1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* 3 * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved. 4 * Copyright (c) 2020, Intel Corporation. All rights reserved. 5 */ 6 7 #include <linux/debugfs.h> 8 #include <linux/highmem.h> 9 #include <linux/module.h> 10 #include <linux/init.h> 11 #include <linux/errno.h> 12 #include <linux/pci.h> 13 #include <linux/dma-mapping.h> 14 #include <linux/slab.h> 15 #include <linux/bitmap.h> 16 #include <linux/sched.h> 17 #include <linux/sched/mm.h> 18 #include <linux/sched/task.h> 19 #include <linux/delay.h> 20 #include <rdma/ib_user_verbs.h> 21 #include <rdma/ib_addr.h> 22 #include <rdma/ib_cache.h> 23 #include <linux/mlx5/port.h> 24 #include <linux/mlx5/vport.h> 25 #include <linux/mlx5/fs.h> 26 #include <linux/mlx5/eswitch.h> 27 #include <linux/mlx5/driver.h> 28 #include <linux/list.h> 29 #include <rdma/ib_smi.h> 30 #include <rdma/ib_umem_odp.h> 31 #include <rdma/lag.h> 32 #include <linux/in.h> 33 #include <linux/etherdevice.h> 34 #include "mlx5_ib.h" 35 #include "ib_rep.h" 36 #include "cmd.h" 37 #include "devx.h" 38 #include "dm.h" 39 #include "fs.h" 40 #include "srq.h" 41 #include "qp.h" 42 #include "wr.h" 43 #include "restrack.h" 44 #include "counters.h" 45 #include "umr.h" 46 #include <rdma/uverbs_std_types.h> 47 #include <rdma/uverbs_ioctl.h> 48 #include <rdma/mlx5_user_ioctl_verbs.h> 49 #include <rdma/mlx5_user_ioctl_cmds.h> 50 #include "macsec.h" 51 52 #define UVERBS_MODULE_NAME mlx5_ib 53 #include <rdma/uverbs_named_ioctl.h> 54 55 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>"); 56 MODULE_DESCRIPTION("Mellanox 5th generation network adapters (ConnectX series) IB driver"); 57 MODULE_LICENSE("Dual BSD/GPL"); 58 59 struct mlx5_ib_event_work { 60 struct work_struct work; 61 union { 62 struct mlx5_ib_dev *dev; 63 struct mlx5_ib_multiport_info *mpi; 64 }; 65 bool is_slave; 66 unsigned int event; 67 void *param; 68 }; 69 70 enum { 71 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3, 72 }; 73 74 static struct workqueue_struct *mlx5_ib_event_wq; 75 static LIST_HEAD(mlx5_ib_unaffiliated_port_list); 76 static LIST_HEAD(mlx5_ib_dev_list); 77 /* 78 * This mutex should be held when accessing either of the above lists 79 */ 80 static DEFINE_MUTEX(mlx5_ib_multiport_mutex); 81 82 struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi) 83 { 84 struct mlx5_ib_dev *dev; 85 86 mutex_lock(&mlx5_ib_multiport_mutex); 87 dev = mpi->ibdev; 88 mutex_unlock(&mlx5_ib_multiport_mutex); 89 return dev; 90 } 91 92 static enum rdma_link_layer 93 mlx5_port_type_cap_to_rdma_ll(int port_type_cap) 94 { 95 switch (port_type_cap) { 96 case MLX5_CAP_PORT_TYPE_IB: 97 return IB_LINK_LAYER_INFINIBAND; 98 case MLX5_CAP_PORT_TYPE_ETH: 99 return IB_LINK_LAYER_ETHERNET; 100 default: 101 return IB_LINK_LAYER_UNSPECIFIED; 102 } 103 } 104 105 static enum rdma_link_layer 106 mlx5_ib_port_link_layer(struct ib_device *device, u32 port_num) 107 { 108 struct mlx5_ib_dev *dev = to_mdev(device); 109 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type); 110 111 return mlx5_port_type_cap_to_rdma_ll(port_type_cap); 112 } 113 114 static int get_port_state(struct ib_device *ibdev, 115 u32 port_num, 116 enum ib_port_state *state) 117 { 118 struct ib_port_attr attr; 119 int ret; 120 121 memset(&attr, 0, sizeof(attr)); 122 ret = ibdev->ops.query_port(ibdev, port_num, &attr); 123 if (!ret) 124 *state = attr.state; 125 return ret; 126 } 127 128 static struct mlx5_roce *mlx5_get_rep_roce(struct mlx5_ib_dev *dev, 129 struct net_device *ndev, 130 struct net_device *upper, 131 u32 *port_num) 132 { 133 struct net_device *rep_ndev; 134 struct mlx5_ib_port *port; 135 int i; 136 137 for (i = 0; i < dev->num_ports; i++) { 138 port = &dev->port[i]; 139 if (!port->rep) 140 continue; 141 142 if (upper == ndev && port->rep->vport == MLX5_VPORT_UPLINK) { 143 *port_num = i + 1; 144 return &port->roce; 145 } 146 147 if (upper && port->rep->vport == MLX5_VPORT_UPLINK) 148 continue; 149 150 read_lock(&port->roce.netdev_lock); 151 rep_ndev = mlx5_ib_get_rep_netdev(port->rep->esw, 152 port->rep->vport); 153 if (rep_ndev == ndev) { 154 read_unlock(&port->roce.netdev_lock); 155 *port_num = i + 1; 156 return &port->roce; 157 } 158 read_unlock(&port->roce.netdev_lock); 159 } 160 161 return NULL; 162 } 163 164 static int mlx5_netdev_event(struct notifier_block *this, 165 unsigned long event, void *ptr) 166 { 167 struct mlx5_roce *roce = container_of(this, struct mlx5_roce, nb); 168 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 169 u32 port_num = roce->native_port_num; 170 struct mlx5_core_dev *mdev; 171 struct mlx5_ib_dev *ibdev; 172 173 ibdev = roce->dev; 174 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL); 175 if (!mdev) 176 return NOTIFY_DONE; 177 178 switch (event) { 179 case NETDEV_REGISTER: 180 /* Should already be registered during the load */ 181 if (ibdev->is_rep) 182 break; 183 write_lock(&roce->netdev_lock); 184 if (ndev->dev.parent == mdev->device) 185 roce->netdev = ndev; 186 write_unlock(&roce->netdev_lock); 187 break; 188 189 case NETDEV_UNREGISTER: 190 /* In case of reps, ib device goes away before the netdevs */ 191 write_lock(&roce->netdev_lock); 192 if (roce->netdev == ndev) 193 roce->netdev = NULL; 194 write_unlock(&roce->netdev_lock); 195 break; 196 197 case NETDEV_CHANGE: 198 case NETDEV_UP: 199 case NETDEV_DOWN: { 200 struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(mdev); 201 struct net_device *upper = NULL; 202 203 if (lag_ndev) { 204 upper = netdev_master_upper_dev_get(lag_ndev); 205 dev_put(lag_ndev); 206 } 207 208 if (ibdev->is_rep) 209 roce = mlx5_get_rep_roce(ibdev, ndev, upper, &port_num); 210 if (!roce) 211 return NOTIFY_DONE; 212 if ((upper == ndev || 213 ((!upper || ibdev->is_rep) && ndev == roce->netdev)) && 214 ibdev->ib_active) { 215 struct ib_event ibev = { }; 216 enum ib_port_state port_state; 217 218 if (get_port_state(&ibdev->ib_dev, port_num, 219 &port_state)) 220 goto done; 221 222 if (roce->last_port_state == port_state) 223 goto done; 224 225 roce->last_port_state = port_state; 226 ibev.device = &ibdev->ib_dev; 227 if (port_state == IB_PORT_DOWN) 228 ibev.event = IB_EVENT_PORT_ERR; 229 else if (port_state == IB_PORT_ACTIVE) 230 ibev.event = IB_EVENT_PORT_ACTIVE; 231 else 232 goto done; 233 234 ibev.element.port_num = port_num; 235 ib_dispatch_event(&ibev); 236 } 237 break; 238 } 239 240 default: 241 break; 242 } 243 done: 244 mlx5_ib_put_native_port_mdev(ibdev, port_num); 245 return NOTIFY_DONE; 246 } 247 248 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device, 249 u32 port_num) 250 { 251 struct mlx5_ib_dev *ibdev = to_mdev(device); 252 struct net_device *ndev; 253 struct mlx5_core_dev *mdev; 254 255 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL); 256 if (!mdev) 257 return NULL; 258 259 ndev = mlx5_lag_get_roce_netdev(mdev); 260 if (ndev) 261 goto out; 262 263 /* Ensure ndev does not disappear before we invoke dev_hold() 264 */ 265 read_lock(&ibdev->port[port_num - 1].roce.netdev_lock); 266 ndev = ibdev->port[port_num - 1].roce.netdev; 267 if (ndev) 268 dev_hold(ndev); 269 read_unlock(&ibdev->port[port_num - 1].roce.netdev_lock); 270 271 out: 272 mlx5_ib_put_native_port_mdev(ibdev, port_num); 273 return ndev; 274 } 275 276 struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *ibdev, 277 u32 ib_port_num, 278 u32 *native_port_num) 279 { 280 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev, 281 ib_port_num); 282 struct mlx5_core_dev *mdev = NULL; 283 struct mlx5_ib_multiport_info *mpi; 284 struct mlx5_ib_port *port; 285 286 if (!mlx5_core_mp_enabled(ibdev->mdev) || 287 ll != IB_LINK_LAYER_ETHERNET) { 288 if (native_port_num) 289 *native_port_num = ib_port_num; 290 return ibdev->mdev; 291 } 292 293 if (native_port_num) 294 *native_port_num = 1; 295 296 port = &ibdev->port[ib_port_num - 1]; 297 spin_lock(&port->mp.mpi_lock); 298 mpi = ibdev->port[ib_port_num - 1].mp.mpi; 299 if (mpi && !mpi->unaffiliate) { 300 mdev = mpi->mdev; 301 /* If it's the master no need to refcount, it'll exist 302 * as long as the ib_dev exists. 303 */ 304 if (!mpi->is_master) 305 mpi->mdev_refcnt++; 306 } 307 spin_unlock(&port->mp.mpi_lock); 308 309 return mdev; 310 } 311 312 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *ibdev, u32 port_num) 313 { 314 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev, 315 port_num); 316 struct mlx5_ib_multiport_info *mpi; 317 struct mlx5_ib_port *port; 318 319 if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 320 return; 321 322 port = &ibdev->port[port_num - 1]; 323 324 spin_lock(&port->mp.mpi_lock); 325 mpi = ibdev->port[port_num - 1].mp.mpi; 326 if (mpi->is_master) 327 goto out; 328 329 mpi->mdev_refcnt--; 330 if (mpi->unaffiliate) 331 complete(&mpi->unref_comp); 332 out: 333 spin_unlock(&port->mp.mpi_lock); 334 } 335 336 static int translate_eth_legacy_proto_oper(u32 eth_proto_oper, 337 u16 *active_speed, u8 *active_width) 338 { 339 switch (eth_proto_oper) { 340 case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII): 341 case MLX5E_PROT_MASK(MLX5E_1000BASE_KX): 342 case MLX5E_PROT_MASK(MLX5E_100BASE_TX): 343 case MLX5E_PROT_MASK(MLX5E_1000BASE_T): 344 *active_width = IB_WIDTH_1X; 345 *active_speed = IB_SPEED_SDR; 346 break; 347 case MLX5E_PROT_MASK(MLX5E_10GBASE_T): 348 case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4): 349 case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4): 350 case MLX5E_PROT_MASK(MLX5E_10GBASE_KR): 351 case MLX5E_PROT_MASK(MLX5E_10GBASE_CR): 352 case MLX5E_PROT_MASK(MLX5E_10GBASE_SR): 353 case MLX5E_PROT_MASK(MLX5E_10GBASE_ER): 354 *active_width = IB_WIDTH_1X; 355 *active_speed = IB_SPEED_QDR; 356 break; 357 case MLX5E_PROT_MASK(MLX5E_25GBASE_CR): 358 case MLX5E_PROT_MASK(MLX5E_25GBASE_KR): 359 case MLX5E_PROT_MASK(MLX5E_25GBASE_SR): 360 *active_width = IB_WIDTH_1X; 361 *active_speed = IB_SPEED_EDR; 362 break; 363 case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4): 364 case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4): 365 case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4): 366 case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4): 367 *active_width = IB_WIDTH_4X; 368 *active_speed = IB_SPEED_QDR; 369 break; 370 case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2): 371 case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2): 372 case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2): 373 *active_width = IB_WIDTH_1X; 374 *active_speed = IB_SPEED_HDR; 375 break; 376 case MLX5E_PROT_MASK(MLX5E_56GBASE_R4): 377 *active_width = IB_WIDTH_4X; 378 *active_speed = IB_SPEED_FDR; 379 break; 380 case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4): 381 case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4): 382 case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4): 383 case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4): 384 *active_width = IB_WIDTH_4X; 385 *active_speed = IB_SPEED_EDR; 386 break; 387 default: 388 return -EINVAL; 389 } 390 391 return 0; 392 } 393 394 static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u16 *active_speed, 395 u8 *active_width) 396 { 397 switch (eth_proto_oper) { 398 case MLX5E_PROT_MASK(MLX5E_SGMII_100M): 399 case MLX5E_PROT_MASK(MLX5E_1000BASE_X_SGMII): 400 *active_width = IB_WIDTH_1X; 401 *active_speed = IB_SPEED_SDR; 402 break; 403 case MLX5E_PROT_MASK(MLX5E_5GBASE_R): 404 *active_width = IB_WIDTH_1X; 405 *active_speed = IB_SPEED_DDR; 406 break; 407 case MLX5E_PROT_MASK(MLX5E_10GBASE_XFI_XAUI_1): 408 *active_width = IB_WIDTH_1X; 409 *active_speed = IB_SPEED_QDR; 410 break; 411 case MLX5E_PROT_MASK(MLX5E_40GBASE_XLAUI_4_XLPPI_4): 412 *active_width = IB_WIDTH_4X; 413 *active_speed = IB_SPEED_QDR; 414 break; 415 case MLX5E_PROT_MASK(MLX5E_25GAUI_1_25GBASE_CR_KR): 416 *active_width = IB_WIDTH_1X; 417 *active_speed = IB_SPEED_EDR; 418 break; 419 case MLX5E_PROT_MASK(MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2): 420 *active_width = IB_WIDTH_2X; 421 *active_speed = IB_SPEED_EDR; 422 break; 423 case MLX5E_PROT_MASK(MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR): 424 *active_width = IB_WIDTH_1X; 425 *active_speed = IB_SPEED_HDR; 426 break; 427 case MLX5E_PROT_MASK(MLX5E_CAUI_4_100GBASE_CR4_KR4): 428 *active_width = IB_WIDTH_4X; 429 *active_speed = IB_SPEED_EDR; 430 break; 431 case MLX5E_PROT_MASK(MLX5E_100GAUI_2_100GBASE_CR2_KR2): 432 *active_width = IB_WIDTH_2X; 433 *active_speed = IB_SPEED_HDR; 434 break; 435 case MLX5E_PROT_MASK(MLX5E_100GAUI_1_100GBASE_CR_KR): 436 *active_width = IB_WIDTH_1X; 437 *active_speed = IB_SPEED_NDR; 438 break; 439 case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4): 440 *active_width = IB_WIDTH_4X; 441 *active_speed = IB_SPEED_HDR; 442 break; 443 case MLX5E_PROT_MASK(MLX5E_200GAUI_2_200GBASE_CR2_KR2): 444 *active_width = IB_WIDTH_2X; 445 *active_speed = IB_SPEED_NDR; 446 break; 447 case MLX5E_PROT_MASK(MLX5E_400GAUI_8_400GBASE_CR8): 448 *active_width = IB_WIDTH_8X; 449 *active_speed = IB_SPEED_HDR; 450 break; 451 case MLX5E_PROT_MASK(MLX5E_400GAUI_4_400GBASE_CR4_KR4): 452 *active_width = IB_WIDTH_4X; 453 *active_speed = IB_SPEED_NDR; 454 break; 455 case MLX5E_PROT_MASK(MLX5E_800GAUI_8_800GBASE_CR8_KR8): 456 *active_width = IB_WIDTH_8X; 457 *active_speed = IB_SPEED_NDR; 458 break; 459 default: 460 return -EINVAL; 461 } 462 463 return 0; 464 } 465 466 static int translate_eth_proto_oper(u32 eth_proto_oper, u16 *active_speed, 467 u8 *active_width, bool ext) 468 { 469 return ext ? 470 translate_eth_ext_proto_oper(eth_proto_oper, active_speed, 471 active_width) : 472 translate_eth_legacy_proto_oper(eth_proto_oper, active_speed, 473 active_width); 474 } 475 476 static int mlx5_query_port_roce(struct ib_device *device, u32 port_num, 477 struct ib_port_attr *props) 478 { 479 struct mlx5_ib_dev *dev = to_mdev(device); 480 u32 out[MLX5_ST_SZ_DW(ptys_reg)] = {0}; 481 struct mlx5_core_dev *mdev; 482 struct net_device *ndev, *upper; 483 enum ib_mtu ndev_ib_mtu; 484 bool put_mdev = true; 485 u32 eth_prot_oper; 486 u32 mdev_port_num; 487 bool ext; 488 int err; 489 490 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 491 if (!mdev) { 492 /* This means the port isn't affiliated yet. Get the 493 * info for the master port instead. 494 */ 495 put_mdev = false; 496 mdev = dev->mdev; 497 mdev_port_num = 1; 498 port_num = 1; 499 } 500 501 /* Possible bad flows are checked before filling out props so in case 502 * of an error it will still be zeroed out. 503 * Use native port in case of reps 504 */ 505 if (dev->is_rep) 506 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN, 507 1); 508 else 509 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN, 510 mdev_port_num); 511 if (err) 512 goto out; 513 ext = !!MLX5_GET_ETH_PROTO(ptys_reg, out, true, eth_proto_capability); 514 eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper); 515 516 props->active_width = IB_WIDTH_4X; 517 props->active_speed = IB_SPEED_QDR; 518 519 translate_eth_proto_oper(eth_prot_oper, &props->active_speed, 520 &props->active_width, ext); 521 522 if (!dev->is_rep && dev->mdev->roce.roce_en) { 523 u16 qkey_viol_cntr; 524 525 props->port_cap_flags |= IB_PORT_CM_SUP; 526 props->ip_gids = true; 527 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev, 528 roce_address_table_size); 529 mlx5_query_nic_vport_qkey_viol_cntr(mdev, &qkey_viol_cntr); 530 props->qkey_viol_cntr = qkey_viol_cntr; 531 } 532 props->max_mtu = IB_MTU_4096; 533 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg); 534 props->pkey_tbl_len = 1; 535 props->state = IB_PORT_DOWN; 536 props->phys_state = IB_PORT_PHYS_STATE_DISABLED; 537 538 /* If this is a stub query for an unaffiliated port stop here */ 539 if (!put_mdev) 540 goto out; 541 542 ndev = mlx5_ib_get_netdev(device, port_num); 543 if (!ndev) 544 goto out; 545 546 if (dev->lag_active) { 547 rcu_read_lock(); 548 upper = netdev_master_upper_dev_get_rcu(ndev); 549 if (upper) { 550 dev_put(ndev); 551 ndev = upper; 552 dev_hold(ndev); 553 } 554 rcu_read_unlock(); 555 } 556 557 if (netif_running(ndev) && netif_carrier_ok(ndev)) { 558 props->state = IB_PORT_ACTIVE; 559 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 560 } 561 562 ndev_ib_mtu = iboe_get_mtu(ndev->mtu); 563 564 dev_put(ndev); 565 566 props->active_mtu = min(props->max_mtu, ndev_ib_mtu); 567 out: 568 if (put_mdev) 569 mlx5_ib_put_native_port_mdev(dev, port_num); 570 return err; 571 } 572 573 int set_roce_addr(struct mlx5_ib_dev *dev, u32 port_num, 574 unsigned int index, const union ib_gid *gid, 575 const struct ib_gid_attr *attr) 576 { 577 enum ib_gid_type gid_type; 578 u16 vlan_id = 0xffff; 579 u8 roce_version = 0; 580 u8 roce_l3_type = 0; 581 u8 mac[ETH_ALEN]; 582 int ret; 583 584 gid_type = attr->gid_type; 585 if (gid) { 586 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]); 587 if (ret) 588 return ret; 589 } 590 591 switch (gid_type) { 592 case IB_GID_TYPE_ROCE: 593 roce_version = MLX5_ROCE_VERSION_1; 594 break; 595 case IB_GID_TYPE_ROCE_UDP_ENCAP: 596 roce_version = MLX5_ROCE_VERSION_2; 597 if (gid && ipv6_addr_v4mapped((void *)gid)) 598 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4; 