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 #include "data_direct.h" 52 53 #define UVERBS_MODULE_NAME mlx5_ib 54 #include <rdma/uverbs_named_ioctl.h> 55 56 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>"); 57 MODULE_DESCRIPTION("Mellanox 5th generation network adapters (ConnectX series) IB driver"); 58 MODULE_LICENSE("Dual BSD/GPL"); 59 60 struct mlx5_ib_event_work { 61 struct work_struct work; 62 union { 63 struct mlx5_ib_dev *dev; 64 struct mlx5_ib_multiport_info *mpi; 65 }; 66 bool is_slave; 67 unsigned int event; 68 void *param; 69 }; 70 71 enum { 72 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3, 73 }; 74 75 static struct workqueue_struct *mlx5_ib_event_wq; 76 static LIST_HEAD(mlx5_ib_unaffiliated_port_list); 77 static LIST_HEAD(mlx5_ib_dev_list); 78 /* 79 * This mutex should be held when accessing either of the above lists 80 */ 81 static DEFINE_MUTEX(mlx5_ib_multiport_mutex); 82 83 struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi) 84 { 85 struct mlx5_ib_dev *dev; 86 87 mutex_lock(&mlx5_ib_multiport_mutex); 88 dev = mpi->ibdev; 89 mutex_unlock(&mlx5_ib_multiport_mutex); 90 return dev; 91 } 92 93 static enum rdma_link_layer 94 mlx5_port_type_cap_to_rdma_ll(int port_type_cap) 95 { 96 switch (port_type_cap) { 97 case MLX5_CAP_PORT_TYPE_IB: 98 return IB_LINK_LAYER_INFINIBAND; 99 case MLX5_CAP_PORT_TYPE_ETH: 100 return IB_LINK_LAYER_ETHERNET; 101 default: 102 return IB_LINK_LAYER_UNSPECIFIED; 103 } 104 } 105 106 static enum rdma_link_layer 107 mlx5_ib_port_link_layer(struct ib_device *device, u32 port_num) 108 { 109 struct mlx5_ib_dev *dev = to_mdev(device); 110 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type); 111 112 return mlx5_port_type_cap_to_rdma_ll(port_type_cap); 113 } 114 115 static int get_port_state(struct ib_device *ibdev, 116 u32 port_num, 117 enum ib_port_state *state) 118 { 119 struct ib_port_attr attr; 120 int ret; 121 122 memset(&attr, 0, sizeof(attr)); 123 ret = ibdev->ops.query_port(ibdev, port_num, &attr); 124 if (!ret) 125 *state = attr.state; 126 return ret; 127 } 128 129 static struct mlx5_roce *mlx5_get_rep_roce(struct mlx5_ib_dev *dev, 130 struct net_device *ndev, 131 struct net_device *upper, 132 u32 *port_num) 133 { 134 struct net_device *rep_ndev; 135 struct mlx5_ib_port *port; 136 int i; 137 138 for (i = 0; i < dev->num_ports; i++) { 139 port = &dev->port[i]; 140 if (!port->rep) 141 continue; 142 143 if (upper == ndev && port->rep->vport == MLX5_VPORT_UPLINK) { 144 *port_num = i + 1; 145 return &port->roce; 146 } 147 148 if (upper && port->rep->vport == MLX5_VPORT_UPLINK) 149 continue; 150 rep_ndev = ib_device_get_netdev(&dev->ib_dev, i + 1); 151 if (rep_ndev && rep_ndev == ndev) { 152 dev_put(rep_ndev); 153 *port_num = i + 1; 154 return &port->roce; 155 } 156 157 dev_put(rep_ndev); 158 } 159 160 return NULL; 161 } 162 163 static bool mlx5_netdev_send_event(struct mlx5_ib_dev *dev, 164 struct net_device *ndev, 165 struct net_device *upper, 166 struct net_device *ib_ndev) 167 { 168 if (!dev->ib_active) 169 return false; 170 171 /* Event is about our upper device */ 172 if (upper == ndev) 173 return true; 174 175 /* RDMA device is not in lag and not in switchdev */ 176 if (!dev->is_rep && !upper && ndev == ib_ndev) 177 return true; 178 179 /* RDMA devie is in switchdev */ 180 if (dev->is_rep && ndev == ib_ndev) 181 return true; 182 183 return false; 184 } 185 186 static struct net_device *mlx5_ib_get_rep_uplink_netdev(struct mlx5_ib_dev *ibdev) 187 { 188 struct mlx5_ib_port *port; 189 int i; 190 191 for (i = 0; i < ibdev->num_ports; i++) { 192 port = &ibdev->port[i]; 193 if (port->rep && port->rep->vport == MLX5_VPORT_UPLINK) { 194 return ib_device_get_netdev(&ibdev->ib_dev, i + 1); 195 } 196 } 197 198 return NULL; 199 } 200 201 static int mlx5_netdev_event(struct notifier_block *this, 202 unsigned long event, void *ptr) 203 { 204 struct mlx5_roce *roce = container_of(this, struct mlx5_roce, nb); 205 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 206 u32 port_num = roce->native_port_num; 207 struct net_device *ib_ndev = NULL; 208 struct mlx5_core_dev *mdev; 209 struct mlx5_ib_dev *ibdev; 210 211 ibdev = roce->dev; 212 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL); 213 if (!mdev) 214 return NOTIFY_DONE; 215 216 switch (event) { 217 case NETDEV_REGISTER: 218 /* Should already be registered during the load */ 219 if (ibdev->is_rep) 220 break; 221 222 ib_ndev = ib_device_get_netdev(&ibdev->ib_dev, port_num); 223 /* Exit if already registered */ 224 if (ib_ndev) 225 goto put_ndev; 226 227 if (ndev->dev.parent == mdev->device) 228 ib_device_set_netdev(&ibdev->ib_dev, ndev, port_num); 229 break; 230 231 case NETDEV_UNREGISTER: 232 /* In case of reps, ib device goes away before the netdevs */ 233 if (ibdev->is_rep) 234 break; 235 ib_ndev = ib_device_get_netdev(&ibdev->ib_dev, port_num); 236 if (ib_ndev == ndev) 237 ib_device_set_netdev(&ibdev->ib_dev, NULL, port_num); 238 goto put_ndev; 239 240 case NETDEV_CHANGE: 241 case NETDEV_UP: 242 case NETDEV_DOWN: { 243 struct net_device *upper = NULL; 244 245 if (mlx5_lag_is_roce(mdev) || mlx5_lag_is_sriov(mdev)) { 246 struct net_device *lag_ndev; 247 248 if(mlx5_lag_is_roce(mdev)) 249 lag_ndev = ib_device_get_netdev(&ibdev->ib_dev, 1); 250 else /* sriov lag */ 251 lag_ndev = mlx5_ib_get_rep_uplink_netdev(ibdev); 252 253 if (lag_ndev) { 254 upper = netdev_master_upper_dev_get(lag_ndev); 255 dev_put(lag_ndev); 256 } else { 257 goto done; 258 } 259 } 260 261 if (ibdev->is_rep) 262 roce = mlx5_get_rep_roce(ibdev, ndev, upper, &port_num); 263 if (!roce) 264 return NOTIFY_DONE; 265 266 ib_ndev = ib_device_get_netdev(&ibdev->ib_dev, port_num); 267 268 if (mlx5_netdev_send_event(ibdev, ndev, upper, ib_ndev)) { 269 struct ib_event ibev = { }; 270 enum ib_port_state port_state; 271 272 if (get_port_state(&ibdev->ib_dev, port_num, 273 &port_state)) 274 goto put_ndev; 275 276 if (roce->last_port_state == port_state) 277 goto put_ndev; 278 279 roce->last_port_state = port_state; 280 ibev.device = &ibdev->ib_dev; 281 if (port_state == IB_PORT_DOWN) 282 ibev.event = IB_EVENT_PORT_ERR; 283 else if (port_state == IB_PORT_ACTIVE) 284 ibev.event = IB_EVENT_PORT_ACTIVE; 285 else 286 goto put_ndev; 287 288 ibev.element.port_num = port_num; 289 ib_dispatch_event(&ibev); 290 } 291 break; 292 } 293 294 default: 295 break; 296 } 297 put_ndev: 298 dev_put(ib_ndev); 299 done: 300 mlx5_ib_put_native_port_mdev(ibdev, port_num); 301 return NOTIFY_DONE; 302 } 303 304 struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *ibdev, 305 u32 ib_port_num, 306 u32 *native_port_num) 307 { 308 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev, 309 ib_port_num); 310 struct mlx5_core_dev *mdev = NULL; 311 struct mlx5_ib_multiport_info *mpi; 312 struct mlx5_ib_port *port; 313 314 if (ibdev->ib_dev.type == RDMA_DEVICE_TYPE_SMI) { 315 if (native_port_num) 316 *native_port_num = smi_to_native_portnum(ibdev, 317 ib_port_num); 318 return ibdev->mdev; 319 320 } 321 322 if (!mlx5_core_mp_enabled(ibdev->mdev) || 323 ll != IB_LINK_LAYER_ETHERNET) { 324 if (native_port_num) 325 *native_port_num = ib_port_num; 326 return ibdev->mdev; 327 } 328 329 if (native_port_num) 330 *native_port_num = 1; 331 332 port = &ibdev->port[ib_port_num - 1]; 333 spin_lock(&port->mp.mpi_lock); 334 mpi = ibdev->port[ib_port_num - 1].mp.mpi; 335 if (mpi && !mpi->unaffiliate) { 336 mdev = mpi->mdev; 337 /* If it's the master no need to refcount, it'll exist 338 * as long as the ib_dev exists. 339 */ 340 if (!mpi->is_master) 341 mpi->mdev_refcnt++; 342 } 343 spin_unlock(&port->mp.mpi_lock); 344 345 return mdev; 346 } 347 348 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *ibdev, u32 port_num) 349 { 350 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev, 351 port_num); 352 struct mlx5_ib_multiport_info *mpi; 353 struct mlx5_ib_port *port; 354 355 if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 356 return; 357 358 port = &ibdev->port[port_num - 1]; 359 360 spin_lock(&port->mp.mpi_lock); 361 mpi = ibdev->port[port_num - 1].mp.mpi; 362 if (mpi->is_master) 363 goto out; 364 365 mpi->mdev_refcnt--; 366 if (mpi->unaffiliate) 367 complete(&mpi->unref_comp); 368 out: 369 spin_unlock(&port->mp.mpi_lock); 370 } 371 372 static int translate_eth_legacy_proto_oper(u32 eth_proto_oper, 373 u16 *active_speed, u8 *active_width) 374 { 375 switch (eth_proto_oper) { 376 case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII): 377 case MLX5E_PROT_MASK(MLX5E_1000BASE_KX): 378 case MLX5E_PROT_MASK(MLX5E_100BASE_TX): 379 case MLX5E_PROT_MASK(MLX5E_1000BASE_T): 380 *active_width = IB_WIDTH_1X; 381 *active_speed = IB_SPEED_SDR; 382 break; 383 case MLX5E_PROT_MASK(MLX5E_10GBASE_T): 384 case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4): 385 case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4): 386 case MLX5E_PROT_MASK(MLX5E_10GBASE_KR): 387 case MLX5E_PROT_MASK(MLX5E_10GBASE_CR): 388 case MLX5E_PROT_MASK(MLX5E_10GBASE_SR): 389 case MLX5E_PROT_MASK(MLX5E_10GBASE_ER): 390 *active_width = IB_WIDTH_1X; 391 *active_speed = IB_SPEED_QDR; 392 break; 393 case MLX5E_PROT_MASK(MLX5E_25GBASE_CR): 394 case MLX5E_PROT_MASK(MLX5E_25GBASE_KR): 395 case MLX5E_PROT_MASK(MLX5E_25GBASE_SR): 396 *active_width = IB_WIDTH_1X; 397 *active_speed = IB_SPEED_EDR; 398 break; 399 case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4): 400 case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4): 401 case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4): 402 case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4): 403 *active_width = IB_WIDTH_4X; 404 *active_speed = IB_SPEED_QDR; 405 break; 406 case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2): 407 case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2): 408 case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2): 409 *active_width = IB_WIDTH_1X; 410 *active_speed = IB_SPEED_HDR; 411 break; 412 case MLX5E_PROT_MASK(MLX5E_56GBASE_R4): 413 *active_width = IB_WIDTH_4X; 414 *active_speed = IB_SPEED_FDR; 415 break; 416 case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4): 417 case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4): 418 case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4): 419 case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4): 420 *active_width = IB_WIDTH_4X; 421 *active_speed = IB_SPEED_EDR; 422 break; 423 default: 424 return -EINVAL; 425 } 426 427 return 0; 428 } 429 430 static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u16 *active_speed, 431 u8 *active_width) 432 { 433 switch (eth_proto_oper) { 434 case MLX5E_PROT_MASK(MLX5E_SGMII_100M): 435 case MLX5E_PROT_MASK(MLX5E_1000BASE_X_SGMII): 436 *active_width = IB_WIDTH_1X; 437 *active_speed = IB_SPEED_SDR; 438 break; 439 case MLX5E_PROT_MASK(MLX5E_5GBASE_R): 440 *active_width = IB_WIDTH_1X; 441 *active_speed = IB_SPEED_DDR; 442 break; 443 case MLX5E_PROT_MASK(MLX5E_10GBASE_XFI_XAUI_1): 444 *active_width = IB_WIDTH_1X; 445 *active_speed = IB_SPEED_QDR; 446 break; 447 case MLX5E_PROT_MASK(MLX5E_40GBASE_XLAUI_4_XLPPI_4): 448 *active_width = IB_WIDTH_4X; 449 *active_speed = IB_SPEED_QDR; 450 break; 451 case MLX5E_PROT_MASK(MLX5E_25GAUI_1_25GBASE_CR_KR): 452 *active_width = IB_WIDTH_1X; 453 *active_speed = IB_SPEED_EDR; 454 break; 455 case MLX5E_PROT_MASK(MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2): 456 *active_width = IB_WIDTH_2X; 457 *active_speed = IB_SPEED_EDR; 458 break; 459 case MLX5E_PROT_MASK(MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR): 460 *active_width = IB_WIDTH_1X; 461 *active_speed = IB_SPEED_HDR; 462 break; 463 case MLX5E_PROT_MASK(MLX5E_CAUI_4_100GBASE_CR4_KR4): 464 *active_width = IB_WIDTH_4X; 465 *active_speed = IB_SPEED_EDR; 466 break; 467 case MLX5E_PROT_MASK(MLX5E_100GAUI_2_100GBASE_CR2_KR2): 468 *active_width = IB_WIDTH_2X; 469 *active_speed = IB_SPEED_HDR; 470 break; 471 case MLX5E_PROT_MASK(MLX5E_100GAUI_1_100GBASE_CR_KR): 472 *active_width = IB_WIDTH_1X; 473 *active_speed = IB_SPEED_NDR; 474 break; 475 case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4): 476 *active_width = IB_WIDTH_4X; 477 *active_speed = IB_SPEED_HDR; 478 break; 479 case MLX5E_PROT_MASK(MLX5E_200GAUI_2_200GBASE_CR2_KR2): 480 *active_width = IB_WIDTH_2X; 481 *active_speed = IB_SPEED_NDR; 482 break; 483 case MLX5E_PROT_MASK(MLX5E_400GAUI_8_400GBASE_CR8): 484 *active_width = IB_WIDTH_8X; 485 *active_speed = IB_SPEED_HDR; 486 break; 487 case MLX5E_PROT_MASK(MLX5E_400GAUI_4_400GBASE_CR4_KR4): 488 *active_width = IB_WIDTH_4X; 489 *active_speed = IB_SPEED_NDR; 490 break; 491 case MLX5E_PROT_MASK(MLX5E_800GAUI_8_800GBASE_CR8_KR8): 492 *active_width = IB_WIDTH_8X; 493 *active_speed = IB_SPEED_NDR; 494 break; 495 default: 496 return -EINVAL; 497 } 498 499 return 0; 500 } 501 502 static int translate_eth_proto_oper(u32 eth_proto_oper, u16 *active_speed, 503 u8 *active_width, bool ext) 504 { 505 return ext ? 506 translate_eth_ext_proto_oper(eth_proto_oper, active_speed, 507 active_width) : 508 translate_eth_legacy_proto_oper(eth_proto_oper, active_speed, 509 active_width); 510 } 511 512 static int mlx5_query_port_roce(struct ib_device *device, u32 port_num, 513 struct ib_port_attr *props) 514 { 515 struct mlx5_ib_dev *dev = to_mdev(device); 516 u32 out[MLX5_ST_SZ_DW(ptys_reg)] = {0}; 517 struct mlx5_core_dev *mdev; 518 struct net_device *ndev, *upper; 519 enum ib_mtu ndev_ib_mtu; 520 bool put_mdev = true; 521 u32 eth_prot_oper; 522 u32 mdev_port_num; 523 bool ext; 524 int err; 525 526 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 527 if (!mdev) { 528 /* This means the port isn't affiliated yet. Get the 529 * info for the master port instead. 