *pprops = NULL;
1076 int err = -ENOMEM;
1077 int port;
1078 struct ib_udata uhw = {.inlen = 0, .outlen = 0};
1079
1080 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
1081 if (!pprops)
1082 goto out;
1083
1084 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
1085 if (!dprops)
1086 goto out;
1087
1088 err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
1089 if (err) {
1090 mlx5_ib_warn(dev, "query_device failed %d\n", err);
1091 goto out;
1092 }
1093
1094 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
1095 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
1096 if (err) {
1097 mlx5_ib_warn(dev, "query_port %d failed %d\n",
1098 port, err);
1099 break;
1100 }
1101 dev->mdev->port_caps[port - 1].pkey_table_len =
1102 dprops->max_pkeys;
1103 dev->mdev->port_caps[port - 1].gid_table_len =
1104 pprops->gid_tbl_len;
1105 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
1106 dprops->max_pkeys, pprops->gid_tbl_len);
1107 }
1108
1109 out:
1110 kfree(pprops);
1111 kfree(dprops);
1112
1113 return err;
1114 }
1115
1116 static void destroy_umrc_res(struct mlx5_ib_dev *dev)
1117 {
1118 int err;
1119
1120 err = mlx5_mr_cache_cleanup(dev);
1121 if (err)
1122 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
1123
1124 mlx5_ib_destroy_qp(dev->umrc.qp);
1125 ib_destroy_cq(dev->umrc.cq);
1126 ib_dealloc_pd(dev->umrc.pd);
1127 }
1128
1129 enum {
1130 MAX_UMR_WR = 128,
1131 };
1132
1133 static int create_umr_res(struct mlx5_ib_dev *dev)
1134 {
1135 struct ib_qp_init_attr *init_attr = NULL;
1136 struct ib_qp_attr *attr = NULL;
1137 struct ib_pd *pd;
1138 struct ib_cq *cq;
1139 struct ib_qp *qp;
1140 struct ib_cq_init_attr cq_attr = {};
1141 int ret;
1142
1143 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1144 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1145 if (!attr || !init_attr) {
1146 ret = -ENOMEM;
1147 goto error_0;
1148 }
1149
1150 pd = ib_alloc_pd(&dev->ib_dev);
1151 if (IS_ERR(pd)) {
1152 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
1153 ret = PTR_ERR(pd);
1154 goto error_0;
1155 }
1156
1157 cq_attr.cqe = 128;
1158 cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL,
1159 &cq_attr);
1160 if (IS_ERR(cq)) {
1161 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
1162 ret = PTR_ERR(cq);
1163 goto error_2;
1164 }
1165 ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
1166
1167 init_attr->send_cq = cq;
1168 init_attr->recv_cq = cq;
1169 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
1170 init_attr->cap.max_send_wr = MAX_UMR_WR;
1171 init_attr->cap.max_send_sge = 1;
1172 init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
1173 init_attr->port_num = 1;
1174 qp = mlx5_ib_create_qp(pd, init_attr, NULL);
1175 if (IS_ERR(qp)) {
1176 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
1177 ret = PTR_ERR(qp);
1178 goto error_3;
1179 }
1180 qp->device = &dev->ib_dev;
1181 qp->real_qp = qp;
1182 qp->uobject = NULL;
1183 qp->qp_type = MLX5_IB_QPT_REG_UMR;
1184
1185 attr->qp_state = IB_QPS_INIT;
1186 attr->port_num = 1;
1187 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
1188 IB_QP_PORT, NULL);
1189 if (ret) {
1190 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
1191 goto error_4;
1192 }
1193
1194 memset(attr, 0, sizeof(*attr));
1195 attr->qp_state = IB_QPS_RTR;
1196 attr->path_mtu = IB_MTU_256;
1197
1198 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1199 if (ret) {
1200 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
1201 goto error_4;
1202 }
1203
1204 memset(attr, 0, sizeof(*attr));
1205 attr->qp_state = IB_QPS_RTS;
1206 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1207 if (ret) {
1208 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
1209 goto error_4;
1210 }
1211
1212 dev->umrc.qp = qp;
1213 dev->umrc.cq = cq;
1214 dev->umrc.pd = pd;
1215
1216 sema_init(&dev->umrc.sem, MAX_UMR_WR);
1217 ret = mlx5_mr_cache_init(dev);
1218 if (ret) {
1219 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
1220 goto error_4;
1221 }
1222
1223 kfree(attr);
1224 kfree(init_attr);
1225