599 else 600 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6; 601 break; 602 603 default: 604 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type); 605 } 606 607 return mlx5_core_roce_gid_set(dev->mdev, index, roce_version, 608 roce_l3_type, gid->raw, mac, 609 vlan_id < VLAN_CFI_MASK, vlan_id, 610 port_num); 611 } 612 613 static int mlx5_ib_add_gid(const struct ib_gid_attr *attr, 614 __always_unused void **context) 615 { 616 int ret; 617 618 ret = mlx5r_add_gid_macsec_operations(attr); 619 if (ret) 620 return ret; 621 622 return set_roce_addr(to_mdev(attr->device), attr->port_num, 623 attr->index, &attr->gid, attr); 624 } 625 626 static int mlx5_ib_del_gid(const struct ib_gid_attr *attr, 627 __always_unused void **context) 628 { 629 int ret; 630 631 ret = set_roce_addr(to_mdev(attr->device), attr->port_num, 632 attr->index, NULL, attr); 633 if (ret) 634 return ret; 635 636 mlx5r_del_gid_macsec_operations(attr); 637 return 0; 638 } 639 640 __be16 mlx5_get_roce_udp_sport_min(const struct mlx5_ib_dev *dev, 641 const struct ib_gid_attr *attr) 642 { 643 if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) 644 return 0; 645 646 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port)); 647 } 648 649 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev) 650 { 651 if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB) 652 return !MLX5_CAP_GEN(dev->mdev, ib_virt); 653 return 0; 654 } 655 656 enum { 657 MLX5_VPORT_ACCESS_METHOD_MAD, 658 MLX5_VPORT_ACCESS_METHOD_HCA, 659 MLX5_VPORT_ACCESS_METHOD_NIC, 660 }; 661 662 static int mlx5_get_vport_access_method(struct ib_device *ibdev) 663 { 664 if (mlx5_use_mad_ifc(to_mdev(ibdev))) 665 return MLX5_VPORT_ACCESS_METHOD_MAD; 666 667 if (mlx5_ib_port_link_layer(ibdev, 1) == 668 IB_LINK_LAYER_ETHERNET) 669 return MLX5_VPORT_ACCESS_METHOD_NIC; 670 671 return MLX5_VPORT_ACCESS_METHOD_HCA; 672 } 673 674 static void get_atomic_caps(struct mlx5_ib_dev *dev, 675 u8 atomic_size_qp, 676 struct ib_device_attr *props) 677 { 678 u8 tmp; 679 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations); 680 u8 atomic_req_8B_endianness_mode = 681 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode); 682 683 /* Check if HW supports 8 bytes standard atomic operations and capable 684 * of host endianness respond 685 */ 686 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD; 687 if (((atomic_operations & tmp) == tmp) && 688 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) && 689 (atomic_req_8B_endianness_mode)) { 690 props->atomic_cap = IB_ATOMIC_HCA; 691 } else { 692 props->atomic_cap = IB_ATOMIC_NONE; 693 } 694 } 695 696 static void get_atomic_caps_qp(struct mlx5_ib_dev *dev, 697 struct ib_device_attr *props) 698 { 699 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp); 700 701 get_atomic_caps(dev, atomic_size_qp, props); 702 } 703 704 static int mlx5_query_system_image_guid(struct ib_device *ibdev, 705 __be64 *sys_image_guid) 706 { 707 struct mlx5_ib_dev *dev = to_mdev(ibdev); 708 struct mlx5_core_dev *mdev = dev->mdev; 709 u64 tmp; 710 int err; 711 712 switch (mlx5_get_vport_access_method(ibdev)) { 713 case MLX5_VPORT_ACCESS_METHOD_MAD: 714 return mlx5_query_mad_ifc_system_image_guid(ibdev, 715 sys_image_guid); 716 717 case MLX5_VPORT_ACCESS_METHOD_HCA: 718 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp); 719 break; 720 721 case MLX5_VPORT_ACCESS_METHOD_NIC: 722 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp); 723 break; 724 725 default: 726 return -EINVAL; 727 } 728 729 if (!err) 730 *sys_image_guid = cpu_to_be64(tmp); 731 732 return err; 733 734 } 735 736 static int mlx5_query_max_pkeys(struct ib_device *ibdev, 737 u16 *max_pkeys) 738 { 739 struct mlx5_ib_dev *dev = to_mdev(ibdev); 740 struct mlx5_core_dev *mdev = dev->mdev; 741 742 switch (mlx5_get_vport_access_method(ibdev)) { 743 case MLX5_VPORT_ACCESS_METHOD_MAD: 744 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys); 745 746 case MLX5_VPORT_ACCESS_METHOD_HCA: 747 case MLX5_VPORT_ACCESS_METHOD_NIC: 748 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, 749 pkey_table_size)); 750 return 0; 751 752 default: 753 return -EINVAL; 754 } 755 } 756 757 static int mlx5_query_vendor_id(struct ib_device *ibdev, 758 u32 *vendor_id) 759 { 760 struct mlx5_ib_dev *dev = to_mdev(ibdev); 761 762 switch (mlx5_get_vport_access_method(ibdev)) { 763 case MLX5_VPORT_ACCESS_METHOD_MAD: 764 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id); 765 766 case MLX5_VPORT_ACCESS_METHOD_HCA: 767 case MLX5_VPORT_ACCESS_METHOD_NIC: 768 return mlx5_core_query_vendor_id(dev->mdev, vendor_id); 769 770 default: 771 return -EINVAL; 772 } 773 } 774 775 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev, 776 __be64 *node_guid) 777 { 778 u64 tmp; 779 int err; 780 781 switch (mlx5_get_vport_access_method(&dev->ib_dev)) { 782 case MLX5_VPORT_ACCESS_METHOD_MAD: 783 return mlx5_query_mad_ifc_node_guid(dev, node_guid); 784 785 case MLX5_VPORT_ACCESS_METHOD_HCA: 786 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp); 787 break; 788 789 case MLX5_VPORT_ACCESS_METHOD_NIC: 790 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp); 791 break; 792 793 default: 794 return -EINVAL; 795 } 796 797 if (!err) 798 *node_guid = cpu_to_be64(tmp); 799 800 return err; 801 } 802 803 struct mlx5_reg_node_desc { 804 u8 desc[IB_DEVICE_NODE_DESC_MAX]; 805 }; 806 807 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 808 { 809 struct mlx5_reg_node_desc in; 810 811 if (mlx5_use_mad_ifc(dev)) 812 return mlx5_query_mad_ifc_node_desc(dev, node_desc); 813 814 memset(&in, 0, sizeof(in)); 815 816 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc, 817 sizeof(struct mlx5_reg_node_desc), 818 MLX5_REG_NODE_DESC, 0, 0); 819 } 820 821 static void fill_esw_mgr_reg_c0(struct mlx5_core_dev *mdev, 822 struct mlx5_ib_query_device_resp *resp) 823 { 824 struct mlx5_eswitch *esw = mdev->priv.eswitch; 825 u16 vport = mlx5_eswitch_manager_vport(mdev); 826 827 resp->reg_c0.value = mlx5_eswitch_get_vport_metadata_for_match(esw, 828 vport); 829 resp->reg_c0.mask = mlx5_eswitch_get_vport_metadata_mask(); 830 } 831 832 static int mlx5_ib_query_device(struct ib_device *ibdev, 833 struct ib_device_attr *props, 834 struct ib_udata *uhw) 835 { 836 size_t uhw_outlen = (uhw) ? uhw->outlen : 0; 837 struct mlx5_ib_dev *dev = to_mdev(ibdev); 838 struct mlx5_core_dev *mdev = dev->mdev; 839 int err = -ENOMEM; 840 int max_sq_desc; 841 int max_rq_sg; 842 int max_sq_sg; 843 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz); 844 bool raw_support = !mlx5_core_mp_enabled(mdev); 845 struct mlx5_ib_query_device_resp resp = {}; 846 size_t resp_len; 847 u64 max_tso; 848 849 resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length); 850 if (uhw_outlen && uhw_outlen < resp_len) 851 return -EINVAL; 852 853 resp.response_length = resp_len; 854 855 if (uhw && uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen)) 856 return -EINVAL; 857 858 memset(props, 0, sizeof(*props)); 859 err = mlx5_query_system_image_guid(ibdev, 860 &props->sys_image_guid); 861 if (err) 862 return err; 863 864 props->max_pkeys = dev->pkey_table_len; 865 866 err = mlx5_query_vendor_id(ibdev, &props->vendor_id); 867 if (err) 868 return err; 869 870 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) | 871 (fw_rev_min(dev->mdev) << 16) | 872 fw_rev_sub(dev->mdev); 873 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 874 IB_DEVICE_PORT_ACTIVE_EVENT | 875 IB_DEVICE_SYS_IMAGE_GUID | 876 IB_DEVICE_RC_RNR_NAK_GEN; 877 878 if (MLX5_CAP_GEN(mdev, pkv)) 879 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 880 if (MLX5_CAP_GEN(mdev, qkv)) 881 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 882 if (MLX5_CAP_GEN(mdev, apm)) 883 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 884 if (MLX5_CAP_GEN(mdev, xrc)) 885 props->device_cap_flags |= IB_DEVICE_XRC; 886 if (MLX5_CAP_GEN(mdev, imaicl)) { 887 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW | 888 IB_DEVICE_MEM_WINDOW_TYPE_2B; 889 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 890 /* We support 'Gappy' memory registration too */ 891 props->kernel_cap_flags |= IBK_SG_GAPS_REG; 892 } 893 /* IB_WR_REG_MR always requires changing the entity size with UMR */ 894 if (!MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) 895 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 896 if (MLX5_CAP_GEN(mdev, sho)) { 897 props->kernel_cap_flags |= IBK_INTEGRITY_HANDOVER; 898 /* At this stage no support for signature handover */ 899 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 | 900 IB_PROT_T10DIF_TYPE_2 | 901 IB_PROT_T10DIF_TYPE_3; 902 props->sig_guard_cap = IB_GUARD_T10DIF_CRC | 903 IB_GUARD_T10DIF_CSUM; 904 } 905 if (MLX5_CAP_GEN(mdev, block_lb_mc)) 906 props->kernel_cap_flags |= IBK_BLOCK_MULTICAST_LOOPBACK; 907 908 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) { 909 if (MLX5_CAP_ETH(mdev, csum_cap)) { 910 /* Legacy bit to support old userspace libraries */ 911 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 912 props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM; 913 } 914 915 if (MLX5_CAP_ETH(dev->mdev, vlan_cap)) 916 props->raw_packet_caps |= 917 IB_RAW_PACKET_CAP_CVLAN_STRIPPING; 918 919 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) { 920 max_tso = MLX5_CAP_ETH(mdev, max_lso_cap); 921 if (max_tso) { 922 resp.tso_caps.max_tso = 1 << max_tso; 923 resp.tso_caps.supported_qpts |= 924 1 << IB_QPT_RAW_PACKET; 925 resp.response_length += sizeof(resp.tso_caps); 926 } 927 } 928 929 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) { 930 resp.rss_caps.rx_hash_function = 931 MLX5_RX_HASH_FUNC_TOEPLITZ; 932 resp.rss_caps.rx_hash_fields_mask = 933 MLX5_RX_HASH_SRC_IPV4 | 934 MLX5_RX_HASH_DST_IPV4 | 935 MLX5_RX_HASH_SRC_IPV6 | 936 MLX5_RX_HASH_DST_IPV6 | 937 MLX5_RX_HASH_SRC_PORT_TCP | 938 MLX5_RX_HASH_DST_PORT_TCP | 939 MLX5_RX_HASH_SRC_PORT_UDP | 940 MLX5_RX_HASH_DST_PORT_UDP | 941 MLX5_RX_HASH_INNER; 942 resp.response_length += sizeof(resp.rss_caps); 943 } 944 } else { 945 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) 946 resp.response_length += sizeof(resp.tso_caps); 947 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) 948 resp.response_length += sizeof(resp.rss_caps); 949 } 950 951 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) { 952 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 953 props->kernel_cap_flags |= IBK_UD_TSO; 954 } 955 956 if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) && 957 MLX5_CAP_GEN(dev->mdev, general_notification_event) && 958 raw_support) 959 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP; 960 961 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) && 962 MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap)) 963 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 964 965 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && 966 MLX5_CAP_ETH(dev->mdev, scatter_fcs) && 967 raw_support) { 968 /* Legacy bit to support old userspace libraries */ 969 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS; 970 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS; 971 } 972 973 if (MLX5_CAP_DEV_MEM(mdev, memic)) { 974 props->max_dm_size = 975 MLX5_CAP_DEV_MEM(mdev, max_memic_size); 976 } 977 978 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) 979 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 980 981 if (MLX5_CAP_GEN(mdev, end_pad)) 982 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING; 983 984 props->vendor_part_id = mdev->pdev->device; 985 props->hw_ver = mdev->pdev->revision; 986 987 props->max_mr_size = ~0ull; 988 props->page_size_cap = ~(min_page_size - 1); 989 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp); 990 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 991 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) / 992 sizeof(struct mlx5_wqe_data_seg); 993 max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512); 994 max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) - 995 sizeof(struct mlx5_wqe_raddr_seg)) / 996 sizeof(struct mlx5_wqe_data_seg); 997 props->max_send_sge = max_sq_sg; 998 props->max_recv_sge = max_rq_sg; 999 props->max_sge_rd = MLX5_MAX_SGE_RD; 1000 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq); 1001 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1; 1002 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 1003 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd); 1004 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp); 1005 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp); 1006 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq); 1007 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1; 1008 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay); 1009 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 1010 props->max_srq_sge = max_rq_sg - 1; 1011 props->max_fast_reg_page_list_len = 1012 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size); 1013 props->max_pi_fast_reg_page_list_len = 1014 props->max_fast_reg_page_list_len / 2; 1015 props->max_sgl_rd = 1016 MLX5_CAP_GEN(mdev, max_sgl_for_optimized_performance); 1017 get_atomic_caps_qp(dev, props); 1018 props->masked_atomic_cap = IB_ATOMIC_NONE; 1019 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg); 1020 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg); 1021 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 1022 props->max_mcast_grp; 1023 props->max_ah = INT_MAX; 1024 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz); 1025 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL; 1026 1027 if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) { 1028 if (dev->odp_caps.general_caps & IB_ODP_SUPPORT) 1029 props->kernel_cap_flags |= IBK_ON_DEMAND_PAGING; 1030 props->odp_caps = dev->odp_caps; 1031 if (!uhw) { 1032 /* ODP for kernel QPs is not implemented for receive 1033 * WQEs and SRQ WQEs 1034 */ 1035 props->odp_caps.per_transport_caps.rc_odp_caps &= 1036 ~(IB_ODP_SUPPORT_READ | 1037 IB_ODP_SUPPORT_SRQ_RECV); 1038 props->odp_caps.per_transport_caps.uc_odp_caps &= 1039 ~(IB_ODP_SUPPORT_READ | 1040 IB_ODP_SUPPORT_SRQ_RECV); 1041 props->odp_caps.per_transport_caps.ud_odp_caps &= 1042 ~(IB_ODP_SUPPORT_READ | 1043 IB_ODP_SUPPORT_SRQ_RECV); 1044 props->odp_caps.per_transport_caps.xrc_odp_caps &= 1045 ~(IB_ODP_SUPPORT_READ | 1046 IB_ODP_SUPPORT_SRQ_RECV); 1047 } 1048 } 1049 1050 if (mlx5_core_is_vf(mdev)) 1051 props->kernel_cap_flags |= IBK_VIRTUAL_FUNCTION; 1052 1053 if (mlx5_ib_port_link_layer(ibdev, 1) == 1054 IB_LINK_LAYER_ETHERNET && raw_support) { 1055 props->rss_caps.max_rwq_indirection_tables = 1056 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt); 1057 props->rss_caps.max_rwq_indirection_table_size = 1058 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size); 1059 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; 1060 props->max_wq_type_rq = 1061 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq); 1062 } 1063 1064 if (MLX5_CAP_GEN(mdev, tag_matching)) { 1065 props->tm_caps.max_num_tags = 1066 (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1; 1067 props->tm_caps.max_ops = 1068 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 1069 props->tm_caps.max_sge = MLX5_TM_MAX_SGE; 1070 } 1071 1072 if (MLX5_CAP_GEN(mdev, tag_matching) && 1073 MLX5_CAP_GEN(mdev, rndv_offload_rc)) { 1074 props->tm_caps.flags = IB_TM_CAP_RNDV_RC; 1075 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE; 1076 } 1077 1078 if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) { 1079 props->cq_caps.max_cq_moderation_count = 1080 MLX5_MAX_CQ_COUNT; 1081 props->cq_caps.max_cq_moderation_period = 1082 MLX5_MAX_CQ_PERIOD; 1083 } 1084 1085 if (offsetofend(typeof(resp), cqe_comp_caps) <= uhw_outlen) { 1086 resp.response_length += sizeof(resp.cqe_comp_caps); 1087 1088 if (MLX5_CAP_GEN(dev->mdev, cqe_compression)) { 1089 resp.cqe_comp_caps.max_num = 1090 MLX5_CAP_GEN(dev->mdev, 1091 cqe_compression_max_num); 1092 1093 resp.cqe_comp_caps.supported_format = 1094 MLX5_IB_CQE_RES_FORMAT_HASH | 1095 MLX5_IB_CQE_RES_FORMAT_CSUM; 1096 1097 if (MLX5_CAP_GEN(dev->mdev, mini_cqe_resp_stride_index)) 1098 resp.cqe_comp_caps.supported_format |= 1099 MLX5_IB_CQE_RES_FORMAT_CSUM_STRIDX; 1100 } 1101 } 1102 1103 if (offsetofend(typeof(resp), packet_pacing_caps) <= uhw_outlen && 1104 raw_support) { 1105 if (MLX5_CAP_QOS(mdev, packet_pacing) && 1106 MLX5_CAP_GEN(mdev, qos)) { 1107 resp.packet_pacing_caps.qp_rate_limit_max = 1108 MLX5_CAP_QOS(mdev, packet_pacing_max_rate); 1109 resp.packet_pacing_caps.qp_rate_limit_min = 1110 MLX5_CAP_QOS(mdev, packet_pacing_min_rate); 1111 resp.packet_pacing_caps.supported_qpts |= 1112 1 << IB_QPT_RAW_PACKET; 1113 if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) && 1114 MLX5_CAP_QOS(mdev, packet_pacing_typical_size)) 1115 resp.packet_pacing_caps.cap_flags |= 1116 MLX5_IB_PP_SUPPORT_BURST; 1117 } 1118 resp.response_length += sizeof(resp.packet_pacing_caps); 1119 } 1120 1121 if (offsetofend(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes) <= 1122 uhw_outlen) { 1123 