530 */ 531 put_mdev = false; 532 mdev = dev->mdev; 533 mdev_port_num = 1; 534 port_num = 1; 535 } 536 537 /* Possible bad flows are checked before filling out props so in case 538 * of an error it will still be zeroed out. 539 * Use native port in case of reps 540 */ 541 if (dev->is_rep) 542 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN, 543 1, 0); 544 else 545 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN, 546 mdev_port_num, 0); 547 if (err) 548 goto out; 549 ext = !!MLX5_GET_ETH_PROTO(ptys_reg, out, true, eth_proto_capability); 550 eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper); 551 552 props->active_width = IB_WIDTH_4X; 553 props->active_speed = IB_SPEED_QDR; 554 555 translate_eth_proto_oper(eth_prot_oper, &props->active_speed, 556 &props->active_width, ext); 557 558 if (!dev->is_rep && dev->mdev->roce.roce_en) { 559 u16 qkey_viol_cntr; 560 561 props->port_cap_flags |= IB_PORT_CM_SUP; 562 props->ip_gids = true; 563 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev, 564 roce_address_table_size); 565 mlx5_query_nic_vport_qkey_viol_cntr(mdev, &qkey_viol_cntr); 566 props->qkey_viol_cntr = qkey_viol_cntr; 567 } 568 props->max_mtu = IB_MTU_4096; 569 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg); 570 props->pkey_tbl_len = 1; 571 props->state = IB_PORT_DOWN; 572 props->phys_state = IB_PORT_PHYS_STATE_DISABLED; 573 574 /* If this is a stub query for an unaffiliated port stop here */ 575 if (!put_mdev) 576 goto out; 577 578 ndev = ib_device_get_netdev(device, port_num); 579 if (!ndev) 580 goto out; 581 582 if (mlx5_lag_is_roce(mdev) || mlx5_lag_is_sriov(mdev)) { 583 rcu_read_lock(); 584 upper = netdev_master_upper_dev_get_rcu(ndev); 585 if (upper) { 586 dev_put(ndev); 587 ndev = upper; 588 dev_hold(ndev); 589 } 590 rcu_read_unlock(); 591 } 592 593 if (netif_running(ndev) && netif_carrier_ok(ndev)) { 594 props->state = IB_PORT_ACTIVE; 595 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 596 } 597 598 ndev_ib_mtu = iboe_get_mtu(ndev->mtu); 599 600 dev_put(ndev); 601 602 props->active_mtu = min(props->max_mtu, ndev_ib_mtu); 603 out: 604 if (put_mdev) 605 mlx5_ib_put_native_port_mdev(dev, port_num); 606 return err; 607 } 608 609 int set_roce_addr(struct mlx5_ib_dev *dev, u32 port_num, 610 unsigned int index, const union ib_gid *gid, 611 const struct ib_gid_attr *attr) 612 { 613 enum ib_gid_type gid_type; 614 u16 vlan_id = 0xffff; 615 u8 roce_version = 0; 616 u8 roce_l3_type = 0; 617 u8 mac[ETH_ALEN]; 618 int ret; 619 620 gid_type = attr->gid_type; 621 if (gid) { 622 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]); 623 if (ret) 624 return ret; 625 } 626 627 switch (gid_type) { 628 case IB_GID_TYPE_ROCE: 629 roce_version = MLX5_ROCE_VERSION_1; 630 break; 631 case IB_GID_TYPE_ROCE_UDP_ENCAP: 632 roce_version = MLX5_ROCE_VERSION_2; 633 if (gid && ipv6_addr_v4mapped((void *)gid)) 634 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4; 635 else 636 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6; 637 break; 638 639 default: 640 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type); 641 } 642 643 return mlx5_core_roce_gid_set(dev->mdev, index, roce_version, 644 roce_l3_type, gid->raw, mac, 645 vlan_id < VLAN_CFI_MASK, vlan_id, 646 port_num); 647 } 648 649 static int mlx5_ib_add_gid(const struct ib_gid_attr *attr, 650 __always_unused void **context) 651 { 652 int ret; 653 654 ret = mlx5r_add_gid_macsec_operations(attr); 655 if (ret) 656 return ret; 657 658 return set_roce_addr(to_mdev(attr->device), attr->port_num, 659 attr->index, &attr->gid, attr); 660 } 661 662 static int mlx5_ib_del_gid(const struct ib_gid_attr *attr, 663 __always_unused void **context) 664 { 665 int ret; 666 667 ret = set_roce_addr(to_mdev(attr->device), attr->port_num, 668 attr->index, NULL, attr); 669 if (ret) 670 return ret; 671 672 mlx5r_del_gid_macsec_operations(attr); 673 return 0; 674 } 675 676 __be16 mlx5_get_roce_udp_sport_min(const struct mlx5_ib_dev *dev, 677 const struct ib_gid_attr *attr) 678 { 679 if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) 680 return 0; 681 682 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port)); 683 } 684 685 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev) 686 { 687 if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB) 688 return !MLX5_CAP_GEN(dev->mdev, ib_virt); 689 return 0; 690 } 691 692 enum { 693 MLX5_VPORT_ACCESS_METHOD_MAD, 694 MLX5_VPORT_ACCESS_METHOD_HCA, 695 MLX5_VPORT_ACCESS_METHOD_NIC, 696 }; 697 698 static int mlx5_get_vport_access_method(struct ib_device *ibdev) 699 { 700 if (mlx5_use_mad_ifc(to_mdev(ibdev))) 701 return MLX5_VPORT_ACCESS_METHOD_MAD; 702 703 if (mlx5_ib_port_link_layer(ibdev, 1) == 704 IB_LINK_LAYER_ETHERNET) 705 return MLX5_VPORT_ACCESS_METHOD_NIC; 706 707 return MLX5_VPORT_ACCESS_METHOD_HCA; 708 } 709 710 static void get_atomic_caps(struct mlx5_ib_dev *dev, 711 u8 atomic_size_qp, 712 struct ib_device_attr *props) 713 { 714 u8 tmp; 715 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations); 716 u8 atomic_req_8B_endianness_mode = 717 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode); 718 719 /* Check if HW supports 8 bytes standard atomic operations and capable 720 * of host endianness respond 721 */ 722 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD; 723 if (((atomic_operations & tmp) == tmp) && 724 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) && 725 (atomic_req_8B_endianness_mode)) { 726 props->atomic_cap = IB_ATOMIC_HCA; 727 } else { 728 props->atomic_cap = IB_ATOMIC_NONE; 729 } 730 } 731 732 static void get_atomic_caps_qp(struct mlx5_ib_dev *dev, 733 struct ib_device_attr *props) 734 { 735 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp); 736 737 get_atomic_caps(dev, atomic_size_qp, props); 738 } 739 740 static int mlx5_query_system_image_guid(struct ib_device *ibdev, 741 __be64 *sys_image_guid) 742 { 743 struct mlx5_ib_dev *dev = to_mdev(ibdev); 744 struct mlx5_core_dev *mdev = dev->mdev; 745 u64 tmp; 746 int err; 747 748 switch (mlx5_get_vport_access_method(ibdev)) { 749 case MLX5_VPORT_ACCESS_METHOD_MAD: 750 return mlx5_query_mad_ifc_system_image_guid(ibdev, 751 sys_image_guid); 752 753 case MLX5_VPORT_ACCESS_METHOD_HCA: 754 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp); 755 break; 756 757 case MLX5_VPORT_ACCESS_METHOD_NIC: 758 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp); 759 break; 760 761 default: 762 return -EINVAL; 763 } 764 765 if (!err) 766 *sys_image_guid = cpu_to_be64(tmp); 767 768 return err; 769 770 } 771 772 static int mlx5_query_max_pkeys(struct ib_device *ibdev, 773 u16 *max_pkeys) 774 { 775 struct mlx5_ib_dev *dev = to_mdev(ibdev); 776 struct mlx5_core_dev *mdev = dev->mdev; 777 778 switch (mlx5_get_vport_access_method(ibdev)) { 779 case MLX5_VPORT_ACCESS_METHOD_MAD: 780 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys); 781 782 case MLX5_VPORT_ACCESS_METHOD_HCA: 783 case MLX5_VPORT_ACCESS_METHOD_NIC: 784 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, 785 pkey_table_size)); 786 return 0; 787 788 default: 789 return -EINVAL; 790 } 791 } 792 793 static int mlx5_query_vendor_id(struct ib_device *ibdev, 794 u32 *vendor_id) 795 { 796 struct mlx5_ib_dev *dev = to_mdev(ibdev); 797 798 switch (mlx5_get_vport_access_method(ibdev)) { 799 case MLX5_VPORT_ACCESS_METHOD_MAD: 800 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id); 801 802 case MLX5_VPORT_ACCESS_METHOD_HCA: 803 case MLX5_VPORT_ACCESS_METHOD_NIC: 804 return mlx5_core_query_vendor_id(dev->mdev, vendor_id); 805 806 default: 807 return -EINVAL; 808 } 809 } 810 811 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev, 812 __be64 *node_guid) 813 { 814 u64 tmp; 815 int err; 816 817 switch (mlx5_get_vport_access_method(&dev->ib_dev)) { 818 case MLX5_VPORT_ACCESS_METHOD_MAD: 819 return mlx5_query_mad_ifc_node_guid(dev, node_guid); 820 821 case MLX5_VPORT_ACCESS_METHOD_HCA: 822 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp); 823 break; 824 825 case MLX5_VPORT_ACCESS_METHOD_NIC: 826 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp); 827 break; 828 829 default: 830 return -EINVAL; 831 } 832 833 if (!err) 834 *node_guid = cpu_to_be64(tmp); 835 836 return err; 837 } 838 839 struct mlx5_reg_node_desc { 840 u8 desc[IB_DEVICE_NODE_DESC_MAX]; 841 }; 842 843 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 844 { 845 struct mlx5_reg_node_desc in; 846 847 if (mlx5_use_mad_ifc(dev)) 848 return mlx5_query_mad_ifc_node_desc(dev, node_desc); 849 850 memset(&in, 0, sizeof(in)); 851 852 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc, 853 sizeof(struct mlx5_reg_node_desc), 854 MLX5_REG_NODE_DESC, 0, 0); 855 } 856 857 static void fill_esw_mgr_reg_c0(struct mlx5_core_dev *mdev, 858 struct mlx5_ib_query_device_resp *resp) 859 { 860 struct mlx5_eswitch *esw = mdev->priv.eswitch; 861 u16 vport = mlx5_eswitch_manager_vport(mdev); 862 863 resp->reg_c0.value = mlx5_eswitch_get_vport_metadata_for_match(esw, 864 vport); 865 resp->reg_c0.mask = mlx5_eswitch_get_vport_metadata_mask(); 866 } 867 868 static int mlx5_ib_query_device(struct ib_device *ibdev, 869 struct ib_device_attr *props, 870 struct ib_udata *uhw) 871 { 872 size_t uhw_outlen = (uhw) ? uhw->outlen : 0; 873 struct mlx5_ib_dev *dev = to_mdev(ibdev); 874 struct mlx5_core_dev *mdev = dev->mdev; 875 int err = -ENOMEM; 876 int max_sq_desc; 877 int max_rq_sg; 878 int max_sq_sg; 879 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz); 880 bool raw_support = !mlx5_core_mp_enabled(mdev); 881 struct mlx5_ib_query_device_resp resp = {}; 882 size_t resp_len; 883 u64 max_tso; 884 885 resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length); 886 if (uhw_outlen && uhw_outlen < resp_len) 887 return -EINVAL; 888 889 resp.response_length = resp_len; 890 891 if (uhw && uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen)) 892 return -EINVAL; 893 894 memset(props, 0, sizeof(*props)); 895 err = mlx5_query_system_image_guid(ibdev, 896 &props->sys_image_guid); 897 if (err) 898 return err; 899 900 props->max_pkeys = dev->pkey_table_len; 901 902 err = mlx5_query_vendor_id(ibdev, &props->vendor_id); 903 if (err) 904 return err; 905 906 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) | 907 (fw_rev_min(dev->mdev) << 16) | 908 fw_rev_sub(dev->mdev); 909 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 910 IB_DEVICE_PORT_ACTIVE_EVENT | 911 IB_DEVICE_SYS_IMAGE_GUID | 912 IB_DEVICE_RC_RNR_NAK_GEN; 913 914 if (MLX5_CAP_GEN(mdev, pkv)) 915 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 916 if (MLX5_CAP_GEN(mdev, qkv)) 917 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 918 if (MLX5_CAP_GEN(mdev, apm)) 919 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 920 if (MLX5_CAP_GEN(mdev, xrc)) 921 props->device_cap_flags |= IB_DEVICE_XRC; 922 if (MLX5_CAP_GEN(mdev, imaicl)) { 923 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW | 924 IB_DEVICE_MEM_WINDOW_TYPE_2B; 925 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 926 /* We support 'Gappy' memory registration too */ 927 props->kernel_cap_flags |= IBK_SG_GAPS_REG; 928 } 929 /* IB_WR_REG_MR always requires changing the entity size with UMR */ 930 if (!MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) 931 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 932 if (MLX5_CAP_GEN(mdev, sho)) { 933 props->kernel_cap_flags |= IBK_INTEGRITY_HANDOVER; 934 /* At this stage no support for signature handover */ 935 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 | 936 IB_PROT_T10DIF_TYPE_2 | 937 IB_PROT_T10DIF_TYPE_3; 938 props->sig_guard_cap = IB_GUARD_T10DIF_CRC | 939 IB_GUARD_T10DIF_CSUM; 940 } 941 if (MLX5_CAP_GEN(mdev, block_lb_mc)) 942 props->kernel_cap_flags |= IBK_BLOCK_MULTICAST_LOOPBACK; 943 944 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) { 945 if (MLX5_CAP_ETH(mdev, csum_cap)) { 946 /* Legacy bit to support old userspace libraries */ 947 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 948 props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM; 949 } 950 951 if (MLX5_CAP_ETH(dev->mdev, vlan_cap)) 952 props->raw_packet_caps |= 953 IB_RAW_PACKET_CAP_CVLAN_STRIPPING; 954 955 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) { 956 max_tso = MLX5_CAP_ETH(mdev, max_lso_cap); 957 if (max_tso) { 958 resp.tso_caps.max_tso = 1 << max_tso; 959 resp.tso_caps.supported_qpts |= 960 1 << IB_QPT_RAW_PACKET; 961 resp.response_length += sizeof(resp.tso_caps); 962 } 963 } 964 965 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) { 966 resp.rss_caps.rx_hash_function = 967 MLX5_RX_HASH_FUNC_TOEPLITZ; 968 resp.rss_caps.rx_hash_fields_mask = 969 MLX5_RX_HASH_SRC_IPV4 | 970 MLX5_RX_HASH_DST_IPV4 | 971 MLX5_RX_HASH_SRC_IPV6 | 972 MLX5_RX_HASH_DST_IPV6 | 973 MLX5_RX_HASH_SRC_PORT_TCP | 974 MLX5_RX_HASH_DST_PORT_TCP | 975 MLX5_RX_HASH_SRC_PORT_UDP | 976 MLX5_RX_HASH_DST_PORT_UDP | 977 MLX5_RX_HASH_INNER; 978 resp.response_length += sizeof(resp.rss_caps); 979 } 980 } else { 981 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) 982 resp.response_length += sizeof(resp.tso_caps); 983 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) 984 resp.response_length += sizeof(resp.rss_caps); 985 } 986 987 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) { 988 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 989 props->kernel_cap_flags |= IBK_UD_TSO; 990 } 991 992 if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) && 993 MLX5_CAP_GEN(dev->mdev, general_notification_event) && 994 raw_support) 995 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP; 996 997 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) && 998 MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap)) 999 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 1000 1001 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && 1002 MLX5_CAP_ETH(dev->mdev, scatter_fcs) && 1003 raw_support) { 1004 /* Legacy bit to support old userspace libraries */ 1005 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS; 1006 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS; 1007 } 1008 1009 if (MLX5_CAP_DEV_MEM(mdev, memic)) { 1010 props->max_dm_size = 1011 MLX5_CAP_DEV_MEM(mdev, max_memic_size); 1012 } 1013 1014 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) 1015 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 1016 1017 if (MLX5_CAP_GEN(mdev, end_pad)) 1018 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING; 1019 1020 props->vendor_part_id = mdev->pdev->device; 1021 props->hw_ver = mdev->pdev->revision; 1022 1023 props->max_mr_size = ~0ull; 1024 props->page_size_cap = ~(min_page_size - 1); 1025 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp); 1026 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 1027 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) / 1028 sizeof(struct mlx5_wqe_data_seg); 1029 max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512); 1030 max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) - 1031 sizeof(struct mlx5_wqe_raddr_seg)) / 1032 sizeof(struct mlx5_wqe_data_seg); 1033 props->max_send_sge = max_sq_sg; 1034 props->max_recv_sge = max_rq_sg; 1035 props->max_sge_rd = MLX5_MAX_SGE_RD; 1036 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq); 1037 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1; 1038 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 1039 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd); 1040 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp); 1041 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp); 1042 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq); 1043 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1; 1044 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay); 1045 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 1046 props->max_srq_sge = max_rq_sg - 1; 1047 props->max_fast_reg_page_list_len = 1048 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size); 1049 props->max_pi_fast_reg_page_list_len = 1050 props->max_fast_reg_page_list_len / 2; 1051 props->max_sgl_rd = 1052 MLX5_CAP_GEN(mdev, max_sgl_for_optimized_performance); 1053 get_atomic_caps_qp(dev, props); 1054 props->masked_atomic_cap = IB_ATOMIC_NONE; 1055 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg); 1056 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg); 1057 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 1058 props->max_mcast_grp; 1059 props->max_ah = INT_MAX; 1060 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz); 