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ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value
[deliverable/linux.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 <linux/highmem.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 <rdma/ib_addr.h>
44 #include <rdma/ib_cache.h>
45 #include <linux/mlx5/port.h>
46 #include <linux/mlx5/vport.h>
47 #include <rdma/ib_smi.h>
48 #include <rdma/ib_umem.h>
49 #include <linux/in.h>
50 #include <linux/etherdevice.h>
51 #include <linux/mlx5/fs.h>
52 #include "user.h"
53 #include "mlx5_ib.h"
54
55 #define DRIVER_NAME "mlx5_ib"
56 #define DRIVER_VERSION "2.2-1"
57 #define DRIVER_RELDATE "Feb 2014"
58
59 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
60 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
61 MODULE_LICENSE("Dual BSD/GPL");
62 MODULE_VERSION(DRIVER_VERSION);
63
64 static int deprecated_prof_sel = 2;
65 module_param_named(prof_sel, deprecated_prof_sel, int, 0444);
66 MODULE_PARM_DESC(prof_sel, "profile selector. Deprecated here. Moved to module mlx5_core");
67
68 static char mlx5_version[] =
69 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
70 DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
71
72 enum {
73 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3,
74 };
75
76 static enum rdma_link_layer
77 mlx5_port_type_cap_to_rdma_ll(int port_type_cap)
78 {
79 switch (port_type_cap) {
80 case MLX5_CAP_PORT_TYPE_IB:
81 return IB_LINK_LAYER_INFINIBAND;
82 case MLX5_CAP_PORT_TYPE_ETH:
83 return IB_LINK_LAYER_ETHERNET;
84 default:
85 return IB_LINK_LAYER_UNSPECIFIED;
86 }
87 }
88
89 static enum rdma_link_layer
90 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num)
91 {
92 struct mlx5_ib_dev *dev = to_mdev(device);
93 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type);
94
95 return mlx5_port_type_cap_to_rdma_ll(port_type_cap);
96 }
97
98 static int mlx5_netdev_event(struct notifier_block *this,
99 unsigned long event, void *ptr)
100 {
101 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
102 struct mlx5_ib_dev *ibdev = container_of(this, struct mlx5_ib_dev,
103 roce.nb);
104
105 if ((event != NETDEV_UNREGISTER) && (event != NETDEV_REGISTER))
106 return NOTIFY_DONE;
107
108 write_lock(&ibdev->roce.netdev_lock);
109 if (ndev->dev.parent == &ibdev->mdev->pdev->dev)
110 ibdev->roce.netdev = (event == NETDEV_UNREGISTER) ? NULL : ndev;
111 write_unlock(&ibdev->roce.netdev_lock);
112
113 return NOTIFY_DONE;
114 }
115
116 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
117 u8 port_num)
118 {
119 struct mlx5_ib_dev *ibdev = to_mdev(device);
120 struct net_device *ndev;
121
122 /* Ensure ndev does not disappear before we invoke dev_hold()
123 */
124 read_lock(&ibdev->roce.netdev_lock);
125 ndev = ibdev->roce.netdev;
126 if (ndev)
127 dev_hold(ndev);
128 read_unlock(&ibdev->roce.netdev_lock);
129
130 return ndev;
131 }
132
133 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
134 struct ib_port_attr *props)
135 {
136 struct mlx5_ib_dev *dev = to_mdev(device);
137 struct net_device *ndev;
138 enum ib_mtu ndev_ib_mtu;
139 u16 qkey_viol_cntr;
140
141 memset(props, 0, sizeof(*props));
142
143 props->port_cap_flags |= IB_PORT_CM_SUP;
144 props->port_cap_flags |= IB_PORT_IP_BASED_GIDS;
145
146 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev,
147 roce_address_table_size);
148 props->max_mtu = IB_MTU_4096;
149 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
150 props->pkey_tbl_len = 1;
151 props->state = IB_PORT_DOWN;
152 props->phys_state = 3;
153
154 mlx5_query_nic_vport_qkey_viol_cntr(dev->mdev, &qkey_viol_cntr);
155 props->qkey_viol_cntr = qkey_viol_cntr;
156
157 ndev = mlx5_ib_get_netdev(device, port_num);
158 if (!ndev)
159 return 0;
160
161 if (netif_running(ndev) && netif_carrier_ok(ndev)) {
162 props->state = IB_PORT_ACTIVE;
163 props->phys_state = 5;
164 }
165
166 ndev_ib_mtu = iboe_get_mtu(ndev->mtu);
167
168 dev_put(ndev);
169
170 props->active_mtu = min(props->max_mtu, ndev_ib_mtu);
171
172 props->active_width = IB_WIDTH_4X; /* TODO */
173 props->active_speed = IB_SPEED_QDR; /* TODO */
174
175 return 0;
176 }
177
178 static void ib_gid_to_mlx5_roce_addr(const union ib_gid *gid,
179 const struct ib_gid_attr *attr,
180 void *mlx5_addr)
181 {
182 #define MLX5_SET_RA(p, f, v) MLX5_SET(roce_addr_layout, p, f, v)
183 char *mlx5_addr_l3_addr = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr,
184 source_l3_address);
185 void *mlx5_addr_mac = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr,
186 source_mac_47_32);
187
188 if (!gid)
189 return;
190
191 ether_addr_copy(mlx5_addr_mac, attr->ndev->dev_addr);
192
193 if (is_vlan_dev(attr->ndev)) {
194 MLX5_SET_RA(mlx5_addr, vlan_valid, 1);
195 MLX5_SET_RA(mlx5_addr, vlan_id, vlan_dev_vlan_id(attr->ndev));
196 }
197
198 switch (attr->gid_type) {
199 case IB_GID_TYPE_IB:
200 MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_1);
201 break;
202 case IB_GID_TYPE_ROCE_UDP_ENCAP:
203 MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_2);
204 break;
205
206 default:
207 WARN_ON(true);
208 }
209
210 if (attr->gid_type != IB_GID_TYPE_IB) {
211 if (ipv6_addr_v4mapped((void *)gid))
212 MLX5_SET_RA(mlx5_addr, roce_l3_type,
213 MLX5_ROCE_L3_TYPE_IPV4);
214 else
215 MLX5_SET_RA(mlx5_addr, roce_l3_type,
216 MLX5_ROCE_L3_TYPE_IPV6);
217 }
218
219 if ((attr->gid_type == IB_GID_TYPE_IB) ||
220 !ipv6_addr_v4mapped((void *)gid))
221 memcpy(mlx5_addr_l3_addr, gid, sizeof(*gid));
222 else
223 memcpy(&mlx5_addr_l3_addr[12], &gid->raw[12], 4);
224 }
225
226 static int set_roce_addr(struct ib_device *device, u8 port_num,
227 unsigned int index,
228 const union ib_gid *gid,
229 const struct ib_gid_attr *attr)
230 {
231 struct mlx5_ib_dev *dev = to_mdev(device);
232 u32 in[MLX5_ST_SZ_DW(set_roce_address_in)];
233 u32 out[MLX5_ST_SZ_DW(set_roce_address_out)];
234 void *in_addr = MLX5_ADDR_OF(set_roce_address_in, in, roce_address);
235 enum rdma_link_layer ll = mlx5_ib_port_link_layer(device, port_num);
236
237 if (ll != IB_LINK_LAYER_ETHERNET)
238 return -EINVAL;
239
240 memset(in, 0, sizeof(in));
241
242 ib_gid_to_mlx5_roce_addr(gid, attr, in_addr);
243
244 MLX5_SET(set_roce_address_in, in, roce_address_index, index);
245 MLX5_SET(set_roce_address_in, in, opcode, MLX5_CMD_OP_SET_ROCE_ADDRESS);
246
247 memset(out, 0, sizeof(out));
248 return mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
249 }
250
251 static int mlx5_ib_add_gid(struct ib_device *device, u8 port_num,
252 unsigned int index, const union ib_gid *gid,
253 const struct ib_gid_attr *attr,
254 __always_unused void **context)
255 {
256 return set_roce_addr(device, port_num, index, gid, attr);
257 }
258
259 static int mlx5_ib_del_gid(struct ib_device *device, u8 port_num,
260 unsigned int index, __always_unused void **context)
261 {
262 return set_roce_addr(device, port_num, index, NULL, NULL);
263 }
264
265 __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
266 int index)
267 {
268 struct ib_gid_attr attr;
269 union ib_gid gid;
270
271 if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr))
272 return 0;
273
274 if (!attr.ndev)
275 return 0;
276
277 dev_put(attr.ndev);
278
279 if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
280 return 0;
281
282 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
283 }
284
285 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
286 {
287 return !MLX5_CAP_GEN(dev->mdev, ib_virt);
288 }
289
290 enum {
291 MLX5_VPORT_ACCESS_METHOD_MAD,
292 MLX5_VPORT_ACCESS_METHOD_HCA,
293 MLX5_VPORT_ACCESS_METHOD_NIC,
294 };
295
296 static int mlx5_get_vport_access_method(struct ib_device *ibdev)
297 {
298 if (mlx5_use_mad_ifc(to_mdev(ibdev)))
299 return MLX5_VPORT_ACCESS_METHOD_MAD;
300
301 if (mlx5_ib_port_link_layer(ibdev, 1) ==
302 IB_LINK_LAYER_ETHERNET)
303 return MLX5_VPORT_ACCESS_METHOD_NIC;
304
305 return MLX5_VPORT_ACCESS_METHOD_HCA;
306 }
307
308 static void get_atomic_caps(struct mlx5_ib_dev *dev,
309 struct ib_device_attr *props)
310 {
311 u8 tmp;
312 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
313 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
314 u8 atomic_req_8B_endianness_mode =
315 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianess_mode);
316
317 /* Check if HW supports 8 bytes standard atomic operations and capable
318 * of host endianness respond
319 */
320 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD;
321 if (((atomic_operations & tmp) == tmp) &&
322 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) &&
323 (atomic_req_8B_endianness_mode)) {
324 props->atomic_cap = IB_ATOMIC_HCA;
325 } else {
326 props->atomic_cap = IB_ATOMIC_NONE;
327 }
328 }
329
330 static int mlx5_query_system_image_guid(struct ib_device *ibdev,
331 __be64 *sys_image_guid)
332 {
333 struct mlx5_ib_dev *dev = to_mdev(ibdev);
334 struct mlx5_core_dev *mdev = dev->mdev;
335 u64 tmp;
336 int err;
337
338 switch (mlx5_get_vport_access_method(ibdev)) {
339 case MLX5_VPORT_ACCESS_METHOD_MAD:
340 return mlx5_query_mad_ifc_system_image_guid(ibdev,
341 sys_image_guid);
342
343 case MLX5_VPORT_ACCESS_METHOD_HCA:
344 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
345 break;
346
347 case MLX5_VPORT_ACCESS_METHOD_NIC:
348 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
349 break;
350
351 default:
352 return -EINVAL;
353 }
354
355 if (!err)
356 *sys_image_guid = cpu_to_be64(tmp);
357
358 return err;
359
360 }
361