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe)) 1124 resp.mlx5_ib_support_multi_pkt_send_wqes = 1125 MLX5_IB_ALLOW_MPW; 1126 1127 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe)) 1128 resp.mlx5_ib_support_multi_pkt_send_wqes |= 1129 MLX5_IB_SUPPORT_EMPW; 1130 1131 resp.response_length += 1132 sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes); 1133 } 1134 1135 if (offsetofend(typeof(resp), flags) <= uhw_outlen) { 1136 resp.response_length += sizeof(resp.flags); 1137 1138 if (MLX5_CAP_GEN(mdev, cqe_compression_128)) 1139 resp.flags |= 1140 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP; 1141 1142 if (MLX5_CAP_GEN(mdev, cqe_128_always)) 1143 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD; 1144 if (MLX5_CAP_GEN(mdev, qp_packet_based)) 1145 resp.flags |= 1146 MLX5_IB_QUERY_DEV_RESP_PACKET_BASED_CREDIT_MODE; 1147 1148 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_SCAT2CQE_DCT; 1149 } 1150 1151 if (offsetofend(typeof(resp), sw_parsing_caps) <= uhw_outlen) { 1152 resp.response_length += sizeof(resp.sw_parsing_caps); 1153 if (MLX5_CAP_ETH(mdev, swp)) { 1154 resp.sw_parsing_caps.sw_parsing_offloads |= 1155 MLX5_IB_SW_PARSING; 1156 1157 if (MLX5_CAP_ETH(mdev, swp_csum)) 1158 resp.sw_parsing_caps.sw_parsing_offloads |= 1159 MLX5_IB_SW_PARSING_CSUM; 1160 1161 if (MLX5_CAP_ETH(mdev, swp_lso)) 1162 resp.sw_parsing_caps.sw_parsing_offloads |= 1163 MLX5_IB_SW_PARSING_LSO; 1164 1165 if (resp.sw_parsing_caps.sw_parsing_offloads) 1166 resp.sw_parsing_caps.supported_qpts = 1167 BIT(IB_QPT_RAW_PACKET); 1168 } 1169 } 1170 1171 if (offsetofend(typeof(resp), striding_rq_caps) <= uhw_outlen && 1172 raw_support) { 1173 resp.response_length += sizeof(resp.striding_rq_caps); 1174 if (MLX5_CAP_GEN(mdev, striding_rq)) { 1175 resp.striding_rq_caps.min_single_stride_log_num_of_bytes = 1176 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES; 1177 resp.striding_rq_caps.max_single_stride_log_num_of_bytes = 1178 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES; 1179 if (MLX5_CAP_GEN(dev->mdev, ext_stride_num_range)) 1180 resp.striding_rq_caps 1181 .min_single_wqe_log_num_of_strides = 1182 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES; 1183 else 1184 resp.striding_rq_caps 1185 .min_single_wqe_log_num_of_strides = 1186 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES; 1187 resp.striding_rq_caps.max_single_wqe_log_num_of_strides = 1188 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES; 1189 resp.striding_rq_caps.supported_qpts = 1190 BIT(IB_QPT_RAW_PACKET); 1191 } 1192 } 1193 1194 if (offsetofend(typeof(resp), tunnel_offloads_caps) <= uhw_outlen) { 1195 resp.response_length += sizeof(resp.tunnel_offloads_caps); 1196 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan)) 1197 resp.tunnel_offloads_caps |= 1198 MLX5_IB_TUNNELED_OFFLOADS_VXLAN; 1199 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx)) 1200 resp.tunnel_offloads_caps |= 1201 MLX5_IB_TUNNELED_OFFLOADS_GENEVE; 1202 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) 1203 resp.tunnel_offloads_caps |= 1204 MLX5_IB_TUNNELED_OFFLOADS_GRE; 1205 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_gre)) 1206 resp.tunnel_offloads_caps |= 1207 MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE; 1208 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_udp)) 1209 resp.tunnel_offloads_caps |= 1210 MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP; 1211 } 1212 1213 if (offsetofend(typeof(resp), dci_streams_caps) <= uhw_outlen) { 1214 resp.response_length += sizeof(resp.dci_streams_caps); 1215 1216 resp.dci_streams_caps.max_log_num_concurent = 1217 MLX5_CAP_GEN(mdev, log_max_dci_stream_channels); 1218 1219 resp.dci_streams_caps.max_log_num_errored = 1220 MLX5_CAP_GEN(mdev, log_max_dci_errored_streams); 1221 } 1222 1223 if (offsetofend(typeof(resp), reserved) <= uhw_outlen) 1224 resp.response_length += sizeof(resp.reserved); 1225 1226 if (offsetofend(typeof(resp), reg_c0) <= uhw_outlen) { 1227 struct mlx5_eswitch *esw = mdev->priv.eswitch; 1228 1229 resp.response_length += sizeof(resp.reg_c0); 1230 1231 if (mlx5_eswitch_mode(mdev) == MLX5_ESWITCH_OFFLOADS && 1232 mlx5_eswitch_vport_match_metadata_enabled(esw)) 1233 fill_esw_mgr_reg_c0(mdev, &resp); 1234 } 1235 1236 if (uhw_outlen) { 1237 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 1238 1239 if (err) 1240 return err; 1241 } 1242 1243 return 0; 1244 } 1245 1246 static void translate_active_width(struct ib_device *ibdev, u16 active_width, 1247 u8 *ib_width) 1248 { 1249 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1250 1251 if (active_width & MLX5_PTYS_WIDTH_1X) 1252 *ib_width = IB_WIDTH_1X; 1253 else if (active_width & MLX5_PTYS_WIDTH_2X) 1254 *ib_width = IB_WIDTH_2X; 1255 else if (active_width & MLX5_PTYS_WIDTH_4X) 1256 *ib_width = IB_WIDTH_4X; 1257 else if (active_width & MLX5_PTYS_WIDTH_8X) 1258 *ib_width = IB_WIDTH_8X; 1259 else if (active_width & MLX5_PTYS_WIDTH_12X) 1260 *ib_width = IB_WIDTH_12X; 1261 else { 1262 mlx5_ib_dbg(dev, "Invalid active_width %d, setting width to default value: 4x\n", 1263 active_width); 1264 *ib_width = IB_WIDTH_4X; 1265 } 1266 1267 return; 1268 } 1269 1270 static int mlx5_mtu_to_ib_mtu(int mtu) 1271 { 1272 switch (mtu) { 1273 case 256: return 1; 1274 case 512: return 2; 1275 case 1024: return 3; 1276 case 2048: return 4; 1277 case 4096: return 5; 1278 default: 1279 pr_warn("invalid mtu\n"); 1280 return -1; 1281 } 1282 } 1283 1284 enum ib_max_vl_num { 1285 __IB_MAX_VL_0 = 1, 1286 __IB_MAX_VL_0_1 = 2, 1287 __IB_MAX_VL_0_3 = 3, 1288 __IB_MAX_VL_0_7 = 4, 1289 __IB_MAX_VL_0_14 = 5, 1290 }; 1291 1292 enum mlx5_vl_hw_cap { 1293 MLX5_VL_HW_0 = 1, 1294 MLX5_VL_HW_0_1 = 2, 1295 MLX5_VL_HW_0_2 = 3, 1296 MLX5_VL_HW_0_3 = 4, 1297 MLX5_VL_HW_0_4 = 5, 1298 MLX5_VL_HW_0_5 = 6, 1299 MLX5_VL_HW_0_6 = 7, 1300 MLX5_VL_HW_0_7 = 8, 1301 MLX5_VL_HW_0_14 = 15 1302 }; 1303 1304 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap, 1305 u8 *max_vl_num) 1306 { 1307 switch (vl_hw_cap) { 1308 case MLX5_VL_HW_0: 1309 *max_vl_num = __IB_MAX_VL_0; 1310 break; 1311 case MLX5_VL_HW_0_1: 1312 *max_vl_num = __IB_MAX_VL_0_1; 1313 break; 1314 case MLX5_VL_HW_0_3: 1315 *max_vl_num = __IB_MAX_VL_0_3; 1316 break; 1317 case MLX5_VL_HW_0_7: 1318 *max_vl_num = __IB_MAX_VL_0_7; 1319 break; 1320 case MLX5_VL_HW_0_14: 1321 *max_vl_num = __IB_MAX_VL_0_14; 1322 break; 1323 1324 default: 1325 return -EINVAL; 1326 } 1327 1328 return 0; 1329 } 1330 1331 static int mlx5_query_hca_port(struct ib_device *ibdev, u32 port, 1332 struct ib_port_attr *props) 1333 { 1334 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1335 struct mlx5_core_dev *mdev = dev->mdev; 1336 struct mlx5_hca_vport_context *rep; 1337 u16 max_mtu; 1338 u16 oper_mtu; 1339 int err; 1340 u16 ib_link_width_oper; 1341 u8 vl_hw_cap; 1342 1343 rep = kzalloc(sizeof(*rep), GFP_KERNEL); 1344 if (!rep) { 1345 err = -ENOMEM; 1346 goto out; 1347 } 1348 1349 /* props being zeroed by the caller, avoid zeroing it here */ 1350 1351 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep); 1352 if (err) 1353 goto out; 1354 1355 props->lid = rep->lid; 1356 props->lmc = rep->lmc; 1357 props->sm_lid = rep->sm_lid; 1358 props->sm_sl = rep->sm_sl; 1359 props->state = rep->vport_state; 1360 props->phys_state = rep->port_physical_state; 1361 props->port_cap_flags = rep->cap_mask1; 1362 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size)); 1363 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 1364 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size)); 1365 props->bad_pkey_cntr = rep->pkey_violation_counter; 1366 props->qkey_viol_cntr = rep->qkey_violation_counter; 1367 props->subnet_timeout = rep->subnet_timeout; 1368 props->init_type_reply = rep->init_type_reply; 1369 1370 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) 1371 props->port_cap_flags2 = rep->cap_mask2; 1372 1373 err = mlx5_query_ib_port_oper(mdev, &ib_link_width_oper, 1374 &props->active_speed, port); 1375 if (err) 1376 goto out; 1377 1378 translate_active_width(ibdev, ib_link_width_oper, &props->active_width); 1379 1380 mlx5_query_port_max_mtu(mdev, &max_mtu, port); 1381 1382 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu); 1383 1384 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port); 1385 1386 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu); 1387 1388 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port); 1389 if (err) 1390 goto out; 1391 1392 err = translate_max_vl_num(ibdev, vl_hw_cap, 1393 &props->max_vl_num); 1394 out: 1395 kfree(rep); 1396 return err; 1397 } 1398 1399 int mlx5_ib_query_port(struct ib_device *ibdev, u32 port, 1400 struct ib_port_attr *props) 1401 { 1402 unsigned int count; 1403 int ret; 1404 1405 switch (mlx5_get_vport_access_method(ibdev)) { 1406 case MLX5_VPORT_ACCESS_METHOD_MAD: 1407 ret = mlx5_query_mad_ifc_port(ibdev, port, props); 1408 break; 1409 1410 case MLX5_VPORT_ACCESS_METHOD_HCA: 1411 ret = mlx5_query_hca_port(ibdev, port, props); 1412 break; 1413 1414 case MLX5_VPORT_ACCESS_METHOD_NIC: 1415 ret = mlx5_query_port_roce(ibdev, port, props); 1416 break; 1417 1418 default: 1419 ret = -EINVAL; 1420 } 1421 1422 if (!ret && props) { 1423 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1424 struct mlx5_core_dev *mdev; 1425 bool put_mdev = true; 1426 1427 mdev = mlx5_ib_get_native_port_mdev(dev, port, NULL); 1428 if (!mdev) { 1429 /* If the port isn't affiliated yet query the master. 1430 * The master and slave will have the same values. 1431 */ 1432 mdev = dev->mdev; 1433 port = 1; 1434 put_mdev = false; 1435 } 1436 count = mlx5_core_reserved_gids_count(mdev); 1437 if (put_mdev) 1438 mlx5_ib_put_native_port_mdev(dev, port); 1439 props->gid_tbl_len -= count; 1440 } 1441 return ret; 1442 } 1443 1444 static int mlx5_ib_rep_query_port(struct ib_device *ibdev, u32 port, 1445 struct ib_port_attr *props) 1446 { 1447 return mlx5_query_port_roce(ibdev, port, props); 1448 } 1449 1450 static int mlx5_ib_rep_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 1451 u16 *pkey) 1452 { 1453 /* Default special Pkey for representor device port as per the 1454 * IB specification 1.3 section 10.9.1.2. 1455 */ 1456 *pkey = 0xffff; 1457 return 0; 1458 } 1459 1460 static int mlx5_ib_query_gid(struct ib_device *ibdev, u32 port, int index, 1461 union ib_gid *gid) 1462 { 1463 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1464 struct mlx5_core_dev *mdev = dev->mdev; 1465 1466 switch (mlx5_get_vport_access_method(ibdev)) { 1467 case MLX5_VPORT_ACCESS_METHOD_MAD: 1468 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid); 1469 1470 case MLX5_VPORT_ACCESS_METHOD_HCA: 1471 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid); 1472 1473 default: 1474 return -EINVAL; 1475 } 1476 1477 } 1478 1479 static int mlx5_query_hca_nic_pkey(struct ib_device *ibdev, u32 port, 1480 u16 index, u16 *pkey) 1481 { 1482 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1483 struct mlx5_core_dev *mdev; 1484 bool put_mdev = true; 1485 u32 mdev_port_num; 1486 int err; 1487 1488 mdev = mlx5_ib_get_native_port_mdev(dev, port, &mdev_port_num); 1489 if (!mdev) { 1490 /* The port isn't affiliated yet, get the PKey from the master 1491 * port. For RoCE the PKey tables will be the same. 1492 */ 1493 put_mdev = false; 1494 mdev = dev->mdev; 1495 mdev_port_num = 1; 1496 } 1497 1498 err = mlx5_query_hca_vport_pkey(mdev, 0, mdev_port_num, 0, 1499 index, pkey); 1500 if (put_mdev) 1501 mlx5_ib_put_native_port_mdev(dev, port); 1502 1503 return err; 1504 } 1505 1506 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 1507 u16 *pkey) 1508 { 1509 switch (mlx5_get_vport_access_method(ibdev)) { 1510 case MLX5_VPORT_ACCESS_METHOD_MAD: 1511 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey); 1512 1513 case MLX5_VPORT_ACCESS_METHOD_HCA: 1514 case MLX5_VPORT_ACCESS_METHOD_NIC: 1515 return mlx5_query_hca_nic_pkey(ibdev, port, index, pkey); 1516 default: 1517 return -EINVAL; 1518 } 1519 } 1520 1521 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 1522 struct ib_device_modify *props) 1523 { 1524 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1525 struct mlx5_reg_node_desc in; 1526 struct mlx5_reg_node_desc out; 1527 int err; 1528 1529 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 1530 return -EOPNOTSUPP; 1531 1532 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 1533 return 0; 1534 1535 /* 1536 * If possible, pass node desc to FW, so it can generate 1537 * a 144 trap. If cmd fails, just ignore. 1538 */ 1539 memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1540 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, 1541 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 1542 if (err) 1543 return err; 1544 1545 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1546 1547 return err; 1548 } 1549 1550 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u32 port_num, u32 mask, 1551 u32 value) 1552 { 1553 struct mlx5_hca_vport_context ctx = {}; 1554 struct mlx5_core_dev *mdev; 1555 u32 mdev_port_num; 1556 int err; 1557 1558 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 1559 if (!mdev) 1560 return -ENODEV; 1561 1562 err = mlx5_query_hca_vport_context(mdev, 0, mdev_port_num, 0, &ctx); 1563 if (err) 1564 goto out; 1565 1566 if (~ctx.cap_mask1_perm & mask) { 1567 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n", 1568 mask, ctx.cap_mask1_perm); 1569 err = -EINVAL; 1570 goto out; 1571 } 1572 1573 ctx.cap_mask1 = value; 1574 ctx.cap_mask1_perm = mask; 1575 err = mlx5_core_modify_hca_vport_context(mdev, 0, mdev_port_num, 1576 0, &ctx); 1577 1578 out: 1579 mlx5_ib_put_native_port_mdev(dev, port_num); 1580 1581 return err; 1582 } 1583 1584 static int mlx5_ib_modify_port(struct ib_device *ibdev, u32 port, int mask, 1585 struct ib_port_modify *props) 1586 { 1587 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1588 struct ib_port_attr attr; 1589 u32 tmp; 1590 int err; 1591 u32 change_mask; 1592 u32 value; 1593 bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) == 1594 IB_LINK_LAYER_INFINIBAND); 1595 1596 /* CM layer calls ib_modify_port() regardless of the link layer. For 1597 * Ethernet ports, qkey violation and Port capabilities are meaningless. 1598 */ 1599 if (!is_ib) 1600 return 0; 1601 1602 if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) { 1603 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask; 1604 value = ~props->clr_port_cap_mask | props->set_port_cap_mask; 1605 return set_port_caps_atomic(dev, port, change_mask, value); 1606 } 1607 1608 mutex_lock(&dev->cap_mask_mutex); 1609 1610 err = ib_query_port(ibdev, port, &attr); 1611 if (err) 1612 goto out; 1613 1614 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 1615 ~props->clr_port_cap_mask; 1616 1617 err = mlx5_set_port_caps(dev->mdev, port, tmp); 1618 1619 out: 1620 mutex_unlock(&dev->cap_mask_mutex); 1621 return err; 1622 } 1623 1624 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps) 1625 { 1626 mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n", 1627 caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n"); 1628 } 1629 1630 static u16 calc_dynamic_bfregs(int uars_per_sys_page) 1631 { 1632 /* Large page with non 4k uar support might limit the dynamic size */ 1633 if (uars_per_sys_page == 1 && PAGE_SIZE > 4096) 1634 return MLX5_MIN_DYN_BFREGS; 1635 1636 return MLX5_MAX_DYN_BFREGS; 1637 } 1638 1639 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k, 1640 struct mlx5_ib_alloc_ucontext_req_v2 *req, 1641 struct mlx5_bfreg_info *bfregi) 1642 { 1643 int uars_per_sys_page; 1644 int bfregs_per_sys_page; 1645 int ref_bfregs = req->total_num_bfregs; 1646 1647 if (req->total_num_bfregs == 0) 1648 return -EINVAL; 1649 1650 BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE); 1651 BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE); 1652 1653 if (req->total_num_bfregs > MLX5_MAX_BFREGS) 1654 return -ENOMEM; 1655 1656 uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k); 1657 bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR; 1658 /* This holds the required static allocation asked by the user */ 1659 req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page); 1660 if (req->num_low_latency_bfregs > req->total_num_bfregs - 1) 1661 return -EINVAL; 1662 1663 bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page; 1664 bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page); 1665 bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs; 1666 bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page; 1667 1668 mlx5_ib_dbg(dev, "uar_4k: fw support %s, lib support %s, user requested %d bfregs, allocated %d, total bfregs %d, using %d sys pages\n", 1669 MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no", 1670 lib_uar_4k ? "yes" : "no", ref_bfregs, 1671 req->total_num_bfregs, bfregi->total_num_bfregs, 1672 bfregi->num_sys_pages); 1673 1674 return 0; 1675 } 1676 1677 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context) 1678 { 1679 struct mlx5_bfreg_info *bfregi; 1680 int err; 1681 int i; 1682 1683 bfregi = &context->bfregi; 1684 for (i = 0; i < bfregi->num_static_sys_pages; i++) { 1685 err = mlx5_cmd_uar_alloc(dev->mdev, &bfregi->sys_pages[i], 1686 context->devx_uid); 1687 if (err) 1688 goto error; 1689 1690 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]); 1691 } 1692 1693 for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++) 1694 bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX; 1695 1696 return 0; 1697 1698 error: 1699 for (--i; i >= 0; i--) 1700 if (mlx5_cmd_uar_dealloc(dev->mdev, bfregi->sys_pages[i], 1701 context->devx_uid)) 1702 mlx5_ib_warn(dev, "failed to free uar %d\n", i); 1703 1704 return err; 1705 } 1706 1707 static void deallocate_uars(struct mlx5_ib_dev *dev, 1708 struct mlx5_ib_ucontext *context) 1709 { 1710 struct mlx5_bfreg_info *bfregi; 1711 int i; 1712 1713 bfregi = &context->bfregi; 1714 for (i = 0; i < bfregi->num_sys_pages; i++) 1715 if (i < bfregi->num_static_sys_pages || 1716 bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX) 1717 mlx5_cmd_uar_dealloc(dev->mdev, bfregi->sys_pages[i], 1718 context->devx_uid); 1719 } 1720 1721 int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp) 1722 { 1723 int err = 0; 1724 1725 mutex_lock(&dev->lb.mutex); 1726 if (td) 1727 dev->lb.user_td++; 1728 if (qp) 1729 dev->lb.qps++; 1730 1731 if (dev->lb.user_td == 2 || 1732 dev->lb.qps == 1) { 1733 if (!dev->lb.enabled) { 1734 err = mlx5_nic_vport_update_local_lb(dev->mdev, true); 1735 dev->lb.enabled = true; 1736 } 1737 } 1738 1739 mutex_unlock(&dev->lb.mutex); 1740 1741 return err; 1742 } 1743 1744 void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp) 1745 { 1746 mutex_lock(&dev->lb.mutex); 1747 if (td) 1748 dev->lb.user_td--; 1749 if (qp) 1750 dev->lb.qps--; 1751 1752 if (dev->lb.user_td == 1 && 1753 dev->lb.qps == 0) { 1754 if (dev->lb.enabled) { 1755 mlx5_nic_vport_update_local_lb(dev->mdev, false); 1756 dev->lb.enabled = false; 1757 } 1758 } 1759 1760 mutex_unlock(&dev->lb.mutex); 1761 } 1762 1763 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn, 1764 u16 uid) 1765 { 1766 int err; 1767 1768 if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1769 return 0; 1770 1771 err = mlx5_cmd_alloc_transport_domain(dev->mdev, tdn, uid); 1772 if (err) 1773 return err; 1774 1775 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) || 1776 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) && 1777 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 1778 return err; 1779 1780 return mlx5_ib_enable_lb(dev, true, false); 1781 } 1782 1783 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn, 1784 u16 uid) 1785 { 1786 if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1787 return; 1788 1789 mlx5_cmd_dealloc_transport_domain(dev->mdev, tdn, uid); 1790 1791 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) || 1792 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) && 1793 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 1794 return; 1795 1796 mlx5_ib_disable_lb(dev, true, false); 1797 } 1798 1799 static int set_ucontext_resp(struct ib_ucontext *uctx, 1800 struct mlx5_ib_alloc_ucontext_resp *resp) 1801 { 1802 struct ib_device *ibdev = uctx->device; 1803 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1804 struct mlx5_ib_ucontext *context = to_mucontext(uctx); 1805 struct mlx5_bfreg_info *bfregi = &context->bfregi; 1806 1807 if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) { 1808 resp->dump_fill_mkey = dev->mkeys.dump_fill_mkey; 1809 resp->comp_mask |= 1810 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY; 1811 } 1812 1813 resp->qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp); 1814 if (dev->wc_support) 1815 resp->bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, 1816 log_bf_reg_size); 1817 resp->cache_line_size = cache_line_size(); 1818 resp->max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq); 1819 resp->max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq); 1820 resp->max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 1821 resp->max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 1822 resp->max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz); 1823 resp->cqe_version = context->cqe_version; 1824 resp->log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 1825 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT; 1826 resp->num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 1827 MLX5_CAP_GEN(dev->mdev, 1828 num_of_uars_per_page) : 1; 1829 resp->tot_bfregs = bfregi->lib_uar_dyn ? 0 : 1830 bfregi->total_num_bfregs - bfregi->num_dyn_bfregs; 1831 resp->num_ports = dev->num_ports; 1832 resp->cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE | 1833 MLX5_USER_CMDS_SUPP_UHW_CREATE_AH; 1834 1835 if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) { 1836 mlx5_query_min_inline(dev->mdev, &resp->eth_min_inline); 1837 resp->eth_min_inline++; 1838 } 1839 1840 if (dev->mdev->clock_info) 1841 resp->clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1); 1842 1843 /* 1844 * We don't want to expose information from the PCI bar that is located 1845 * after 4096 bytes, so if the arch only supports larger pages, let's 1846 * pretend we don't support reading the HCA's core clock. This is also 1847 * forced by mmap function. 1848 */ 1849 if (PAGE_SIZE <= 4096) { 1850 resp->comp_mask |= 1851 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET; 1852 resp->hca_core_clock_offset = 1853 offsetof(struct mlx5_init_seg, 1854 internal_timer_h) % PAGE_SIZE; 1855 } 1856 1857 if (MLX5_CAP_GEN(dev->mdev, ece_support)) 1858 resp->comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_ECE; 1859 1860 if (rt_supported(MLX5_CAP_GEN(dev->mdev, sq_ts_format)) && 1861 rt_supported(MLX5_CAP_GEN(dev->mdev, rq_ts_format)) && 1862 rt_supported(MLX5_CAP_ROCE(dev->mdev, qp_ts_format))) 1863 resp->comp_mask |= 1864 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_REAL_TIME_TS; 1865 1866 resp->num_dyn_bfregs = bfregi->num_dyn_bfregs; 1867 1868 if (MLX5_CAP_GEN(dev->mdev, drain_sigerr)) 1869 resp->comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_SQD2RTS; 1870 1871 resp->comp_mask |= 1872 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_MKEY_UPDATE_TAG; 1873 1874 return 0; 1875 } 1876 1877 static int mlx5_ib_alloc_ucontext(struct ib_ucontext *uctx, 1878 struct ib_udata *udata) 1879 { 1880 struct ib_device *ibdev = uctx->device; 1881 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1882 struct mlx5_ib_alloc_ucontext_req_v2 req = {}; 1883 struct mlx5_ib_alloc_ucontext_resp resp = {}; 1884 struct mlx5_ib_ucontext *context = to_mucontext(uctx); 1885 struct mlx5_bfreg_info *bfregi; 1886 int ver; 1887 int err; 1888 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2, 1889 max_cqe_version); 1890 bool lib_uar_4k; 1891 bool lib_uar_dyn; 1892 1893 if (!dev->ib_active) 1894 return -EAGAIN; 1895 1896 if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) 1897 ver = 0; 1898 else if (udata->inlen >= min_req_v2) 1899 ver = 2; 1900 else 1901 return -EINVAL; 1902 1903 err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req))); 1904 if (err) 1905 return err; 1906 1907 if (req.flags & ~MLX5_IB_ALLOC_UCTX_DEVX) 1908 return -EOPNOTSUPP; 1909 1910 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2) 1911 return -EOPNOTSUPP; 1912 1913 req.total_num_bfregs = ALIGN(req.total_num_bfregs, 1914 MLX5_NON_FP_BFREGS_PER_UAR); 1915 if (req.num_low_latency_bfregs > req.total_num_bfregs - 1) 1916 return -EINVAL; 1917 1918 if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) { 1919 err = mlx5_ib_devx_create(dev, true); 1920 if (err < 0) 1921 goto out_ctx; 1922 context->devx_uid = err; 1923 } 1924 1925 lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR; 1926 lib_uar_dyn = req.lib_caps & MLX5_LIB_CAP_DYN_UAR; 1927 bfregi = &context->bfregi; 1928 1929 if (lib_uar_dyn) { 1930 bfregi->lib_uar_dyn = lib_uar_dyn; 1931 goto uar_done; 1932 } 1933 1934 /* updates req->total_num_bfregs */ 1935 err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi); 1936 if (err) 1937 goto out_devx; 1938 1939 mutex_init(&bfregi->lock); 1940 bfregi->lib_uar_4k = lib_uar_4k; 1941 bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count), 1942 GFP_KERNEL); 1943 if (!bfregi->count) { 1944 err = -ENOMEM; 1945 goto out_devx; 1946 } 1947 1948 bfregi->sys_pages = kcalloc(bfregi->num_sys_pages, 1949 sizeof(*bfregi->sys_pages), 1950 GFP_KERNEL); 1951 if (!bfregi->sys_pages) { 1952 err = -ENOMEM; 1953 goto out_count; 1954 } 1955 1956 err = allocate_uars(dev, context); 1957 if (err) 1958 goto out_sys_pages; 1959 1960 uar_done: 1961 err = mlx5_ib_alloc_transport_domain(dev, &context->tdn, 1962 context->devx_uid); 1963 if (err) 1964 goto out_uars; 1965 1966 INIT_LIST_HEAD(&context->db_page_list); 1967 mutex_init(&context->db_page_mutex); 1968 1969 context->cqe_version = min_t(__u8, 1970 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version), 1971 req.max_cqe_version); 1972 1973 err = set_ucontext_resp(uctx, &resp); 1974 if (err) 1975 goto out_mdev; 1976 1977 resp.response_length = min(udata->outlen, sizeof(resp)); 1978 err = ib_copy_to_udata(udata, &resp, resp.response_length); 1979 if (err) 1980 goto out_mdev; 1981 1982 bfregi->ver = ver; 1983 bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs; 1984 context->lib_caps = req.lib_caps; 1985 print_lib_caps(dev, context->lib_caps); 1986 1987 if (mlx5_ib_lag_should_assign_affinity(dev)) { 1988 u32 port = mlx5_core_native_port_num(dev->mdev) - 1; 1989 1990 atomic_set(&context->tx_port_affinity, 1991 atomic_add_return( 1992 1, &dev->port[port].roce.tx_port_affinity)); 1993 } 1994 1995 return 0; 1996 1997 out_mdev: 1998 mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid); 1999 2000 out_uars: 2001 deallocate_uars(dev, context); 2002 2003 out_sys_pages: 2004 kfree(bfregi->sys_pages); 2005 2006 out_count: 2007 kfree(bfregi->count); 2008 2009 out_devx: 2010 if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) 2011 mlx5_ib_devx_destroy(dev, context->devx_uid); 2012 2013 out_ctx: 2014 return err; 2015 } 2016 2017 static int mlx5_ib_query_ucontext(struct ib_ucontext *ibcontext, 2018 struct uverbs_attr_bundle *attrs) 2019 { 2020 struct mlx5_ib_alloc_ucontext_resp uctx_resp = {}; 2021 int ret; 2022 2023 ret = set_ucontext_resp(ibcontext, &uctx_resp); 2024 if (ret) 2025 return ret; 2026 2027 uctx_resp.response_length = 2028 min_t(size_t, 2029 uverbs_attr_get_len(attrs, 2030 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX), 2031 sizeof(uctx_resp)); 2032 2033 ret = uverbs_copy_to_struct_or_zero(attrs, 2034 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX, 2035 &uctx_resp, 2036 sizeof(uctx_resp)); 2037 return ret; 2038 } 2039 2040 static void mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 2041 { 2042 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 2043 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 2044 struct mlx5_bfreg_info *bfregi; 2045 2046 bfregi = &context->bfregi; 2047 mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid); 2048 2049 deallocate_uars(dev, context); 2050 kfree(bfregi->sys_pages); 2051 kfree(bfregi->count); 2052 2053 if (context->devx_uid) 2054 mlx5_ib_devx_destroy(dev, context->devx_uid); 2055 } 2056 2057 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, 2058 int uar_idx) 2059 { 2060 int fw_uars_per_page; 2061 2062 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1; 2063 2064 return (dev->mdev->bar_addr >> PAGE_SHIFT) + uar_idx / fw_uars_per_page; 2065 } 2066 2067 static u64 uar_index2paddress(struct mlx5_ib_dev *dev, 2068 int uar_idx) 2069 { 2070 unsigned int fw_uars_per_page; 2071 2072 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 2073 MLX5_UARS_IN_PAGE : 1; 2074 2075 return (dev->mdev->bar_addr + (uar_idx / fw_uars_per_page) * PAGE_SIZE); 2076 } 2077 2078 static int get_command(unsigned long offset) 2079 { 2080 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 2081 } 2082 2083 static int get_arg(unsigned long offset) 2084 { 2085 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 2086 } 2087 2088 static int get_index(unsigned long offset) 2089 { 2090 return get_arg(offset); 2091 } 2092 2093 /* Index resides in an extra byte to enable larger values than 255 */ 2094 static int get_extended_index(unsigned long offset) 2095 { 2096 return get_arg(offset) | ((offset >> 16) & 0xff) << 8; 2097 } 2098 2099 2100 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 2101 { 2102 } 2103 2104 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) 2105 { 2106 switch (cmd) { 2107 case MLX5_IB_MMAP_WC_PAGE: 2108 return "WC"; 2109 case MLX5_IB_MMAP_REGULAR_PAGE: 2110 return "best effort WC"; 2111 case MLX5_IB_MMAP_NC_PAGE: 2112 return "NC"; 2113 case MLX5_IB_MMAP_DEVICE_MEM: 2114 return "Device Memory"; 2115 default: 2116 return "Unknown"; 2117 } 2118 } 2119 2120 static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev, 2121 struct vm_area_struct *vma, 2122 struct mlx5_ib_ucontext *context) 2123 { 2124 if ((vma->vm_end - vma->vm_start != PAGE_SIZE) || 2125 !(vma->vm_flags & VM_SHARED)) 2126 return -EINVAL; 2127 2128 if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1) 2129 return -EOPNOTSUPP; 2130 2131 if (vma->vm_flags & (VM_WRITE | VM_EXEC)) 2132 return -EPERM; 2133 vm_flags_clear(vma, VM_MAYWRITE); 2134 2135 if (!dev->mdev->clock_info) 2136 return -EOPNOTSUPP; 2137 2138 return vm_insert_page(vma, vma->vm_start, 2139 virt_to_page(dev->mdev->clock_info)); 2140 } 2141 2142 static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry) 2143 { 2144 struct mlx5_user_mmap_entry *mentry = to_mmmap(entry); 2145 struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device); 2146 struct mlx5_var_table *var_table = &dev->var_table; 2147 struct mlx5_ib_ucontext *context = to_mucontext(entry->ucontext); 2148 2149 switch (mentry->mmap_flag) { 2150 case MLX5_IB_MMAP_TYPE_MEMIC: 2151 case MLX5_IB_MMAP_TYPE_MEMIC_OP: 2152 mlx5_ib_dm_mmap_free(dev, mentry); 2153 break; 2154 case MLX5_IB_MMAP_TYPE_VAR: 2155 mutex_lock(&var_table->bitmap_lock); 2156 clear_bit(mentry->page_idx, var_table->bitmap); 2157 mutex_unlock(&var_table->bitmap_lock); 2158 kfree(mentry); 2159 break; 2160 case MLX5_IB_MMAP_TYPE_UAR_WC: 2161 case MLX5_IB_MMAP_TYPE_UAR_NC: 2162 mlx5_cmd_uar_dealloc(dev->mdev, mentry->page_idx, 2163 context->devx_uid); 2164 kfree(mentry); 2165 break; 2166 default: 2167 WARN_ON(true); 2168 } 2169 } 2170 2171 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, 2172 struct vm_area_struct *vma, 2173 struct mlx5_ib_ucontext *context) 2174 { 2175 struct mlx5_bfreg_info *bfregi = &context->bfregi; 2176 int err; 2177 unsigned long idx; 2178 phys_addr_t pfn; 2179 pgprot_t prot; 2180 u32 bfreg_dyn_idx = 0; 2181 u32 uar_index; 2182 int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC); 2183 int max_valid_idx = dyn_uar ? bfregi->num_sys_pages : 2184 bfregi->num_static_sys_pages; 2185 2186 if (bfregi->lib_uar_dyn) 2187 return -EINVAL; 2188 2189 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 2190 return -EINVAL; 2191 2192 if (dyn_uar) 2193 idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages; 2194 else 2195 idx = get_index(vma->vm_pgoff); 2196 2197 if (idx >= max_valid_idx) { 2198 mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n", 2199 idx, max_valid_idx); 2200 return -EINVAL; 2201 } 2202 2203 switch (cmd) { 2204 case MLX5_IB_MMAP_WC_PAGE: 2205 case MLX5_IB_MMAP_ALLOC_WC: 2206 case MLX5_IB_MMAP_REGULAR_PAGE: 2207 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */ 2208 prot = pgprot_writecombine(vma->vm_page_prot); 2209 break; 2210 case MLX5_IB_MMAP_NC_PAGE: 2211 prot = pgprot_noncached(vma->vm_page_prot); 2212 break; 2213 default: 2214 return -EINVAL; 2215 } 2216 2217 if (dyn_uar) { 2218 int uars_per_page; 2219 2220 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k); 2221 bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR); 2222 if (bfreg_dyn_idx >= bfregi->total_num_bfregs) { 2223 mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n", 2224 bfreg_dyn_idx, bfregi->total_num_bfregs); 2225 return -EINVAL; 2226 } 2227 2228 mutex_lock(&bfregi->lock); 2229 /* Fail if uar already allocated, first bfreg index of each 2230 * page holds its count. 