1061 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL; 1062 1063 if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) { 1064 if (dev->odp_caps.general_caps & IB_ODP_SUPPORT) 1065 props->kernel_cap_flags |= IBK_ON_DEMAND_PAGING; 1066 props->odp_caps = dev->odp_caps; 1067 if (!uhw) { 1068 /* ODP for kernel QPs is not implemented for receive 1069 * WQEs and SRQ WQEs 1070 */ 1071 props->odp_caps.per_transport_caps.rc_odp_caps &= 1072 ~(IB_ODP_SUPPORT_READ | 1073 IB_ODP_SUPPORT_SRQ_RECV); 1074 props->odp_caps.per_transport_caps.uc_odp_caps &= 1075 ~(IB_ODP_SUPPORT_READ | 1076 IB_ODP_SUPPORT_SRQ_RECV); 1077 props->odp_caps.per_transport_caps.ud_odp_caps &= 1078 ~(IB_ODP_SUPPORT_READ | 1079 IB_ODP_SUPPORT_SRQ_RECV); 1080 props->odp_caps.per_transport_caps.xrc_odp_caps &= 1081 ~(IB_ODP_SUPPORT_READ | 1082 IB_ODP_SUPPORT_SRQ_RECV); 1083 } 1084 } 1085 1086 if (mlx5_core_is_vf(mdev)) 1087 props->kernel_cap_flags |= IBK_VIRTUAL_FUNCTION; 1088 1089 if (mlx5_ib_port_link_layer(ibdev, 1) == 1090 IB_LINK_LAYER_ETHERNET && raw_support) { 1091 props->rss_caps.max_rwq_indirection_tables = 1092 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt); 1093 props->rss_caps.max_rwq_indirection_table_size = 1094 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size); 1095 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; 1096 props->max_wq_type_rq = 1097 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq); 1098 } 1099 1100 if (MLX5_CAP_GEN(mdev, tag_matching)) { 1101 props->tm_caps.max_num_tags = 1102 (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1; 1103 props->tm_caps.max_ops = 1104 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 1105 props->tm_caps.max_sge = MLX5_TM_MAX_SGE; 1106 } 1107 1108 if (MLX5_CAP_GEN(mdev, tag_matching) && 1109 MLX5_CAP_GEN(mdev, rndv_offload_rc)) { 1110 props->tm_caps.flags = IB_TM_CAP_RNDV_RC; 1111 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE; 1112 } 1113 1114 if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) { 1115 props->cq_caps.max_cq_moderation_count = 1116 MLX5_MAX_CQ_COUNT; 1117 props->cq_caps.max_cq_moderation_period = 1118 MLX5_MAX_CQ_PERIOD; 1119 } 1120 1121 if (offsetofend(typeof(resp), cqe_comp_caps) <= uhw_outlen) { 1122 resp.response_length += sizeof(resp.cqe_comp_caps); 1123 1124 if (MLX5_CAP_GEN(dev->mdev, cqe_compression)) { 1125 resp.cqe_comp_caps.max_num = 1126 MLX5_CAP_GEN(dev->mdev, 1127 cqe_compression_max_num); 1128 1129 resp.cqe_comp_caps.supported_format = 1130 MLX5_IB_CQE_RES_FORMAT_HASH | 1131 MLX5_IB_CQE_RES_FORMAT_CSUM; 1132 1133 if (MLX5_CAP_GEN(dev->mdev, mini_cqe_resp_stride_index)) 1134 resp.cqe_comp_caps.supported_format |= 1135 MLX5_IB_CQE_RES_FORMAT_CSUM_STRIDX; 1136 } 1137 } 1138 1139 if (offsetofend(typeof(resp), packet_pacing_caps) <= uhw_outlen && 1140 raw_support) { 1141 if (MLX5_CAP_QOS(mdev, packet_pacing) && 1142 MLX5_CAP_GEN(mdev, qos)) { 1143 resp.packet_pacing_caps.qp_rate_limit_max = 1144 MLX5_CAP_QOS(mdev, packet_pacing_max_rate); 1145 resp.packet_pacing_caps.qp_rate_limit_min = 1146 MLX5_CAP_QOS(mdev, packet_pacing_min_rate); 1147 resp.packet_pacing_caps.supported_qpts |= 1148 1 << IB_QPT_RAW_PACKET; 1149 if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) && 1150 MLX5_CAP_QOS(mdev, packet_pacing_typical_size)) 1151 resp.packet_pacing_caps.cap_flags |= 1152 MLX5_IB_PP_SUPPORT_BURST; 1153 } 1154 resp.response_length += sizeof(resp.packet_pacing_caps); 1155 } 1156 1157 if (offsetofend(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes) <= 1158 uhw_outlen) { 1159 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe)) 1160 resp.mlx5_ib_support_multi_pkt_send_wqes = 1161 MLX5_IB_ALLOW_MPW; 1162 1163 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe)) 1164 resp.mlx5_ib_support_multi_pkt_send_wqes |= 1165 MLX5_IB_SUPPORT_EMPW; 1166 1167 resp.response_length += 1168 sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes); 1169 } 1170 1171 if (offsetofend(typeof(resp), flags) <= uhw_outlen) { 1172 resp.response_length += sizeof(resp.flags); 1173 1174 if (MLX5_CAP_GEN(mdev, cqe_compression_128)) 1175 resp.flags |= 1176 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP; 1177 1178 if (MLX5_CAP_GEN(mdev, cqe_128_always)) 1179 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD; 1180 if (MLX5_CAP_GEN(mdev, qp_packet_based)) 1181 resp.flags |= 1182 MLX5_IB_QUERY_DEV_RESP_PACKET_BASED_CREDIT_MODE; 1183 1184 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_SCAT2CQE_DCT; 1185 1186 if (MLX5_CAP_GEN_2(mdev, dp_ordering_force) && 1187 (MLX5_CAP_GEN(mdev, dp_ordering_ooo_all_xrc) || 1188 MLX5_CAP_GEN(mdev, dp_ordering_ooo_all_dc) || 1189 MLX5_CAP_GEN(mdev, dp_ordering_ooo_all_rc) || 1190 MLX5_CAP_GEN(mdev, dp_ordering_ooo_all_ud) || 1191 MLX5_CAP_GEN(mdev, dp_ordering_ooo_all_uc))) 1192 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_OOO_DP; 1193 } 1194 1195 if (offsetofend(typeof(resp), sw_parsing_caps) <= uhw_outlen) { 1196 resp.response_length += sizeof(resp.sw_parsing_caps); 1197 if (MLX5_CAP_ETH(mdev, swp)) { 1198 resp.sw_parsing_caps.sw_parsing_offloads |= 1199 MLX5_IB_SW_PARSING; 1200 1201 if (MLX5_CAP_ETH(mdev, swp_csum)) 1202 resp.sw_parsing_caps.sw_parsing_offloads |= 1203 MLX5_IB_SW_PARSING_CSUM; 1204 1205 if (MLX5_CAP_ETH(mdev, swp_lso)) 1206 resp.sw_parsing_caps.sw_parsing_offloads |= 1207 MLX5_IB_SW_PARSING_LSO; 1208 1209 if (resp.sw_parsing_caps.sw_parsing_offloads) 1210 resp.sw_parsing_caps.supported_qpts = 1211 BIT(IB_QPT_RAW_PACKET); 1212 } 1213 } 1214 1215 if (offsetofend(typeof(resp), striding_rq_caps) <= uhw_outlen && 1216 raw_support) { 1217 resp.response_length += sizeof(resp.striding_rq_caps); 1218 if (MLX5_CAP_GEN(mdev, striding_rq)) { 1219 resp.striding_rq_caps.min_single_stride_log_num_of_bytes = 1220 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES; 1221 resp.striding_rq_caps.max_single_stride_log_num_of_bytes = 1222 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES; 1223 if (MLX5_CAP_GEN(dev->mdev, ext_stride_num_range)) 1224 resp.striding_rq_caps 1225 .min_single_wqe_log_num_of_strides = 1226 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES; 1227 else 1228 resp.striding_rq_caps 1229 .min_single_wqe_log_num_of_strides = 1230 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES; 1231 resp.striding_rq_caps.max_single_wqe_log_num_of_strides = 1232 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES; 1233 resp.striding_rq_caps.supported_qpts = 1234 BIT(IB_QPT_RAW_PACKET); 1235 } 1236 } 1237 1238 if (offsetofend(typeof(resp), tunnel_offloads_caps) <= uhw_outlen) { 1239 resp.response_length += sizeof(resp.tunnel_offloads_caps); 1240 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan)) 1241 resp.tunnel_offloads_caps |= 1242 MLX5_IB_TUNNELED_OFFLOADS_VXLAN; 1243 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx)) 1244 resp.tunnel_offloads_caps |= 1245 MLX5_IB_TUNNELED_OFFLOADS_GENEVE; 1246 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) 1247 resp.tunnel_offloads_caps |= 1248 MLX5_IB_TUNNELED_OFFLOADS_GRE; 1249 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_gre)) 1250 resp.tunnel_offloads_caps |= 1251 MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE; 1252 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_udp)) 1253 resp.tunnel_offloads_caps |= 1254 MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP; 1255 } 1256 1257 if (offsetofend(typeof(resp), dci_streams_caps) <= uhw_outlen) { 1258 resp.response_length += sizeof(resp.dci_streams_caps); 1259 1260 resp.dci_streams_caps.max_log_num_concurent = 1261 MLX5_CAP_GEN(mdev, log_max_dci_stream_channels); 1262 1263 resp.dci_streams_caps.max_log_num_errored = 1264 MLX5_CAP_GEN(mdev, log_max_dci_errored_streams); 1265 } 1266 1267 if (offsetofend(typeof(resp), reserved) <= uhw_outlen) 1268 resp.response_length += sizeof(resp.reserved); 1269 1270 if (offsetofend(typeof(resp), reg_c0) <= uhw_outlen) { 1271 struct mlx5_eswitch *esw = mdev->priv.eswitch; 1272 1273 resp.response_length += sizeof(resp.reg_c0); 1274 1275 if (mlx5_eswitch_mode(mdev) == MLX5_ESWITCH_OFFLOADS && 1276 mlx5_eswitch_vport_match_metadata_enabled(esw)) 1277 fill_esw_mgr_reg_c0(mdev, &resp); 1278 } 1279 1280 if (uhw_outlen) { 1281 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 1282 1283 if (err) 1284 return err; 1285 } 1286 1287 return 0; 1288 } 1289 1290 static void translate_active_width(struct ib_device *ibdev, u16 active_width, 1291 u8 *ib_width) 1292 { 1293 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1294 1295 if (active_width & MLX5_PTYS_WIDTH_1X) 1296 *ib_width = IB_WIDTH_1X; 1297 else if (active_width & MLX5_PTYS_WIDTH_2X) 1298 *ib_width = IB_WIDTH_2X; 1299 else if (active_width & MLX5_PTYS_WIDTH_4X) 1300 *ib_width = IB_WIDTH_4X; 1301 else if (active_width & MLX5_PTYS_WIDTH_8X) 1302 *ib_width = IB_WIDTH_8X; 1303 else if (active_width & MLX5_PTYS_WIDTH_12X) 1304 *ib_width = IB_WIDTH_12X; 1305 else { 1306 mlx5_ib_dbg(dev, "Invalid active_width %d, setting width to default value: 4x\n", 1307 active_width); 1308 *ib_width = IB_WIDTH_4X; 1309 } 1310 1311 return; 1312 } 1313 1314 static int mlx5_mtu_to_ib_mtu(int mtu) 1315 { 1316 switch (mtu) { 1317 case 256: return 1; 1318 case 512: return 2; 1319 case 1024: return 3; 1320 case 2048: return 4; 1321 case 4096: return 5; 1322 default: 1323 pr_warn("invalid mtu\n"); 1324 return -1; 1325 } 1326 } 1327 1328 enum ib_max_vl_num { 1329 __IB_MAX_VL_0 = 1, 1330 __IB_MAX_VL_0_1 = 2, 1331 __IB_MAX_VL_0_3 = 3, 1332 __IB_MAX_VL_0_7 = 4, 1333 __IB_MAX_VL_0_14 = 5, 1334 }; 1335 1336 enum mlx5_vl_hw_cap { 1337 MLX5_VL_HW_0 = 1, 1338 MLX5_VL_HW_0_1 = 2, 1339 MLX5_VL_HW_0_2 = 3, 1340 MLX5_VL_HW_0_3 = 4, 1341 MLX5_VL_HW_0_4 = 5, 1342 MLX5_VL_HW_0_5 = 6, 1343 MLX5_VL_HW_0_6 = 7, 1344 MLX5_VL_HW_0_7 = 8, 1345 MLX5_VL_HW_0_14 = 15 1346 }; 1347 1348 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap, 1349 u8 *max_vl_num) 1350 { 1351 switch (vl_hw_cap) { 1352 case MLX5_VL_HW_0: 1353 *max_vl_num = __IB_MAX_VL_0; 1354 break; 1355 case MLX5_VL_HW_0_1: 1356 *max_vl_num = __IB_MAX_VL_0_1; 1357 break; 1358 case MLX5_VL_HW_0_3: 1359 *max_vl_num = __IB_MAX_VL_0_3; 1360 break; 1361 case MLX5_VL_HW_0_7: 1362 *max_vl_num = __IB_MAX_VL_0_7; 1363 break; 1364 case MLX5_VL_HW_0_14: 1365 *max_vl_num = __IB_MAX_VL_0_14; 1366 break; 1367 1368 default: 1369 return -EINVAL; 1370 } 1371 1372 return 0; 1373 } 1374 1375 static int mlx5_query_hca_port(struct ib_device *ibdev, u32 port, 1376 struct ib_port_attr *props) 1377 { 1378 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1379 struct mlx5_core_dev *mdev = dev->mdev; 1380 struct mlx5_hca_vport_context *rep; 1381 u8 vl_hw_cap, plane_index = 0; 1382 u16 max_mtu; 1383 u16 oper_mtu; 1384 int err; 1385 u16 ib_link_width_oper; 1386 1387 rep = kzalloc(sizeof(*rep), GFP_KERNEL); 1388 if (!rep) { 1389 err = -ENOMEM; 1390 goto out; 1391 } 1392 1393 /* props being zeroed by the caller, avoid zeroing it here */ 1394 1395 if (ibdev->type == RDMA_DEVICE_TYPE_SMI) { 1396 plane_index = port; 1397 port = smi_to_native_portnum(dev, port); 1398 } 1399 1400 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep); 1401 if (err) 1402 goto out; 1403 1404 props->lid = rep->lid; 1405 props->lmc = rep->lmc; 1406 props->sm_lid = rep->sm_lid; 1407 props->sm_sl = rep->sm_sl; 1408 props->state = rep->vport_state; 1409 props->phys_state = rep->port_physical_state; 1410 1411 props->port_cap_flags = rep->cap_mask1; 1412 if (dev->num_plane) { 1413 props->port_cap_flags |= IB_PORT_SM_DISABLED; 1414 props->port_cap_flags &= ~IB_PORT_SM; 1415 } else if (ibdev->type == RDMA_DEVICE_TYPE_SMI) 1416 props->port_cap_flags &= ~IB_PORT_CM_SUP; 1417 1418 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size)); 1419 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 1420 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size)); 1421 props->bad_pkey_cntr = rep->pkey_violation_counter; 1422 props->qkey_viol_cntr = rep->qkey_violation_counter; 1423 props->subnet_timeout = rep->subnet_timeout; 1424 props->init_type_reply = rep->init_type_reply; 1425 1426 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) 1427 props->port_cap_flags2 = rep->cap_mask2; 1428 1429 err = mlx5_query_ib_port_oper(mdev, &ib_link_width_oper, 1430 &props->active_speed, port, plane_index); 1431 if (err) 1432 goto out; 1433 1434 translate_active_width(ibdev, ib_link_width_oper, &props->active_width); 1435 1436 mlx5_query_port_max_mtu(mdev, &max_mtu, port); 1437 1438 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu); 1439 1440 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port); 1441 1442 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu); 1443 1444 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port); 1445 if (err) 1446 goto out; 1447 1448 err = translate_max_vl_num(ibdev, vl_hw_cap, 1449 &props->max_vl_num); 1450 out: 1451 kfree(rep); 1452 return err; 1453 } 1454 1455 int mlx5_ib_query_port(struct ib_device *ibdev, u32 port, 1456 struct ib_port_attr *props) 1457 { 1458 unsigned int count; 1459 int ret; 1460 1461 switch (mlx5_get_vport_access_method(ibdev)) { 1462 case MLX5_VPORT_ACCESS_METHOD_MAD: 1463 ret = mlx5_query_mad_ifc_port(ibdev, port, props); 1464 break; 1465 1466 case MLX5_VPORT_ACCESS_METHOD_HCA: 1467 ret = mlx5_query_hca_port(ibdev, port, props); 1468 break; 1469 1470 case MLX5_VPORT_ACCESS_METHOD_NIC: 1471 ret = mlx5_query_port_roce(ibdev, port, props); 1472 break; 1473 1474 default: 1475 ret = -EINVAL; 1476 } 1477 1478 if (!ret && props) { 1479 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1480 struct mlx5_core_dev *mdev; 1481 bool put_mdev = true; 1482 1483 mdev = mlx5_ib_get_native_port_mdev(dev, port, NULL); 1484 if (!mdev) { 1485 /* If the port isn't affiliated yet query the master. 1486 * The master and slave will have the same values. 1487 */ 1488 mdev = dev->mdev; 1489 port = 1; 1490 put_mdev = false; 1491 } 1492 count = mlx5_core_reserved_gids_count(mdev); 1493 if (put_mdev) 1494 mlx5_ib_put_native_port_mdev(dev, port); 1495 props->gid_tbl_len -= count; 1496 } 1497 return ret; 1498 } 1499 1500 static int mlx5_ib_rep_query_port(struct ib_device *ibdev, u32 port, 1501 struct ib_port_attr *props) 1502 { 1503 return mlx5_query_port_roce(ibdev, port, props); 1504 } 1505 1506 static int mlx5_ib_rep_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 1507 u16 *pkey) 1508 { 1509 /* Default special Pkey for representor device port as per the 1510 * IB specification 1.3 section 10.9.1.2. 