1226 return 0;
1227
1228 error_4:
1229 mlx5_ib_destroy_qp(qp);
1230
1231 error_3:
1232 ib_destroy_cq(cq);
1233
1234 error_2:
1235 ib_dealloc_pd(pd);
1236
1237 error_0:
1238 kfree(attr);
1239 kfree(init_attr);
1240 return ret;
1241 }
1242
1243 static int create_dev_resources(struct mlx5_ib_resources *devr)
1244 {
1245 struct ib_srq_init_attr attr;
1246 struct mlx5_ib_dev *dev;
1247 struct ib_cq_init_attr cq_attr = {.cqe = 1};
1248 u32 rsvd_lkey;
1249 int ret = 0;
1250
1251 dev = container_of(devr, struct mlx5_ib_dev, devr);
1252
1253 ret = mlx5_core_query_special_context(dev->mdev, &rsvd_lkey);
1254 if (ret) {
1255 pr_err("Failed to query special context %d\n", ret);
1256 return ret;
1257 }
1258 dev->ib_dev.local_dma_lkey = rsvd_lkey;
1259
1260 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
1261 if (IS_ERR(devr->p0)) {
1262 ret = PTR_ERR(devr->p0);
1263 goto error0;
1264 }
1265 devr->p0->device = &dev->ib_dev;
1266 devr->p0->uobject = NULL;
1267 atomic_set(&devr->p0->usecnt, 0);
1268
1269 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL);
1270 if (IS_ERR(devr->c0)) {
1271 ret = PTR_ERR(devr->c0);
1272 goto error1;
1273 }
1274 devr->c0->device = &dev->ib_dev;
1275 devr->c0->uobject = NULL;
1276 devr->c0->comp_handler = NULL;
1277 devr->c0->event_handler = NULL;
1278 devr->c0->cq_context = NULL;
1279 atomic_set(&devr->c0->usecnt, 0);
1280
1281 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
1282 if (IS_ERR(devr->x0)) {
1283 ret = PTR_ERR(devr->x0);
1284 goto error2;
1285 }
1286 devr->x0->device = &dev->ib_dev;
1287 devr->x0->inode = NULL;
1288 atomic_set(&devr->x0->usecnt, 0);
1289 mutex_init(&devr->x0->tgt_qp_mutex);
1290 INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
1291
1292 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
1293 if (IS_ERR(devr->x1)) {
1294 ret = PTR_ERR(devr->x1);
1295 goto error3;
1296 }
1297 devr->x1->device = &dev->ib_dev;
1298 devr->x1->inode = NULL;
1299 atomic_set(&devr->x1->usecnt, 0);
1300 mutex_init(&devr->x1->tgt_qp_mutex);
1301 INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
1302
1303 memset(&attr, 0, sizeof(attr));
1304 attr.attr.max_sge = 1;
1305 attr.attr.max_wr = 1;
1306 attr.srq_type = IB_SRQT_XRC;
1307 attr.ext.xrc.cq = devr->c0;
1308 attr.ext.xrc.xrcd = devr->x0;
1309
1310 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
1311 if (IS_ERR(devr->s0)) {
1312 ret = PTR_ERR(devr->s0);
1313 goto error4;
1314 }
1315 devr->s0->device = &dev->ib_dev;
1316 devr->s0->pd = devr->p0;
1317 devr->s0->uobject = NULL;
1318 devr->s0->event_handler = NULL;
1319 devr->s0->srq_context = NULL;
1320 devr->s0->srq_type = IB_SRQT_XRC;
1321 devr->s0->ext.xrc.xrcd = devr->x0;
1322 devr->s0->ext.xrc.cq = devr->c0;
1323 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
1324 atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
1325 atomic_inc(&devr->p0->usecnt);
1326 atomic_set(&devr->s0->usecnt, 0);
1327
1328 memset(&attr, 0, sizeof(attr));
1329 attr.attr.max_sge = 1;
1330 attr.attr.max_wr = 1;
1331 attr.srq_type = IB_SRQT_BASIC;
1332 devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
1333 if (IS_ERR(devr->s1)) {
1334 ret = PTR_ERR(devr->s1);
1335 goto error5;
1336 }
1337 devr->s1->device = &dev->ib_dev;
1338 devr->s1->pd = devr->p0;
1339 devr->s1->uobject = NULL;
1340 devr->s1->event_handler = NULL;
1341 devr->s1->srq_context = NULL;
1342 devr->s1->srq_type = IB_SRQT_BASIC;
1343 devr->s1->ext.xrc.cq = devr->c0;
1344 atomic_inc(&devr->p0->usecnt);
1345 atomic_set(&devr->s0->usecnt, 0);
1346
1347 return 0;
1348
1349 error5:
1350 mlx5_ib_destroy_srq(devr->s0);
1351 error4:
1352 mlx5_ib_dealloc_xrcd(devr->x1);
1353 error3:
1354 mlx5_ib_dealloc_xrcd(devr->x0);
1355 error2:
1356 mlx5_ib_destroy_cq(devr->c0);
1357 error1:
1358 mlx5_ib_dealloc_pd(devr->p0);
1359 error0:
1360 return ret;
1361 }
1362
1363 static void destroy_dev_resources(struct mlx5_ib_resources *devr)
1364 {
1365 mlx5_ib_destroy_srq(devr->s1);
1366 mlx5_ib_destroy_srq(devr->s0);
1367 mlx5_ib_dealloc_xrcd(devr->x0);
1368 mlx5_ib_dealloc_xrcd(devr->x1);