362 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
363 u16 *max_pkeys)
364 {
365 struct mlx5_ib_dev *dev = to_mdev(ibdev);
366 struct mlx5_core_dev *mdev = dev->mdev;
367
368 switch (mlx5_get_vport_access_method(ibdev)) {
369 case MLX5_VPORT_ACCESS_METHOD_MAD:
370 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
371
372 case MLX5_VPORT_ACCESS_METHOD_HCA:
373 case MLX5_VPORT_ACCESS_METHOD_NIC:
374 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
375 pkey_table_size));
376 return 0;
377
378 default:
379 return -EINVAL;
380 }
381 }
382
383 static int mlx5_query_vendor_id(struct ib_device *ibdev,
384 u32 *vendor_id)
385 {
386 struct mlx5_ib_dev *dev = to_mdev(ibdev);
387
388 switch (mlx5_get_vport_access_method(ibdev)) {
389 case MLX5_VPORT_ACCESS_METHOD_MAD:
390 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
391
392 case MLX5_VPORT_ACCESS_METHOD_HCA:
393 case MLX5_VPORT_ACCESS_METHOD_NIC:
394 return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
395
396 default:
397 return -EINVAL;
398 }
399 }
400
401 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
402 __be64 *node_guid)
403 {
404 u64 tmp;
405 int err;
406
407 switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
408 case MLX5_VPORT_ACCESS_METHOD_MAD:
409 return mlx5_query_mad_ifc_node_guid(dev, node_guid);
410
411 case MLX5_VPORT_ACCESS_METHOD_HCA:
412 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
413 break;
414
415 case MLX5_VPORT_ACCESS_METHOD_NIC:
416 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
417 break;
418
419 default:
420 return -EINVAL;
421 }
422
423 if (!err)
424 *node_guid = cpu_to_be64(tmp);
425
426 return err;
427 }
428
429 struct mlx5_reg_node_desc {
430 u8 desc[64];
431 };
432
433 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
434 {
435 struct mlx5_reg_node_desc in;
436
437 if (mlx5_use_mad_ifc(dev))
438 return mlx5_query_mad_ifc_node_desc(dev, node_desc);
439
440 memset(&in, 0, sizeof(in));
441
442 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
443 sizeof(struct mlx5_reg_node_desc),
444 MLX5_REG_NODE_DESC, 0, 0);
445 }
446
447 static int mlx5_ib_query_device(struct ib_device *ibdev,
448 struct ib_device_attr *props,
449 struct ib_udata *uhw)
450 {
451 struct mlx5_ib_dev *dev = to_mdev(ibdev);
452 struct mlx5_core_dev *mdev = dev->mdev;
453 int err = -ENOMEM;
454 int max_rq_sg;
455 int max_sq_sg;
456 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
457
458 if (uhw->inlen || uhw->outlen)
459 return -EINVAL;
460
461 memset(props, 0, sizeof(*props));
462 err = mlx5_query_system_image_guid(ibdev,
463 &props->sys_image_guid);
464 if (err)
465 return err;
466
467 err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
468 if (err)
469 return err;
470
471 err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
472 if (err)
473 return err;
474
475 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
476 (fw_rev_min(dev->mdev) << 16) |
477 fw_rev_sub(dev->mdev);
478 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
479 IB_DEVICE_PORT_ACTIVE_EVENT |
480 IB_DEVICE_SYS_IMAGE_GUID |
481 IB_DEVICE_RC_RNR_NAK_GEN;
482
483 if (MLX5_CAP_GEN(mdev, pkv))
484 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
485 if (MLX5_CAP_GEN(mdev, qkv))
486 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
487 if (MLX5_CAP_GEN(mdev, apm))
488 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
489 if (MLX5_CAP_GEN(mdev, xrc))
490 props->device_cap_flags |= IB_DEVICE_XRC;
491 if (MLX5_CAP_GEN(mdev, imaicl)) {
492 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW |
493 IB_DEVICE_MEM_WINDOW_TYPE_2B;
494 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
495 /* We support 'Gappy' memory registration too */
496 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
497 }
498 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
499 if (MLX5_CAP_GEN(mdev, sho)) {
500 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
501 /* At this stage no support for signature handover */
502 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
503 IB_PROT_T10DIF_TYPE_2 |
504 IB_PROT_T10DIF_TYPE_3;
505 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
506 IB_GUARD_T10DIF_CSUM;
507 }
508 if (MLX5_CAP_GEN(mdev, block_lb_mc))
509 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
510
511 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
512 (MLX5_CAP_ETH(dev->mdev, csum_cap)))
513 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
514
515 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
516 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
517 props->device_cap_flags |= IB_DEVICE_UD_TSO;
518 }
519
520 props->vendor_part_id = mdev->pdev->device;
521 props->hw_ver = mdev->pdev->revision;
522
523 props->max_mr_size = ~0ull;
524 props->page_size_cap = ~(min_page_size - 1);
525 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
526 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
527 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
528 sizeof(struct mlx5_wqe_data_seg);
529 max_sq_sg = (MLX5_CAP_GEN(mdev, max_wqe_sz_sq) -
530 sizeof(struct mlx5_wqe_ctrl_seg)) /
531 sizeof(struct mlx5_wqe_data_seg);
532 props->max_sge = min(max_rq_sg, max_sq_sg);
533 props->max_sge_rd = props->max_sge;
534 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
535 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1;
536 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
537 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
538 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
539 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
540 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
541 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
542 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
543 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
544 props->max_srq_sge = max_rq_sg - 1;
545 props->max_fast_reg_page_list_len =
546 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size);
547 get_atomic_caps(dev, props);
548 props->masked_atomic_cap = IB_ATOMIC_NONE;
549 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
550 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
551 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
552 props->max_mcast_grp;
553 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
554 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
555 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
556
557 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
558 if (MLX5_CAP_GEN(mdev, pg))
559 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
560 props->odp_caps = dev->odp_caps;
561 #endif
562
563 if (MLX5_CAP_GEN(mdev, cd))
564 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL;
565
566 if (!mlx5_core_is_pf(mdev))
567 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
568
569 return 0;
570 }
571
572 enum mlx5_ib_width {
573 MLX5_IB_WIDTH_1X = 1 << 0,
574 MLX5_IB_WIDTH_2X = 1 << 1,
575 MLX5_IB_WIDTH_4X = 1 << 2,
576 MLX5_IB_WIDTH_8X = 1 << 3,
577 MLX5_IB_WIDTH_12X = 1 << 4
578 };
579
580 static int translate_active_width(struct ib_device *ibdev, u8 active_width,
581 u8 *ib_width)
582 {
583 struct mlx5_ib_dev *dev = to_mdev(ibdev);
584 int err = 0;
585
586 if (active_width & MLX5_IB_WIDTH_1X) {
587 *ib_width = IB_WIDTH_1X;
588 } else if (active_width & MLX5_IB_WIDTH_2X) {
589 mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n",
590 (int)active_width);
591 err = -EINVAL;
592 } else if (active_width & MLX5_IB_WIDTH_4X) {
593 *ib_width = IB_WIDTH_4X;
594 } else if (active_width & MLX5_IB_WIDTH_8X) {
595 *ib_width = IB_WIDTH_8X;
596 } else if (active_width & MLX5_IB_WIDTH_12X) {
597 *ib_width = IB_WIDTH_12X;
598 } else {
599 mlx5_ib_dbg(dev, "Invalid active_width %d\n",
600 (int)active_width);
601 err = -EINVAL;
602 }
603
604 return err;
605 }
606
607 static int mlx5_mtu_to_ib_mtu(int mtu)
608 {
609 switch (mtu) {
610 case 256: return 1;
611 case 512: return 2;
612 case 1024: return 3;
613 case 2048: return 4;
614 case 4096: return 5;
615 default:
616 pr_warn("invalid mtu\n");
617 return -1;
618 }
619 }
620
621 enum ib_max_vl_num {
622 __IB_MAX_VL_0 = 1,
623 __IB_MAX_VL_0_1 = 2,
624 __IB_MAX_VL_0_3 = 3,
625 __IB_MAX_VL_0_7 = 4,
626 __IB_MAX_VL_0_14 = 5,
627 };
628
629 enum mlx5_vl_hw_cap {
630 MLX5_VL_HW_0 = 1,
631 MLX5_VL_HW_0_1 = 2,
632 MLX5_VL_HW_0_2 = 3,
633 MLX5_VL_HW_0_3 = 4,
634 MLX5_VL_HW_0_4 = 5,
635 MLX5_VL_HW_0_5 = 6,
636 MLX5_VL_HW_0_6 = 7,
637 MLX5_VL_HW_0_7 = 8,
638 MLX5_VL_HW_0_14 = 15
639 };
640
641 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
642 u8 *max_vl_num)
643 {
644 switch (vl_hw_cap) {
645 case MLX5_VL_HW_0:
646 *max_vl_num = __IB_MAX_VL_0;
647 break;
648 case MLX5_VL_HW_0_1:
649 *max_vl_num = __IB_MAX_VL_0_1;
650 break;
651 case MLX5_VL_HW_0_3:
652 *max_vl_num = __IB_MAX_VL_0_3;
653 break;
654 case MLX5_VL_HW_0_7:
655 *max_vl_num = __IB_MAX_VL_0_7;
656 break;
657 case MLX5_VL_HW_0_14:
658 *max_vl_num = __IB_MAX_VL_0_14;
659 break;
660
661 default:
662 return -EINVAL;
663 }
664
665 return 0;
666 }
667
668 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
669 struct ib_port_attr *props)
670 {
671 struct mlx5_ib_dev *dev = to_mdev(ibdev);
672 struct mlx5_core_dev *mdev = dev->mdev;
673 struct mlx5_hca_vport_context *rep;
674 int max_mtu;
675 int oper_mtu;
676 int err;
677 u8 ib_link_width_oper;
678 u8 vl_hw_cap;
679
680 rep = kzalloc(sizeof(*rep), GFP_KERNEL);