1511 */ 1512 *pkey = 0xffff; 1513 return 0; 1514 } 1515 1516 static int mlx5_ib_query_gid(struct ib_device *ibdev, u32 port, int index, 1517 union ib_gid *gid) 1518 { 1519 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1520 struct mlx5_core_dev *mdev = dev->mdev; 1521 1522 switch (mlx5_get_vport_access_method(ibdev)) { 1523 case MLX5_VPORT_ACCESS_METHOD_MAD: 1524 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid); 1525 1526 case MLX5_VPORT_ACCESS_METHOD_HCA: 1527 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid); 1528 1529 default: 1530 return -EINVAL; 1531 } 1532 1533 } 1534 1535 static int mlx5_query_hca_nic_pkey(struct ib_device *ibdev, u32 port, 1536 u16 index, u16 *pkey) 1537 { 1538 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1539 struct mlx5_core_dev *mdev; 1540 bool put_mdev = true; 1541 u32 mdev_port_num; 1542 int err; 1543 1544 mdev = mlx5_ib_get_native_port_mdev(dev, port, &mdev_port_num); 1545 if (!mdev) { 1546 /* The port isn't affiliated yet, get the PKey from the master 1547 * port. For RoCE the PKey tables will be the same. 1548 */ 1549 put_mdev = false; 1550 mdev = dev->mdev; 1551 mdev_port_num = 1; 1552 } 1553 1554 err = mlx5_query_hca_vport_pkey(mdev, 0, mdev_port_num, 0, 1555 index, pkey); 1556 if (put_mdev) 1557 mlx5_ib_put_native_port_mdev(dev, port); 1558 1559 return err; 1560 } 1561 1562 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 1563 u16 *pkey) 1564 { 1565 switch (mlx5_get_vport_access_method(ibdev)) { 1566 case MLX5_VPORT_ACCESS_METHOD_MAD: 1567 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey); 1568 1569 case MLX5_VPORT_ACCESS_METHOD_HCA: 1570 case MLX5_VPORT_ACCESS_METHOD_NIC: 1571 return mlx5_query_hca_nic_pkey(ibdev, port, index, pkey); 1572 default: 1573 return -EINVAL; 1574 } 1575 } 1576 1577 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 1578 struct ib_device_modify *props) 1579 { 1580 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1581 struct mlx5_reg_node_desc in; 1582 struct mlx5_reg_node_desc out; 1583 int err; 1584 1585 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 1586 return -EOPNOTSUPP; 1587 1588 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 1589 return 0; 1590 1591 /* 1592 * If possible, pass node desc to FW, so it can generate 1593 * a 144 trap. If cmd fails, just ignore. 1594 */ 1595 memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1596 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, 1597 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 1598 if (err) 1599 return err; 1600 1601 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1602 1603 return err; 1604 } 1605 1606 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u32 port_num, u32 mask, 1607 u32 value) 1608 { 1609 struct mlx5_hca_vport_context ctx = {}; 1610 struct mlx5_core_dev *mdev; 1611 u32 mdev_port_num; 1612 int err; 1613 1614 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 1615 if (!mdev) 1616 return -ENODEV; 1617 1618 err = mlx5_query_hca_vport_context(mdev, 0, mdev_port_num, 0, &ctx); 1619 if (err) 1620 goto out; 1621 1622 if (~ctx.cap_mask1_perm & mask) { 1623 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n", 1624 mask, ctx.cap_mask1_perm); 1625 err = -EINVAL; 1626 goto out; 1627 } 1628 1629 ctx.cap_mask1 = value; 1630 ctx.cap_mask1_perm = mask; 1631 err = mlx5_core_modify_hca_vport_context(mdev, 0, mdev_port_num, 1632 0, &ctx); 1633 1634 out: 1635 mlx5_ib_put_native_port_mdev(dev, port_num); 1636 1637 return err; 1638 } 1639 1640 static int mlx5_ib_modify_port(struct ib_device *ibdev, u32 port, int mask, 1641 struct ib_port_modify *props) 1642 { 1643 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1644 struct ib_port_attr attr; 1645 u32 tmp; 1646 int err; 1647 u32 change_mask; 1648 u32 value; 1649 bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) == 1650 IB_LINK_LAYER_INFINIBAND); 1651 1652 /* CM layer calls ib_modify_port() regardless of the link layer. For 1653 * Ethernet ports, qkey violation and Port capabilities are meaningless. 1654 */ 1655 if (!is_ib) 1656 return 0; 1657 1658 if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) { 1659 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask; 1660 value = ~props->clr_port_cap_mask | props->set_port_cap_mask; 1661 return set_port_caps_atomic(dev, port, change_mask, value); 1662 } 1663 1664 mutex_lock(&dev->cap_mask_mutex); 1665 1666 err = ib_query_port(ibdev, port, &attr); 1667 if (err) 1668 goto out; 1669 1670 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 1671 ~props->clr_port_cap_mask; 1672 1673 err = mlx5_set_port_caps(dev->mdev, port, tmp); 1674 1675 out: 1676 mutex_unlock(&dev->cap_mask_mutex); 1677 return err; 1678 } 1679 1680 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps) 1681 { 1682 mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n", 1683 caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n"); 1684 } 1685 1686 static u16 calc_dynamic_bfregs(int uars_per_sys_page) 1687 { 1688 /* Large page with non 4k uar support might limit the dynamic size */ 1689 if (uars_per_sys_page == 1 && PAGE_SIZE > 4096) 1690 return MLX5_MIN_DYN_BFREGS; 1691 1692 return MLX5_MAX_DYN_BFREGS; 1693 } 1694 1695 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k, 1696 struct mlx5_ib_alloc_ucontext_req_v2 *req, 1697 struct mlx5_bfreg_info *bfregi) 1698 { 1699 int uars_per_sys_page; 1700 int bfregs_per_sys_page; 1701 int ref_bfregs = req->total_num_bfregs; 1702 1703 if (req->total_num_bfregs == 0) 1704 return -EINVAL; 1705 1706 BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE); 1707 BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE); 1708 1709 if (req->total_num_bfregs > MLX5_MAX_BFREGS) 1710 return -ENOMEM; 1711 1712 uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k); 1713 bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR; 1714 /* This holds the required static allocation asked by the user */ 1715 req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page); 1716 if (req->num_low_latency_bfregs > req->total_num_bfregs - 1) 1717 return -EINVAL; 1718 1719 bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page; 1720 bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page); 1721 bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs; 1722 bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page; 1723 1724 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", 1725 MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no", 1726 lib_uar_4k ? "yes" : "no", ref_bfregs, 1727 req->total_num_bfregs, bfregi->total_num_bfregs, 1728 bfregi->num_sys_pages); 1729 1730 return 0; 1731 } 1732 1733 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context) 1734 { 1735 struct mlx5_bfreg_info *bfregi; 1736 int err; 1737 int i; 1738 1739 bfregi = &context->bfregi; 1740 for (i = 0; i < bfregi->num_static_sys_pages; i++) { 1741 err = mlx5_cmd_uar_alloc(dev->mdev, &bfregi->sys_pages[i], 1742 context->devx_uid); 1743 if (err) 1744 goto error; 1745 1746 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]); 1747 } 1748 1749 for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++) 1750 bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX; 1751 1752 return 0; 1753 1754 error: 1755 for (--i; i >= 0; i--) 1756 if (mlx5_cmd_uar_dealloc(dev->mdev, bfregi->sys_pages[i], 1757 context->devx_uid)) 1758 mlx5_ib_warn(dev, "failed to free uar %d\n", i); 1759 1760 return err; 1761 } 1762 1763 static void deallocate_uars(struct mlx5_ib_dev *dev, 1764 struct mlx5_ib_ucontext *context) 1765 { 1766 struct mlx5_bfreg_info *bfregi; 1767 int i; 1768 1769 bfregi = &context->bfregi; 1770 for (i = 0; i < bfregi->num_sys_pages; i++) 1771 if (i < bfregi->num_static_sys_pages || 1772 bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX) 1773 mlx5_cmd_uar_dealloc(dev->mdev, bfregi->sys_pages[i], 1774 context->devx_uid); 1775 } 1776 1777 int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp) 1778 { 1779 int err = 0; 1780 1781 mutex_lock(&dev->lb.mutex); 1782 if (td) 1783 dev->lb.user_td++; 1784 if (qp) 1785 dev->lb.qps++; 1786 1787 if (dev->lb.user_td == 2 || 1788 dev->lb.qps == 1) { 1789 if (!dev->lb.enabled) { 1790 err = mlx5_nic_vport_update_local_lb(dev->mdev, true); 1791 dev->lb.enabled = true; 1792 } 1793 } 1794 1795 mutex_unlock(&dev->lb.mutex); 1796 1797 return err; 1798 } 1799 1800 void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp) 1801 { 1802 mutex_lock(&dev->lb.mutex); 1803 if (td) 1804 dev->lb.user_td--; 1805 if (qp) 1806 dev->lb.qps--; 1807 1808 if (dev->lb.user_td == 1 && 1809 dev->lb.qps == 0) { 1810 if (dev->lb.enabled) { 1811 mlx5_nic_vport_update_local_lb(dev->mdev, false); 1812 dev->lb.enabled = false; 1813 } 1814 } 1815 1816 mutex_unlock(&dev->lb.mutex); 1817 } 1818 1819 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn, 1820 u16 uid) 1821 { 1822 int err; 1823 1824 if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1825 return 0; 1826 1827 err = mlx5_cmd_alloc_transport_domain(dev->mdev, tdn, uid); 1828 if (err) 1829 return err; 1830 1831 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) || 1832 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) && 1833 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 1834 return err; 1835 1836 return mlx5_ib_enable_lb(dev, true, false); 1837 } 1838 1839 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn, 1840 u16 uid) 1841 { 1842 if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1843 return; 1844 1845 mlx5_cmd_dealloc_transport_domain(dev->mdev, tdn, uid); 1846 1847 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) || 1848 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) && 1849 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 1850 return; 1851 1852 mlx5_ib_disable_lb(dev, true, false); 1853 } 1854 1855 static int set_ucontext_resp(struct ib_ucontext *uctx, 1856 struct mlx5_ib_alloc_ucontext_resp *resp) 1857 { 1858 struct ib_device *ibdev = uctx->device; 1859 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1860 struct mlx5_ib_ucontext *context = to_mucontext(uctx); 1861 struct mlx5_bfreg_info *bfregi = &context->bfregi; 1862 1863 if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) { 1864 resp->dump_fill_mkey = dev->mkeys.dump_fill_mkey; 1865 resp->comp_mask |= 1866 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY; 1867 } 1868 1869 resp->qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp); 1870 if (mlx5_wc_support_get(dev->mdev)) 1871 resp->bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, 1872 log_bf_reg_size); 1873 resp->cache_line_size = cache_line_size(); 1874 resp->max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq); 1875 resp->max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq); 1876 resp->max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 1877 resp->max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 1878 resp->max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz); 1879 resp->cqe_version = context->cqe_version; 1880 resp->log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 1881 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT; 1882 resp->num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 1883 MLX5_CAP_GEN(dev->mdev, 1884 num_of_uars_per_page) : 1; 1885 resp->tot_bfregs = bfregi->lib_uar_dyn ? 0 : 1886 bfregi->total_num_bfregs - bfregi->num_dyn_bfregs; 1887 resp->num_ports = dev->num_ports; 1888 resp->cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE | 1889 MLX5_USER_CMDS_SUPP_UHW_CREATE_AH; 1890 1891 if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) { 1892 mlx5_query_min_inline(dev->mdev, &resp->eth_min_inline); 1893 resp->eth_min_inline++; 1894 } 1895 1896 if (dev->mdev->clock_info) 1897 resp->clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1); 1898 1899 /* 1900 * We don't want to expose information from the PCI bar that is located 1901 * after 4096 bytes, so if the arch only supports larger pages, let's 1902 * pretend we don't support reading the HCA's core clock. This is also 1903 * forced by mmap function. 1904 */ 1905 if (PAGE_SIZE <= 4096) { 1906 resp->comp_mask |= 1907 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET; 1908 resp->hca_core_clock_offset = 1909 offsetof(struct mlx5_init_seg, 1910 internal_timer_h) % PAGE_SIZE; 1911 } 1912 1913 if (MLX5_CAP_GEN(dev->mdev, ece_support)) 1914 resp->comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_ECE; 1915 1916 if (rt_supported(MLX5_CAP_GEN(dev->mdev, sq_ts_format)) && 1917 rt_supported(MLX5_CAP_GEN(dev->mdev, rq_ts_format)) && 1918 rt_supported(MLX5_CAP_ROCE(dev->mdev, qp_ts_format))) 1919 resp->comp_mask |= 1920 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_REAL_TIME_TS; 1921 1922 resp->num_dyn_bfregs = bfregi->num_dyn_bfregs; 1923 1924 if (MLX5_CAP_GEN(dev->mdev, drain_sigerr)) 1925 resp->comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_SQD2RTS; 1926 1927 resp->comp_mask |= 1928 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_MKEY_UPDATE_TAG; 1929 1930 return 0; 1931 } 1932 1933 static int mlx5_ib_alloc_ucontext(struct ib_ucontext *uctx, 1934 struct ib_udata *udata) 1935 { 1936 struct ib_device *ibdev = uctx->device; 1937 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1938 struct mlx5_ib_alloc_ucontext_req_v2 req = {}; 1939 struct mlx5_ib_alloc_ucontext_resp resp = {}; 1940 struct mlx5_ib_ucontext *context = to_mucontext(uctx); 1941 struct mlx5_bfreg_info *bfregi; 1942 int ver; 1943 int err; 1944 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2, 1945 max_cqe_version); 1946 bool lib_uar_4k; 1947 bool lib_uar_dyn; 1948 1949 if (!dev->ib_active) 1950 return -EAGAIN; 1951 1952 if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) 1953 ver = 0; 1954 else if (udata->inlen >= min_req_v2) 1955 ver = 2; 1956 else 1957 return -EINVAL; 1958 1959 err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req))); 1960 if (err) 1961 return err; 1962 1963 if (req.flags & ~MLX5_IB_ALLOC_UCTX_DEVX) 1964 return -EOPNOTSUPP; 1965 1966 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2) 1967 return -EOPNOTSUPP; 1968 1969 req.total_num_bfregs = ALIGN(req.total_num_bfregs, 1970 MLX5_NON_FP_BFREGS_PER_UAR); 1971 if (req.num_low_latency_bfregs > req.total_num_bfregs - 1) 1972 return -EINVAL; 1973 1974 if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) { 1975 err = mlx5_ib_devx_create(dev, true); 1976 if (err < 0) 1977 goto out_ctx; 1978 context->devx_uid = err; 1979 } 1980 1981 lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR; 1982 lib_uar_dyn = req.lib_caps & MLX5_LIB_CAP_DYN_UAR; 1983 bfregi = &context->bfregi; 1984 1985 if (lib_uar_dyn) { 1986 bfregi->lib_uar_dyn = lib_uar_dyn; 1987 goto uar_done; 1988 } 1989 1990 /* updates req->total_num_bfregs */ 1991 err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi); 1992 if (err) 1993 goto out_devx; 1994 1995 mutex_init(&bfregi->lock); 1996 bfregi->lib_uar_4k = lib_uar_4k; 1997 bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count), 1998 GFP_KERNEL); 1999 if (!bfregi->count) { 2000 err = -ENOMEM; 2001 goto out_devx; 2002 } 2003 2004 bfregi->sys_pages = kcalloc(bfregi->num_sys_pages, 2005 sizeof(*bfregi->sys_pages), 2006 GFP_KERNEL); 2007 if (!bfregi->sys_pages) { 2008 err = -ENOMEM; 2009 goto out_count; 2010 } 2011 2012 err = allocate_uars(dev, context); 2013 if (err) 2014 goto out_sys_pages; 2015 2016 uar_done: 2017 err = mlx5_ib_alloc_transport_domain(dev, &context->tdn, 2018 context->devx_uid); 2019 if (err) 2020 goto out_uars; 2021 2022 INIT_LIST_HEAD(&context->db_page_list); 2023 mutex_init(&context->db_page_mutex); 2024 2025 context->cqe_version = min_t(__u8, 2026 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version), 2027 req.max_cqe_version); 2028 2029 err = set_ucontext_resp(uctx, &resp); 2030 if (err) 2031 goto out_mdev; 2032 2033 resp.response_length = min(udata->outlen, sizeof(resp)); 2034 err = ib_copy_to_udata(udata, &resp, resp.response_length); 2035 if (err) 2036 goto out_mdev; 2037 2038 bfregi->ver = ver; 2039 bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs; 2040 context->lib_caps = req.lib_caps; 2041 print_lib_caps(dev, context->lib_caps); 2042 2043 if (mlx5_ib_lag_should_assign_affinity(dev)) { 2044 u32 port = mlx5_core_native_port_num(dev->mdev) - 1; 2045 2046 atomic_set(&context->tx_port_affinity, 2047 atomic_add_return( 2048 1, &dev->port[port].roce.tx_port_affinity)); 2049 } 2050 2051 return 0; 2052 2053 out_mdev: 2054 mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid); 2055 2056 out_uars: 2057 deallocate_uars(dev, context); 2058 2059 out_sys_pages: 2060 kfree(bfregi->sys_pages); 2061 2062 out_count: 2063 kfree(bfregi->count); 2064 2065 out_devx: 2066 if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) 2067 mlx5_ib_devx_destroy(dev, context->devx_uid); 2068 2069 out_ctx: 2070 return err; 2071 } 2072 2073 static int mlx5_ib_query_ucontext(struct ib_ucontext *ibcontext, 2074 struct uverbs_attr_bundle *attrs) 2075 { 2076 struct mlx5_ib_alloc_ucontext_resp uctx_resp = {}; 2077 int ret; 2078 2079 ret = set_ucontext_resp(ibcontext, &uctx_resp); 2080 if (ret) 2081 return ret; 2082 2083 uctx_resp.response_length = 2084 min_t(size_t, 2085 uverbs_attr_get_len(attrs, 2086 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX), 2087 sizeof(uctx_resp)); 2088 2089 ret = uverbs_copy_to_struct_or_zero(attrs, 2090 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX, 2091 &uctx_resp, 2092 sizeof(uctx_resp)); 2093 return ret; 2094 } 2095 2096 static void mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 2097 { 2098 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 2099 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 2100 struct mlx5_bfreg_info *bfregi; 2101 2102 bfregi = &context->bfregi; 2103 mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid); 2104 2105 deallocate_uars(dev, context); 2106 kfree(bfregi->sys_pages); 2107 kfree(bfregi->count); 2108 2109 if (context->devx_uid) 2110 mlx5_ib_devx_destroy(dev, context->devx_uid); 2111 } 2112 2113 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, 2114 int uar_idx) 2115 { 2116 int fw_uars_per_page; 2117 2118 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1; 2119 2120 return (dev->mdev->bar_addr >> PAGE_SHIFT) + uar_idx / fw_uars_per_page; 2121 } 2122 2123 static u64 uar_index2paddress(struct mlx5_ib_dev *dev, 2124 int uar_idx) 2125 { 2126 unsigned int fw_uars_per_page; 2127 2128 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 2129 MLX5_UARS_IN_PAGE : 1; 2130 2131 return (dev->mdev->bar_addr + (uar_idx / fw_uars_per_page) * PAGE_SIZE); 2132 } 2133 2134 static int get_command(unsigned long offset) 2135 { 2136 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 2137 } 2138 2139 static int get_arg(unsigned long offset) 2140 { 2141 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 2142 } 2143 2144 static int get_index(unsigned long offset) 2145 { 2146 return get_arg(offset); 2147 } 2148 2149 /* Index resides in an extra byte to enable larger values than 255 */ 2150 static int get_extended_index(unsigned long offset) 2151 { 2152 return get_arg(offset) | ((offset >> 16) & 0xff) << 8; 2153 } 2154 2155 2156 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 2157 { 2158 } 2159 2160 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) 2161 { 2162 switch (cmd) { 2163 case MLX5_IB_MMAP_WC_PAGE: 2164 return "WC"; 2165 case MLX5_IB_MMAP_REGULAR_PAGE: 2166 return "best effort WC"; 2167 case MLX5_IB_MMAP_NC_PAGE: 2168 return "NC"; 2169 case MLX5_IB_MMAP_DEVICE_MEM: 2170 return "Device Memory"; 2171 default: 2172 return "Unknown"; 2173 } 2174 } 2175 2176 static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev, 2177 struct vm_area_struct *vma, 2178 struct mlx5_ib_ucontext *context) 2179 { 2180 if ((vma->vm_end - vma->vm_start != PAGE_SIZE) || 2181 !(vma->vm_flags & VM_SHARED)) 2182 return -EINVAL; 2183 2184 if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1) 2185 return -EOPNOTSUPP; 2186 2187 if (vma->vm_flags & (VM_WRITE | VM_EXEC)) 2188 return -EPERM; 2189 vm_flags_clear(vma, VM_MAYWRITE); 2190 2191 if (!dev->mdev->clock_info) 2192 return -EOPNOTSUPP; 2193 2194 return vm_insert_page(vma, vma->vm_start, 2195 virt_to_page(dev->mdev->clock_info)); 2196 } 2197 2198 static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry) 2199 { 2200 struct mlx5_user_mmap_entry *mentry = to_mmmap(entry); 2201 struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device); 2202 struct mlx5_var_table *var_table = &dev->var_table; 2203 struct mlx5_ib_ucontext *context = to_mucontext(entry->ucontext); 2204 2205 switch (mentry->mmap_flag) { 2206 case MLX5_IB_MMAP_TYPE_MEMIC: 2207 case MLX5_IB_MMAP_TYPE_MEMIC_OP: 2208 mlx5_ib_dm_mmap_free(dev, mentry); 2209 break; 2210 case MLX5_IB_MMAP_TYPE_VAR: 2211 mutex_lock(&var_table->bitmap_lock); 2212 clear_bit(mentry->page_idx, var_table->bitmap); 2213 mutex_unlock(&var_table->bitmap_lock); 2214 kfree(mentry); 2215 break; 2216 case MLX5_IB_MMAP_TYPE_UAR_WC: 2217 case MLX5_IB_MMAP_TYPE_UAR_NC: 2218 mlx5_cmd_uar_dealloc(dev->mdev, mentry->page_idx, 2219 context->devx_uid); 2220 kfree(mentry); 2221 break; 2222 default: 2223 WARN_ON(true); 2224 } 2225 } 2226 2227 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, 2228 struct vm_area_struct *vma, 2229 struct mlx5_ib_ucontext *context) 2230 { 2231 struct mlx5_bfreg_info *bfregi = &context->bfregi; 2232 int err; 2233 unsigned long idx; 2234 phys_addr_t pfn; 2235 pgprot_t prot; 2236 u32 bfreg_dyn_idx = 0; 2237 u32 uar_index; 2238 int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC); 2239 int max_valid_idx = dyn_uar ? bfregi->num_sys_pages : 2240 bfregi->num_static_sys_pages; 2241 2242 if (bfregi->lib_uar_dyn) 2243 return -EINVAL; 2244 2245 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 2246 return -EINVAL; 2247 2248 if (dyn_uar) 2249 idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages; 2250 else 2251 idx = get_index(vma->vm_pgoff); 2252 2253 if (idx >= max_valid_idx) { 2254 mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n", 2255 idx, max_valid_idx); 2256 return -EINVAL; 2257 } 2258 2259 switch (cmd) { 2260 case MLX5_IB_MMAP_WC_PAGE: 2261 case MLX5_IB_MMAP_ALLOC_WC: 2262 case MLX5_IB_MMAP_REGULAR_PAGE: 2263 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */ 2264 prot = pgprot_writecombine(vma->vm_page_prot); 2265 break; 2266 case MLX5_IB_MMAP_NC_PAGE: 2267 prot = pgprot_noncached(vma->vm_page_prot); 2268 break; 2269 default: 2270 return -EINVAL; 2271 } 2272 2273 if (dyn_uar) { 2274 int uars_per_page; 2275 2276 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k); 2277 bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR); 2278 if (bfreg_dyn_idx >= bfregi->total_num_bfregs) { 2279 mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n", 2280 bfreg_dyn_idx, bfregi->total_num_bfregs); 2281 return -EINVAL; 2282 } 2283 2284 mutex_lock(&bfregi->lock); 2285 /* Fail if uar already allocated, first bfreg index of each 2286 * page holds its count. 2287 */ 2288 if (bfregi->count[bfreg_dyn_idx]) { 2289 mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx); 2290 mutex_unlock(&bfregi->lock); 2291 return -EINVAL; 2292 } 2293 2294 bfregi->count[bfreg_dyn_idx]++; 2295 mutex_unlock(&bfregi->lock); 2296 2297 err = mlx5_cmd_uar_alloc(dev->mdev, &uar_index, 2298 context->devx_uid); 2299 if (err) { 2300 mlx5_ib_warn(dev, "UAR alloc failed\n"); 2301 goto free_bfreg; 2302 } 2303 } else { 2304 uar_index = bfregi->sys_pages[idx]; 2305 } 2306 2307 pfn = uar_index2pfn(dev, uar_index); 2308 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn); 2309 2310 err = rdma_user_mmap_io(&context->ibucontext, vma, pfn, PAGE_SIZE, 2311 prot, NULL); 2312 if (err) { 2313 mlx5_ib_err(dev, 2314 "rdma_user_mmap_io failed with error=%d, mmap_cmd=%s\n", 2315 err, mmap_cmd2str(cmd)); 2316 goto err; 2317 } 2318 2319 if (dyn_uar) 2320 bfregi->sys_pages[idx] = uar_index; 2321 return 0; 2322 2323 err: 2324 if (!dyn_uar) 2325 return err; 2326 2327 mlx5_cmd_uar_dealloc(dev->mdev, idx, context->devx_uid); 2328 2329 free_bfreg: 2330 mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx); 2331 2332 return err; 2333 } 2334 2335 static unsigned long mlx5_vma_to_pgoff(struct vm_area_struct *vma) 2336 { 2337 unsigned long idx; 2338 u8 command; 2339 2340 command = get_command(vma->vm_pgoff); 2341 idx = get_extended_index(vma->vm_pgoff); 2342 2343 return (command << 16 | idx); 2344 } 2345 2346 static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev, 2347 struct vm_area_struct *vma, 2348 struct ib_ucontext *ucontext) 2349 { 2350 struct mlx5_user_mmap_entry *mentry; 2351 struct rdma_user_mmap_entry *entry; 2352 unsigned long pgoff; 2353 pgprot_t prot; 2354 phys_addr_t pfn; 2355 int ret; 2356 2357 pgoff = mlx5_vma_to_pgoff(vma); 2358 entry = rdma_user_mmap_entry_get_pgoff(ucontext, pgoff); 2359 if (!entry) 2360 return -EINVAL; 2361 2362 mentry = to_mmmap(entry); 2363 pfn = (mentry->address >> PAGE_SHIFT); 2364 if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR || 2365 mentry->mmap_flag == MLX5_IB_MMAP_TYPE_UAR_NC) 2366 prot = pgprot_noncached(vma->vm_page_prot); 2367 else 2368 prot = pgprot_writecombine(vma->vm_page_prot); 2369 ret = rdma_user_mmap_io(ucontext, vma, pfn, 2370 entry->npages * PAGE_SIZE, 2371 prot, 2372 entry); 2373 rdma_user_mmap_entry_put(&mentry->rdma_entry); 2374 return ret; 2375 } 2376 2377 static u64 mlx5_entry_to_mmap_offset(struct mlx5_user_mmap_entry *entry) 2378 { 2379 u64 cmd = (entry->rdma_entry.start_pgoff >> 16) & 0xFFFF; 2380 u64 index = entry->rdma_entry.start_pgoff & 0xFFFF; 2381 2382 return (((index >> 8) << 16) | (cmd << MLX5_IB_MMAP_CMD_SHIFT) | 2383 (index & 0xFF)) << PAGE_SHIFT; 2384 } 2385 2386 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 2387 { 2388 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 2389 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 2390 unsigned long command; 2391 phys_addr_t pfn; 2392 2393 command = get_command(vma->vm_pgoff); 2394 switch (command) { 2395 case MLX5_IB_MMAP_WC_PAGE: 2396 case MLX5_IB_MMAP_ALLOC_WC: 2397 if (!mlx5_wc_support_get(dev->mdev)) 2398 return -EPERM; 2399 fallthrough; 2400 case MLX5_IB_MMAP_NC_PAGE: 2401 case MLX5_IB_MMAP_REGULAR_PAGE: 2402 return uar_mmap(dev, command, vma, context); 2403 2404 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 2405 return -ENOSYS; 2406 2407 case MLX5_IB_MMAP_CORE_CLOCK: 2408 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 2409 return -EINVAL; 2410 2411 if (vma->vm_flags & VM_WRITE) 2412 return -EPERM; 2413 vm_flags_clear(vma, VM_MAYWRITE); 2414 2415 /* Don't expose to user-space information it shouldn't have */ 2416 if (PAGE_SIZE > 4096) 2417 return -EOPNOTSUPP; 2418 2419 pfn = (dev->mdev->iseg_base + 2420 offsetof(struct mlx5_init_seg, internal_timer_h)) >> 2421 PAGE_SHIFT; 2422 return rdma_user_mmap_io(&context->ibucontext, vma, pfn, 2423 PAGE_SIZE, 2424 pgprot_noncached(vma->vm_page_prot), 2425 NULL); 2426 case MLX5_IB_MMAP_CLOCK_INFO: 2427 return mlx5_ib_mmap_clock_info_page(dev, vma, context); 2428 2429 default: 2430 return mlx5_ib_mmap_offset(dev, vma, ibcontext); 2431 } 2432 2433 return 0; 2434 } 2435 2436 static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 2437 { 2438 struct mlx5_ib_pd *pd = to_mpd(ibpd); 2439 struct ib_device *ibdev = ibpd->device; 2440 struct mlx5_ib_alloc_pd_resp resp; 2441 int err; 2442 u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {}; 2443 u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {}; 2444 u16 uid = 0; 2445 struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context( 2446 udata, struct mlx5_ib_ucontext, ibucontext); 2447 2448 uid = context ? context->devx_uid : 0; 2449 MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD); 2450 MLX5_SET(alloc_pd_in, in, uid, uid); 2451 err = mlx5_cmd_exec_inout(to_mdev(ibdev)->mdev, alloc_pd, in, out); 2452 if (err) 2453 return err; 2454 2455 pd->pdn = MLX5_GET(alloc_pd_out, out, pd); 2456 pd->uid = uid; 2457 if (udata) { 2458 resp.pdn = pd->pdn; 2459 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 2460 mlx5_cmd_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn, uid); 2461 return -EFAULT; 2462 } 2463 } 2464 2465 return 0; 2466 } 2467 2468 static int mlx5_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 2469 { 2470 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 2471 struct mlx5_ib_pd *mpd = to_mpd(pd); 2472 2473 return mlx5_cmd_dealloc_pd(mdev->mdev, mpd->pdn, mpd->uid); 2474 } 2475 2476 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 2477 { 2478 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 2479 struct mlx5_ib_qp *mqp = to_mqp(ibqp); 2480 int err; 2481 u16 uid; 2482 2483 uid = ibqp->pd ? 2484 to_mpd(ibqp->pd)->uid : 0; 2485 2486 if (mqp->flags & IB_QP_CREATE_SOURCE_QPN) { 2487 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n"); 2488 return -EOPNOTSUPP; 2489 } 2490 2491 err = mlx5_cmd_attach_mcg(dev->mdev, gid, ibqp->qp_num, uid); 2492 if (err) 2493 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 2494 ibqp->qp_num, gid->raw); 2495 2496 return err; 2497 } 2498 2499 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 2500 { 2501 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 2502 int err; 2503 u16 uid; 2504 2505 uid = ibqp->pd ? 