1369 mlx5_ib_destroy_cq(devr->c0);
1370 mlx5_ib_dealloc_pd(devr->p0);
1371 }
1372
1373 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
1374 struct ib_port_immutable *immutable)
1375 {
1376 struct ib_port_attr attr;
1377 int err;
1378
1379 err = mlx5_ib_query_port(ibdev, port_num, &attr);
1380 if (err)
1381 return err;
1382
1383 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1384 immutable->gid_tbl_len = attr.gid_tbl_len;
1385 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1386 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1387
1388 return 0;
1389 }
1390
1391 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
1392 {
1393 struct mlx5_ib_dev *dev;
1394 int err;
1395 int i;
1396
1397 /* don't create IB instance over Eth ports, no RoCE yet! */
1398 if (MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH)
1399 return NULL;
1400
1401 printk_once(KERN_INFO "%s", mlx5_version);
1402
1403 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
1404 if (!dev)
1405 return NULL;
1406
1407 dev->mdev = mdev;
1408
1409 err = get_port_caps(dev);
1410 if (err)
1411 goto err_dealloc;
1412
1413 if (mlx5_use_mad_ifc(dev))
1414 get_ext_port_caps(dev);
1415
1416 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
1417
1418 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
1419 dev->ib_dev.owner = THIS_MODULE;
1420 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1421 dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
1422 dev->ib_dev.phys_port_cnt = dev->num_ports;
1423 dev->ib_dev.num_comp_vectors =
1424 dev->mdev->priv.eq_table.num_comp_vectors;
1425 dev->ib_dev.dma_device = &mdev->pdev->dev;
1426
1427 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
1428 dev->ib_dev.uverbs_cmd_mask =
1429 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1430 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1431 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1432 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1433 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1434 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1435 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1436 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1437 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1438 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1439 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1440 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1441 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1442 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1443 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1444 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1445 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1446 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1447 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1448 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1449 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1450 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1451 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1452 dev->ib_dev.uverbs_ex_cmd_mask =
1453 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE);
1454
1455 dev->ib_dev.query_device = mlx5_ib_query_device;
1456 dev->ib_dev.query_port = mlx5_ib_query_port;
1457 dev->ib_dev.query_gid = mlx5_ib_query_gid;
1458 dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
1459 dev->ib_dev.modify_device = mlx5_ib_modify_device;
1460 dev->ib_dev.modify_port = mlx5_ib_modify_port;
1461 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
1462 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
1463 dev->ib_dev.mmap = mlx5_ib_mmap;
1464 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
1465 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
1466 dev->ib_dev.create_ah = mlx5_ib_create_ah;
1467 dev->ib_dev.query_ah = mlx5_ib_query_ah;
1468 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
1469 dev->ib_dev.create_srq = mlx5_ib_create_srq;
1470 dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