2231 */ 2232 if (bfregi->count[bfreg_dyn_idx]) { 2233 mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx); 2234 mutex_unlock(&bfregi->lock); 2235 return -EINVAL; 2236 } 2237 2238 bfregi->count[bfreg_dyn_idx]++; 2239 mutex_unlock(&bfregi->lock); 2240 2241 err = mlx5_cmd_uar_alloc(dev->mdev, &uar_index, 2242 context->devx_uid); 2243 if (err) { 2244 mlx5_ib_warn(dev, "UAR alloc failed\n"); 2245 goto free_bfreg; 2246 } 2247 } else { 2248 uar_index = bfregi->sys_pages[idx]; 2249 } 2250 2251 pfn = uar_index2pfn(dev, uar_index); 2252 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn); 2253 2254 err = rdma_user_mmap_io(&context->ibucontext, vma, pfn, PAGE_SIZE, 2255 prot, NULL); 2256 if (err) { 2257 mlx5_ib_err(dev, 2258 "rdma_user_mmap_io failed with error=%d, mmap_cmd=%s\n", 2259 err, mmap_cmd2str(cmd)); 2260 goto err; 2261 } 2262 2263 if (dyn_uar) 2264 bfregi->sys_pages[idx] = uar_index; 2265 return 0; 2266 2267 err: 2268 if (!dyn_uar) 2269 return err; 2270 2271 mlx5_cmd_uar_dealloc(dev->mdev, idx, context->devx_uid); 2272 2273 free_bfreg: 2274 mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx); 2275 2276 return err; 2277 } 2278 2279 static unsigned long mlx5_vma_to_pgoff(struct vm_area_struct *vma) 2280 { 2281 unsigned long idx; 2282 u8 command; 2283 2284 command = get_command(vma->vm_pgoff); 2285 idx = get_extended_index(vma->vm_pgoff); 2286 2287 return (command << 16 | idx); 2288 } 2289 2290 static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev, 2291 struct vm_area_struct *vma, 2292 struct ib_ucontext *ucontext) 2293 { 2294 struct mlx5_user_mmap_entry *mentry; 2295 struct rdma_user_mmap_entry *entry; 2296 unsigned long pgoff; 2297 pgprot_t prot; 2298 phys_addr_t pfn; 2299 int ret; 2300 2301 pgoff = mlx5_vma_to_pgoff(vma); 2302 entry = rdma_user_mmap_entry_get_pgoff(ucontext, pgoff); 2303 if (!entry) 2304 return -EINVAL; 2305 2306 mentry = to_mmmap(entry); 2307 pfn = (mentry->address >> PAGE_SHIFT); 2308 if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR || 2309 mentry->mmap_flag == MLX5_IB_MMAP_TYPE_UAR_NC) 2310 prot = pgprot_noncached(vma->vm_page_prot); 2311 else 2312 prot = pgprot_writecombine(vma->vm_page_prot); 2313 ret = rdma_user_mmap_io(ucontext, vma, pfn, 2314 entry->npages * PAGE_SIZE, 2315 prot, 2316 entry); 2317 rdma_user_mmap_entry_put(&mentry->rdma_entry); 2318 return ret; 2319 } 2320 2321 static u64 mlx5_entry_to_mmap_offset(struct mlx5_user_mmap_entry *entry) 2322 { 2323 u64 cmd = (entry->rdma_entry.start_pgoff >> 16) & 0xFFFF; 2324 u64 index = entry->rdma_entry.start_pgoff & 0xFFFF; 2325 2326 return (((index >> 8) << 16) | (cmd << MLX5_IB_MMAP_CMD_SHIFT) | 2327 (index & 0xFF)) << PAGE_SHIFT; 2328 } 2329 2330 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 2331 { 2332 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 2333 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 2334 unsigned long command; 2335 phys_addr_t pfn; 2336 2337 command = get_command(vma->vm_pgoff); 2338 switch (command) { 2339 case MLX5_IB_MMAP_WC_PAGE: 2340 case MLX5_IB_MMAP_ALLOC_WC: 2341 if (!dev->wc_support) 2342 return -EPERM; 2343 fallthrough; 2344 case MLX5_IB_MMAP_NC_PAGE: 2345 case MLX5_IB_MMAP_REGULAR_PAGE: 2346 return uar_mmap(dev, command, vma, context); 2347 2348 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 2349 return -ENOSYS; 2350 2351 case MLX5_IB_MMAP_CORE_CLOCK: 2352 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 2353 return -EINVAL; 2354 2355 if (vma->vm_flags & VM_WRITE) 2356 return -EPERM; 2357 vm_flags_clear(vma, VM_MAYWRITE); 2358 2359 /* Don't expose to user-space information it shouldn't have */ 2360 if (PAGE_SIZE > 4096) 2361 return -EOPNOTSUPP; 2362 2363 pfn = (dev->mdev->iseg_base + 2364 offsetof(struct mlx5_init_seg, internal_timer_h)) >> 2365 PAGE_SHIFT; 2366 return rdma_user_mmap_io(&context->ibucontext, vma, pfn, 2367 PAGE_SIZE, 2368 pgprot_noncached(vma->vm_page_prot), 2369 NULL); 2370 case MLX5_IB_MMAP_CLOCK_INFO: 2371 return mlx5_ib_mmap_clock_info_page(dev, vma, context); 2372 2373 default: 2374 return mlx5_ib_mmap_offset(dev, vma, ibcontext); 2375 } 2376 2377 return 0; 2378 } 2379 2380 static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 2381 { 2382 struct mlx5_ib_pd *pd = to_mpd(ibpd); 2383 struct ib_device *ibdev = ibpd->device; 2384 struct mlx5_ib_alloc_pd_resp resp; 2385 int err; 2386 u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {}; 2387 u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {}; 2388 u16 uid = 0; 2389 struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context( 2390 udata, struct mlx5_ib_ucontext, ibucontext); 2391 2392 uid = context ? context->devx_uid : 0; 2393 MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD); 2394 MLX5_SET(alloc_pd_in, in, uid, uid); 2395 err = mlx5_cmd_exec_inout(to_mdev(ibdev)->mdev, alloc_pd, in, out); 2396 if (err) 2397 return err; 2398 2399 pd->pdn = MLX5_GET(alloc_pd_out, out, pd); 2400 pd->uid = uid; 2401 if (udata) { 2402 resp.pdn = pd->pdn; 2403 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 2404 mlx5_cmd_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn, uid); 2405 return -EFAULT; 2406 } 2407 } 2408 2409 return 0; 2410 } 2411 2412 static int mlx5_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 2413 { 2414 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 2415 struct mlx5_ib_pd *mpd = to_mpd(pd); 2416 2417 return mlx5_cmd_dealloc_pd(mdev->mdev, mpd->pdn, mpd->uid); 2418 } 2419 2420 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 2421 { 2422 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 2423 struct mlx5_ib_qp *mqp = to_mqp(ibqp); 2424 int err; 2425 u16 uid; 2426 2427 uid = ibqp->pd ? 2428 to_mpd(ibqp->pd)->uid : 0; 2429 2430 if (mqp->flags & IB_QP_CREATE_SOURCE_QPN) { 2431 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n"); 2432 return -EOPNOTSUPP; 2433 } 2434 2435 err = mlx5_cmd_attach_mcg(dev->mdev, gid, ibqp->qp_num, uid); 2436 if (err) 2437 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 2438 ibqp->qp_num, gid->raw); 2439 2440 return err; 2441 } 2442 2443 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 2444 { 2445 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 2446 int err; 2447 u16 uid; 2448 2449 uid = ibqp->pd ? 2450 to_mpd(ibqp->pd)->uid : 0; 2451 err = mlx5_cmd_detach_mcg(dev->mdev, gid, ibqp->qp_num, uid); 2452 if (err) 2453 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 2454 ibqp->qp_num, gid->raw); 2455 2456 return err; 2457 } 2458 2459 static int init_node_data(struct mlx5_ib_dev *dev) 2460 { 2461 int err; 2462 2463 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc); 2464 if (err) 2465 return err; 2466 2467 dev->mdev->rev_id = dev->mdev->pdev->revision; 2468 2469 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid); 2470 } 2471 2472 static ssize_t fw_pages_show(struct device *device, 2473 struct device_attribute *attr, char *buf) 2474 { 2475 struct mlx5_ib_dev *dev = 2476 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2477 2478 return sysfs_emit(buf, "%d\n", dev->mdev->priv.fw_pages); 2479 } 2480 static DEVICE_ATTR_RO(fw_pages); 2481 2482 static ssize_t reg_pages_show(struct device *device, 2483 struct device_attribute *attr, char *buf) 2484 { 2485 struct mlx5_ib_dev *dev = 2486 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2487 2488 return sysfs_emit(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages)); 2489 } 2490 static DEVICE_ATTR_RO(reg_pages); 2491 2492 static ssize_t hca_type_show(struct device *device, 2493 struct device_attribute *attr, char *buf) 2494 { 2495 struct mlx5_ib_dev *dev = 2496 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2497 2498 return sysfs_emit(buf, "MT%d\n", dev->mdev->pdev->device); 2499 } 2500 static DEVICE_ATTR_RO(hca_type); 2501 2502 static ssize_t hw_rev_show(struct device *device, 2503 struct device_attribute *attr, char *buf) 2504 { 2505 struct mlx5_ib_dev *dev = 2506 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2507 2508 return sysfs_emit(buf, "%x\n", dev->mdev->rev_id); 2509 } 2510 static DEVICE_ATTR_RO(hw_rev); 2511 2512 static ssize_t board_id_show(struct device *device, 2513 struct device_attribute *attr, char *buf) 2514 { 2515 struct mlx5_ib_dev *dev = 2516 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2517 2518 return sysfs_emit(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 2519 dev->mdev->board_id); 2520 } 2521 static DEVICE_ATTR_RO(board_id); 2522 2523 static struct attribute *mlx5_class_attributes[] = { 2524 &dev_attr_hw_rev.attr, 2525 &dev_attr_hca_type.attr, 2526 &dev_attr_board_id.attr, 2527 &dev_attr_fw_pages.attr, 2528 &dev_attr_reg_pages.attr, 2529 NULL, 2530 }; 2531 2532 static const struct attribute_group mlx5_attr_group = { 2533 .attrs = mlx5_class_attributes, 2534 }; 2535 2536 static void pkey_change_handler(struct work_struct *work) 2537 { 2538 struct mlx5_ib_port_resources *ports = 2539 container_of(work, struct mlx5_ib_port_resources, 2540 pkey_change_work); 2541 2542 if (!ports->gsi) 2543 /* 2544 * We got this event before device was fully configured 2545 * and MAD registration code wasn't called/finished yet. 2546 */ 2547 return; 2548 2549 mlx5_ib_gsi_pkey_change(ports->gsi); 2550 } 2551 2552 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev) 2553 { 2554 struct mlx5_ib_qp *mqp; 2555 struct mlx5_ib_cq *send_mcq, *recv_mcq; 2556 struct mlx5_core_cq *mcq; 2557 struct list_head cq_armed_list; 2558 unsigned long flags_qp; 2559 unsigned long flags_cq; 2560 unsigned long flags; 2561 2562 INIT_LIST_HEAD(&cq_armed_list); 2563 2564 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 2565 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 2566 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 2567 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 2568 if (mqp->sq.tail != mqp->sq.head) { 2569 send_mcq = to_mcq(mqp->ibqp.send_cq); 2570 spin_lock_irqsave(&send_mcq->lock, flags_cq); 2571 if (send_mcq->mcq.comp && 2572 mqp->ibqp.send_cq->comp_handler) { 2573 if (!send_mcq->mcq.reset_notify_added) { 2574 send_mcq->mcq.reset_notify_added = 1; 2575 list_add_tail(&send_mcq->mcq.reset_notify, 2576 &cq_armed_list); 2577 } 2578 } 2579 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 2580 } 2581 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 2582 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 2583 /* no handling is needed for SRQ */ 2584 if (!mqp->ibqp.srq) { 2585 if (mqp->rq.tail != mqp->rq.head) { 2586 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 2587 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 2588 if (recv_mcq->mcq.comp && 2589 mqp->ibqp.recv_cq->comp_handler) { 2590 if (!recv_mcq->mcq.reset_notify_added) { 2591 recv_mcq->mcq.reset_notify_added = 1; 2592 list_add_tail(&recv_mcq->mcq.reset_notify, 2593 &cq_armed_list); 2594 } 2595 } 2596 spin_unlock_irqrestore(&recv_mcq->lock, 2597 flags_cq); 2598 } 2599 } 2600 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 2601 } 2602 /*At that point all inflight post send were put to be executed as of we 2603 * lock/unlock above locks Now need to arm all involved CQs. 2604 */ 2605 list_for_each_entry(mcq, &cq_armed_list, reset_notify) { 2606 mcq->comp(mcq, NULL); 2607 } 2608 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 2609 } 2610 2611 static void delay_drop_handler(struct work_struct *work) 2612 { 2613 int err; 2614 struct mlx5_ib_delay_drop *delay_drop = 2615 container_of(work, struct mlx5_ib_delay_drop, 2616 delay_drop_work); 2617 2618 atomic_inc(&delay_drop->events_cnt); 2619 2620 mutex_lock(&delay_drop->lock); 2621 err = mlx5_core_set_delay_drop(delay_drop->dev, delay_drop->timeout); 2622 if (err) { 2623 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n", 2624 delay_drop->timeout); 2625 delay_drop->activate = false; 2626 } 2627 mutex_unlock(&delay_drop->lock); 2628 } 2629 2630 static void handle_general_event(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe, 2631 struct ib_event *ibev) 2632 { 2633 u32 port = (eqe->data.port.port >> 4) & 0xf; 2634 2635 switch (eqe->sub_type) { 2636 case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT: 2637 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == 2638 IB_LINK_LAYER_ETHERNET) 2639 schedule_work(&ibdev->delay_drop.delay_drop_work); 2640 break; 2641 default: /* do nothing */ 2642 return; 2643 } 2644 } 2645 2646 static int handle_port_change(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe, 2647 struct ib_event *ibev) 2648 { 2649 u32 port = (eqe->data.port.port >> 4) & 0xf; 2650 2651 ibev->element.port_num = port; 2652 2653 switch (eqe->sub_type) { 2654 case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: 2655 case MLX5_PORT_CHANGE_SUBTYPE_DOWN: 2656 case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: 2657 /* In RoCE, port up/down events are handled in 2658 * mlx5_netdev_event(). 2659 */ 2660 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == 2661 IB_LINK_LAYER_ETHERNET) 2662 return -EINVAL; 2663 2664 ibev->event = (eqe->sub_type == MLX5_PORT_CHANGE_SUBTYPE_ACTIVE) ? 2665 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 2666 break; 2667 2668 case MLX5_PORT_CHANGE_SUBTYPE_LID: 2669 ibev->event = IB_EVENT_LID_CHANGE; 2670 break; 2671 2672 case MLX5_PORT_CHANGE_SUBTYPE_PKEY: 2673 ibev->event = IB_EVENT_PKEY_CHANGE; 2674 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work); 2675 break; 2676 2677 case MLX5_PORT_CHANGE_SUBTYPE_GUID: 2678 ibev->event = IB_EVENT_GID_CHANGE; 2679 break; 2680 2681 case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: 2682 ibev->event = IB_EVENT_CLIENT_REREGISTER; 2683 break; 2684 default: 2685 return -EINVAL; 2686 } 2687 2688 return 0; 2689 } 2690 2691 static void mlx5_ib_handle_event(struct work_struct *_work) 2692 { 2693 struct mlx5_ib_event_work *work = 2694 container_of(_work, struct mlx5_ib_event_work, work); 2695 struct mlx5_ib_dev *ibdev; 2696 struct ib_event ibev; 2697 bool fatal = false; 2698 2699 if (work->is_slave) { 2700 ibdev = mlx5_ib_get_ibdev_from_mpi(work->mpi); 2701 if (!ibdev) 2702 goto out; 2703 } else { 2704 ibdev = work->dev; 2705 } 2706 2707 switch (work->event) { 2708 case MLX5_DEV_EVENT_SYS_ERROR: 2709 ibev.event = IB_EVENT_DEVICE_FATAL; 2710 mlx5_ib_handle_internal_error(ibdev); 2711 ibev.element.port_num = (u8)(unsigned long)work->param; 2712 fatal = true; 2713 break; 2714 case MLX5_EVENT_TYPE_PORT_CHANGE: 2715 if (handle_port_change(ibdev, work->param, &ibev)) 2716 goto out; 2717 break; 2718 case MLX5_EVENT_TYPE_GENERAL_EVENT: 2719 handle_general_event(ibdev, work->param, &ibev); 2720 fallthrough; 2721 default: 2722 goto out; 2723 } 2724 2725 ibev.device = &ibdev->ib_dev; 2726 2727 if (!rdma_is_port_valid(&ibdev->ib_dev, ibev.element.port_num)) { 2728 mlx5_ib_warn(ibdev, "warning: event on port %d\n", ibev.element.port_num); 2729 goto out; 2730 } 2731 2732 if (ibdev->ib_active) 2733 ib_dispatch_event(&ibev); 2734 2735 if (fatal) 2736 ibdev->ib_active = false; 2737 out: 2738 kfree(work); 2739 } 2740 2741 static int mlx5_ib_event(struct notifier_block *nb, 2742 unsigned long event, void *param) 2743 { 2744 struct mlx5_ib_event_work *work; 2745 2746 work = kmalloc(sizeof(*work), GFP_ATOMIC); 2747 if (!work) 2748 return NOTIFY_DONE; 2749 2750 INIT_WORK(&work->work, mlx5_ib_handle_event); 2751 work->dev = container_of(nb, struct mlx5_ib_dev, mdev_events); 2752 work->is_slave = false; 2753 work->param = param; 2754 work->event = event; 2755 2756 queue_work(mlx5_ib_event_wq, &work->work); 2757 2758 return NOTIFY_OK; 2759 } 2760 2761 static int mlx5_ib_event_slave_port(struct notifier_block *nb, 2762 unsigned long event, void *param) 2763 { 2764 struct mlx5_ib_event_work *work; 2765 2766 work = kmalloc(sizeof(*work), GFP_ATOMIC); 2767 if (!work) 2768 return NOTIFY_DONE; 2769 2770 INIT_WORK(&work->work, mlx5_ib_handle_event); 2771 work->mpi = container_of(nb, struct mlx5_ib_multiport_info, mdev_events); 2772 work->is_slave = true; 2773 work->param = param; 2774 work->event = event; 2775 queue_work(mlx5_ib_event_wq, &work->work); 2776 2777 return NOTIFY_OK; 2778 } 2779 2780 static int set_has_smi_cap(struct mlx5_ib_dev *dev) 2781 { 2782 struct mlx5_hca_vport_context vport_ctx; 2783 int err; 2784 int port; 2785 2786 if (MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_IB) 2787 return 0; 2788 2789 for (port = 1; port <= dev->num_ports; port++) { 2790 if (!MLX5_CAP_GEN(dev->mdev, ib_virt)) { 2791 dev->port_caps[port - 1].has_smi = true; 2792 continue; 2793 } 2794 err = mlx5_query_hca_vport_context(dev->mdev, 0, port, 0, 2795 &vport_ctx); 2796 if (err) { 2797 mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n", 2798 port, err); 2799 return err; 2800 } 2801 dev->port_caps[port - 1].has_smi = vport_ctx.has_smi; 2802 } 2803 2804 return 0; 2805 } 2806 2807 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 2808 { 2809 unsigned int port; 2810 2811 rdma_for_each_port (&dev->ib_dev, port) 2812 mlx5_query_ext_port_caps(dev, port); 2813 } 2814 2815 static u8 mlx5_get_umr_fence(u8 umr_fence_cap) 2816 { 2817 switch (umr_fence_cap) { 2818 case MLX5_CAP_UMR_FENCE_NONE: 2819 return MLX5_FENCE_MODE_NONE; 2820 case MLX5_CAP_UMR_FENCE_SMALL: 2821 return MLX5_FENCE_MODE_INITIATOR_SMALL; 2822 default: 2823 return MLX5_FENCE_MODE_STRONG_ORDERING; 2824 } 2825 } 2826 2827 static int mlx5_ib_dev_res_init(struct mlx5_ib_dev *dev) 2828 { 2829 struct mlx5_ib_resources *devr = &dev->devr; 2830 struct ib_srq_init_attr attr; 2831 struct ib_device *ibdev; 2832 struct ib_cq_init_attr cq_attr = {.cqe = 1}; 2833 int port; 2834 int ret = 0; 2835 2836 ibdev = &dev->ib_dev; 2837 2838 if (!MLX5_CAP_GEN(dev->mdev, xrc)) 2839 return -EOPNOTSUPP; 2840 2841 devr->p0 = ib_alloc_pd(ibdev, 0); 2842 if (IS_ERR(devr->p0)) 2843 return PTR_ERR(devr->p0); 2844 2845 devr->c0 = ib_create_cq(ibdev, NULL, NULL, NULL, &cq_attr); 2846 if (IS_ERR(devr->c0)) { 2847 ret = PTR_ERR(devr->c0); 2848 goto error1; 2849 } 2850 2851 ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn0, 0); 2852 if (ret) 2853 goto error2; 2854 2855 ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn1, 0); 2856 if (ret) 2857 goto error3; 2858 2859 memset(&attr, 0, sizeof(attr)); 2860 attr.attr.max_sge = 1; 2861 attr.attr.max_wr = 1; 2862 attr.srq_type = IB_SRQT_XRC; 2863 attr.ext.cq = devr->c0; 2864 2865 devr->s0 = ib_create_srq(devr->p0, &attr); 2866 if (IS_ERR(devr->s0)) { 2867 ret = PTR_ERR(devr->s0); 2868 goto err_create; 2869 } 2870 2871 memset(&attr, 0, sizeof(attr)); 2872 attr.attr.max_sge = 1; 2873 attr.attr.max_wr = 1; 2874 attr.srq_type = IB_SRQT_BASIC; 2875 2876 devr->s1 = ib_create_srq(devr->p0, &attr); 2877 if (IS_ERR(devr->s1)) { 2878 ret = PTR_ERR(devr->s1); 2879 goto error6; 2880 } 2881 2882 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) 2883 INIT_WORK(&devr->ports[port].pkey_change_work, 2884 pkey_change_handler); 2885 2886 return 0; 2887 2888 error6: 2889 ib_destroy_srq(devr->s0); 2890 err_create: 2891 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0); 2892 error3: 2893 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0); 2894 error2: 2895 ib_destroy_cq(devr->c0); 2896 error1: 2897 ib_dealloc_pd(devr->p0); 2898 return ret; 2899 } 2900 2901 static void mlx5_ib_dev_res_cleanup(struct mlx5_ib_dev *dev) 2902 { 2903 struct mlx5_ib_resources *devr = &dev->devr; 2904 int port; 2905 2906 /* 2907 * Make sure no change P_Key work items are still executing. 