2506 to_mpd(ibqp->pd)->uid : 0; 2507 err = mlx5_cmd_detach_mcg(dev->mdev, gid, ibqp->qp_num, uid); 2508 if (err) 2509 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 2510 ibqp->qp_num, gid->raw); 2511 2512 return err; 2513 } 2514 2515 static int init_node_data(struct mlx5_ib_dev *dev) 2516 { 2517 int err; 2518 2519 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc); 2520 if (err) 2521 return err; 2522 2523 dev->mdev->rev_id = dev->mdev->pdev->revision; 2524 2525 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid); 2526 } 2527 2528 static ssize_t fw_pages_show(struct device *device, 2529 struct device_attribute *attr, char *buf) 2530 { 2531 struct mlx5_ib_dev *dev = 2532 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2533 2534 return sysfs_emit(buf, "%d\n", dev->mdev->priv.fw_pages); 2535 } 2536 static DEVICE_ATTR_RO(fw_pages); 2537 2538 static ssize_t reg_pages_show(struct device *device, 2539 struct device_attribute *attr, char *buf) 2540 { 2541 struct mlx5_ib_dev *dev = 2542 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2543 2544 return sysfs_emit(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages)); 2545 } 2546 static DEVICE_ATTR_RO(reg_pages); 2547 2548 static ssize_t hca_type_show(struct device *device, 2549 struct device_attribute *attr, char *buf) 2550 { 2551 struct mlx5_ib_dev *dev = 2552 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2553 2554 return sysfs_emit(buf, "MT%d\n", dev->mdev->pdev->device); 2555 } 2556 static DEVICE_ATTR_RO(hca_type); 2557 2558 static ssize_t hw_rev_show(struct device *device, 2559 struct device_attribute *attr, char *buf) 2560 { 2561 struct mlx5_ib_dev *dev = 2562 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2563 2564 return sysfs_emit(buf, "%x\n", dev->mdev->rev_id); 2565 } 2566 static DEVICE_ATTR_RO(hw_rev); 2567 2568 static ssize_t board_id_show(struct device *device, 2569 struct device_attribute *attr, char *buf) 2570 { 2571 struct mlx5_ib_dev *dev = 2572 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 2573 2574 return sysfs_emit(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 2575 dev->mdev->board_id); 2576 } 2577 static DEVICE_ATTR_RO(board_id); 2578 2579 static struct attribute *mlx5_class_attributes[] = { 2580 &dev_attr_hw_rev.attr, 2581 &dev_attr_hca_type.attr, 2582 &dev_attr_board_id.attr, 2583 &dev_attr_fw_pages.attr, 2584 &dev_attr_reg_pages.attr, 2585 NULL, 2586 }; 2587 2588 static const struct attribute_group mlx5_attr_group = { 2589 .attrs = mlx5_class_attributes, 2590 }; 2591 2592 static void pkey_change_handler(struct work_struct *work) 2593 { 2594 struct mlx5_ib_port_resources *ports = 2595 container_of(work, struct mlx5_ib_port_resources, 2596 pkey_change_work); 2597 2598 if (!ports->gsi) 2599 /* 2600 * We got this event before device was fully configured 2601 * and MAD registration code wasn't called/finished yet. 2602 */ 2603 return; 2604 2605 mlx5_ib_gsi_pkey_change(ports->gsi); 2606 } 2607 2608 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev) 2609 { 2610 struct mlx5_ib_qp *mqp; 2611 struct mlx5_ib_cq *send_mcq, *recv_mcq; 2612 struct mlx5_core_cq *mcq; 2613 struct list_head cq_armed_list; 2614 unsigned long flags_qp; 2615 unsigned long flags_cq; 2616 unsigned long flags; 2617 2618 INIT_LIST_HEAD(&cq_armed_list); 2619 2620 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 2621 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 2622 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 2623 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 2624 if (mqp->sq.tail != mqp->sq.head) { 2625 send_mcq = to_mcq(mqp->ibqp.send_cq); 2626 spin_lock_irqsave(&send_mcq->lock, flags_cq); 2627 if (send_mcq->mcq.comp && 2628 mqp->ibqp.send_cq->comp_handler) { 2629 if (!send_mcq->mcq.reset_notify_added) { 2630 send_mcq->mcq.reset_notify_added = 1; 2631 list_add_tail(&send_mcq->mcq.reset_notify, 2632 &cq_armed_list); 2633 } 2634 } 2635 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 2636 } 2637 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 2638 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 2639 /* no handling is needed for SRQ */ 2640 if (!mqp->ibqp.srq) { 2641 if (mqp->rq.tail != mqp->rq.head) { 2642 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 2643 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 2644 if (recv_mcq->mcq.comp && 2645 mqp->ibqp.recv_cq->comp_handler) { 2646 if (!recv_mcq->mcq.reset_notify_added) { 2647 recv_mcq->mcq.reset_notify_added = 1; 2648 list_add_tail(&recv_mcq->mcq.reset_notify, 2649 &cq_armed_list); 2650 } 2651 } 2652 spin_unlock_irqrestore(&recv_mcq->lock, 2653 flags_cq); 2654 } 2655 } 2656 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 2657 } 2658 /*At that point all inflight post send were put to be executed as of we 2659 * lock/unlock above locks Now need to arm all involved CQs. 2660 */ 2661 list_for_each_entry(mcq, &cq_armed_list, reset_notify) { 2662 mcq->comp(mcq, NULL); 2663 } 2664 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 2665 } 2666 2667 static void delay_drop_handler(struct work_struct *work) 2668 { 2669 int err; 2670 struct mlx5_ib_delay_drop *delay_drop = 2671 container_of(work, struct mlx5_ib_delay_drop, 2672 delay_drop_work); 2673 2674 atomic_inc(&delay_drop->events_cnt); 2675 2676 mutex_lock(&delay_drop->lock); 2677 err = mlx5_core_set_delay_drop(delay_drop->dev, delay_drop->timeout); 2678 if (err) { 2679 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n", 2680 delay_drop->timeout); 2681 delay_drop->activate = false; 2682 } 2683 mutex_unlock(&delay_drop->lock); 2684 } 2685 2686 static void handle_general_event(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe, 2687 struct ib_event *ibev) 2688 { 2689 u32 port = (eqe->data.port.port >> 4) & 0xf; 2690 2691 switch (eqe->sub_type) { 2692 case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT: 2693 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == 2694 IB_LINK_LAYER_ETHERNET) 2695 schedule_work(&ibdev->delay_drop.delay_drop_work); 2696 break; 2697 default: /* do nothing */ 2698 return; 2699 } 2700 } 2701 2702 static int handle_port_change(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe, 2703 struct ib_event *ibev) 2704 { 2705 u32 port = (eqe->data.port.port >> 4) & 0xf; 2706 2707 ibev->element.port_num = port; 2708 2709 switch (eqe->sub_type) { 2710 case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: 2711 case MLX5_PORT_CHANGE_SUBTYPE_DOWN: 2712 case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: 2713 /* In RoCE, port up/down events are handled in 2714 * mlx5_netdev_event(). 2715 */ 2716 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == 2717 IB_LINK_LAYER_ETHERNET) 2718 return -EINVAL; 2719 2720 ibev->event = (eqe->sub_type == MLX5_PORT_CHANGE_SUBTYPE_ACTIVE) ? 2721 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 2722 break; 2723 2724 case MLX5_PORT_CHANGE_SUBTYPE_LID: 2725 ibev->event = IB_EVENT_LID_CHANGE; 2726 break; 2727 2728 case MLX5_PORT_CHANGE_SUBTYPE_PKEY: 2729 ibev->event = IB_EVENT_PKEY_CHANGE; 2730 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work); 2731 break; 2732 2733 case MLX5_PORT_CHANGE_SUBTYPE_GUID: 2734 ibev->event = IB_EVENT_GID_CHANGE; 2735 break; 2736 2737 case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: 2738 ibev->event = IB_EVENT_CLIENT_REREGISTER; 2739 break; 2740 default: 2741 return -EINVAL; 2742 } 2743 2744 return 0; 2745 } 2746 2747 static void mlx5_ib_handle_event(struct work_struct *_work) 2748 { 2749 struct mlx5_ib_event_work *work = 2750 container_of(_work, struct mlx5_ib_event_work, work); 2751 struct mlx5_ib_dev *ibdev; 2752 struct ib_event ibev; 2753 bool fatal = false; 2754 2755 if (work->is_slave) { 2756 ibdev = mlx5_ib_get_ibdev_from_mpi(work->mpi); 2757 if (!ibdev) 2758 goto out; 2759 } else { 2760 ibdev = work->dev; 2761 } 2762 2763 switch (work->event) { 2764 case MLX5_DEV_EVENT_SYS_ERROR: 2765 ibev.event = IB_EVENT_DEVICE_FATAL; 2766 mlx5_ib_handle_internal_error(ibdev); 2767 ibev.element.port_num = (u8)(unsigned long)work->param; 2768 fatal = true; 2769 break; 2770 case MLX5_EVENT_TYPE_PORT_CHANGE: 2771 if (handle_port_change(ibdev, work->param, &ibev)) 2772 goto out; 2773 break; 2774 case MLX5_EVENT_TYPE_GENERAL_EVENT: 2775 handle_general_event(ibdev, work->param, &ibev); 2776 fallthrough; 2777 default: 2778 goto out; 2779 } 2780 2781 ibev.device = &ibdev->ib_dev; 2782 2783 if (!rdma_is_port_valid(&ibdev->ib_dev, ibev.element.port_num)) { 2784 mlx5_ib_warn(ibdev, "warning: event on port %d\n", ibev.element.port_num); 2785 goto out; 2786 } 2787 2788 if (ibdev->ib_active) 2789 ib_dispatch_event(&ibev); 2790 2791 if (fatal) 2792 ibdev->ib_active = false; 2793 out: 2794 kfree(work); 2795 } 2796 2797 static int mlx5_ib_event(struct notifier_block *nb, 2798 unsigned long event, void *param) 2799 { 2800 struct mlx5_ib_event_work *work; 2801 2802 work = kmalloc(sizeof(*work), GFP_ATOMIC); 2803 if (!work) 2804 return NOTIFY_DONE; 2805 2806 INIT_WORK(&work->work, mlx5_ib_handle_event); 2807 work->dev = container_of(nb, struct mlx5_ib_dev, mdev_events); 2808 work->is_slave = false; 2809 work->param = param; 2810 work->event = event; 2811 2812 queue_work(mlx5_ib_event_wq, &work->work); 2813 2814 return NOTIFY_OK; 2815 } 2816 2817 static int mlx5_ib_event_slave_port(struct notifier_block *nb, 2818 unsigned long event, void *param) 2819 { 2820 struct mlx5_ib_event_work *work; 2821 2822 work = kmalloc(sizeof(*work), GFP_ATOMIC); 2823 if (!work) 2824 return NOTIFY_DONE; 2825 2826 INIT_WORK(&work->work, mlx5_ib_handle_event); 2827 work->mpi = container_of(nb, struct mlx5_ib_multiport_info, mdev_events); 2828 work->is_slave = true; 2829 work->param = param; 2830 work->event = event; 2831 queue_work(mlx5_ib_event_wq, &work->work); 2832 2833 return NOTIFY_OK; 2834 } 2835 2836 static int mlx5_ib_get_plane_num(struct mlx5_core_dev *mdev, u8 *num_plane) 2837 { 2838 struct mlx5_hca_vport_context vport_ctx; 2839 int err; 2840 2841 *num_plane = 0; 2842 if (!MLX5_CAP_GEN(mdev, ib_virt) || !MLX5_CAP_GEN_2(mdev, multiplane)) 2843 return 0; 2844 2845 err = mlx5_query_hca_vport_context(mdev, 0, 1, 0, &vport_ctx); 2846 if (err) 2847 return err; 2848 2849 *num_plane = vport_ctx.num_plane; 2850 return 0; 2851 } 2852 2853 static int set_has_smi_cap(struct mlx5_ib_dev *dev) 2854 { 2855 struct mlx5_hca_vport_context vport_ctx; 2856 int err; 2857 int port; 2858 2859 if (MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_IB) 2860 return 0; 2861 2862 for (port = 1; port <= dev->num_ports; port++) { 2863 if (dev->num_plane) { 2864 dev->port_caps[port - 1].has_smi = false; 2865 continue; 2866 } else if (!MLX5_CAP_GEN(dev->mdev, ib_virt) || 2867 dev->ib_dev.type == RDMA_DEVICE_TYPE_SMI) { 2868 dev->port_caps[port - 1].has_smi = true; 2869 continue; 2870 } 2871 2872 err = mlx5_query_hca_vport_context(dev->mdev, 0, port, 0, 2873 &vport_ctx); 2874 if (err) { 2875 mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n", 2876 port, err); 2877 return err; 2878 } 2879 dev->port_caps[port - 1].has_smi = vport_ctx.has_smi; 2880 } 2881 2882 return 0; 2883 } 2884 2885 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 2886 { 2887 unsigned int port; 2888 2889 rdma_for_each_port (&dev->ib_dev, port) 2890 mlx5_query_ext_port_caps(dev, port); 2891 } 2892 2893 static u8 mlx5_get_umr_fence(u8 umr_fence_cap) 2894 { 2895 switch (umr_fence_cap) { 2896 case MLX5_CAP_UMR_FENCE_NONE: 2897 return MLX5_FENCE_MODE_NONE; 2898 case MLX5_CAP_UMR_FENCE_SMALL: 2899 return MLX5_FENCE_MODE_INITIATOR_SMALL; 2900 default: 2901 return MLX5_FENCE_MODE_STRONG_ORDERING; 2902 } 2903 } 2904 2905 int mlx5_ib_dev_res_cq_init(struct mlx5_ib_dev *dev) 2906 { 2907 struct mlx5_ib_resources *devr = &dev->devr; 2908 struct ib_cq_init_attr cq_attr = {.cqe = 1}; 2909 struct ib_device *ibdev; 2910 struct ib_pd *pd; 2911 struct ib_cq *cq; 2912 int ret = 0; 2913 2914 2915 /* 2916 * devr->c0 is set once, never changed until device unload. 2917 * Avoid taking the mutex if initialization is already done. 2918 */ 2919 if (devr->c0) 2920 return 0; 2921 2922 mutex_lock(&devr->cq_lock); 2923 if (devr->c0) 2924 goto unlock; 2925 2926 ibdev = &dev->ib_dev; 2927 pd = ib_alloc_pd(ibdev, 0); 2928 if (IS_ERR(pd)) { 2929 ret = PTR_ERR(pd); 2930 mlx5_ib_err(dev, "Couldn't allocate PD for res init, err=%d\n", ret); 2931 goto unlock; 2932 } 2933 2934 cq = ib_create_cq(ibdev, NULL, NULL, NULL, &cq_attr); 2935 if (IS_ERR(cq)) { 2936 ret = PTR_ERR(cq); 2937 mlx5_ib_err(dev, "Couldn't create CQ for res init, err=%d\n", ret); 2938 ib_dealloc_pd(pd); 2939 goto unlock; 2940 } 2941 2942 devr->p0 = pd; 2943 devr->c0 = cq; 2944 2945 unlock: 2946 mutex_unlock(&devr->cq_lock); 2947 return ret; 2948 } 2949 2950 int mlx5_ib_dev_res_srq_init(struct mlx5_ib_dev *dev) 2951 { 2952 struct mlx5_ib_resources *devr = &dev->devr; 2953 struct ib_srq_init_attr attr; 2954 struct ib_srq *s0, *s1; 2955 int ret = 0; 2956 2957 /* 2958 * devr->s1 is set once, never changed until device unload. 2959 * Avoid taking the mutex if initialization is already done. 2960 */ 2961 if (devr->s1) 2962 return 0; 2963 2964 mutex_lock(&devr->srq_lock); 2965 if (devr->s1) 2966 goto unlock; 2967 2968 ret = mlx5_ib_dev_res_cq_init(dev); 2969 if (ret) 2970 goto unlock; 2971 2972 memset(&attr, 0, sizeof(attr)); 2973 attr.attr.max_sge = 1; 2974 attr.attr.max_wr = 1; 2975 attr.srq_type = IB_SRQT_XRC; 2976 attr.ext.cq = devr->c0; 2977 2978 s0 = ib_create_srq(devr->p0, &attr); 2979 if (IS_ERR(s0)) { 2980 ret = PTR_ERR(s0); 2981 mlx5_ib_err(dev, "Couldn't create SRQ 0 for res init, err=%d\n", ret); 2982 goto unlock; 2983 } 2984 2985 memset(&attr, 0, sizeof(attr)); 2986 attr.attr.max_sge = 1; 2987 attr.attr.max_wr = 1; 2988 attr.srq_type = IB_SRQT_BASIC; 2989 2990 s1 = ib_create_srq(devr->p0, &attr); 2991 if (IS_ERR(s1)) { 2992 ret = PTR_ERR(s1); 2993 mlx5_ib_err(dev, "Couldn't create SRQ 1 for res init, err=%d\n", ret); 2994 ib_destroy_srq(s0); 2995 } 2996 2997 devr->s0 = s0; 2998 devr->s1 = s1; 2999 3000 unlock: 3001 mutex_unlock(&devr->srq_lock); 3002 return ret; 3003 } 3004 3005 static int mlx5_ib_dev_res_init(struct mlx5_ib_dev *dev) 3006 { 3007 struct mlx5_ib_resources *devr = &dev->devr; 3008 int ret; 3009 3010 if (!MLX5_CAP_GEN(dev->mdev, xrc)) 3011 return -EOPNOTSUPP; 3012 3013 ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn0, 0); 3014 if (ret) 3015 return ret; 3016 3017 ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn1, 0); 3018 if (ret) { 3019 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0); 3020 return ret; 3021 } 3022 3023 mutex_init(&devr->cq_lock); 3024 mutex_init(&devr->srq_lock); 3025 3026 return 0; 3027 } 3028 3029 static void mlx5_ib_dev_res_cleanup(struct mlx5_ib_dev *dev) 3030 { 3031 struct mlx5_ib_resources *devr = &dev->devr; 3032 3033 /* After s0/s1 init, they are not unset during the device lifetime. */ 3034 if (devr->s1) { 3035 ib_destroy_srq(devr->s1); 3036 ib_destroy_srq(devr->s0); 3037 } 3038 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0); 3039 mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0); 3040 /* After p0/c0 init, they are not unset during the device lifetime. */ 3041 if (devr->c0) { 3042 ib_destroy_cq(devr->c0); 3043 ib_dealloc_pd(devr->p0); 3044 } 3045 mutex_destroy(&devr->cq_lock); 3046 mutex_destroy(&devr->srq_lock); 3047 } 3048 3049 static int 3050 mlx5_ib_create_data_direct_resources(struct mlx5_ib_dev *dev) 3051 { 3052 int inlen = MLX5_ST_SZ_BYTES(create_mkey_in); 3053 struct mlx5_core_dev *mdev = dev->mdev; 3054 void *mkc; 3055 u32 mkey; 3056 u32 pdn; 3057 u32 *in; 3058 int err; 3059 3060 err = mlx5_core_alloc_pd(mdev, &pdn); 3061 if (err) 3062 return err; 3063 3064 in = kvzalloc(inlen, GFP_KERNEL); 3065 if (!in) { 3066 err = -ENOMEM; 3067 goto err; 3068 } 3069 3070 MLX5_SET(create_mkey_in, in, data_direct, 1); 3071 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 3072 MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_PA); 3073 MLX5_SET(mkc, mkc, lw, 1); 3074 MLX5_SET(mkc, mkc, lr, 1); 3075 MLX5_SET(mkc, mkc, rw, 1); 3076 MLX5_SET(mkc, mkc, rr, 1); 3077 MLX5_SET(mkc, mkc, a, 1); 3078 MLX5_SET(mkc, mkc, pd, pdn); 3079 MLX5_SET(mkc, mkc, length64, 1); 3080 MLX5_SET(mkc, mkc, qpn, 0xffffff); 3081 err = mlx5_core_create_mkey(mdev, &mkey, in, inlen); 3082 kvfree(in); 3083 if (err) 3084 goto err; 3085 3086 dev->ddr.mkey = mkey; 3087 dev->ddr.pdn = pdn; 3088 return 0; 3089 3090 err: 3091 mlx5_core_dealloc_pd(mdev, pdn); 3092 