681 if (!rep) {
682 err = -ENOMEM;
683 goto out;
684 }
685
686 memset(props, 0, sizeof(*props));
687
688 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
689 if (err)
690 goto out;
691
692 props->lid = rep->lid;
693 props->lmc = rep->lmc;
694 props->sm_lid = rep->sm_lid;
695 props->sm_sl = rep->sm_sl;
696 props->state = rep->vport_state;
697 props->phys_state = rep->port_physical_state;
698 props->port_cap_flags = rep->cap_mask1;
699 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
700 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
701 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
702 props->bad_pkey_cntr = rep->pkey_violation_counter;
703 props->qkey_viol_cntr = rep->qkey_violation_counter;
704 props->subnet_timeout = rep->subnet_timeout;
705 props->init_type_reply = rep->init_type_reply;
706 props->grh_required = rep->grh_required;
707
708 err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port);
709 if (err)
710 goto out;
711
712 err = translate_active_width(ibdev, ib_link_width_oper,
713 &props->active_width);
714 if (err)
715 goto out;
716 err = mlx5_query_port_proto_oper(mdev, &props->active_speed, MLX5_PTYS_IB,
717 port);
718 if (err)
719 goto out;
720
721 mlx5_query_port_max_mtu(mdev, &max_mtu, port);
722
723 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
724
725 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
726
727 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
728
729 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
730 if (err)
731 goto out;
732
733 err = translate_max_vl_num(ibdev, vl_hw_cap,
734 &props->max_vl_num);
735 out:
736 kfree(rep);
737 return err;
738 }
739
740 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
741 struct ib_port_attr *props)
742 {
743 switch (mlx5_get_vport_access_method(ibdev)) {
744 case MLX5_VPORT_ACCESS_METHOD_MAD:
745 return mlx5_query_mad_ifc_port(ibdev, port, props);
746
747 case MLX5_VPORT_ACCESS_METHOD_HCA:
748 return mlx5_query_hca_port(ibdev, port, props);
749
750 case MLX5_VPORT_ACCESS_METHOD_NIC:
751 return mlx5_query_port_roce(ibdev, port, props);
752
753 default:
754 return -EINVAL;
755 }
756 }
757
758 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
759 union ib_gid *gid)
760 {
761 struct mlx5_ib_dev *dev = to_mdev(ibdev);
762 struct mlx5_core_dev *mdev = dev->mdev;
763
764 switch (mlx5_get_vport_access_method(ibdev)) {
765 case MLX5_VPORT_ACCESS_METHOD_MAD:
766 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
767
768 case MLX5_VPORT_ACCESS_METHOD_HCA:
769 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
770
771 default:
772 return -EINVAL;
773 }
774
775 }
776
777 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
778 u16 *pkey)
779 {
780 struct mlx5_ib_dev *dev = to_mdev(ibdev);
781 struct mlx5_core_dev *mdev = dev->mdev;
782
783 switch (mlx5_get_vport_access_method(ibdev)) {
784 case MLX5_VPORT_ACCESS_METHOD_MAD:
785 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
786
787 case MLX5_VPORT_ACCESS_METHOD_HCA:
788 case MLX5_VPORT_ACCESS_METHOD_NIC:
789 return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index,
790 pkey);
791 default:
792 return -EINVAL;
793 }
794 }
795
796 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
797 struct ib_device_modify *props)
798 {
799 struct mlx5_ib_dev *dev = to_mdev(ibdev);
800 struct mlx5_reg_node_desc in;
801 struct mlx5_reg_node_desc out;
802 int err;
803
804 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
805 return -EOPNOTSUPP;
806
807 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
808 return 0;
809
810 /*
811 * If possible, pass node desc to FW, so it can generate
812 * a 144 trap. If cmd fails, just ignore.
813 */
814 memcpy(&in, props->node_desc, 64);
815 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
816 sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
817 if (err)
818 return err;
819
820 memcpy(ibdev->node_desc, props->node_desc, 64);
821
822 return err;
823 }
824
825 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
826 struct ib_port_modify *props)
827 {
828 struct mlx5_ib_dev *dev = to_mdev(ibdev);
829 struct ib_port_attr attr;
830 u32 tmp;
831 int err;
832
833 mutex_lock(&dev->cap_mask_mutex);
834
835 err = mlx5_ib_query_port(ibdev, port, &attr);
836 if (err)
837 goto out;
838
839 tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
840 ~props->clr_port_cap_mask;
841
842 err = mlx5_set_port_caps(dev->mdev, port, tmp);
843
844 out:
845 mutex_unlock(&dev->cap_mask_mutex);
846 return err;
847 }
848
849 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
850 struct ib_udata *udata)
851 {
852 struct mlx5_ib_dev *dev = to_mdev(ibdev);
853 struct mlx5_ib_alloc_ucontext_req_v2 req = {};
854 struct mlx5_ib_alloc_ucontext_resp resp = {};
855 struct mlx5_ib_ucontext *context;
856 struct mlx5_uuar_info *uuari;
857 struct mlx5_uar *uars;
858 int gross_uuars;
859 int num_uars;
860 int ver;
861 int uuarn;
862 int err;
863 int i;
864 size_t reqlen;
865 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2,
866 max_cqe_version);
867
868 if (!dev->ib_active)
869 return ERR_PTR(-EAGAIN);
870
871 if (udata->inlen < sizeof(struct ib_uverbs_cmd_hdr))
872 return ERR_PTR(-EINVAL);
873
874 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr);
875 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
876 ver = 0;
877 else if (reqlen >= min_req_v2)
878 ver = 2;
879 else
880 return ERR_PTR(-EINVAL);
881
882 err = ib_copy_from_udata(&req, udata, min(reqlen, sizeof(req)));
883 if (err)
884 return ERR_PTR(err);
885
886 if (req.flags)
887 return ERR_PTR(-EINVAL);
888
889 if (req.total_num_uuars > MLX5_MAX_UUARS)
890 return ERR_PTR(-ENOMEM);
891
892 if (req.total_num_uuars == 0)
893 return ERR_PTR(-EINVAL);
894
895 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2)
896 return ERR_PTR(-EOPNOTSUPP);
897
898 if (reqlen > sizeof(req) &&
899 !ib_is_udata_cleared(udata, sizeof(req),
900 reqlen - sizeof(req)))
901 return ERR_PTR(-EOPNOTSUPP);
902
903 req.total_num_uuars = ALIGN(req.total_num_uuars,
904 MLX5_NON_FP_BF_REGS_PER_PAGE);
905 if (req.num_low_latency_uuars > req.total_num_uuars - 1)
906 return ERR_PTR(-EINVAL);
907
908 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE;
909 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE;
910 resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
911 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
912 resp.cache_line_size = L1_CACHE_BYTES;
913 resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
914 resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
915 resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
916 resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
917 resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
918 resp.cqe_version = min_t(__u8,
919 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version),
920 req.max_cqe_version);
921 resp.response_length = min(offsetof(typeof(resp), response_length) +
922 sizeof(resp.response_length), udata->outlen);
923
924 context = kzalloc(sizeof(*context), GFP_KERNEL);
925 if (!context)
926 return ERR_PTR(-ENOMEM);
927
928 uuari = &context->uuari;
929 mutex_init(&uuari->lock);
930 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
931 if (!uars) {
932 err = -ENOMEM;
933 goto out_ctx;
934 }
935
936 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars),
937 sizeof(*uuari->bitmap),
938 GFP_KERNEL);
939 if (!uuari->bitmap) {
940 err = -ENOMEM;
941 goto out_uar_ctx;
942 }
943 /*
944 * clear all fast path uuars
945 */
946 for (i = 0; i < gross_uuars; i++) {
947 uuarn = i & 3;
948 if (uuarn == 2 || uuarn == 3)
949 set_bit(i, uuari->bitmap);
950 }
951
952 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL);
953 if (!uuari->count) {
954 err = -ENOMEM;
955 goto out_bitmap;
956 }
957
958 for (i = 0; i < num_uars; i++) {
959 err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index);
960 if (err)
961 goto out_count;
962 }
963
964 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
965 context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
966 #endif
967
968 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) {
969 err = mlx5_core_alloc_transport_domain(dev->mdev,
970 &context->tdn);
971 if (err)
972 goto out_uars;
973 }
974
975 INIT_LIST_HEAD(&context->db_page_list);
976 mutex_init(&context->db_page_mutex);
977
978 resp.tot_uuars = req.total_num_uuars;
979 resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports);
980
981 if (field_avail(typeof(resp), cqe_version, udata->outlen))
982 resp.response_length += sizeof(resp.cqe_version);
983
984 if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) {
985 resp.comp_mask |=
986 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
987 resp.hca_core_clock_offset =
988 offsetof(struct mlx5_init_seg, internal_timer_h) %
989 PAGE_SIZE;
990 resp.response_length += sizeof(resp.hca_core_clock_offset) +
991 sizeof(resp.reserved2) +
992 sizeof(resp.reserved3);
993 }
994
995 err = ib_copy_to_udata(udata, &resp, resp.response_length);
996 if (err)
997 goto out_td;
998
999 uuari->ver = ver;
1000 uuari->num_low_latency_uuars = req.num_low_latency_uuars;
1001 uuari->uars = uars;
1002 uuari->num_uars = num_uars;
1003 context->cqe_version = resp.cqe_version;
1004
1005 return &context->ibucontext;
1006
1007 out_td:
1008 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1009 mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn);