2908 * 2909 * At this stage, the mlx5_ib_event should be unregistered 2910 * and it ensures that no new works are added. 2911 */ 2912 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) 2913 cancel_work_sync(&devr->ports[port].pkey_change_work); 2914 2915 ib_destroy_srq(devr->s1); 2916 ib_destroy_srq(devr->s0); 2917 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0); 2918 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0); 2919 ib_destroy_cq(devr->c0); 2920 ib_dealloc_pd(devr->p0); 2921 } 2922 2923 static u32 get_core_cap_flags(struct ib_device *ibdev, 2924 struct mlx5_hca_vport_context *rep) 2925 { 2926 struct mlx5_ib_dev *dev = to_mdev(ibdev); 2927 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1); 2928 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type); 2929 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version); 2930 bool raw_support = !mlx5_core_mp_enabled(dev->mdev); 2931 u32 ret = 0; 2932 2933 if (rep->grh_required) 2934 ret |= RDMA_CORE_CAP_IB_GRH_REQUIRED; 2935 2936 if (ll == IB_LINK_LAYER_INFINIBAND) 2937 return ret | RDMA_CORE_PORT_IBA_IB; 2938 2939 if (raw_support) 2940 ret |= RDMA_CORE_PORT_RAW_PACKET; 2941 2942 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP)) 2943 return ret; 2944 2945 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP)) 2946 return ret; 2947 2948 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP) 2949 ret |= RDMA_CORE_PORT_IBA_ROCE; 2950 2951 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP) 2952 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2953 2954 return ret; 2955 } 2956 2957 static int mlx5_port_immutable(struct ib_device *ibdev, u32 port_num, 2958 struct ib_port_immutable *immutable) 2959 { 2960 struct ib_port_attr attr; 2961 struct mlx5_ib_dev *dev = to_mdev(ibdev); 2962 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num); 2963 struct mlx5_hca_vport_context rep = {0}; 2964 int err; 2965 2966 err = ib_query_port(ibdev, port_num, &attr); 2967 if (err) 2968 return err; 2969 2970 if (ll == IB_LINK_LAYER_INFINIBAND) { 2971 err = mlx5_query_hca_vport_context(dev->mdev, 0, port_num, 0, 2972 &rep); 2973 if (err) 2974 return err; 2975 } 2976 2977 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2978 immutable->gid_tbl_len = attr.gid_tbl_len; 2979 immutable->core_cap_flags = get_core_cap_flags(ibdev, &rep); 2980 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2981 2982 return 0; 2983 } 2984 2985 static int mlx5_port_rep_immutable(struct ib_device *ibdev, u32 port_num, 2986 struct ib_port_immutable *immutable) 2987 { 2988 struct ib_port_attr attr; 2989 int err; 2990 2991 immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET; 2992 2993 err = ib_query_port(ibdev, port_num, &attr); 2994 if (err) 2995 return err; 2996 2997 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2998 immutable->gid_tbl_len = attr.gid_tbl_len; 2999 immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET; 3000 3001 return 0; 3002 } 3003 3004 static void get_dev_fw_str(struct ib_device *ibdev, char *str) 3005 { 3006 struct mlx5_ib_dev *dev = 3007 container_of(ibdev, struct mlx5_ib_dev, ib_dev); 3008 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d", 3009 fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev), 3010 fw_rev_sub(dev->mdev)); 3011 } 3012 3013 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev) 3014 { 3015 struct mlx5_core_dev *mdev = dev->mdev; 3016 struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev, 3017 MLX5_FLOW_NAMESPACE_LAG); 3018 struct mlx5_flow_table *ft; 3019 int err; 3020 3021 if (!ns || !mlx5_lag_is_active(mdev)) 3022 return 0; 3023 3024 err = mlx5_cmd_create_vport_lag(mdev); 3025 if (err) 3026 return err; 3027 3028 ft = mlx5_create_lag_demux_flow_table(ns, 0, 0); 3029 if (IS_ERR(ft)) { 3030 err = PTR_ERR(ft); 3031 goto err_destroy_vport_lag; 3032 } 3033 3034 dev->flow_db->lag_demux_ft = ft; 3035 dev->lag_ports = mlx5_lag_get_num_ports(mdev); 3036 dev->lag_active = true; 3037 return 0; 3038 3039 err_destroy_vport_lag: 3040 mlx5_cmd_destroy_vport_lag(mdev); 3041 return err; 3042 } 3043 3044 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev) 3045 { 3046 struct mlx5_core_dev *mdev = dev->mdev; 3047 3048 if (dev->lag_active) { 3049 dev->lag_active = false; 3050 3051 mlx5_destroy_flow_table(dev->flow_db->lag_demux_ft); 3052 dev->flow_db->lag_demux_ft = NULL; 3053 3054 mlx5_cmd_destroy_vport_lag(mdev); 3055 } 3056 } 3057 3058 static void mlx5_netdev_notifier_register(struct mlx5_roce *roce, 3059 struct net_device *netdev) 3060 { 3061 int err; 3062 3063 if (roce->tracking_netdev) 3064 return; 3065 roce->tracking_netdev = netdev; 3066 roce->nb.notifier_call = mlx5_netdev_event; 3067 err = register_netdevice_notifier_dev_net(netdev, &roce->nb, &roce->nn); 3068 WARN_ON(err); 3069 } 3070 3071 static void mlx5_netdev_notifier_unregister(struct mlx5_roce *roce) 3072 { 3073 if (!roce->tracking_netdev) 3074 return; 3075 unregister_netdevice_notifier_dev_net(roce->tracking_netdev, &roce->nb, 3076 &roce->nn); 3077 roce->tracking_netdev = NULL; 3078 } 3079 3080 static int mlx5e_mdev_notifier_event(struct notifier_block *nb, 3081 unsigned long event, void *data) 3082 { 3083 struct mlx5_roce *roce = container_of(nb, struct mlx5_roce, mdev_nb); 3084 struct net_device *netdev = data; 3085 3086 switch (event) { 3087 case MLX5_DRIVER_EVENT_UPLINK_NETDEV: 3088 if (netdev) 3089 mlx5_netdev_notifier_register(roce, netdev); 3090 else 3091 mlx5_netdev_notifier_unregister(roce); 3092 break; 3093 default: 3094 return NOTIFY_DONE; 3095 } 3096 3097 return NOTIFY_OK; 3098 } 3099 3100 static void mlx5_mdev_netdev_track(struct mlx5_ib_dev *dev, u32 port_num) 3101 { 3102 struct mlx5_roce *roce = &dev->port[port_num].roce; 3103 3104 roce->mdev_nb.notifier_call = mlx5e_mdev_notifier_event; 3105 mlx5_blocking_notifier_register(dev->mdev, &roce->mdev_nb); 3106 mlx5_core_uplink_netdev_event_replay(dev->mdev); 3107 } 3108 3109 static void mlx5_mdev_netdev_untrack(struct mlx5_ib_dev *dev, u32 port_num) 3110 { 3111 struct mlx5_roce *roce = &dev->port[port_num].roce; 3112 3113 mlx5_blocking_notifier_unregister(dev->mdev, &roce->mdev_nb); 3114 mlx5_netdev_notifier_unregister(roce); 3115 } 3116 3117 static int mlx5_enable_eth(struct mlx5_ib_dev *dev) 3118 { 3119 int err; 3120 3121 if (!dev->is_rep && dev->profile != &raw_eth_profile) { 3122 err = mlx5_nic_vport_enable_roce(dev->mdev); 3123 if (err) 3124 return err; 3125 } 3126 3127 err = mlx5_eth_lag_init(dev); 3128 if (err) 3129 goto err_disable_roce; 3130 3131 return 0; 3132 3133 err_disable_roce: 3134 if (!dev->is_rep && dev->profile != &raw_eth_profile) 3135 mlx5_nic_vport_disable_roce(dev->mdev); 3136 3137 return err; 3138 } 3139 3140 static void mlx5_disable_eth(struct mlx5_ib_dev *dev) 3141 { 3142 mlx5_eth_lag_cleanup(dev); 3143 if (!dev->is_rep && dev->profile != &raw_eth_profile) 3144 mlx5_nic_vport_disable_roce(dev->mdev); 3145 } 3146 3147 static int mlx5_ib_rn_get_params(struct ib_device *device, u32 port_num, 3148 enum rdma_netdev_t type, 3149 struct rdma_netdev_alloc_params *params) 3150 { 3151 if (type != RDMA_NETDEV_IPOIB) 3152 return -EOPNOTSUPP; 3153 3154 return mlx5_rdma_rn_get_params(to_mdev(device)->mdev, device, params); 3155 } 3156 3157 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf, 3158 size_t count, loff_t *pos) 3159 { 3160 struct mlx5_ib_delay_drop *delay_drop = filp->private_data; 3161 char lbuf[20]; 3162 int len; 3163 3164 len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout); 3165 return simple_read_from_buffer(buf, count, pos, lbuf, len); 3166 } 3167 3168 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf, 3169 size_t count, loff_t *pos) 3170 { 3171 struct mlx5_ib_delay_drop *delay_drop = filp->private_data; 3172 u32 timeout; 3173 u32 var; 3174 3175 if (kstrtouint_from_user(buf, count, 0, &var)) 3176 return -EFAULT; 3177 3178 timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 3179 1000); 3180 if (timeout != var) 3181 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n", 3182 timeout); 3183 3184 delay_drop->timeout = timeout; 3185 3186 return count; 3187 } 3188 3189 static const struct file_operations fops_delay_drop_timeout = { 3190 .owner = THIS_MODULE, 3191 .open = simple_open, 3192 .write = delay_drop_timeout_write, 3193 .read = delay_drop_timeout_read, 3194 }; 3195 3196 static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev, 3197 struct mlx5_ib_multiport_info *mpi) 3198 { 3199 u32 port_num = mlx5_core_native_port_num(mpi->mdev) - 1; 3200 struct mlx5_ib_port *port = &ibdev->port[port_num]; 3201 int comps; 3202 int err; 3203 int i; 3204 3205 lockdep_assert_held(&mlx5_ib_multiport_mutex); 3206 3207 mlx5_core_mp_event_replay(ibdev->mdev, 3208 MLX5_DRIVER_EVENT_AFFILIATION_REMOVED, 3209 NULL); 3210 mlx5_core_mp_event_replay(mpi->mdev, 3211 MLX5_DRIVER_EVENT_AFFILIATION_REMOVED, 3212 NULL); 3213 3214 mlx5_ib_cleanup_cong_debugfs(ibdev, port_num); 3215 3216 spin_lock(&port->mp.mpi_lock); 3217 if (!mpi->ibdev) { 3218 spin_unlock(&port->mp.mpi_lock); 3219 return; 3220 } 3221 3222 mpi->ibdev = NULL; 3223 3224 spin_unlock(&port->mp.mpi_lock); 3225 if (mpi->mdev_events.notifier_call) 3226 mlx5_notifier_unregister(mpi->mdev, &mpi->mdev_events); 3227 mpi->mdev_events.notifier_call = NULL; 3228 mlx5_mdev_netdev_untrack(ibdev, port_num); 3229 spin_lock(&port->mp.mpi_lock); 3230 3231 comps = mpi->mdev_refcnt; 3232 if (comps) { 3233 mpi->unaffiliate = true; 3234 init_completion(&mpi->unref_comp); 3235 spin_unlock(&port->mp.mpi_lock); 3236 3237 for (i = 0; i < comps; i++) 3238 wait_for_completion(&mpi->unref_comp); 3239 3240 spin_lock(&port->mp.mpi_lock); 3241 mpi->unaffiliate = false; 3242 } 3243 3244 port->mp.mpi = NULL; 3245 3246 spin_unlock(&port->mp.mpi_lock); 3247 3248 err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev); 3249 3250 mlx5_ib_dbg(ibdev, "unaffiliated port %u\n", port_num + 1); 3251 /* Log an error, still needed to cleanup the pointers and add 3252 * it back to the list. 3253 */ 3254 if (err) 3255 mlx5_ib_err(ibdev, "Failed to unaffiliate port %u\n", 3256 port_num + 1); 3257 3258 ibdev->port[port_num].roce.last_port_state = IB_PORT_DOWN; 3259 } 3260 3261 static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev, 3262 struct mlx5_ib_multiport_info *mpi) 3263 { 3264 u32 port_num = mlx5_core_native_port_num(mpi->mdev) - 1; 3265 u64 key; 3266 int err; 3267 3268 lockdep_assert_held(&mlx5_ib_multiport_mutex); 3269 3270 spin_lock(&ibdev->port[port_num].mp.mpi_lock); 3271 if (ibdev->port[port_num].mp.mpi) { 3272 mlx5_ib_dbg(ibdev, "port %u already affiliated.\n", 3273 port_num + 1); 3274 spin_unlock(&ibdev->port[port_num].mp.mpi_lock); 3275 return false; 3276 } 3277 3278 ibdev->port[port_num].mp.mpi = mpi; 3279 mpi->ibdev = ibdev; 3280 mpi->mdev_events.notifier_call = NULL; 3281 spin_unlock(&ibdev->port[port_num].mp.mpi_lock); 3282 3283 err = mlx5_nic_vport_affiliate_multiport(ibdev->mdev, mpi->mdev); 3284 if (err) 3285 goto unbind; 3286 3287 mlx5_mdev_netdev_track(ibdev, port_num); 3288 3289 mpi->mdev_events.notifier_call = mlx5_ib_event_slave_port; 3290 mlx5_notifier_register(mpi->mdev, &mpi->mdev_events); 3291 3292 mlx5_ib_init_cong_debugfs(ibdev, port_num); 3293 3294 key = mpi->mdev->priv.adev_idx; 3295 mlx5_core_mp_event_replay(mpi->mdev, 3296 MLX5_DRIVER_EVENT_AFFILIATION_DONE, 3297 &key); 3298 mlx5_core_mp_event_replay(ibdev->mdev, 3299 MLX5_DRIVER_EVENT_AFFILIATION_DONE, 3300 &key); 3301 3302 return true; 3303 3304 unbind: 3305 mlx5_ib_unbind_slave_port(ibdev, mpi); 3306 return false; 3307 } 3308 3309 static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev) 3310 { 3311 u32 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 3312 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 3313 port_num + 1); 3314 struct mlx5_ib_multiport_info *mpi; 3315 int err; 3316 u32 i; 3317 3318 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 3319 return 0; 3320 3321 err = mlx5_query_nic_vport_system_image_guid(dev->mdev, 3322 &dev->sys_image_guid); 3323 if (err) 3324 return err; 3325 3326 err = mlx5_nic_vport_enable_roce(dev->mdev); 3327 if (err) 3328 return err; 3329 3330 mutex_lock(&mlx5_ib_multiport_mutex); 3331 for (i = 0; i < dev->num_ports; i++) { 3332 bool bound = false; 3333 3334 /* build a stub multiport info struct for the native port. */ 3335 if (i == port_num) { 3336 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL); 3337 if (!mpi) { 3338 mutex_unlock(&mlx5_ib_multiport_mutex); 3339 mlx5_nic_vport_disable_roce(dev->mdev); 3340 return -ENOMEM; 3341 } 3342 3343 mpi->is_master = true; 3344 mpi->mdev = dev->mdev; 3345 mpi->sys_image_guid = dev->sys_image_guid; 3346 dev->port[i].mp.mpi = mpi; 3347 mpi->ibdev = dev; 3348 mpi = NULL; 3349 continue; 3350 } 3351 3352 list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list, 3353 list) { 3354 if (dev->sys_image_guid == mpi->sys_image_guid && 3355 (mlx5_core_native_port_num(mpi->mdev) - 1) == i) { 3356 bound = mlx5_ib_bind_slave_port(dev, mpi); 3357 } 3358 3359 if (bound) { 3360 dev_dbg(mpi->mdev->device, 3361 "removing port from unaffiliated list.\n"); 3362 mlx5_ib_dbg(dev, "port %d bound\n", i + 1); 3363 list_del(&mpi->list); 3364 break; 3365 } 3366 } 3367 if (!bound) 3368 mlx5_ib_dbg(dev, "no free port found for port %d\n", 3369 i + 1); 3370 } 3371 3372 list_add_tail(&dev->ib_dev_list, &mlx5_ib_dev_list); 3373 mutex_unlock(&mlx5_ib_multiport_mutex); 3374 return err; 3375 } 3376 3377 static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev) 3378 { 3379 u32 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 3380 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 3381 port_num + 1); 3382 u32 i; 3383 3384 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 3385 return; 3386 3387 mutex_lock(&mlx5_ib_multiport_mutex); 3388 for (i = 0; i < dev->num_ports; i++) { 3389 if (dev->port[i].mp.mpi) { 3390 /* Destroy the native port stub */ 3391 if (i == port_num) { 3392 kfree(dev->port[i].mp.mpi); 3393 dev->port[i].mp.mpi = NULL; 3394 } else { 3395 mlx5_ib_dbg(dev, "unbinding port_num: %u\n", 3396 i + 1); 3397 list_add_tail(&dev->port[i].mp.mpi->list, 3398 &mlx5_ib_unaffiliated_port_list); 3399 mlx5_ib_unbind_slave_port(dev, 3400 dev->port[i].mp.mpi); 3401 } 3402 } 3403 } 3404 3405 mlx5_ib_dbg(dev, "removing from devlist\n"); 3406 list_del(&dev->ib_dev_list); 3407 mutex_unlock(&mlx5_ib_multiport_mutex); 3408 3409 mlx5_nic_vport_disable_roce(dev->mdev); 3410 } 3411 3412 static int mmap_obj_cleanup(struct ib_uobject *uobject, 3413 enum rdma_remove_reason why, 3414 struct uverbs_attr_bundle *attrs) 3415 { 3416 struct mlx5_user_mmap_entry *obj = uobject->object; 3417 3418 rdma_user_mmap_entry_remove(&obj->rdma_entry); 3419 return 0; 3420 } 3421 3422 static int mlx5_rdma_user_mmap_entry_insert(struct mlx5_ib_ucontext *c, 3423 struct mlx5_user_mmap_entry *entry, 3424 size_t length) 3425 { 3426 return rdma_user_mmap_entry_insert_range( 3427 &c->ibucontext, &entry->rdma_entry, length, 3428 (MLX5_IB_MMAP_OFFSET_START << 16), 3429 ((MLX5_IB_MMAP_OFFSET_END << 16) + (1UL << 16) - 1)); 3430 } 3431 3432 static struct mlx5_user_mmap_entry * 3433 alloc_var_entry(struct mlx5_ib_ucontext *c) 3434 { 3435 struct mlx5_user_mmap_entry *entry; 3436 struct mlx5_var_table *var_table; 3437 u32 page_idx; 3438 int err; 3439 3440 var_table = &to_mdev(c->ibucontext.device)->var_table; 3441 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 3442 if (!entry) 3443 return ERR_PTR(-ENOMEM); 3444 3445 mutex_lock(&var_table->bitmap_lock); 3446 page_idx = find_first_zero_bit(var_table->bitmap, 3447 var_table->num_var_hw_entries); 3448 if (page_idx >= var_table->num_var_hw_entries) { 3449 err = -ENOSPC; 3450 mutex_unlock(&var_table->bitmap_lock); 3451 goto end; 3452 } 3453 3454 set_bit(page_idx, var_table->bitmap); 3455 mutex_unlock(&var_table->bitmap_lock); 