return err; 3093 } 3094 3095 static void 3096 mlx5_ib_free_data_direct_resources(struct mlx5_ib_dev *dev) 3097 { 3098 mlx5_core_destroy_mkey(dev->mdev, dev->ddr.mkey); 3099 mlx5_core_dealloc_pd(dev->mdev, dev->ddr.pdn); 3100 } 3101 3102 static u32 get_core_cap_flags(struct ib_device *ibdev, 3103 struct mlx5_hca_vport_context *rep) 3104 { 3105 struct mlx5_ib_dev *dev = to_mdev(ibdev); 3106 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1); 3107 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type); 3108 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version); 3109 bool raw_support = !mlx5_core_mp_enabled(dev->mdev); 3110 u32 ret = 0; 3111 3112 if (rep->grh_required) 3113 ret |= RDMA_CORE_CAP_IB_GRH_REQUIRED; 3114 3115 if (dev->num_plane) 3116 return ret | RDMA_CORE_CAP_PROT_IB | RDMA_CORE_CAP_IB_MAD | 3117 RDMA_CORE_CAP_IB_CM | RDMA_CORE_CAP_IB_SA | 3118 RDMA_CORE_CAP_AF_IB; 3119 else if (ibdev->type == RDMA_DEVICE_TYPE_SMI) 3120 return ret | RDMA_CORE_CAP_IB_MAD | RDMA_CORE_CAP_IB_SMI; 3121 3122 if (ll == IB_LINK_LAYER_INFINIBAND) 3123 return ret | RDMA_CORE_PORT_IBA_IB; 3124 3125 if (raw_support) 3126 ret |= RDMA_CORE_PORT_RAW_PACKET; 3127 3128 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP)) 3129 return ret; 3130 3131 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP)) 3132 return ret; 3133 3134 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP) 3135 ret |= RDMA_CORE_PORT_IBA_ROCE; 3136 3137 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP) 3138 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 3139 3140 return ret; 3141 } 3142 3143 static int mlx5_port_immutable(struct ib_device *ibdev, u32 port_num, 3144 struct ib_port_immutable *immutable) 3145 { 3146 struct ib_port_attr attr; 3147 struct mlx5_ib_dev *dev = to_mdev(ibdev); 3148 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num); 3149 struct mlx5_hca_vport_context rep = {0}; 3150 int err; 3151 3152 err = ib_query_port(ibdev, port_num, &attr); 3153 if (err) 3154 return err; 3155 3156 if (ll == IB_LINK_LAYER_INFINIBAND) { 3157 if (ibdev->type == RDMA_DEVICE_TYPE_SMI) 3158 port_num = smi_to_native_portnum(dev, port_num); 3159 3160 err = mlx5_query_hca_vport_context(dev->mdev, 0, port_num, 0, 3161 &rep); 3162 if (err) 3163 return err; 3164 } 3165 3166 immutable->pkey_tbl_len = attr.pkey_tbl_len; 3167 immutable->gid_tbl_len = attr.gid_tbl_len; 3168 immutable->core_cap_flags = get_core_cap_flags(ibdev, &rep); 3169 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 3170 3171 return 0; 3172 } 3173 3174 static int mlx5_port_rep_immutable(struct ib_device *ibdev, u32 port_num, 3175 struct ib_port_immutable *immutable) 3176 { 3177 struct ib_port_attr attr; 3178 int err; 3179 3180 immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET; 3181 3182 err = ib_query_port(ibdev, port_num, &attr); 3183 if (err) 3184 return err; 3185 3186 immutable->pkey_tbl_len = attr.pkey_tbl_len; 3187 immutable->gid_tbl_len = attr.gid_tbl_len; 3188 immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET; 3189 3190 return 0; 3191 } 3192 3193 static void get_dev_fw_str(struct ib_device *ibdev, char *str) 3194 { 3195 struct mlx5_ib_dev *dev = 3196 container_of(ibdev, struct mlx5_ib_dev, ib_dev); 3197 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d", 3198 fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev), 3199 fw_rev_sub(dev->mdev)); 3200 } 3201 3202 static int lag_event(struct notifier_block *nb, unsigned long event, void *data) 3203 { 3204 struct mlx5_ib_dev *dev = container_of(nb, struct mlx5_ib_dev, 3205 lag_events); 3206 struct mlx5_core_dev *mdev = dev->mdev; 3207 struct ib_device *ibdev = &dev->ib_dev; 3208 struct net_device *old_ndev = NULL; 3209 struct mlx5_ib_port *port; 3210 struct net_device *ndev; 3211 u32 portnum = 0; 3212 int ret = 0; 3213 int i; 3214 3215 switch (event) { 3216 case MLX5_DRIVER_EVENT_ACTIVE_BACKUP_LAG_CHANGE_LOWERSTATE: 3217 ndev = data; 3218 if (ndev) { 3219 if (!mlx5_lag_is_roce(mdev)) { 3220 // sriov lag 3221 for (i = 0; i < dev->num_ports; i++) { 3222 port = &dev->port[i]; 3223 if (port->rep && port->rep->vport == 3224 MLX5_VPORT_UPLINK) { 3225 portnum = i; 3226 break; 3227 } 3228 } 3229 } 3230 old_ndev = ib_device_get_netdev(ibdev, portnum + 1); 3231 ret = ib_device_set_netdev(ibdev, ndev, portnum + 1); 3232 if (ret) 3233 goto out; 3234 3235 if (old_ndev) 3236 roce_del_all_netdev_gids(ibdev, portnum + 1, 3237 old_ndev); 3238 rdma_roce_rescan_port(ibdev, portnum + 1); 3239 } 3240 break; 3241 default: 3242 return NOTIFY_DONE; 3243 } 3244 3245 out: 3246 dev_put(old_ndev); 3247 return notifier_from_errno(ret); 3248 } 3249 3250 static void mlx5e_lag_event_register(struct mlx5_ib_dev *dev) 3251 { 3252 dev->lag_events.notifier_call = lag_event; 3253 blocking_notifier_chain_register(&dev->mdev->priv.lag_nh, 3254 &dev->lag_events); 3255 } 3256 3257 static void mlx5e_lag_event_unregister(struct mlx5_ib_dev *dev) 3258 { 3259 blocking_notifier_chain_unregister(&dev->mdev->priv.lag_nh, 3260 &dev->lag_events); 3261 } 3262 3263 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev) 3264 { 3265 struct mlx5_core_dev *mdev = dev->mdev; 3266 struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev, 3267 MLX5_FLOW_NAMESPACE_LAG); 3268 struct mlx5_flow_table *ft; 3269 int err; 3270 3271 if (!ns || !mlx5_lag_is_active(mdev)) 3272 return 0; 3273 3274 err = mlx5_cmd_create_vport_lag(mdev); 3275 if (err) 3276 return err; 3277 3278 ft = mlx5_create_lag_demux_flow_table(ns, 0, 0); 3279 if (IS_ERR(ft)) { 3280 err = PTR_ERR(ft); 3281 goto err_destroy_vport_lag; 3282 } 3283 3284 mlx5e_lag_event_register(dev); 3285 dev->flow_db->lag_demux_ft = ft; 3286 dev->lag_ports = mlx5_lag_get_num_ports(mdev); 3287 dev->lag_active = true; 3288 return 0; 3289 3290 err_destroy_vport_lag: 3291 mlx5_cmd_destroy_vport_lag(mdev); 3292 return err; 3293 } 3294 3295 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev) 3296 { 3297 struct mlx5_core_dev *mdev = dev->mdev; 3298 3299 if (dev->lag_active) { 3300 dev->lag_active = false; 3301 3302 mlx5e_lag_event_unregister(dev); 3303 mlx5_destroy_flow_table(dev->flow_db->lag_demux_ft); 3304 dev->flow_db->lag_demux_ft = NULL; 3305 3306 mlx5_cmd_destroy_vport_lag(mdev); 3307 } 3308 } 3309 3310 static void mlx5_netdev_notifier_register(struct mlx5_roce *roce, 3311 struct net_device *netdev) 3312 { 3313 int err; 3314 3315 if (roce->tracking_netdev) 3316 return; 3317 roce->tracking_netdev = netdev; 3318 roce->nb.notifier_call = mlx5_netdev_event; 3319 err = register_netdevice_notifier_dev_net(netdev, &roce->nb, &roce->nn); 3320 WARN_ON(err); 3321 } 3322 3323 static void mlx5_netdev_notifier_unregister(struct mlx5_roce *roce) 3324 { 3325 if (!roce->tracking_netdev) 3326 return; 3327 unregister_netdevice_notifier_dev_net(roce->tracking_netdev, &roce->nb, 3328 &roce->nn); 3329 roce->tracking_netdev = NULL; 3330 } 3331 3332 static int mlx5e_mdev_notifier_event(struct notifier_block *nb, 3333 unsigned long event, void *data) 3334 { 3335 struct mlx5_roce *roce = container_of(nb, struct mlx5_roce, mdev_nb); 3336 struct net_device *netdev = data; 3337 3338 switch (event) { 3339 case MLX5_DRIVER_EVENT_UPLINK_NETDEV: 3340 if (netdev) 3341 mlx5_netdev_notifier_register(roce, netdev); 3342 else 3343 mlx5_netdev_notifier_unregister(roce); 3344 break; 3345 default: 3346 return NOTIFY_DONE; 3347 } 3348 3349 return NOTIFY_OK; 3350 } 3351 3352 static void mlx5_mdev_netdev_track(struct mlx5_ib_dev *dev, u32 port_num) 3353 { 3354 struct mlx5_roce *roce = &dev->port[port_num].roce; 3355 3356 roce->mdev_nb.notifier_call = mlx5e_mdev_notifier_event; 3357 mlx5_blocking_notifier_register(dev->mdev, &roce->mdev_nb); 3358 mlx5_core_uplink_netdev_event_replay(dev->mdev); 3359 } 3360 3361 static void mlx5_mdev_netdev_untrack(struct mlx5_ib_dev *dev, u32 port_num) 3362 { 3363 struct mlx5_roce *roce = &dev->port[port_num].roce; 3364 3365 mlx5_blocking_notifier_unregister(dev->mdev, &roce->mdev_nb); 3366 mlx5_netdev_notifier_unregister(roce); 3367 } 3368 3369 static int mlx5_enable_eth(struct mlx5_ib_dev *dev) 3370 { 3371 int err; 3372 3373 if (!dev->is_rep && dev->profile != &raw_eth_profile) { 3374 err = mlx5_nic_vport_enable_roce(dev->mdev); 3375 if (err) 3376 return err; 3377 } 3378 3379 err = mlx5_eth_lag_init(dev); 3380 if (err) 3381 goto err_disable_roce; 3382 3383 return 0; 3384 3385 err_disable_roce: 3386 if (!dev->is_rep && dev->profile != &raw_eth_profile) 3387 mlx5_nic_vport_disable_roce(dev->mdev); 3388 3389 return err; 3390 } 3391 3392 static void mlx5_disable_eth(struct mlx5_ib_dev *dev) 3393 { 3394 mlx5_eth_lag_cleanup(dev); 3395 if (!dev->is_rep && dev->profile != &raw_eth_profile) 3396 mlx5_nic_vport_disable_roce(dev->mdev); 3397 } 3398 3399 static int mlx5_ib_rn_get_params(struct ib_device *device, u32 port_num, 3400 enum rdma_netdev_t type, 3401 struct rdma_netdev_alloc_params *params) 3402 { 3403 if (type != RDMA_NETDEV_IPOIB) 3404 return -EOPNOTSUPP; 3405 3406 return mlx5_rdma_rn_get_params(to_mdev(device)->mdev, device, params); 3407 } 3408 3409 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf, 3410 size_t count, loff_t *pos) 3411 { 3412 struct mlx5_ib_delay_drop *delay_drop = filp->private_data; 3413 char lbuf[20]; 3414 int len; 3415 3416 len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout); 3417 return simple_read_from_buffer(buf, count, pos, lbuf, len); 3418 } 3419 3420 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf, 3421 size_t count, loff_t *pos) 3422 { 3423 struct mlx5_ib_delay_drop *delay_drop = filp->private_data; 3424 u32 timeout; 3425 u32 var; 3426 3427 if (kstrtouint_from_user(buf, count, 0, &var)) 3428 return -EFAULT; 3429 3430 timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 3431 1000); 3432 if (timeout != var) 3433 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n", 3434 timeout); 3435 3436 delay_drop->timeout = timeout; 3437 3438 return count; 3439 } 3440 3441 static const struct file_operations fops_delay_drop_timeout = { 3442 .owner = THIS_MODULE, 3443 .open = simple_open, 3444 .write = delay_drop_timeout_write, 3445 .read = delay_drop_timeout_read, 3446 }; 3447 3448 static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev, 3449 struct mlx5_ib_multiport_info *mpi) 3450 { 3451 u32 port_num = mlx5_core_native_port_num(mpi->mdev) - 1; 3452 struct mlx5_ib_port *port = &ibdev->port[port_num]; 3453 int comps; 3454 int err; 3455 int i; 3456 3457 lockdep_assert_held(&mlx5_ib_multiport_mutex); 3458 3459 mlx5_core_mp_event_replay(ibdev->mdev, 3460 MLX5_DRIVER_EVENT_AFFILIATION_REMOVED, 3461 NULL); 3462 mlx5_core_mp_event_replay(mpi->mdev, 3463 MLX5_DRIVER_EVENT_AFFILIATION_REMOVED, 3464 NULL); 3465 3466 mlx5_ib_cleanup_cong_debugfs(ibdev, port_num); 3467 3468 spin_lock(&port->mp.mpi_lock); 3469 if (!mpi->ibdev) { 3470 spin_unlock(&port->mp.mpi_lock); 3471 return; 3472 } 3473 3474 mpi->ibdev = NULL; 3475 3476 spin_unlock(&port->mp.mpi_lock); 3477 if (mpi->mdev_events.notifier_call) 3478 mlx5_notifier_unregister(mpi->mdev, &mpi->mdev_events); 3479 mpi->mdev_events.notifier_call = NULL; 3480 mlx5_mdev_netdev_untrack(ibdev, port_num); 3481 spin_lock(&port->mp.mpi_lock); 3482 3483 comps = mpi->mdev_refcnt; 3484 if (comps) { 3485 mpi->unaffiliate = true; 3486 init_completion(&mpi->unref_comp); 3487 spin_unlock(&port->mp.mpi_lock); 3488 3489 for (i = 0; i < comps; i++) 3490 wait_for_completion(&mpi->unref_comp); 3491 3492 spin_lock(&port->mp.mpi_lock); 3493 mpi->unaffiliate = false; 3494 } 3495 3496 port->mp.mpi = NULL; 3497 3498 spin_unlock(&port->mp.mpi_lock); 3499 3500 err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev); 3501 3502 mlx5_ib_dbg(ibdev, "unaffiliated port %u\n", port_num + 1); 3503 /* Log an error, still needed to cleanup the pointers and add 3504 * it back to the list. 3505 */ 3506 if (err) 3507 mlx5_ib_err(ibdev, "Failed to unaffiliate port %u\n", 3508 port_num + 1); 3509 3510 ibdev->port[port_num].roce.last_port_state = IB_PORT_DOWN; 3511 } 3512 3513 static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev, 3514 struct mlx5_ib_multiport_info *mpi) 3515 { 3516 u32 port_num = mlx5_core_native_port_num(mpi->mdev) - 1; 3517 u64 key; 3518 int err; 3519 3520 lockdep_assert_held(&mlx5_ib_multiport_mutex); 3521 3522 spin_lock(&ibdev->port[port_num].mp.mpi_lock); 3523 if (ibdev->port[port_num].mp.mpi) { 3524 mlx5_ib_dbg(ibdev, "port %u already affiliated.\n", 3525 port_num + 1); 3526 spin_unlock(&ibdev->port[port_num].mp.mpi_lock); 3527 return false; 3528 } 3529 3530 ibdev->port[port_num].mp.mpi = mpi; 3531 mpi->ibdev = ibdev; 3532 mpi->mdev_events.notifier_call = NULL; 3533 spin_unlock(&ibdev->port[port_num].mp.mpi_lock); 3534 3535 err = mlx5_nic_vport_affiliate_multiport(ibdev->mdev, mpi->mdev); 3536 if (err) 3537 goto unbind; 3538 3539 mlx5_mdev_netdev_track(ibdev, port_num); 3540 3541 mpi->mdev_events.notifier_call = mlx5_ib_event_slave_port; 3542 mlx5_notifier_register(mpi->mdev, &mpi->mdev_events); 3543 3544 mlx5_ib_init_cong_debugfs(ibdev, port_num); 3545 3546 key = mpi->mdev->priv.adev_idx; 3547 mlx5_core_mp_event_replay(mpi->mdev, 3548 MLX5_DRIVER_EVENT_AFFILIATION_DONE, 3549 &key); 3550 mlx5_core_mp_event_replay(ibdev->mdev, 3551 MLX5_DRIVER_EVENT_AFFILIATION_DONE, 3552 &key); 3553 3554 return true; 3555 3556 unbind: 3557 mlx5_ib_unbind_slave_port(ibdev, mpi); 3558 return false; 3559 } 3560 3561 static int mlx5_ib_data_direct_init(struct mlx5_ib_dev *dev) 3562 { 3563 char vuid[MLX5_ST_SZ_BYTES(array1024_auto) + 1] = {}; 3564 int ret; 3565 3566 if (!MLX5_CAP_GEN(dev->mdev, data_direct) || 3567 !MLX5_CAP_GEN_2(dev->mdev, query_vuid)) 3568 return 0; 3569 3570 ret = mlx5_cmd_query_vuid(dev->mdev, true, vuid); 3571 if (ret) 3572 return ret; 3573 3574 ret = mlx5_ib_create_data_direct_resources(dev); 3575 if (ret) 3576 return ret; 3577 3578 INIT_LIST_HEAD(&dev->data_direct_mr_list); 3579 ret = mlx5_data_direct_ib_reg(dev, vuid); 3580 if (ret) 3581 mlx5_ib_free_data_direct_resources(dev); 3582 3583 return ret; 3584 } 3585 3586 static void mlx5_ib_data_direct_cleanup(struct mlx5_ib_dev *dev) 3587 { 3588 if (!MLX5_CAP_GEN(dev->mdev, data_direct) || 3589 !MLX5_CAP_GEN_2(dev->mdev, query_vuid)) 3590 return; 3591 3592 mlx5_data_direct_ib_unreg(dev); 3593 mlx5_ib_free_data_direct_resources(dev); 3594 } 3595 3596 static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev) 3597 { 3598 u32 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 3599 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 3600 port_num + 1); 3601 struct mlx5_ib_multiport_info *mpi; 3602 int err; 3603 u32 i; 3604 3605 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 3606 return 0; 3607 3608 err = mlx5_query_nic_vport_system_image_guid(dev->mdev, 3609 &dev->sys_image_guid); 3610 if (err) 3611 return err; 3612 3613 err = mlx5_nic_vport_enable_roce(dev->mdev); 3614 if (err) 3615 return err; 3616 3617 mutex_lock(&mlx5_ib_multiport_mutex); 3618 for (i = 0; i < dev->num_ports; i++) { 3619 bool bound = false; 3620 3621 /* build a stub multiport info struct for the native port. */ 3622 if (i == port_num) { 3623 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL); 3624 if (!mpi) { 3625 mutex_unlock(&mlx5_ib_multiport_mutex); 3626 mlx5_nic_vport_disable_roce(dev->mdev); 3627 return -ENOMEM; 3628 } 3629 3630 mpi->is_master = true; 3631 mpi->mdev = dev->mdev; 3632 mpi->sys_image_guid = dev->sys_image_guid; 3633 dev->port[i].mp.mpi = mpi; 3634 mpi->ibdev = dev; 3635 mpi = NULL; 3636 continue; 3637 } 3638 3639 list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list, 3640 list) { 3641 if (dev->sys_image_guid == mpi->sys_image_guid && 3642 (mlx5_core_native_port_num(mpi->mdev) - 1) == i && 3643 mlx5_core_same_coredev_type(dev->mdev, mpi->mdev)) { 3644 bound = mlx5_ib_bind_slave_port(dev, mpi); 3645 } 3646 3647 if (bound) { 3648 dev_dbg(mpi->mdev->device, 3649 "removing port from unaffiliated list.