1010
1011 out_uars:
1012 for (i--; i >= 0; i--)
1013 mlx5_cmd_free_uar(dev->mdev, uars[i].index);
1014 out_count:
1015 kfree(uuari->count);
1016
1017 out_bitmap:
1018 kfree(uuari->bitmap);
1019
1020 out_uar_ctx:
1021 kfree(uars);
1022
1023 out_ctx:
1024 kfree(context);
1025 return ERR_PTR(err);
1026 }
1027
1028 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1029 {
1030 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1031 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1032 struct mlx5_uuar_info *uuari = &context->uuari;
1033 int i;
1034
1035 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1036 mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn);
1037
1038 for (i = 0; i < uuari->num_uars; i++) {
1039 if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index))
1040 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
1041 }
1042
1043 kfree(uuari->count);
1044 kfree(uuari->bitmap);
1045 kfree(uuari->uars);
1046 kfree(context);
1047
1048 return 0;
1049 }
1050
1051 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
1052 {
1053 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index;
1054 }
1055
1056 static int get_command(unsigned long offset)
1057 {
1058 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
1059 }
1060
1061 static int get_arg(unsigned long offset)
1062 {
1063 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
1064 }
1065
1066 static int get_index(unsigned long offset)
1067 {
1068 return get_arg(offset);
1069 }
1070
1071 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
1072 {
1073 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1074 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1075 struct mlx5_uuar_info *uuari = &context->uuari;
1076 unsigned long command;
1077 unsigned long idx;
1078 phys_addr_t pfn;
1079
1080 command = get_command(vma->vm_pgoff);
1081 switch (command) {
1082 case MLX5_IB_MMAP_REGULAR_PAGE:
1083 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1084 return -EINVAL;
1085
1086 idx = get_index(vma->vm_pgoff);
1087 if (idx >= uuari->num_uars)
1088 return -EINVAL;
1089
1090 pfn = uar_index2pfn(dev, uuari->uars[idx].index);
1091 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
1092 (unsigned long long)pfn);
1093
1094 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1095 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
1096 PAGE_SIZE, vma->vm_page_prot))
1097 return -EAGAIN;
1098
1099 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
1100 vma->vm_start,
1101 (unsigned long long)pfn << PAGE_SHIFT);
1102 break;
1103
1104 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
1105 return -ENOSYS;
1106
1107 case MLX5_IB_MMAP_CORE_CLOCK:
1108 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1109 return -EINVAL;
1110
1111 if (vma->vm_flags & (VM_WRITE | VM_EXEC))
1112 return -EPERM;
1113
1114 /* Don't expose to user-space information it shouldn't have */
1115 if (PAGE_SIZE > 4096)
1116 return -EOPNOTSUPP;
1117
1118 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1119 pfn = (dev->mdev->iseg_base +
1120 offsetof(struct mlx5_init_seg, internal_timer_h)) >>
1121 PAGE_SHIFT;
1122 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
1123 PAGE_SIZE, vma->vm_page_prot))
1124 return -EAGAIN;
1125
1126 mlx5_ib_dbg(dev, "mapped internal timer at 0x%lx, PA 0x%llx\n",
1127 vma->vm_start,
1128 (unsigned long long)pfn << PAGE_SHIFT);
1129 break;
1130
1131 default:
1132 return -EINVAL;
1133 }
1134
1135 return 0;
1136 }
1137
1138 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
1139 struct ib_ucontext *context,
1140 struct ib_udata *udata)
1141 {
1142 struct mlx5_ib_alloc_pd_resp resp;
1143 struct mlx5_ib_pd *pd;
1144 int err;
1145
1146 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
1147 if (!pd)
1148 return ERR_PTR(-ENOMEM);
1149
1150 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn);
1151 if (err) {
1152 kfree(pd);
1153 return ERR_PTR(err);
1154 }
1155
1156 if (context) {
1157 resp.pdn = pd->pdn;
1158 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
1159 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
1160 kfree(pd);
1161 return ERR_PTR(-EFAULT);
1162 }
1163 }
1164
1165 return &pd->ibpd;
1166 }
1167
1168 static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
1169 {
1170 struct mlx5_ib_dev *mdev = to_mdev(pd->device);
1171 struct mlx5_ib_pd *mpd = to_mpd(pd);
1172
1173 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn);
1174 kfree(mpd);
1175
1176 return 0;
1177 }
1178
1179 static bool outer_header_zero(u32 *match_criteria)
1180 {
1181 int size = MLX5_ST_SZ_BYTES(fte_match_param);
1182 char *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_criteria,
1183 outer_headers);
1184
1185 return outer_headers_c[0] == 0 && !memcmp(outer_headers_c,
1186 outer_headers_c + 1,
1187 size - 1);
1188 }
1189
1190 static int parse_flow_attr(u32 *match_c, u32 *match_v,
1191 union ib_flow_spec *ib_spec)
1192 {
1193 void *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
1194 outer_headers);
1195 void *outer_headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
1196 outer_headers);
1197 switch (ib_spec->type) {
1198 case IB_FLOW_SPEC_ETH:
1199 if (ib_spec->size != sizeof(ib_spec->eth))
1200 return -EINVAL;
1201
1202 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
1203 dmac_47_16),
1204 ib_spec->eth.mask.dst_mac);
1205 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
1206 dmac_47_16),
1207 ib_spec->eth.val.dst_mac);
1208
1209 if (ib_spec->eth.mask.vlan_tag) {
1210 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
1211 vlan_tag, 1);
1212 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
1213 vlan_tag, 1);
1214
1215 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
1216 first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
1217 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
1218 first_vid, ntohs(ib_spec->eth.val.vlan_tag));
1219
1220 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
1221 first_cfi,
1222 ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
1223 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
1224 first_cfi,
1225 ntohs(ib_spec->eth.val.vlan_tag) >> 12);
1226
1227 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
1228 first_prio,
1229 ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
1230 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
1231 first_prio,
1232 ntohs(ib_spec->eth.val.vlan_tag) >> 13);
1233 }
1234 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
1235 ethertype, ntohs(ib_spec->eth.mask.ether_type));
1236 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
1237 ethertype, ntohs(ib_spec->eth.val.ether_type));
1238 break;
1239 case IB_FLOW_SPEC_IPV4:
1240 if (ib_spec->size != sizeof(ib_spec->ipv4))
1241 return -EINVAL;
1242
1243 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
1244 ethertype, 0xffff);
1245 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
1246 ethertype, ETH_P_IP);
1247
1248 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
1249 src_ipv4_src_ipv6.ipv4_layout.ipv4),
1250 &ib_spec->ipv4.mask.src_ip,
1251 sizeof(ib_spec->ipv4.mask.src_ip));
1252 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
1253 src_ipv4_src_ipv6.ipv4_layout.ipv4),
1254 &ib_spec->ipv4.val.src_ip,
1255 sizeof(ib_spec->ipv4.val.src_ip));
1256 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
1257 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1258 &ib_spec->ipv4.mask.dst_ip,
1259 sizeof(ib_spec->ipv4.mask.dst_ip));
1260 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
1261 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1262 &ib_spec->ipv4.val.dst_ip,
1263 sizeof(ib_spec->ipv4.val.dst_ip));
1264 break;
1265 case IB_FLOW_SPEC_TCP:
1266 if (ib_spec->size != sizeof(ib_spec->tcp_udp))
1267 return -EINVAL;
1268
1269 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
1270 0xff);
1271 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
1272 IPPROTO_TCP);
1273
1274 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport,
1275 ntohs(ib_spec->tcp_udp.mask.src_port));
1276 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_sport,
1277 ntohs(ib_spec->tcp_udp.val.src_port));
1278
1279 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport,
1280 ntohs(ib_spec->tcp_udp.mask.dst_port));
1281 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_dport,
1282 ntohs(ib_spec->tcp_udp.val.dst_port));
1283 break;
1284 case IB_FLOW_SPEC_UDP:
1285 if (ib_spec->size != sizeof(ib_spec->tcp_udp))
1286 return -EINVAL;
1287
1288 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
1289 0xff);
1290 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
1291 IPPROTO_UDP);
1292
1293 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_sport,
1294 ntohs(ib_spec->tcp_udp.mask.src_port));
1295 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_sport,
1296 ntohs(ib_spec->tcp_udp.val.src_port));
1297
1298 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_dport,
1299 ntohs(ib_spec->tcp_udp.mask.dst_port));
1300 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_dport,
1301 ntohs(ib_spec->tcp_udp.val.dst_port));
1302 break;
1303 default:
1304 return -EINVAL;
1305 }
1306
1307 return 0;
1308 }
1309
1310 /* If a flow could catch both multicast and unicast packets,
1311 * it won't fall into the multicast flow steering table and this rule
1312 * could steal other multicast packets.