3456 3457 entry->address = var_table->hw_start_addr + 3458 (page_idx * var_table->stride_size); 3459 entry->page_idx = page_idx; 3460 entry->mmap_flag = MLX5_IB_MMAP_TYPE_VAR; 3461 3462 err = mlx5_rdma_user_mmap_entry_insert(c, entry, 3463 var_table->stride_size); 3464 if (err) 3465 goto err_insert; 3466 3467 return entry; 3468 3469 err_insert: 3470 mutex_lock(&var_table->bitmap_lock); 3471 clear_bit(page_idx, var_table->bitmap); 3472 mutex_unlock(&var_table->bitmap_lock); 3473 end: 3474 kfree(entry); 3475 return ERR_PTR(err); 3476 } 3477 3478 static int UVERBS_HANDLER(MLX5_IB_METHOD_VAR_OBJ_ALLOC)( 3479 struct uverbs_attr_bundle *attrs) 3480 { 3481 struct ib_uobject *uobj = uverbs_attr_get_uobject( 3482 attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE); 3483 struct mlx5_ib_ucontext *c; 3484 struct mlx5_user_mmap_entry *entry; 3485 u64 mmap_offset; 3486 u32 length; 3487 int err; 3488 3489 c = to_mucontext(ib_uverbs_get_ucontext(attrs)); 3490 if (IS_ERR(c)) 3491 return PTR_ERR(c); 3492 3493 entry = alloc_var_entry(c); 3494 if (IS_ERR(entry)) 3495 return PTR_ERR(entry); 3496 3497 mmap_offset = mlx5_entry_to_mmap_offset(entry); 3498 length = entry->rdma_entry.npages * PAGE_SIZE; 3499 uobj->object = entry; 3500 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE); 3501 3502 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET, 3503 &mmap_offset, sizeof(mmap_offset)); 3504 if (err) 3505 return err; 3506 3507 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID, 3508 &entry->page_idx, sizeof(entry->page_idx)); 3509 if (err) 3510 return err; 3511 3512 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH, 3513 &length, sizeof(length)); 3514 return err; 3515 } 3516 3517 DECLARE_UVERBS_NAMED_METHOD( 3518 MLX5_IB_METHOD_VAR_OBJ_ALLOC, 3519 UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE, 3520 MLX5_IB_OBJECT_VAR, 3521 UVERBS_ACCESS_NEW, 3522 UA_MANDATORY), 3523 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID, 3524 UVERBS_ATTR_TYPE(u32), 3525 UA_MANDATORY), 3526 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH, 3527 UVERBS_ATTR_TYPE(u32), 3528 UA_MANDATORY), 3529 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET, 3530 UVERBS_ATTR_TYPE(u64), 3531 UA_MANDATORY)); 3532 3533 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 3534 MLX5_IB_METHOD_VAR_OBJ_DESTROY, 3535 UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_DESTROY_HANDLE, 3536 MLX5_IB_OBJECT_VAR, 3537 UVERBS_ACCESS_DESTROY, 3538 UA_MANDATORY)); 3539 3540 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_VAR, 3541 UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup), 3542 &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_ALLOC), 3543 &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_DESTROY)); 3544 3545 static bool var_is_supported(struct ib_device *device) 3546 { 3547 struct mlx5_ib_dev *dev = to_mdev(device); 3548 3549 return (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 3550 MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q); 3551 } 3552 3553 static struct mlx5_user_mmap_entry * 3554 alloc_uar_entry(struct mlx5_ib_ucontext *c, 3555 enum mlx5_ib_uapi_uar_alloc_type alloc_type) 3556 { 3557 struct mlx5_user_mmap_entry *entry; 3558 struct mlx5_ib_dev *dev; 3559 u32 uar_index; 3560 int err; 3561 3562 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 3563 if (!entry) 3564 return ERR_PTR(-ENOMEM); 3565 3566 dev = to_mdev(c->ibucontext.device); 3567 err = mlx5_cmd_uar_alloc(dev->mdev, &uar_index, c->devx_uid); 3568 if (err) 3569 goto end; 3570 3571 entry->page_idx = uar_index; 3572 entry->address = uar_index2paddress(dev, uar_index); 3573 if (alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF) 3574 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_WC; 3575 else 3576 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_NC; 3577 3578 err = mlx5_rdma_user_mmap_entry_insert(c, entry, PAGE_SIZE); 3579 if (err) 3580 goto err_insert; 3581 3582 return entry; 3583 3584 err_insert: 3585 mlx5_cmd_uar_dealloc(dev->mdev, uar_index, c->devx_uid); 3586 end: 3587 kfree(entry); 3588 return ERR_PTR(err); 3589 } 3590 3591 static int UVERBS_HANDLER(MLX5_IB_METHOD_UAR_OBJ_ALLOC)( 3592 struct uverbs_attr_bundle *attrs) 3593 { 3594 struct ib_uobject *uobj = uverbs_attr_get_uobject( 3595 attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE); 3596 enum mlx5_ib_uapi_uar_alloc_type alloc_type; 3597 struct mlx5_ib_ucontext *c; 3598 struct mlx5_user_mmap_entry *entry; 3599 u64 mmap_offset; 3600 u32 length; 3601 int err; 3602 3603 c = to_mucontext(ib_uverbs_get_ucontext(attrs)); 3604 if (IS_ERR(c)) 3605 return PTR_ERR(c); 3606 3607 err = uverbs_get_const(&alloc_type, attrs, 3608 MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE); 3609 if (err) 3610 return err; 3611 3612 if (alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF && 3613 alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_NC) 3614 return -EOPNOTSUPP; 3615 3616 if (!to_mdev(c->ibucontext.device)->wc_support && 3617 alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF) 3618 return -EOPNOTSUPP; 3619 3620 entry = alloc_uar_entry(c, alloc_type); 3621 if (IS_ERR(entry)) 3622 return PTR_ERR(entry); 3623 3624 mmap_offset = mlx5_entry_to_mmap_offset(entry); 3625 length = entry->rdma_entry.npages * PAGE_SIZE; 3626 uobj->object = entry; 3627 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE); 3628 3629 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET, 3630 &mmap_offset, sizeof(mmap_offset)); 3631 if (err) 3632 return err; 3633 3634 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID, 3635 &entry->page_idx, sizeof(entry->page_idx)); 3636 if (err) 3637 return err; 3638 3639 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH, 3640 &length, sizeof(length)); 3641 return err; 3642 } 3643 3644 DECLARE_UVERBS_NAMED_METHOD( 3645 MLX5_IB_METHOD_UAR_OBJ_ALLOC, 3646 UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE, 3647 MLX5_IB_OBJECT_UAR, 3648 UVERBS_ACCESS_NEW, 3649 UA_MANDATORY), 3650 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE, 3651 enum mlx5_ib_uapi_uar_alloc_type, 3652 UA_MANDATORY), 3653 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID, 3654 UVERBS_ATTR_TYPE(u32), 3655 UA_MANDATORY), 3656 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH, 3657 UVERBS_ATTR_TYPE(u32), 3658 UA_MANDATORY), 3659 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET, 3660 UVERBS_ATTR_TYPE(u64), 3661 UA_MANDATORY)); 3662 3663 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 3664 MLX5_IB_METHOD_UAR_OBJ_DESTROY, 3665 UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_DESTROY_HANDLE, 3666 MLX5_IB_OBJECT_UAR, 3667 UVERBS_ACCESS_DESTROY, 3668 UA_MANDATORY)); 3669 3670 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_UAR, 3671 UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup), 3672 &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_ALLOC), 3673 &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_DESTROY)); 3674 3675 ADD_UVERBS_ATTRIBUTES_SIMPLE( 3676 mlx5_ib_query_context, 3677 UVERBS_OBJECT_DEVICE, 3678 UVERBS_METHOD_QUERY_CONTEXT, 3679 UVERBS_ATTR_PTR_OUT( 3680 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX, 3681 UVERBS_ATTR_STRUCT(struct mlx5_ib_alloc_ucontext_resp, 3682 dump_fill_mkey), 3683 UA_MANDATORY)); 3684 3685 static const struct uapi_definition mlx5_ib_defs[] = { 3686 UAPI_DEF_CHAIN(mlx5_ib_devx_defs), 3687 UAPI_DEF_CHAIN(mlx5_ib_flow_defs), 3688 UAPI_DEF_CHAIN(mlx5_ib_qos_defs), 3689 UAPI_DEF_CHAIN(mlx5_ib_std_types_defs), 3690 UAPI_DEF_CHAIN(mlx5_ib_dm_defs), 3691 3692 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DEVICE, &mlx5_ib_query_context), 3693 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_VAR, 3694 UAPI_DEF_IS_OBJ_SUPPORTED(var_is_supported)), 3695 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_UAR), 3696 {} 3697 }; 3698 3699 static void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev) 3700 { 3701 mlx5_ib_cleanup_multiport_master(dev); 3702 WARN_ON(!xa_empty(&dev->odp_mkeys)); 3703 mutex_destroy(&dev->cap_mask_mutex); 3704 WARN_ON(!xa_empty(&dev->sig_mrs)); 3705 WARN_ON(!bitmap_empty(dev->dm.memic_alloc_pages, MLX5_MAX_MEMIC_PAGES)); 3706 mlx5r_macsec_dealloc_gids(dev); 3707 } 3708 3709 static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev) 3710 { 3711 struct mlx5_core_dev *mdev = dev->mdev; 3712 int err, i; 3713 3714 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 3715 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */; 3716 dev->ib_dev.phys_port_cnt = dev->num_ports; 3717 dev->ib_dev.dev.parent = mdev->device; 3718 dev->ib_dev.lag_flags = RDMA_LAG_FLAGS_HASH_ALL_SLAVES; 3719 3720 for (i = 0; i < dev->num_ports; i++) { 3721 spin_lock_init(&dev->port[i].mp.mpi_lock); 3722 rwlock_init(&dev->port[i].roce.netdev_lock); 3723 dev->port[i].roce.dev = dev; 3724 dev->port[i].roce.native_port_num = i + 1; 3725 dev->port[i].roce.last_port_state = IB_PORT_DOWN; 3726 } 3727 3728 err = mlx5r_cmd_query_special_mkeys(dev); 3729 if (err) 3730 return err; 3731 3732 err = mlx5r_macsec_init_gids_and_devlist(dev); 3733 if (err) 3734 return err; 3735 3736 err = mlx5_ib_init_multiport_master(dev); 3737 if (err) 3738 goto err; 3739 3740 err = set_has_smi_cap(dev); 3741 if (err) 3742 goto err_mp; 3743 3744 err = mlx5_query_max_pkeys(&dev->ib_dev, &dev->pkey_table_len); 3745 if (err) 3746 goto err_mp; 3747 3748 if (mlx5_use_mad_ifc(dev)) 3749 get_ext_port_caps(dev); 3750 3751 dev->ib_dev.num_comp_vectors = mlx5_comp_vectors_max(mdev); 3752 3753 mutex_init(&dev->cap_mask_mutex); 3754 INIT_LIST_HEAD(&dev->qp_list); 3755 spin_lock_init(&dev->reset_flow_resource_lock); 3756 xa_init(&dev->odp_mkeys); 3757 xa_init(&dev->sig_mrs); 3758 atomic_set(&dev->mkey_var, 0); 3759 3760 spin_lock_init(&dev->dm.lock); 3761 dev->dm.dev = mdev; 3762 return 0; 3763 err: 3764 mlx5r_macsec_dealloc_gids(dev); 3765 err_mp: 3766 mlx5_ib_cleanup_multiport_master(dev); 3767 return err; 3768 } 3769 3770 static int mlx5_ib_enable_driver(struct ib_device *dev) 3771 { 3772 struct mlx5_ib_dev *mdev = to_mdev(dev); 3773 int ret; 3774 3775 ret = mlx5_ib_test_wc(mdev); 3776 mlx5_ib_dbg(mdev, "Write-Combining %s", 3777 mdev->wc_support ? "supported" : "not supported"); 3778 3779 return ret; 3780 } 3781 3782 static const struct ib_device_ops mlx5_ib_dev_ops = { 3783 .owner = THIS_MODULE, 3784 .driver_id = RDMA_DRIVER_MLX5, 3785 .uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION, 3786 3787 .add_gid = mlx5_ib_add_gid, 3788 .alloc_mr = mlx5_ib_alloc_mr, 3789 .alloc_mr_integrity = mlx5_ib_alloc_mr_integrity, 3790 .alloc_pd = mlx5_ib_alloc_pd, 3791 .alloc_ucontext = mlx5_ib_alloc_ucontext, 3792 .attach_mcast = mlx5_ib_mcg_attach, 3793 .check_mr_status = mlx5_ib_check_mr_status, 3794 .create_ah = mlx5_ib_create_ah, 3795 .create_cq = mlx5_ib_create_cq, 3796 .create_qp = mlx5_ib_create_qp, 3797 .create_srq = mlx5_ib_create_srq, 3798 .create_user_ah = mlx5_ib_create_ah, 3799 .dealloc_pd = mlx5_ib_dealloc_pd, 3800 .dealloc_ucontext = mlx5_ib_dealloc_ucontext, 3801 .del_gid = mlx5_ib_del_gid, 3802 .dereg_mr = mlx5_ib_dereg_mr, 3803 .destroy_ah = mlx5_ib_destroy_ah, 3804 .destroy_cq = mlx5_ib_destroy_cq, 3805 .destroy_qp = mlx5_ib_destroy_qp, 3806 .destroy_srq = mlx5_ib_destroy_srq, 3807 .detach_mcast = mlx5_ib_mcg_detach, 3808 .disassociate_ucontext = mlx5_ib_disassociate_ucontext, 3809 .drain_rq = mlx5_ib_drain_rq, 3810 .drain_sq = mlx5_ib_drain_sq, 3811 .device_group = &mlx5_attr_group, 3812 .enable_driver = mlx5_ib_enable_driver, 3813 .get_dev_fw_str = get_dev_fw_str, 3814 .get_dma_mr = mlx5_ib_get_dma_mr, 3815 .get_link_layer = mlx5_ib_port_link_layer, 3816 .map_mr_sg = mlx5_ib_map_mr_sg, 3817 .map_mr_sg_pi = mlx5_ib_map_mr_sg_pi, 3818 .mmap = mlx5_ib_mmap, 3819 .mmap_free = mlx5_ib_mmap_free, 3820 .modify_cq = mlx5_ib_modify_cq, 3821 .modify_device = mlx5_ib_modify_device, 3822 .modify_port = mlx5_ib_modify_port, 3823 .modify_qp = mlx5_ib_modify_qp, 3824 .modify_srq = mlx5_ib_modify_srq, 3825 .poll_cq = mlx5_ib_poll_cq, 3826 .post_recv = mlx5_ib_post_recv_nodrain, 3827 .post_send = mlx5_ib_post_send_nodrain, 3828 .post_srq_recv = mlx5_ib_post_srq_recv, 3829 .process_mad = mlx5_ib_process_mad, 3830 .query_ah = mlx5_ib_query_ah, 3831 .query_device = mlx5_ib_query_device, 3832 .query_gid = mlx5_ib_query_gid, 3833 .query_pkey = mlx5_ib_query_pkey, 3834 .query_qp = mlx5_ib_query_qp, 3835 .query_srq = mlx5_ib_query_srq, 3836 .query_ucontext = mlx5_ib_query_ucontext, 3837 .reg_user_mr = mlx5_ib_reg_user_mr, 3838 .reg_user_mr_dmabuf = mlx5_ib_reg_user_mr_dmabuf, 3839 .req_notify_cq = mlx5_ib_arm_cq, 3840 .rereg_user_mr = mlx5_ib_rereg_user_mr, 3841 .resize_cq = mlx5_ib_resize_cq, 3842 3843 INIT_RDMA_OBJ_SIZE(ib_ah, mlx5_ib_ah, ibah), 3844 INIT_RDMA_OBJ_SIZE(ib_counters, mlx5_ib_mcounters, ibcntrs), 3845 INIT_RDMA_OBJ_SIZE(ib_cq, mlx5_ib_cq, ibcq), 3846 INIT_RDMA_OBJ_SIZE(ib_pd, mlx5_ib_pd, ibpd), 3847 INIT_RDMA_OBJ_SIZE(ib_qp, mlx5_ib_qp, ibqp), 3848 INIT_RDMA_OBJ_SIZE(ib_srq, mlx5_ib_srq, ibsrq), 3849 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx5_ib_ucontext, ibucontext), 3850 }; 3851 3852 static const struct ib_device_ops mlx5_ib_dev_ipoib_enhanced_ops = { 3853 .rdma_netdev_get_params = mlx5_ib_rn_get_params, 3854 }; 3855 3856 static const struct ib_device_ops mlx5_ib_dev_sriov_ops = { 3857 .get_vf_config = mlx5_ib_get_vf_config, 3858 .get_vf_guid = mlx5_ib_get_vf_guid, 3859 .get_vf_stats = mlx5_ib_get_vf_stats, 3860 .set_vf_guid = mlx5_ib_set_vf_guid, 3861 .set_vf_link_state = mlx5_ib_set_vf_link_state, 3862 }; 3863 3864 static const struct ib_device_ops mlx5_ib_dev_mw_ops = { 3865 .alloc_mw = mlx5_ib_alloc_mw, 3866 .dealloc_mw = mlx5_ib_dealloc_mw, 3867 3868 INIT_RDMA_OBJ_SIZE(ib_mw, mlx5_ib_mw, ibmw), 3869 }; 3870 3871 static const struct ib_device_ops mlx5_ib_dev_xrc_ops = { 3872 .alloc_xrcd = mlx5_ib_alloc_xrcd, 3873 .dealloc_xrcd = mlx5_ib_dealloc_xrcd, 3874 3875 INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx5_ib_xrcd, ibxrcd), 3876 }; 3877 3878 static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev) 3879 { 3880 struct mlx5_core_dev *mdev = dev->mdev; 3881 struct mlx5_var_table *var_table = &dev->var_table; 3882 u8 log_doorbell_bar_size; 3883 u8 log_doorbell_stride; 3884 u64 bar_size; 3885 3886 log_doorbell_bar_size = MLX5_CAP_DEV_VDPA_EMULATION(mdev, 3887 log_doorbell_bar_size); 3888 log_doorbell_stride = MLX5_CAP_DEV_VDPA_EMULATION(mdev, 3889 log_doorbell_stride); 3890 var_table->hw_start_addr = dev->mdev->bar_addr + 3891 MLX5_CAP64_DEV_VDPA_EMULATION(mdev, 3892 doorbell_bar_offset); 3893 bar_size = (1ULL << log_doorbell_bar_size) * 4096; 3894 var_table->stride_size = 1ULL << log_doorbell_stride; 3895 var_table->num_var_hw_entries = div_u64(bar_size, 3896 var_table->stride_size); 3897 mutex_init(&var_table->bitmap_lock); 3898 var_table->bitmap = bitmap_zalloc(var_table->num_var_hw_entries, 3899 GFP_KERNEL); 3900 return (var_table->bitmap) ? 