1471 dev->ib_dev.query_srq = mlx5_ib_query_srq;
1472 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
1473 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
1474 dev->ib_dev.create_qp = mlx5_ib_create_qp;
1475 dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
1476 dev->ib_dev.query_qp = mlx5_ib_query_qp;
1477 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
1478 dev->ib_dev.post_send = mlx5_ib_post_send;
1479 dev->ib_dev.post_recv = mlx5_ib_post_recv;
1480 dev->ib_dev.create_cq = mlx5_ib_create_cq;
1481 dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
1482 dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
1483 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
1484 dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
1485 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
1486 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
1487 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
1488 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
1489 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
1490 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
1491 dev->ib_dev.process_mad = mlx5_ib_process_mad;
1492 dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
1493 dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
1494 dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
1495 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
1496 dev->ib_dev.get_port_immutable = mlx5_port_immutable;
1497
1498 mlx5_ib_internal_fill_odp_caps(dev);
1499
1500 if (MLX5_CAP_GEN(mdev, xrc)) {
1501 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
1502 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
1503 dev->ib_dev.uverbs_cmd_mask |=
1504 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1505 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1506 }
1507
1508 err = init_node_data(dev);
1509 if (err)
1510 goto err_dealloc;
1511
1512 mutex_init(&dev->cap_mask_mutex);
1513
1514 err = create_dev_resources(&dev->devr);
1515 if (err)
1516 goto err_dealloc;
1517
1518 err = mlx5_ib_odp_init_one(dev);
1519 if (err)
1520 goto err_rsrc;
1521
1522 err = ib_register_device(&dev->ib_dev, NULL);
1523 if (err)
1524 goto err_odp;
1525
1526 err = create_umr_res(dev);
1527 if (err)
1528 goto err_dev;
1529
1530 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
1531 err = device_create_file(&dev->ib_dev.dev,
1532 mlx5_class_attributes[i]);
1533 if (err)
1534 goto err_umrc;
1535 }
1536
1537 dev->ib_active = true;
1538
1539 return dev;
1540
1541 err_umrc:
1542 destroy_umrc_res(dev);
1543
1544 err_dev:
1545 ib_unregister_device(&dev->ib_dev);
1546
1547 err_odp:
1548 mlx5_ib_odp_remove_one(dev);
1549
1550 err_rsrc:
1551 destroy_dev_resources(&dev->devr);
1552
1553 err_dealloc:
1554 ib_dealloc_device((struct ib_device *)dev);
1555
1556 return NULL;
1557 }
1558
1559 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
1560 {
1561 struct mlx5_ib_dev *dev = context;
1562
1563 ib_unregister_device(&dev->ib_dev);
1564 destroy_umrc_res(dev);
1565 mlx5_ib_odp_remove_one(dev);
1566 destroy_dev_resources(&dev->devr);
1567 ib_dealloc_device(&dev->ib_dev);
1568 }
1569
1570 static struct mlx5_interface mlx5_ib_interface = {
1571 .add = mlx5_ib_add,
1572 .remove = mlx5_ib_remove,
1573 .event = mlx5_ib_event,
1574 .protocol = MLX5_INTERFACE_PROTOCOL_IB,
1575 };
1576
1577 static int __init mlx5_ib_init(void)
1578 {
1579 int err;
1580
1581 if (deprecated_prof_sel != 2)
1582 pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n");
1583
1584 err = mlx5_ib_odp_init();
1585 if (err)
1586 return err;
1587
1588 err = mlx5_register_interface(&mlx5_ib_interface);
1589 if (err)
1590 goto clean_odp;
1591
1592 return err;
1593
1594 clean_odp:
1595 mlx5_ib_odp_cleanup();
1596 return err;
1597 }
1598
1599 static void __exit mlx5_ib_cleanup(void)
1600 {
1601 mlx5_unregister_interface(&mlx5_ib_interface);
1602 mlx5_ib_odp_cleanup();
1603 }
1604
1605 module_init(mlx5_ib_init);
1606 module_exit(mlx5_ib_cleanup);
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