1313 */
1314 static bool flow_is_multicast_only(struct ib_flow_attr *ib_attr)
1315 {
1316 struct ib_flow_spec_eth *eth_spec;
1317
1318 if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
1319 ib_attr->size < sizeof(struct ib_flow_attr) +
1320 sizeof(struct ib_flow_spec_eth) ||
1321 ib_attr->num_of_specs < 1)
1322 return false;
1323
1324 eth_spec = (struct ib_flow_spec_eth *)(ib_attr + 1);
1325 if (eth_spec->type != IB_FLOW_SPEC_ETH ||
1326 eth_spec->size != sizeof(*eth_spec))
1327 return false;
1328
1329 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
1330 is_multicast_ether_addr(eth_spec->val.dst_mac);
1331 }
1332
1333 static bool is_valid_attr(struct ib_flow_attr *flow_attr)
1334 {
1335 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1336 bool has_ipv4_spec = false;
1337 bool eth_type_ipv4 = true;
1338 unsigned int spec_index;
1339
1340 /* Validate that ethertype is correct */
1341 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
1342 if (ib_spec->type == IB_FLOW_SPEC_ETH &&
1343 ib_spec->eth.mask.ether_type) {
1344 if (!((ib_spec->eth.mask.ether_type == htons(0xffff)) &&
1345 ib_spec->eth.val.ether_type == htons(ETH_P_IP)))
1346 eth_type_ipv4 = false;
1347 } else if (ib_spec->type == IB_FLOW_SPEC_IPV4) {
1348 has_ipv4_spec = true;
1349 }
1350 ib_spec = (void *)ib_spec + ib_spec->size;
1351 }
1352 return !has_ipv4_spec || eth_type_ipv4;
1353 }
1354
1355 static void put_flow_table(struct mlx5_ib_dev *dev,
1356 struct mlx5_ib_flow_prio *prio, bool ft_added)
1357 {
1358 prio->refcount -= !!ft_added;
1359 if (!prio->refcount) {
1360 mlx5_destroy_flow_table(prio->flow_table);
1361 prio->flow_table = NULL;
1362 }
1363 }
1364
1365 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
1366 {
1367 struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device);
1368 struct mlx5_ib_flow_handler *handler = container_of(flow_id,
1369 struct mlx5_ib_flow_handler,
1370 ibflow);
1371 struct mlx5_ib_flow_handler *iter, *tmp;
1372
1373 mutex_lock(&dev->flow_db.lock);
1374
1375 list_for_each_entry_safe(iter, tmp, &handler->list, list) {
1376 mlx5_del_flow_rule(iter->rule);
1377 list_del(&iter->list);
1378 kfree(iter);
1379 }
1380
1381 mlx5_del_flow_rule(handler->rule);
1382 put_flow_table(dev, &dev->flow_db.prios[handler->prio], true);
1383 mutex_unlock(&dev->flow_db.lock);
1384
1385 kfree(handler);
1386
1387 return 0;
1388 }
1389
1390 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
1391 {
1392 priority *= 2;
1393 if (!dont_trap)
1394 priority++;
1395 return priority;
1396 }
1397
1398 #define MLX5_FS_MAX_TYPES 10
1399 #define MLX5_FS_MAX_ENTRIES 32000UL
1400 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
1401 struct ib_flow_attr *flow_attr)
1402 {
1403 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
1404 struct mlx5_flow_namespace *ns = NULL;
1405 struct mlx5_ib_flow_prio *prio;
1406 struct mlx5_flow_table *ft;
1407 int num_entries;
1408 int num_groups;
1409 int priority;
1410 int err = 0;
1411
1412 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1413 if (flow_is_multicast_only(flow_attr) &&
1414 !dont_trap)
1415 priority = MLX5_IB_FLOW_MCAST_PRIO;
1416 else
1417 priority = ib_prio_to_core_prio(flow_attr->priority,
1418 dont_trap);
1419 ns = mlx5_get_flow_namespace(dev->mdev,
1420 MLX5_FLOW_NAMESPACE_BYPASS);
1421 num_entries = MLX5_FS_MAX_ENTRIES;
1422 num_groups = MLX5_FS_MAX_TYPES;
1423 prio = &dev->flow_db.prios[priority];
1424 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1425 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
1426 ns = mlx5_get_flow_namespace(dev->mdev,
1427 MLX5_FLOW_NAMESPACE_LEFTOVERS);
1428 build_leftovers_ft_param(&priority,
1429 &num_entries,
1430 &num_groups);
1431 prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
1432 }
1433
1434 if (!ns)
1435 return ERR_PTR(-ENOTSUPP);
1436
1437 ft = prio->flow_table;
1438 if (!ft) {
1439 ft = mlx5_create_auto_grouped_flow_table(ns, priority,
1440 num_entries,
1441 num_groups);
1442
1443 if (!IS_ERR(ft)) {
1444 prio->refcount = 0;
1445 prio->flow_table = ft;
1446 } else {
1447 err = PTR_ERR(ft);
1448 }
1449 }
1450
1451 return err ? ERR_PTR(err) : prio;
1452 }
1453
1454 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
1455 struct mlx5_ib_flow_prio *ft_prio,
1456 struct ib_flow_attr *flow_attr,
1457 struct mlx5_flow_destination *dst)
1458 {
1459 struct mlx5_flow_table *ft = ft_prio->flow_table;
1460 struct mlx5_ib_flow_handler *handler;
1461 void *ib_flow = flow_attr + 1;
1462 u8 match_criteria_enable = 0;
1463 unsigned int spec_index;
1464 u32 *match_c;
1465 u32 *match_v;
1466 u32 action;
1467 int err = 0;
1468
1469 if (!is_valid_attr(flow_attr))
1470 return ERR_PTR(-EINVAL);
1471
1472 match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
1473 match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
1474 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
1475 if (!handler || !match_c || !match_v) {
1476 err = -ENOMEM;
1477 goto free;
1478 }
1479
1480 INIT_LIST_HEAD(&handler->list);
1481
1482 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
1483 err = parse_flow_attr(match_c, match_v, ib_flow);
1484 if (err < 0)
1485 goto free;
1486
1487 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
1488 }
1489
1490 /* Outer header support only */
1491 match_criteria_enable = (!outer_header_zero(match_c)) << 0;
1492 action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
1493 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
1494 handler->rule = mlx5_add_flow_rule(ft, match_criteria_enable,
1495 match_c, match_v,
1496 action,
1497 MLX5_FS_DEFAULT_FLOW_TAG,
1498 dst);
1499
1500 if (IS_ERR(handler->rule)) {
1501 err = PTR_ERR(handler->rule);
1502 goto free;
1503 }
1504
1505 handler->prio = ft_prio - dev->flow_db.prios;
1506
1507 ft_prio->flow_table = ft;
1508 free:
1509 if (err)
1510 kfree(handler);
1511 kfree(match_c);
1512 kfree(match_v);
1513 return err ? ERR_PTR(err) : handler;
1514 }
1515
1516 static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev,
1517 struct mlx5_ib_flow_prio *ft_prio,
1518 struct ib_flow_attr *flow_attr,
1519 struct mlx5_flow_destination *dst)
1520 {
1521 struct mlx5_ib_flow_handler *handler_dst = NULL;
1522 struct mlx5_ib_flow_handler *handler = NULL;
1523
1524 handler = create_flow_rule(dev, ft_prio, flow_attr, NULL);
1525 if (!IS_ERR(handler)) {
1526 handler_dst = create_flow_rule(dev, ft_prio,
1527 flow_attr, dst);
1528 if (IS_ERR(handler_dst)) {
1529 mlx5_del_flow_rule(handler->rule);
1530 kfree(handler);
1531 handler = handler_dst;
1532 } else {
1533 list_add(&handler_dst->list, &handler->list);
1534 }
1535 }
1536
1537 return handler;
1538 }
1539 enum {
1540 LEFTOVERS_MC,
1541 LEFTOVERS_UC,
1542 };
1543
1544 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
1545 struct mlx5_ib_flow_prio *ft_prio,
1546 struct ib_flow_attr *flow_attr,
1547 struct mlx5_flow_destination *dst)
1548 {
1549 struct mlx5_ib_flow_handler *handler_ucast = NULL;
1550 struct mlx5_ib_flow_handler *handler = NULL;
1551
1552 static struct {
1553 struct ib_flow_attr flow_attr;
1554 struct ib_flow_spec_eth eth_flow;
1555 } leftovers_specs[] = {
1556 [LEFTOVERS_MC] = {
1557 .flow_attr = {
1558 .num_of_specs = 1,
1559 .size = sizeof(leftovers_specs[0])
1560 },
1561 .eth_flow = {
1562 .type = IB_FLOW_SPEC_ETH,
1563 .size = sizeof(struct ib_flow_spec_eth),
1564 .mask = {.dst_mac = {0x1} },
1565 .val = {.dst_mac = {0x1} }
1566 }
1567 },
1568 [LEFTOVERS_UC] = {
1569 .flow_attr = {
1570 .num_of_specs = 1,
1571 .size = sizeof(leftovers_specs[0])
1572 },
1573 .eth_flow = {
1574 .type = IB_FLOW_SPEC_ETH,
1575 .size = sizeof(struct ib_flow_spec_eth),
1576 .mask = {.dst_mac = {0x1} },
1577 .val = {.dst_mac = {} }
1578 }
1579 }
1580 };
1581
1582 handler = create_flow_rule(dev, ft_prio,
1583 &leftovers_specs[LEFTOVERS_MC].flow_attr,
1584 dst);
1585 if (!IS_ERR(handler) &&
1586 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
1587 handler_ucast = create_flow_rule(dev, ft_prio,
1588 &leftovers_specs[LEFTOVERS_UC].flow_attr,
1589 dst);
1590 if (IS_ERR(handler_ucast)) {
1591 kfree(handler);
1592 handler = handler_ucast;
1593 } else {
1594 list_add(&handler_ucast->list, &handler->list);
1595 }
1596 }
1597
1598 return handler;
1599 }
1600
1601 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
1602 struct ib_flow_attr *flow_attr,
1603 int domain)
1604 {
1605 struct mlx5_ib_dev *dev = to_mdev(qp->device);
1606 struct mlx5_ib_flow_handler *handler = NULL;
1607 struct mlx5_flow_destination *dst = NULL;
1608 struct mlx5_ib_flow_prio *ft_prio;
1609 int err;
1610
1611 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO)
1612 return ERR_PTR(-ENOSPC);
1613
1614 if (domain != IB_FLOW_DOMAIN_USER ||
1615 flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) ||
1616 (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP))
1617 return ERR_PTR(-EINVAL);