0 : -ENOMEM; 3901 } 3902 3903 static void mlx5_ib_stage_caps_cleanup(struct mlx5_ib_dev *dev) 3904 { 3905 bitmap_free(dev->var_table.bitmap); 3906 } 3907 3908 static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) 3909 { 3910 struct mlx5_core_dev *mdev = dev->mdev; 3911 int err; 3912 3913 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) && 3914 IS_ENABLED(CONFIG_MLX5_CORE_IPOIB)) 3915 ib_set_device_ops(&dev->ib_dev, 3916 &mlx5_ib_dev_ipoib_enhanced_ops); 3917 3918 if (mlx5_core_is_pf(mdev)) 3919 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_sriov_ops); 3920 3921 dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence)); 3922 3923 if (MLX5_CAP_GEN(mdev, imaicl)) 3924 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_mw_ops); 3925 3926 if (MLX5_CAP_GEN(mdev, xrc)) 3927 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_xrc_ops); 3928 3929 if (MLX5_CAP_DEV_MEM(mdev, memic) || 3930 MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 3931 MLX5_GENERAL_OBJ_TYPES_CAP_SW_ICM) 3932 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_dm_ops); 3933 3934 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_ops); 3935 3936 if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)) 3937 dev->ib_dev.driver_def = mlx5_ib_defs; 3938 3939 err = init_node_data(dev); 3940 if (err) 3941 return err; 3942 3943 if ((MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) && 3944 (MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) || 3945 MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 3946 mutex_init(&dev->lb.mutex); 3947 3948 if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 3949 MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) { 3950 err = mlx5_ib_init_var_table(dev); 3951 if (err) 3952 return err; 3953 } 3954 3955 dev->ib_dev.use_cq_dim = true; 3956 3957 return 0; 3958 } 3959 3960 static const struct ib_device_ops mlx5_ib_dev_port_ops = { 3961 .get_port_immutable = mlx5_port_immutable, 3962 .query_port = mlx5_ib_query_port, 3963 }; 3964 3965 static int mlx5_ib_stage_non_default_cb(struct mlx5_ib_dev *dev) 3966 { 3967 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_ops); 3968 return 0; 3969 } 3970 3971 static const struct ib_device_ops mlx5_ib_dev_port_rep_ops = { 3972 .get_port_immutable = mlx5_port_rep_immutable, 3973 .query_port = mlx5_ib_rep_query_port, 3974 .query_pkey = mlx5_ib_rep_query_pkey, 3975 }; 3976 3977 static int mlx5_ib_stage_raw_eth_non_default_cb(struct mlx5_ib_dev *dev) 3978 { 3979 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_rep_ops); 3980 return 0; 3981 } 3982 3983 static const struct ib_device_ops mlx5_ib_dev_common_roce_ops = { 3984 .create_rwq_ind_table = mlx5_ib_create_rwq_ind_table, 3985 .create_wq = mlx5_ib_create_wq, 3986 .destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table, 3987 .destroy_wq = mlx5_ib_destroy_wq, 3988 .get_netdev = mlx5_ib_get_netdev, 3989 .modify_wq = mlx5_ib_modify_wq, 3990 3991 INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx5_ib_rwq_ind_table, 3992 ib_rwq_ind_tbl), 3993 }; 3994 3995 static int mlx5_ib_roce_init(struct mlx5_ib_dev *dev) 3996 { 3997 struct mlx5_core_dev *mdev = dev->mdev; 3998 enum rdma_link_layer ll; 3999 int port_type_cap; 4000 u32 port_num = 0; 4001 int err; 4002 4003 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 4004 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 4005 4006 if (ll == IB_LINK_LAYER_ETHERNET) { 4007 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_common_roce_ops); 4008 4009 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 4010 4011 /* Register only for native ports */ 4012 mlx5_mdev_netdev_track(dev, port_num); 4013 4014 err = mlx5_enable_eth(dev); 4015 if (err) 4016 goto cleanup; 4017 } 4018 4019 return 0; 4020 cleanup: 4021 mlx5_mdev_netdev_untrack(dev, port_num); 4022 return err; 4023 } 4024 4025 static void mlx5_ib_roce_cleanup(struct mlx5_ib_dev *dev) 4026 { 4027 struct mlx5_core_dev *mdev = dev->mdev; 4028 enum rdma_link_layer ll; 4029 int port_type_cap; 4030 u32 port_num; 4031 4032 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 4033 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 4034 4035 if (ll == IB_LINK_LAYER_ETHERNET) { 4036 mlx5_disable_eth(dev); 4037 4038 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 4039 mlx5_mdev_netdev_untrack(dev, port_num); 4040 } 4041 } 4042 4043 static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev) 4044 { 4045 mlx5_ib_init_cong_debugfs(dev, 4046 mlx5_core_native_port_num(dev->mdev) - 1); 4047 return 0; 4048 } 4049 4050 static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev) 4051 { 4052 mlx5_ib_cleanup_cong_debugfs(dev, 4053 mlx5_core_native_port_num(dev->mdev) - 1); 4054 } 4055 4056 static int mlx5_ib_stage_uar_init(struct mlx5_ib_dev *dev) 4057 { 4058 dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev); 4059 return PTR_ERR_OR_ZERO(dev->mdev->priv.uar); 4060 } 4061 4062 static void mlx5_ib_stage_uar_cleanup(struct mlx5_ib_dev *dev) 4063 { 4064 mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar); 4065 } 4066 4067 static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev) 4068 { 4069 int err; 4070 4071 err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false); 4072 if (err) 4073 return err; 4074 4075 err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true); 4076 if (err) 4077 mlx5_free_bfreg(dev->mdev, &dev->bfreg); 4078 4079 return err; 4080 } 4081 4082 static void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev) 4083 { 4084 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); 4085 mlx5_free_bfreg(dev->mdev, &dev->bfreg); 4086 } 4087 4088 static int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev) 4089 { 4090 const char *name; 4091 4092 if (!mlx5_lag_is_active(dev->mdev)) 4093 name = "mlx5_%d"; 4094 else 4095 name = "mlx5_bond_%d"; 4096 return ib_register_device(&dev->ib_dev, name, &dev->mdev->pdev->dev); 4097 } 4098 4099 static void mlx5_ib_stage_pre_ib_reg_umr_cleanup(struct mlx5_ib_dev *dev) 4100 { 4101 mlx5_mkey_cache_cleanup(dev); 4102 mlx5r_umr_resource_cleanup(dev); 4103 } 4104 4105 static void mlx5_ib_stage_ib_reg_cleanup(struct mlx5_ib_dev *dev) 4106 { 4107 ib_unregister_device(&dev->ib_dev); 4108 } 4109 4110 static int mlx5_ib_stage_post_ib_reg_umr_init(struct mlx5_ib_dev *dev) 4111 { 4112 int ret; 4113 4114 ret = mlx5r_umr_resource_init(dev); 4115 if (ret) 4116 return ret; 4117 4118 ret = mlx5_mkey_cache_init(dev); 4119 if (ret) 4120 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 4121 return ret; 4122 } 4123 4124 static int mlx5_ib_stage_delay_drop_init(struct mlx5_ib_dev *dev) 4125 { 4126 struct dentry *root; 4127 4128 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP)) 4129 return 0; 4130 4131 mutex_init(&dev->delay_drop.lock); 4132 dev->delay_drop.dev = dev; 4133 dev->delay_drop.activate = false; 4134 dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000; 4135 INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler); 4136 atomic_set(&dev->delay_drop.rqs_cnt, 0); 4137 atomic_set(&dev->delay_drop.events_cnt, 0); 4138 4139 if (!mlx5_debugfs_root) 4140 return 0; 4141 4142 root = debugfs_create_dir("delay_drop", mlx5_debugfs_get_dev_root(dev->mdev)); 4143 dev->delay_drop.dir_debugfs = root; 4144 4145 debugfs_create_atomic_t("num_timeout_events", 0400, root, 4146 &dev->delay_drop.events_cnt); 4147 debugfs_create_atomic_t("num_rqs", 0400, root, 4148 &dev->delay_drop.rqs_cnt); 4149 debugfs_create_file("timeout", 0600, root, &dev->delay_drop, 4150 &fops_delay_drop_timeout); 4151 return 0; 4152 } 4153 4154 static void mlx5_ib_stage_delay_drop_cleanup(struct mlx5_ib_dev *dev) 4155 { 4156 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP)) 4157 return; 4158 4159 cancel_work_sync(&dev->delay_drop.delay_drop_work); 4160 if (!dev->delay_drop.dir_debugfs) 4161 return; 4162 4163 debugfs_remove_recursive(dev->delay_drop.dir_debugfs); 4164 dev->delay_drop.dir_debugfs = NULL; 4165 } 4166 4167 static int mlx5_ib_stage_dev_notifier_init(struct mlx5_ib_dev *dev) 4168 { 4169 dev->mdev_events.notifier_call = mlx5_ib_event; 4170 mlx5_notifier_register(dev->mdev, &dev->mdev_events); 4171 4172 mlx5r_macsec_event_register(dev); 4173 4174 return 0; 4175 } 4176 4177 static void mlx5_ib_stage_dev_notifier_cleanup(struct mlx5_ib_dev *dev) 4178 { 4179 mlx5r_macsec_event_unregister(dev); 4180 mlx5_notifier_unregister(dev->mdev, &dev->mdev_events); 4181 } 4182 4183 void __mlx5_ib_remove(struct mlx5_ib_dev *dev, 4184 const struct mlx5_ib_profile *profile, 4185 int stage) 4186 { 4187 dev->ib_active = false; 4188 4189 /* Number of stages to cleanup */ 4190 while (stage) { 4191 stage--; 4192 if (profile->stage[stage].cleanup) 4193 profile->stage[stage].cleanup(dev); 4194 } 4195 4196 kfree(dev->port); 4197 ib_dealloc_device(&dev->ib_dev); 4198 } 4199 4200 int __mlx5_ib_add(struct mlx5_ib_dev *dev, 4201 const struct mlx5_ib_profile *profile) 4202 { 4203 int err; 4204 int i; 4205 4206 dev->profile = profile; 4207 4208 for (i = 0; i < MLX5_IB_STAGE_MAX; i++) { 4209 if (profile->stage[i].init) { 4210 err = profile->stage[i].init(dev); 4211 if (err) 4212 goto err_out; 4213 } 4214 } 4215 4216 dev->ib_active = true; 4217 return 0; 4218 4219 err_out: 4220 /* Clean up stages which were initialized */ 4221 while (i) { 4222 i--; 4223 if (profile->stage[i].cleanup) 4224 profile->stage[i].cleanup(dev); 4225 } 4226 return -ENOMEM; 4227 } 4228 4229 static const struct mlx5_ib_profile pf_profile = { 4230 STAGE_CREATE(MLX5_IB_STAGE_INIT, 4231 mlx5_ib_stage_init_init, 4232 mlx5_ib_stage_init_cleanup), 4233 STAGE_CREATE(MLX5_IB_STAGE_FS, 4234 mlx5_ib_fs_init, 4235 mlx5_ib_fs_cleanup), 4236 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 4237 mlx5_ib_stage_caps_init, 4238 mlx5_ib_stage_caps_cleanup), 4239 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 4240 mlx5_ib_stage_non_default_cb, 4241 NULL), 4242 STAGE_CREATE(MLX5_IB_STAGE_ROCE, 4243 mlx5_ib_roce_init, 4244 mlx5_ib_roce_cleanup), 4245 STAGE_CREATE(MLX5_IB_STAGE_QP, 4246 mlx5_init_qp_table, 4247 mlx5_cleanup_qp_table), 4248 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 4249 mlx5_init_srq_table, 4250 mlx5_cleanup_srq_table), 4251 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 4252 mlx5_ib_dev_res_init, 4253 mlx5_ib_dev_res_cleanup), 4254 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER, 4255 mlx5_ib_stage_dev_notifier_init, 4256 mlx5_ib_stage_dev_notifier_cleanup), 4257 STAGE_CREATE(MLX5_IB_STAGE_ODP, 4258 mlx5_ib_odp_init_one, 4259 mlx5_ib_odp_cleanup_one), 4260 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS, 4261 mlx5_ib_counters_init, 4262 mlx5_ib_counters_cleanup), 4263 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS, 4264 mlx5_ib_stage_cong_debugfs_init, 4265 mlx5_ib_stage_cong_debugfs_cleanup), 4266 STAGE_CREATE(MLX5_IB_STAGE_UAR, 4267 mlx5_ib_stage_uar_init, 4268 mlx5_ib_stage_uar_cleanup), 4269 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 4270 mlx5_ib_stage_bfrag_init, 4271 mlx5_ib_stage_bfrag_cleanup), 4272 STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR, 4273 NULL, 4274 mlx5_ib_stage_pre_ib_reg_umr_cleanup), 4275 STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID, 4276 mlx5_ib_devx_init, 4277 mlx5_ib_devx_cleanup), 4278 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 4279 mlx5_ib_stage_ib_reg_init, 4280 mlx5_ib_stage_ib_reg_cleanup), 4281 STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR, 4282 mlx5_ib_stage_post_ib_reg_umr_init, 4283 NULL), 4284 STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP, 4285 mlx5_ib_stage_delay_drop_init, 4286 mlx5_ib_stage_delay_drop_cleanup), 4287 STAGE_CREATE(MLX5_IB_STAGE_RESTRACK, 4288 mlx5_ib_restrack_init, 4289 NULL), 4290 }; 4291 4292 const struct mlx5_ib_profile raw_eth_profile = { 4293 STAGE_CREATE(MLX5_IB_STAGE_INIT, 4294 mlx5_ib_stage_init_init, 4295 mlx5_ib_stage_init_cleanup), 4296 STAGE_CREATE(MLX5_IB_STAGE_FS, 4297 mlx5_ib_fs_init, 4298 mlx5_ib_fs_cleanup), 4299 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 4300 mlx5_ib_stage_caps_init, 4301 mlx5_ib_stage_caps_cleanup), 4302 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 4303 mlx5_ib_stage_raw_eth_non_default_cb, 4304 NULL), 4305 STAGE_CREATE(MLX5_IB_STAGE_ROCE, 4306 mlx5_ib_roce_init, 4307 mlx5_ib_roce_cleanup), 4308 STAGE_CREATE(MLX5_IB_STAGE_QP, 4309 mlx5_init_qp_table, 4310 mlx5_cleanup_qp_table), 4311 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 4312 mlx5_init_srq_table, 4313 mlx5_cleanup_srq_table), 4314 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 4315 mlx5_ib_dev_res_init, 4316 mlx5_ib_dev_res_cleanup), 4317 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER, 4318 mlx5_ib_stage_dev_notifier_init, 4319 mlx5_ib_stage_dev_notifier_cleanup), 4320 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS, 4321 mlx5_ib_counters_init, 4322 mlx5_ib_counters_cleanup), 4323 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS, 4324 mlx5_ib_stage_cong_debugfs_init, 4325 mlx5_ib_stage_cong_debugfs_cleanup), 4326 STAGE_CREATE(MLX5_IB_STAGE_UAR, 4327 mlx5_ib_stage_uar_init, 4328 mlx5_ib_stage_uar_cleanup), 4329 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 4330 mlx5_ib_stage_bfrag_init, 4331 mlx5_ib_stage_bfrag_cleanup), 4332 STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR, 4333 NULL, 4334 mlx5_ib_stage_pre_ib_reg_umr_cleanup), 4335 STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID, 4336 mlx5_ib_devx_init, 4337 mlx5_ib_devx_cleanup), 4338 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 4339 mlx5_ib_stage_ib_reg_init, 4340 mlx5_ib_stage_ib_reg_cleanup), 4341 STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR, 4342 mlx5_ib_stage_post_ib_reg_umr_init, 4343 NULL), 4344 STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP, 4345 mlx5_ib_stage_delay_drop_init, 4346 mlx5_ib_stage_delay_drop_cleanup), 4347 STAGE_CREATE(MLX5_IB_STAGE_RESTRACK, 4348 mlx5_ib_restrack_init, 4349 NULL), 4350 }; 4351 4352 static int mlx5r_mp_probe(struct auxiliary_device *adev, 4353 const struct auxiliary_device_id *id) 4354 { 4355 struct mlx5_adev *idev = container_of(adev, struct mlx5_adev, adev); 4356 struct mlx5_core_dev *mdev = idev->mdev; 4357 struct mlx5_ib_multiport_info *mpi; 4358 struct mlx5_ib_dev *dev; 4359 bool bound = false; 4360 int err; 4361 4362 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL); 4363 if (!mpi) 4364 return -ENOMEM; 4365 4366 mpi->mdev = mdev; 4367 err = mlx5_query_nic_vport_system_image_guid(mdev, 4368 &mpi->sys_image_guid); 4369 if (err) { 4370 kfree(mpi); 4371 return err; 4372 } 4373 4374 mutex_lock(&mlx5_ib_multiport_mutex); 4375 list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) { 4376 if (dev->sys_image_guid == mpi->sys_image_guid) 4377 bound = mlx5_ib_bind_slave_port(dev, mpi); 4378 4379 if (bound) { 4380 rdma_roce_rescan_device(&dev->ib_dev); 4381 mpi->ibdev->ib_active = true; 4382 break; 4383 } 4384 } 4385 4386 if (!bound) { 4387 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list); 4388 dev_dbg(mdev->device, 4389 "no suitable IB device found to bind to, added to unaffiliated list.\n"); 4390 } 4391 mutex_unlock(&mlx5_ib_multiport_mutex); 4392 4393 auxiliary_set_drvdata(adev, mpi); 4394 return 0; 4395 } 4396 4397 static void mlx5r_mp_remove(struct auxiliary_device *adev) 4398 { 4399 struct mlx5_ib_multiport_info *mpi; 4400 4401 mpi = auxiliary_get_drvdata(adev); 4402 mutex_lock(&mlx5_ib_multiport_mutex); 4403 if (mpi->ibdev) 4404 mlx5_ib_unbind_slave_port(mpi->ibdev, mpi); 4405 else 4406 list_del(&mpi->list); 4407 mutex_unlock(&mlx5_ib_multiport_mutex); 4408 kfree(mpi); 4409 } 4410 4411 static int mlx5r_probe(struct auxiliary_device *adev, 4412 const struct auxiliary_device_id *id) 4413 { 4414 struct mlx5_adev *idev = container_of(adev, struct mlx5_adev, adev); 4415 struct mlx5_core_dev *mdev = idev->mdev; 4416 const struct mlx5_ib_profile *profile; 4417 int port_type_cap, num_ports, ret; 4418 enum rdma_link_layer ll; 4419 struct mlx5_ib_dev *dev; 4420 4421 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 4422 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 4423 4424 num_ports = max(MLX5_CAP_GEN(mdev, num_ports), 4425 MLX5_CAP_GEN(mdev, num_vhca_ports)); 4426 dev = ib_alloc_device(mlx5_ib_dev, ib_dev); 4427 if (!dev) 4428 return -ENOMEM; 4429 dev->port = kcalloc(num_ports, sizeof(*dev->port), 4430 GFP_KERNEL); 4431 if (!dev->port) { 4432 ib_dealloc_device(&dev->ib_dev); 4433 return -ENOMEM; 4434 } 4435 4436 dev->mdev = mdev; 4437 dev->num_ports = num_ports; 4438 4439 if (ll == IB_LINK_LAYER_ETHERNET && !mlx5_get_roce_state(mdev)) 4440 profile = &raw_eth_profile; 4441 else 4442 profile = &pf_profile; 4443 4444 ret = __mlx5_ib_add(dev, profile); 4445 if (ret) { 4446 kfree(dev->port); 4447 ib_dealloc_device(&dev->ib_dev); 4448 return ret; 4449 } 4450 4451 auxiliary_set_drvdata(adev, dev); 4452 return 0; 4453 } 4454 4455 static void mlx5r_remove(struct auxiliary_device *adev) 4456 { 4457 struct mlx5_ib_dev *dev; 4458 4459 dev = auxiliary_get_drvdata(adev); 4460 __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX); 4461 } 4462 4463 static const struct auxiliary_device_id mlx5r_mp_id_table[] = { 4464 { .name = MLX5_ADEV_NAME ".multiport", }, 4465 {}, 4466 }; 4467 4468 static const struct auxiliary_device_id mlx5r_id_table[] = { 4469 { .name = MLX5_ADEV_NAME ".rdma", }, 4470 {}, 4471 }; 4472 4473 MODULE_DEVICE_TABLE(auxiliary, mlx5r_mp_id_table); 4474 MODULE_DEVICE_TABLE(auxiliary, mlx5r_id_table); 4475 4476 static struct auxiliary_driver mlx5r_mp_driver = { 4477 .name = "multiport", 4478 .probe = mlx5r_mp_probe, 4479 .remove = mlx5r_mp_remove, 4480 .id_table = mlx5r_mp_id_table, 4481 }; 4482 4483 static struct auxiliary_driver mlx5r_driver = { 4484 .name = "rdma", 4485 .probe = mlx5r_probe, 4486 .remove = mlx5r_remove, 4487 .id_table = mlx5r_id_table, 4488 }; 4489 4490 static int __init mlx5_ib_init(void) 4491 { 4492 int ret; 4493 4494 xlt_emergency_page = (void *)__get_free_page(GFP_KERNEL); 4495 if (!xlt_emergency_page) 4496 return -ENOMEM; 4497 4498 mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0); 4499 if (!mlx5_ib_event_wq) { 4500 free_page((unsigned long)xlt_emergency_page); 4501 return -ENOMEM; 4502 } 4503 4504 ret = mlx5_ib_qp_event_init(); 4505 if (ret) 4506 goto qp_event_err; 4507 4508 mlx5_ib_odp_init(); 4509 ret = mlx5r_rep_init(); 4510 if (ret) 4511 goto rep_err; 4512 ret = auxiliary_driver_register(&mlx5r_mp_driver); 4513 if (ret) 4514 goto mp_err; 4515 ret = auxiliary_driver_register(&mlx5r_driver); 4516 if (ret) 4517 goto drv_err; 4518 return 0; 4519 4520 drv_err: 4521 auxiliary_driver_unregister(&mlx5r_mp_driver); 4522 mp_err: 4523 mlx5r_rep_cleanup(); 4524 rep_err: 4525 mlx5_ib_qp_event_cleanup(); 4526 qp_event_err: 4527 destroy_workqueue(mlx5_ib_event_wq); 4528 free_page((unsigned long)xlt_emergency_page); 4529 return ret; 4530 } 4531 4532 static void __exit mlx5_ib_cleanup(void) 4533 { 4534 auxiliary_driver_unregister(&mlx5r_driver); 4535 auxiliary_driver_unregister(&mlx5r_mp_driver); 4536 mlx5r_rep_cleanup(); 4537 4538 mlx5_ib_qp_event_cleanup(); 4539 destroy_workqueue(mlx5_ib_event_wq); 4540 free_page((unsigned long)xlt_emergency_page); 4541 } 4542 4543 module_init(mlx5_ib_init); 4544 module_exit(mlx5_ib_cleanup); 4545