1618
1619 dst = kzalloc(sizeof(*dst), GFP_KERNEL);
1620 if (!dst)
1621 return ERR_PTR(-ENOMEM);
1622
1623 mutex_lock(&dev->flow_db.lock);
1624
1625 ft_prio = get_flow_table(dev, flow_attr);
1626 if (IS_ERR(ft_prio)) {
1627 err = PTR_ERR(ft_prio);
1628 goto unlock;
1629 }
1630
1631 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1632 dst->tir_num = to_mqp(qp)->raw_packet_qp.rq.tirn;
1633
1634 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1635 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) {
1636 handler = create_dont_trap_rule(dev, ft_prio,
1637 flow_attr, dst);
1638 } else {
1639 handler = create_flow_rule(dev, ft_prio, flow_attr,
1640 dst);
1641 }
1642 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1643 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
1644 handler = create_leftovers_rule(dev, ft_prio, flow_attr,
1645 dst);
1646 } else {
1647 err = -EINVAL;
1648 goto destroy_ft;
1649 }
1650
1651 if (IS_ERR(handler)) {
1652 err = PTR_ERR(handler);
1653 handler = NULL;
1654 goto destroy_ft;
1655 }
1656
1657 ft_prio->refcount++;
1658 mutex_unlock(&dev->flow_db.lock);
1659 kfree(dst);
1660
1661 return &handler->ibflow;
1662
1663 destroy_ft:
1664 put_flow_table(dev, ft_prio, false);
1665 unlock:
1666 mutex_unlock(&dev->flow_db.lock);
1667 kfree(dst);
1668 kfree(handler);
1669 return ERR_PTR(err);
1670 }
1671
1672 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1673 {
1674 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
1675 int err;
1676
1677 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
1678 if (err)
1679 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
1680 ibqp->qp_num, gid->raw);
1681
1682 return err;
1683 }
1684
1685 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1686 {
1687 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
1688 int err;
1689
1690 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
1691 if (err)
1692 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
1693 ibqp->qp_num, gid->raw);
1694
1695 return err;
1696 }
1697
1698 static int init_node_data(struct mlx5_ib_dev *dev)
1699 {
1700 int err;
1701
1702 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
1703 if (err)
1704 return err;
1705
1706 dev->mdev->rev_id = dev->mdev->pdev->revision;
1707
1708 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
1709 }
1710
1711 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
1712 char *buf)
1713 {
1714 struct mlx5_ib_dev *dev =
1715 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
1716
1717 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
1718 }
1719
1720 static ssize_t show_reg_pages(struct device *device,
1721 struct device_attribute *attr, char *buf)
1722 {
1723 struct mlx5_ib_dev *dev =
1724 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
1725
1726 return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
1727 }
1728
1729 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1730 char *buf)
1731 {
1732 struct mlx5_ib_dev *dev =
1733 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
1734 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
1735 }
1736
1737 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1738 char *buf)
1739 {
1740 struct mlx5_ib_dev *dev =
1741 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
1742 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(dev->mdev),
1743 fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
1744 }
1745
1746 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1747 char *buf)
1748 {
1749 struct mlx5_ib_dev *dev =
1750 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
1751 return sprintf(buf, "%x\n", dev->mdev->rev_id);
1752 }
1753
1754 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1755 char *buf)
1756 {
1757 struct mlx5_ib_dev *dev =
1758 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
1759 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
1760 dev->mdev->board_id);
1761 }
1762
1763 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1764 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1765 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1766 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1767 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
1768 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
1769
1770 static struct device_attribute *mlx5_class_attributes[] = {
1771 &dev_attr_hw_rev,
1772 &dev_attr_fw_ver,
1773 &dev_attr_hca_type,
1774 &dev_attr_board_id,
1775 &dev_attr_fw_pages,
1776 &dev_attr_reg_pages,
1777 };
1778
1779 static void pkey_change_handler(struct work_struct *work)
1780 {
1781 struct mlx5_ib_port_resources *ports =
1782 container_of(work, struct mlx5_ib_port_resources,
1783 pkey_change_work);
1784
1785 mutex_lock(&ports->devr->mutex);
1786 mlx5_ib_gsi_pkey_change(ports->gsi);
1787 mutex_unlock(&ports->devr->mutex);
1788 }
1789
1790 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
1791 enum mlx5_dev_event event, unsigned long param)
1792 {
1793 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context;
1794 struct ib_event ibev;
1795
1796 u8 port = 0;
1797
1798 switch (event) {
1799 case MLX5_DEV_EVENT_SYS_ERROR:
1800 ibdev->ib_active = false;
1801 ibev.event = IB_EVENT_DEVICE_FATAL;
1802 break;
1803
1804 case MLX5_DEV_EVENT_PORT_UP:
1805 ibev.event = IB_EVENT_PORT_ACTIVE;
1806 port = (u8)param;
1807 break;
1808
1809 case MLX5_DEV_EVENT_PORT_DOWN:
1810 ibev.event = IB_EVENT_PORT_ERR;
1811 port = (u8)param;
1812 break;
1813
1814 case MLX5_DEV_EVENT_PORT_INITIALIZED:
1815 /* not used by ULPs */
1816 return;
1817
1818 case MLX5_DEV_EVENT_LID_CHANGE:
1819 ibev.event = IB_EVENT_LID_CHANGE;
1820 port = (u8)param;
1821 break;
1822
1823 case MLX5_DEV_EVENT_PKEY_CHANGE:
1824 ibev.event = IB_EVENT_PKEY_CHANGE;
1825 port = (u8)param;
1826
1827 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
1828 break;
1829
1830 case MLX5_DEV_EVENT_GUID_CHANGE:
1831 ibev.event = IB_EVENT_GID_CHANGE;
1832 port = (u8)param;
1833 break;
1834
1835 case MLX5_DEV_EVENT_CLIENT_REREG:
1836 ibev.event = IB_EVENT_CLIENT_REREGISTER;
1837 port = (u8)param;
1838 break;
1839 }
1840
1841 ibev.device = &ibdev->ib_dev;
1842 ibev.element.port_num = port;
1843
1844 if (port < 1 || port > ibdev->num_ports) {
1845 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
1846 return;
1847 }
1848
1849 if (ibdev->ib_active)
1850 ib_dispatch_event(&ibev);
1851 }
1852
1853 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
1854 {
1855 int port;
1856
1857 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++)
1858 mlx5_query_ext_port_caps(dev, port);
1859 }
1860
1861 static int get_port_caps(struct mlx5_ib_dev *dev)
1862 {
1863 struct ib_device_attr *dprops = NULL;
1864 struct ib_port_attr *pprops = NULL;
1865 int err = -ENOMEM;
1866 int port;
1867 struct ib_udata uhw = {.inlen = 0, .outlen = 0};
1868
1869 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
1870 if (!pprops)
1871 goto out;
1872
1873 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
1874 if (!dprops)
1875 goto out;
1876
1877 err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
1878 if (err) {
1879 mlx5_ib_warn(dev, "query_device failed %d\n", err);
1880 goto out;
1881 }
1882
1883 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
1884 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
1885 if (err) {
1886 mlx5_ib_warn(dev, "query_port %d failed %d\n",
1887 port, err);
1888 break;
1889 }
1890 dev->mdev->port_caps[port - 1].pkey_table_len =
1891 dprops->max_pkeys;
1892 dev->mdev->port_caps[port - 1].gid_table_len =
1893 pprops->gid_tbl_len;
1894 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
1895 dprops->max_pkeys, pprops->gid_tbl_len);
1896 }
1897
1898 out:
1899 kfree(pprops);
1900 kfree(dprops);
1901
1902 return err;
1903 }
1904
1905 static void destroy_umrc_res(struct mlx5_ib_dev *dev)
1906 {
1907 int err;
1908
1909 err = mlx5_mr_cache_cleanup(dev);
1910 if (err)
1911 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
1912
1913 mlx5_ib_destroy_qp(dev->umrc.qp);
1914 ib_free_cq(dev->umrc.cq);
1915 ib_dealloc_pd(dev->umrc.pd);
1916 }
1917
1918 enum {
1919 MAX_UMR_WR = 128,
1920 };
1921
1922 static int create_umr_res(struct mlx5_ib_dev *dev)
1923 {
1924 struct ib_qp_init_attr *init_attr = NULL;
1925 struct ib_qp_attr *attr = NULL;
1926 struct ib_pd *pd;
1927 struct ib_cq *cq;
1928 struct ib_qp *qp;
1929 int ret;
1930
1931 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1932 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1933 if (!attr || !init_attr) {
1934 ret = -ENOMEM;
1935 goto error_0;
1936 }
1937
1938 pd = ib_alloc_pd(&dev->ib_dev);
1939 if (IS_ERR(pd)) {
1940 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
1941 ret = PTR_ERR(pd);
1942 goto error_0;
1943 }
1944
1945 cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ);
1946 if (IS_ERR(cq)) {
1947 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
1948 ret = PTR_ERR(cq);
1949 goto error_2;
1950 }
1951
1952 init_attr->send_cq = cq;
1953 init_attr->recv_cq = cq;
1954 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
1955 init_attr->cap.max_send_wr = MAX_UMR_WR;
1956 init_attr->cap.max_send_sge = 1;
1957 init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
1958 init_attr->port_num = 1;
1959 qp = mlx5_ib_create_qp(pd, init_attr, NULL);
1960 if (IS_ERR(qp)) {
1961 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
1962 ret = PTR_ERR(qp);
1963 goto error_3;
1964 }
1965 qp->device = &dev->ib_dev;
1966 qp->real_qp = qp;
1967 qp->uobject = NULL;
1968 qp->qp_type = MLX5_IB_QPT_REG_UMR;
1969
1970 attr->qp_state = IB_QPS_INIT;
1971 attr->port_num = 1;
1972 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
1973 IB_QP_PORT, NULL);
1974 if (ret) {
1975 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
1976 goto error_4;
1977 }
1978
1979 memset(attr, 0, sizeof(*attr));
1980 attr->qp_state = IB_QPS_RTR;
1981 attr->path_mtu = IB_MTU_256;
1982
1983 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1984 if (ret) {
1985 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
1986 goto error_4;
1987 }
1988
1989 memset(attr, 0, sizeof(*attr));
1990 attr->qp_state = IB_QPS_RTS;
1991 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1992 if (ret) {
1993 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
1994 goto error_4;
1995 }
1996
1997 dev->umrc.qp = qp;
1998 dev->umrc.cq = cq;
1999 dev->umrc.pd = pd;
2000
2001 sema_init(&dev->umrc.sem, MAX_UMR_WR);
2002 ret = mlx5_mr_cache_init(dev);
2003 if (ret) {
2004 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
2005 goto error_4;
2006 }
2007
2008 kfree(attr);
2009 kfree(init_attr);
2010
2011 return 0;
2012
2013 error_4:
2014 mlx5_ib_destroy_qp(qp);
2015
2016 error_3:
2017 ib_free_cq(cq);
2018
2019 error_2:
2020 ib_dealloc_pd(pd);
2021
2022 error_0:
2023 kfree(attr);
2024 kfree(init_attr);
2025 return ret;
2026 }
2027
2028 static int create_dev_resources(struct mlx5_ib_resources *devr)
2029 {
2030 struct ib_srq_init_attr attr;
2031 struct mlx5_ib_dev *dev;
2032 struct ib_cq_init_attr cq_attr = {.cqe = 1};
2033 int port;
2034 int ret = 0;
2035
2036 dev = container_of(devr, struct mlx5_ib_dev, devr);
2037
2038 mutex_init(&devr->mutex);
2039
2040 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
2041 if (IS_ERR(devr->p0)) {
2042 ret = PTR_ERR(devr->p0);
2043 goto error0;
2044 }
2045 devr->p0->device = &dev->ib_dev;
2046 devr->p0->uobject = NULL;
2047 atomic_set(&devr->p0->usecnt, 0);
2048
2049 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL);
2050 if (IS_ERR(devr->c0)) {
2051 ret = PTR_ERR(devr->c0);
2052 goto error1;
2053 }
2054 devr->c0->device = &dev->ib_dev;
2055 devr->c0->uobject = NULL;
2056 devr->c0->comp_handler = NULL;
2057 devr->c0->event_handler = NULL;
2058 devr->c0->cq_context = NULL;
2059 atomic_set(&devr->c0->usecnt, 0);
2060
2061 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
2062 if (IS_ERR(devr->x0)) {
2063 ret = PTR_ERR(devr->x0);
2064 goto error2;
2065 }
2066 devr->x0->device = &dev->ib_dev;
2067 devr->x0->inode = NULL;
2068 atomic_set(&devr->x0->usecnt, 0);
2069 mutex_init(&devr->x0->tgt_qp_mutex);
2070 INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
2071
2072 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
2073 if (IS_ERR(devr->x1)) {
2074 ret = PTR_ERR(devr->x1);
2075 goto error3;
2076 }
2077 devr->x1->device = &dev->ib_dev;
2078 devr->x1->inode = NULL;
2079 atomic_set(&devr->x1->usecnt, 0);
2080 mutex_init(&devr->x1->tgt_qp_mutex);
2081 INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
2082
2083 memset(&attr, 0, sizeof(attr));
2084 attr.attr.max_sge = 1;
2085 attr.attr.max_wr = 1;
2086 attr.srq_type = IB_SRQT_XRC;
2087 attr.ext.xrc.cq = devr->c0;
2088 attr.ext.xrc.xrcd = devr->x0;
2089
2090 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
2091 if (IS_ERR(devr->s0)) {
2092 ret = PTR_ERR(devr->s0);
2093 goto error4;
2094 }
2095 devr->s0->device = &dev->ib_dev;
2096 devr->s0->pd = devr->p0;
2097 devr->s0->uobject = NULL;
2098 devr->s0->event_handler = NULL;
2099 devr->s0->srq_context = NULL;
2100 devr->s0->srq_type = IB_SRQT_XRC;
2101 devr->s0->ext.xrc.xrcd = devr->x0;
2102 devr->s0->ext.xrc.cq = devr->c0;
2103 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
2104 atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
2105 atomic_inc(&devr->p0->usecnt);
2106 atomic_set(&devr->s0->usecnt, 0);
2107
2108 memset(&attr, 0, sizeof(attr));
2109 attr.attr.max_sge = 1;
2110 attr.attr.max_wr = 1;
2111 attr.srq_type = IB_SRQT_BASIC;
2112 devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
2113 if (IS_ERR(devr->s1)) {
2114 ret = PTR_ERR(devr->s1);
2115 goto error5;
2116 }
2117 devr->s1->device = &dev->ib_dev;
2118 devr->s1->pd = devr->p0;
2119 devr->s1->uobject = NULL;
2120 devr->s1->event_handler = NULL;
2121 devr->s1->srq_context = NULL;
2122 devr->s1->srq_type = IB_SRQT_BASIC;
2123 devr->s1->ext.xrc.cq = devr->c0;
2124 atomic_inc(&devr->p0->usecnt);
2125 atomic_set(&devr->s0->usecnt, 0);
2126
2127 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) {
2128 INIT_WORK(&devr->ports[port].pkey_change_work,
2129 pkey_change_handler);
2130 devr->ports[port].devr = devr;
2131 }
2132
2133 return 0;
2134
2135 error5:
2136 mlx5_ib_destroy_srq(devr->s0);
2137 error4:
2138 mlx5_ib_dealloc_xrcd(devr->x1);
2139 error3:
2140 mlx5_ib_dealloc_xrcd(devr->x0);
2141 error2:
2142 mlx5_ib_destroy_cq(devr->c0);
2143 error1:
2144 mlx5_ib_dealloc_pd(devr->p0);
2145 error0:
2146 return ret;
2147 }
2148
2149 static void destroy_dev_resources(struct mlx5_ib_resources *devr)
2150 {
2151 struct mlx5_ib_dev *dev =
2152 container_of(devr, struct mlx5_ib_dev, devr);
2153 int port;
2154
2155 mlx5_ib_destroy_srq(devr->s1);
2156 mlx5_ib_destroy_srq(devr->s0);
2157 mlx5_ib_dealloc_xrcd(devr->x0);
2158 mlx5_ib_dealloc_xrcd(devr->x1);
2159 mlx5_ib_destroy_cq(devr->c0);
2160 mlx5_ib_dealloc_pd(devr->p0);
2161
2162 /* Make sure no change P_Key work items are still executing */
2163 for (port = 0; port < dev->num_ports; ++port)
2164 cancel_work_sync(&devr->ports[port].pkey_change_work);
2165 }
2166
2167 static u32 get_core_cap_flags(struct ib_device *ibdev)
2168 {
2169 struct mlx5_ib_dev *dev = to_mdev(ibdev);
2170 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
2171 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
2172 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
2173 u32 ret = 0;
2174
2175 if (ll == IB_LINK_LAYER_INFINIBAND)
2176 return RDMA_CORE_PORT_IBA_IB;
2177
2178 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
2179 return 0;
2180
2181 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP))
2182 return 0;
2183
2184 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP)
2185 ret |= RDMA_CORE_PORT_IBA_ROCE;
2186
2187 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP)
2188 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2189
2190 return ret;
2191 }
2192
2193 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
2194 struct ib_port_immutable *immutable)
2195 {
2196 struct ib_port_attr attr;
2197 int err;
2198
2199 err = mlx5_ib_query_port(ibdev, port_num, &attr);
2200 if (err)
2201 return err;
2202
2203 immutable->pkey_tbl_len = attr.pkey_tbl_len;
2204 immutable->gid_tbl_len = attr.gid_tbl_len;
2205 immutable->core_cap_flags = get_core_cap_flags(ibdev);
2206 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2207
2208 return 0;
2209 }
2210
2211 static int mlx5_enable_roce(struct mlx5_ib_dev *dev)
2212 {
2213 int err;
2214
2215 dev->roce.nb.notifier_call = mlx5_netdev_event;
2216 err = register_netdevice_notifier(&dev->roce.nb);
2217 if (err)
2218 return err;
2219
2220 err = mlx5_nic_vport_enable_roce(dev->mdev);
2221 if (err)
2222 goto err_unregister_netdevice_notifier;
2223
2224 return 0;
2225
2226 err_unregister_netdevice_notifier:
2227 unregister_netdevice_notifier(&dev->roce.nb);
2228 return err;
2229 }
2230
2231 static void mlx5_disable_roce(struct mlx5_ib_dev *dev)
2232 {
2233 mlx5_nic_vport_disable_roce(dev->mdev);
2234 unregister_netdevice_notifier(&dev->roce.nb);
2235 }
2236
2237 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
2238 {
2239 struct mlx5_ib_dev *dev;
2240 enum rdma_link_layer ll;
2241 int port_type_cap;
2242 int err;
2243 int i;
2244
2245 port_type_cap = MLX5_CAP_GEN(mdev, port_type);
2246 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
2247
2248 if ((ll == IB_LINK_LAYER_ETHERNET) && !MLX5_CAP_GEN(mdev, roce))
2249 return NULL;
2250
2251 printk_once(KERN_INFO "%s", mlx5_version);
2252
2253 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
2254 if (!dev)
2255 return NULL;
2256
2257 dev->mdev = mdev;
2258
2259 rwlock_init(&dev->roce.netdev_lock);
2260 err = get_port_caps(dev);
2261 if (err)
2262 goto err_dealloc;
2263
2264 if (mlx5_use_mad_ifc(dev))
2265 get_ext_port_caps(dev);
2266
2267 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
2268
2269 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
2270 dev->ib_dev.owner = THIS_MODULE;
2271 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
2272 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */;
2273 dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
2274 dev->ib_dev.phys_port_cnt = dev->num_ports;
2275 dev->ib_dev.num_comp_vectors =
2276 dev->mdev->priv.eq_table.num_comp_vectors;
2277 dev->ib_dev.dma_device = &mdev->pdev->dev;
2278
2279 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
2280 dev->ib_dev.uverbs_cmd_mask =
2281 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2282 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2283 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2284 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2285 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2286 (1ull << IB_USER_VERBS_CMD_REG_MR) |
2287 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
2288 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2289 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2290 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2291 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
2292 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2293 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2294 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2295 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2296 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2297 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
2298 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
2299 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
2300 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
2301 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
2302 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
2303 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
2304 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2305 dev->ib_dev.uverbs_ex_cmd_mask =
2306 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2307 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2308 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2309
2310 dev->ib_dev.query_device = mlx5_ib_query_device;
2311 dev->ib_dev.query_port = mlx5_ib_query_port;
2312 dev->ib_dev.get_link_layer = mlx5_ib_port_link_layer;
2313 if (ll == IB_LINK_LAYER_ETHERNET)
2314 dev->ib_dev.get_netdev = mlx5_ib_get_netdev;
2315 dev->ib_dev.query_gid = mlx5_ib_query_gid;
2316 dev->ib_dev.add_gid = mlx5_ib_add_gid;
2317 dev->ib_dev.del_gid = mlx5_ib_del_gid;
2318 dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
2319 dev->ib_dev.modify_device = mlx5_ib_modify_device;
2320 dev->ib_dev.modify_port = mlx5_ib_modify_port;
2321 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
2322 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
2323 dev->ib_dev.mmap = mlx5_ib_mmap;
2324 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
2325 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
2326 dev->ib_dev.create_ah = mlx5_ib_create_ah;
2327 dev->ib_dev.query_ah = mlx5_ib_query_ah;
2328 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
2329 dev->ib_dev.create_srq = mlx5_ib_create_srq;
2330 dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
2331 dev->ib_dev.query_srq = mlx5_ib_query_srq;
2332 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
2333 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
2334 dev->ib_dev.create_qp = mlx5_ib_create_qp;
2335 dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
2336 dev->ib_dev.query_qp = mlx5_ib_query_qp;
2337 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
2338 dev->ib_dev.post_send = mlx5_ib_post_send;
2339 dev->ib_dev.post_recv = mlx5_ib_post_recv;
2340 dev->ib_dev.create_cq = mlx5_ib_create_cq;
2341 dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
2342 dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
2343 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
2344 dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
2345 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
2346 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
2347 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
2348 dev->ib_dev.rereg_user_mr = mlx5_ib_rereg_user_mr;
2349 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
2350 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
2351 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
2352 dev->ib_dev.process_mad = mlx5_ib_process_mad;
2353 dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
2354 dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
2355 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
2356 dev->ib_dev.get_port_immutable = mlx5_port_immutable;
2357 if (mlx5_core_is_pf(mdev)) {
2358 dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config;
2359 dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state;
2360 dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats;
2361 dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid;
2362 }
2363
2364 mlx5_ib_internal_fill_odp_caps(dev);
2365
2366 if (MLX5_CAP_GEN(mdev, imaicl)) {
2367 dev->ib_dev.alloc_mw = mlx5_ib_alloc_mw;
2368 dev->ib_dev.dealloc_mw = mlx5_ib_dealloc_mw;
2369 dev->ib_dev.uverbs_cmd_mask |=
2370 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2371 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2372 }
2373
2374 if (MLX5_CAP_GEN(mdev, xrc)) {
2375 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
2376 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
2377 dev->ib_dev.uverbs_cmd_mask |=
2378 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2379 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2380 }
2381
2382 if (mlx5_ib_port_link_layer(&dev->ib_dev, 1) ==
2383 IB_LINK_LAYER_ETHERNET) {
2384 dev->ib_dev.create_flow = mlx5_ib_create_flow;
2385 dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
2386 dev->ib_dev.uverbs_ex_cmd_mask |=
2387 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2388 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2389 }
2390 err = init_node_data(dev);
2391 if (err)
2392 goto err_dealloc;
2393
2394 mutex_init(&dev->flow_db.lock);
2395 mutex_init(&dev->cap_mask_mutex);
2396
2397 if (ll == IB_LINK_LAYER_ETHERNET) {
2398 err = mlx5_enable_roce(dev);
2399 if (err)
2400 goto err_dealloc;
2401 }
2402
2403 err = create_dev_resources(&dev->devr);
2404 if (err)
2405 goto err_disable_roce;
2406
2407 err = mlx5_ib_odp_init_one(dev);
2408 if (err)
2409 goto err_rsrc;
2410
2411 err = ib_register_device(&dev->ib_dev, NULL);
2412 if (err)
2413 goto err_odp;
2414
2415 err = create_umr_res(dev);
2416 if (err)
2417 goto err_dev;
2418
2419 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
2420 err = device_create_file(&dev->ib_dev.dev,
2421 mlx5_class_attributes[i]);
2422 if (err)
2423 goto err_umrc;
2424 }
2425
2426 dev->ib_active = true;
2427
2428 return dev;
2429
2430 err_umrc:
2431 destroy_umrc_res(dev);
2432
2433 err_dev:
2434 ib_unregister_device(&dev->ib_dev);
2435
2436 err_odp:
2437 mlx5_ib_odp_remove_one(dev);
2438
2439 err_rsrc:
2440 destroy_dev_resources(&dev->devr);
2441
2442 err_disable_roce:
2443 if (ll == IB_LINK_LAYER_ETHERNET)
2444 mlx5_disable_roce(dev);
2445
2446 err_dealloc:
2447 ib_dealloc_device((struct ib_device *)dev);
2448
2449 return NULL;
2450 }
2451
2452 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
2453 {
2454 struct mlx5_ib_dev *dev = context;
2455 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1);
2456
2457 ib_unregister_device(&dev->ib_dev);
2458 destroy_umrc_res(dev);
2459 mlx5_ib_odp_remove_one(dev);
2460 destroy_dev_resources(&dev->devr);
2461 if (ll == IB_LINK_LAYER_ETHERNET)
2462 mlx5_disable_roce(dev);
2463 ib_dealloc_device(&dev->ib_dev);
2464 }
2465
2466 static struct mlx5_interface mlx5_ib_interface = {
2467 .add = mlx5_ib_add,
2468 .remove = mlx5_ib_remove,
2469 .event = mlx5_ib_event,
2470 .protocol = MLX5_INTERFACE_PROTOCOL_IB,
2471 };
2472
2473 static int __init mlx5_ib_init(void)
2474 {
2475 int err;
2476
2477 if (deprecated_prof_sel != 2)
2478 pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n");
2479
2480 err = mlx5_ib_odp_init();
2481 if (err)
2482 return err;
2483
2484 err = mlx5_register_interface(&mlx5_ib_interface);
2485 if (err)
2486 goto clean_odp;
2487
2488 return err;
2489
2490 clean_odp:
2491 mlx5_ib_odp_cleanup();
2492 return err;
2493 }
2494
2495 static void __exit mlx5_ib_cleanup(void)
2496 {
2497 mlx5_unregister_interface(&mlx5_ib_interface);
2498 mlx5_ib_odp_cleanup();
2499 }
2500
2501 module_init(mlx5_ib_init);
2502 module_exit(mlx5_ib_cleanup);
Linux kernel - Deliverables
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