\n"); 3650 mlx5_ib_dbg(dev, "port %d bound\n", i + 1); 3651 list_del(&mpi->list); 3652 break; 3653 } 3654 } 3655 if (!bound) 3656 mlx5_ib_dbg(dev, "no free port found for port %d\n", 3657 i + 1); 3658 } 3659 3660 list_add_tail(&dev->ib_dev_list, &mlx5_ib_dev_list); 3661 mutex_unlock(&mlx5_ib_multiport_mutex); 3662 return err; 3663 } 3664 3665 static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev) 3666 { 3667 u32 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 3668 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 3669 port_num + 1); 3670 u32 i; 3671 3672 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 3673 return; 3674 3675 mutex_lock(&mlx5_ib_multiport_mutex); 3676 for (i = 0; i < dev->num_ports; i++) { 3677 if (dev->port[i].mp.mpi) { 3678 /* Destroy the native port stub */ 3679 if (i == port_num) { 3680 kfree(dev->port[i].mp.mpi); 3681 dev->port[i].mp.mpi = NULL; 3682 } else { 3683 mlx5_ib_dbg(dev, "unbinding port_num: %u\n", 3684 i + 1); 3685 list_add_tail(&dev->port[i].mp.mpi->list, 3686 &mlx5_ib_unaffiliated_port_list); 3687 mlx5_ib_unbind_slave_port(dev, 3688 dev->port[i].mp.mpi); 3689 } 3690 } 3691 } 3692 3693 mlx5_ib_dbg(dev, "removing from devlist\n"); 3694 list_del(&dev->ib_dev_list); 3695 mutex_unlock(&mlx5_ib_multiport_mutex); 3696 3697 mlx5_nic_vport_disable_roce(dev->mdev); 3698 } 3699 3700 static int mmap_obj_cleanup(struct ib_uobject *uobject, 3701 enum rdma_remove_reason why, 3702 struct uverbs_attr_bundle *attrs) 3703 { 3704 struct mlx5_user_mmap_entry *obj = uobject->object; 3705 3706 rdma_user_mmap_entry_remove(&obj->rdma_entry); 3707 return 0; 3708 } 3709 3710 static int mlx5_rdma_user_mmap_entry_insert(struct mlx5_ib_ucontext *c, 3711 struct mlx5_user_mmap_entry *entry, 3712 size_t length) 3713 { 3714 return rdma_user_mmap_entry_insert_range( 3715 &c->ibucontext, &entry->rdma_entry, length, 3716 (MLX5_IB_MMAP_OFFSET_START << 16), 3717 ((MLX5_IB_MMAP_OFFSET_END << 16) + (1UL << 16) - 1)); 3718 } 3719 3720 static struct mlx5_user_mmap_entry * 3721 alloc_var_entry(struct mlx5_ib_ucontext *c) 3722 { 3723 struct mlx5_user_mmap_entry *entry; 3724 struct mlx5_var_table *var_table; 3725 u32 page_idx; 3726 int err; 3727 3728 var_table = &to_mdev(c->ibucontext.device)->var_table; 3729 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 3730 if (!entry) 3731 return ERR_PTR(-ENOMEM); 3732 3733 mutex_lock(&var_table->bitmap_lock); 3734 page_idx = find_first_zero_bit(var_table->bitmap, 3735 var_table->num_var_hw_entries); 3736 if (page_idx >= var_table->num_var_hw_entries) { 3737 err = -ENOSPC; 3738 mutex_unlock(&var_table->bitmap_lock); 3739 goto end; 3740 } 3741 3742 set_bit(page_idx, var_table->bitmap); 3743 mutex_unlock(&var_table->bitmap_lock); 3744 3745 entry->address = var_table->hw_start_addr + 3746 (page_idx * var_table->stride_size); 3747 entry->page_idx = page_idx; 3748 entry->mmap_flag = MLX5_IB_MMAP_TYPE_VAR; 3749 3750 err = mlx5_rdma_user_mmap_entry_insert(c, entry, 3751 var_table->stride_size); 3752 if (err) 3753 goto err_insert; 3754 3755 return entry; 3756 3757 err_insert: 3758 mutex_lock(&var_table->bitmap_lock); 3759 clear_bit(page_idx, var_table->bitmap); 3760 mutex_unlock(&var_table->bitmap_lock); 3761 end: 3762 kfree(entry); 3763 return ERR_PTR(err); 3764 } 3765 3766 static int UVERBS_HANDLER(MLX5_IB_METHOD_VAR_OBJ_ALLOC)( 3767 struct uverbs_attr_bundle *attrs) 3768 { 3769 struct ib_uobject *uobj = uverbs_attr_get_uobject( 3770 attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE); 3771 struct mlx5_ib_ucontext *c; 3772 struct mlx5_user_mmap_entry *entry; 3773 u64 mmap_offset; 3774 u32 length; 3775 int err; 3776 3777 c = to_mucontext(ib_uverbs_get_ucontext(attrs)); 3778 if (IS_ERR(c)) 3779 return PTR_ERR(c); 3780 3781 entry = alloc_var_entry(c); 3782 if (IS_ERR(entry)) 3783 return PTR_ERR(entry); 3784 3785 mmap_offset = mlx5_entry_to_mmap_offset(entry); 3786 length = entry->rdma_entry.npages * PAGE_SIZE; 3787 uobj->object = entry; 3788 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE); 3789 3790 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET, 3791 &mmap_offset, sizeof(mmap_offset)); 3792 if (err) 3793 return err; 3794 3795 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID, 3796 &entry->page_idx, sizeof(entry->page_idx)); 3797 if (err) 3798 return err; 3799 3800 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH, 3801 &length, sizeof(length)); 3802 return err; 3803 } 3804 3805 DECLARE_UVERBS_NAMED_METHOD( 3806 MLX5_IB_METHOD_VAR_OBJ_ALLOC, 3807 UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE, 3808 MLX5_IB_OBJECT_VAR, 3809 UVERBS_ACCESS_NEW, 3810 UA_MANDATORY), 3811 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID, 3812 UVERBS_ATTR_TYPE(u32), 3813 UA_MANDATORY), 3814 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH, 3815 UVERBS_ATTR_TYPE(u32), 3816 UA_MANDATORY), 3817 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET, 3818 UVERBS_ATTR_TYPE(u64), 3819 UA_MANDATORY)); 3820 3821 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 3822 MLX5_IB_METHOD_VAR_OBJ_DESTROY, 3823 UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_DESTROY_HANDLE, 3824 MLX5_IB_OBJECT_VAR, 3825 UVERBS_ACCESS_DESTROY, 3826 UA_MANDATORY)); 3827 3828 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_VAR, 3829 UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup), 3830 &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_ALLOC), 3831 &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_DESTROY)); 3832 3833 static bool var_is_supported(struct ib_device *device) 3834 { 3835 struct mlx5_ib_dev *dev = to_mdev(device); 3836 3837 return (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 3838 MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q); 3839 } 3840 3841 static struct mlx5_user_mmap_entry * 3842 alloc_uar_entry(struct mlx5_ib_ucontext *c, 3843 enum mlx5_ib_uapi_uar_alloc_type alloc_type) 3844 { 3845 struct mlx5_user_mmap_entry *entry; 3846 struct mlx5_ib_dev *dev; 3847 u32 uar_index; 3848 int err; 3849 3850 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 3851 if (!entry) 3852 return ERR_PTR(-ENOMEM); 3853 3854 dev = to_mdev(c->ibucontext.device); 3855 err = mlx5_cmd_uar_alloc(dev->mdev, &uar_index, c->devx_uid); 3856 if (err) 3857 goto end; 3858 3859 entry->page_idx = uar_index; 3860 entry->address = uar_index2paddress(dev, uar_index); 3861 if (alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF) 3862 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_WC; 3863 else 3864 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_NC; 3865 3866 err = mlx5_rdma_user_mmap_entry_insert(c, entry, PAGE_SIZE); 3867 if (err) 3868 goto err_insert; 3869 3870 return entry; 3871 3872 err_insert: 3873 mlx5_cmd_uar_dealloc(dev->mdev, uar_index, c->devx_uid); 3874 end: 3875 kfree(entry); 3876 return ERR_PTR(err); 3877 } 3878 3879 static int UVERBS_HANDLER(MLX5_IB_METHOD_UAR_OBJ_ALLOC)( 3880 struct uverbs_attr_bundle *attrs) 3881 { 3882 struct ib_uobject *uobj = uverbs_attr_get_uobject( 3883 attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE); 3884 enum mlx5_ib_uapi_uar_alloc_type alloc_type; 3885 struct mlx5_ib_ucontext *c; 3886 struct mlx5_user_mmap_entry *entry; 3887 u64 mmap_offset; 3888 u32 length; 3889 int err; 3890 3891 c = to_mucontext(ib_uverbs_get_ucontext(attrs)); 3892 if (IS_ERR(c)) 3893 return PTR_ERR(c); 3894 3895 err = uverbs_get_const(&alloc_type, attrs, 3896 MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE); 3897 if (err) 3898 return err; 3899 3900 if (alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF && 3901 alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_NC) 3902 return -EOPNOTSUPP; 3903 3904 if (!mlx5_wc_support_get(to_mdev(c->ibucontext.device)->mdev) && 3905 alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF) 3906 return -EOPNOTSUPP; 3907 3908 entry = alloc_uar_entry(c, alloc_type); 3909 if (IS_ERR(entry)) 3910 return PTR_ERR(entry); 3911 3912 mmap_offset = mlx5_entry_to_mmap_offset(entry); 3913 length = entry->rdma_entry.npages * PAGE_SIZE; 3914 uobj->object = entry; 3915 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE); 3916 3917 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET, 3918 &mmap_offset, sizeof(mmap_offset)); 3919 if (err) 3920 return err; 3921 3922 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID, 3923 &entry->page_idx, sizeof(entry->page_idx)); 3924 if (err) 3925 return err; 3926 3927 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH, 3928 &length, sizeof(length)); 3929 return err; 3930 } 3931 3932 DECLARE_UVERBS_NAMED_METHOD( 3933 MLX5_IB_METHOD_UAR_OBJ_ALLOC, 3934 UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE, 3935 MLX5_IB_OBJECT_UAR, 3936 UVERBS_ACCESS_NEW, 3937 UA_MANDATORY), 3938 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE, 3939 enum mlx5_ib_uapi_uar_alloc_type, 3940 UA_MANDATORY), 3941 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID, 3942 UVERBS_ATTR_TYPE(u32), 3943 UA_MANDATORY), 3944 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH, 3945 UVERBS_ATTR_TYPE(u32), 3946 UA_MANDATORY), 3947 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET, 3948 UVERBS_ATTR_TYPE(u64), 3949 UA_MANDATORY)); 3950 3951 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 3952 MLX5_IB_METHOD_UAR_OBJ_DESTROY, 3953 UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_DESTROY_HANDLE, 3954 MLX5_IB_OBJECT_UAR, 3955 UVERBS_ACCESS_DESTROY, 3956 UA_MANDATORY)); 3957 3958 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_UAR, 3959 UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup), 3960 &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_ALLOC), 3961 &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_DESTROY)); 3962 3963 ADD_UVERBS_ATTRIBUTES_SIMPLE( 3964 mlx5_ib_query_context, 3965 UVERBS_OBJECT_DEVICE, 3966 UVERBS_METHOD_QUERY_CONTEXT, 3967 UVERBS_ATTR_PTR_OUT( 3968 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX, 3969 UVERBS_ATTR_STRUCT(struct mlx5_ib_alloc_ucontext_resp, 3970 dump_fill_mkey), 3971 UA_MANDATORY)); 3972 3973 ADD_UVERBS_ATTRIBUTES_SIMPLE( 3974 mlx5_ib_reg_dmabuf_mr, 3975 UVERBS_OBJECT_MR, 3976 UVERBS_METHOD_REG_DMABUF_MR, 3977 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_REG_DMABUF_MR_ACCESS_FLAGS, 3978 enum mlx5_ib_uapi_reg_dmabuf_flags, 3979 UA_OPTIONAL)); 3980 3981 static const struct uapi_definition mlx5_ib_defs[] = { 3982 UAPI_DEF_CHAIN(mlx5_ib_devx_defs), 3983 UAPI_DEF_CHAIN(mlx5_ib_flow_defs), 3984 UAPI_DEF_CHAIN(mlx5_ib_qos_defs), 3985 UAPI_DEF_CHAIN(mlx5_ib_std_types_defs), 3986 UAPI_DEF_CHAIN(mlx5_ib_dm_defs), 3987 UAPI_DEF_CHAIN(mlx5_ib_create_cq_defs), 3988 3989 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DEVICE, &mlx5_ib_query_context), 3990 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_MR, &mlx5_ib_reg_dmabuf_mr), 3991 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_VAR, 3992 UAPI_DEF_IS_OBJ_SUPPORTED(var_is_supported)), 3993 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_UAR), 3994 {} 3995 }; 3996 3997 static void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev) 3998 { 3999 mlx5_ib_data_direct_cleanup(dev); 4000 mlx5_ib_cleanup_multiport_master(dev); 4001 WARN_ON(!xa_empty(&dev->odp_mkeys)); 4002 mutex_destroy(&dev->cap_mask_mutex); 4003 WARN_ON(!xa_empty(&dev->sig_mrs)); 4004 WARN_ON(!bitmap_empty(dev->dm.memic_alloc_pages, MLX5_MAX_MEMIC_PAGES)); 4005 mlx5r_macsec_dealloc_gids(dev); 4006 } 4007 4008 static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev) 4009 { 4010 struct mlx5_core_dev *mdev = dev->mdev; 4011 int err, i; 4012 4013 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 4014 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */; 4015 dev->ib_dev.dev.parent = mdev->device; 4016 dev->ib_dev.lag_flags = RDMA_LAG_FLAGS_HASH_ALL_SLAVES; 4017 4018 for (i = 0; i < dev->num_ports; i++) { 4019 spin_lock_init(&dev->port[i].mp.mpi_lock); 4020 dev->port[i].roce.dev = dev; 4021 dev->port[i].roce.native_port_num = i + 1; 4022 dev->port[i].roce.last_port_state = IB_PORT_DOWN; 4023 } 4024 4025 err = mlx5r_cmd_query_special_mkeys(dev); 4026 if (err) 4027 return err; 4028 4029 err = mlx5r_macsec_init_gids_and_devlist(dev); 4030 if (err) 4031 return err; 4032 4033 err = mlx5_ib_init_multiport_master(dev); 4034 if (err) 4035 goto err; 4036 4037 err = set_has_smi_cap(dev); 4038 if (err) 4039 goto err_mp; 4040 4041 err = mlx5_query_max_pkeys(&dev->ib_dev, &dev->pkey_table_len); 4042 if (err) 4043 goto err_mp; 4044 4045 if (mlx5_use_mad_ifc(dev)) 4046 get_ext_port_caps(dev); 4047 4048 dev->ib_dev.num_comp_vectors = mlx5_comp_vectors_max(mdev); 4049 4050 mutex_init(&dev->cap_mask_mutex); 4051 mutex_init(&dev->data_direct_lock); 4052 INIT_LIST_HEAD(&dev->qp_list); 4053 spin_lock_init(&dev->reset_flow_resource_lock); 4054 xa_init(&dev->odp_mkeys); 4055 xa_init(&dev->sig_mrs); 4056 atomic_set(&dev->mkey_var, 0); 4057 4058 spin_lock_init(&dev->dm.lock); 4059 dev->dm.dev = mdev; 4060 err = mlx5_ib_data_direct_init(dev); 4061 if (err) 4062 goto err_mp; 4063 4064 return 0; 4065 err_mp: 4066 mlx5_ib_cleanup_multiport_master(dev); 4067 err: 4068 mlx5r_macsec_dealloc_gids(dev); 4069 return err; 4070 } 4071 4072 static struct ib_device *mlx5_ib_add_sub_dev(struct ib_device *parent, 4073 enum rdma_nl_dev_type type, 4074 const char *name); 4075 static void mlx5_ib_del_sub_dev(struct ib_device *sub_dev); 4076 4077 static const struct ib_device_ops mlx5_ib_dev_ops = { 4078 .owner = THIS_MODULE, 4079 .driver_id = RDMA_DRIVER_MLX5, 4080 .uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION, 4081 4082 .add_gid = mlx5_ib_add_gid, 4083 .add_sub_dev = mlx5_ib_add_sub_dev, 4084 .alloc_mr = mlx5_ib_alloc_mr, 4085 .alloc_mr_integrity = mlx5_ib_alloc_mr_integrity, 4086 .alloc_pd = mlx5_ib_alloc_pd, 4087 .alloc_ucontext = mlx5_ib_alloc_ucontext, 4088 .attach_mcast = mlx5_ib_mcg_attach, 4089 .check_mr_status = mlx5_ib_check_mr_status, 4090 .create_ah = mlx5_ib_create_ah, 4091 .create_cq = mlx5_ib_create_cq, 4092 .create_qp = mlx5_ib_create_qp, 4093 .create_srq = mlx5_ib_create_srq, 4094 .create_user_ah = mlx5_ib_create_ah, 4095 .dealloc_pd = mlx5_ib_dealloc_pd, 4096 .dealloc_ucontext = mlx5_ib_dealloc_ucontext, 4097 .del_gid = mlx5_ib_del_gid, 4098 .del_sub_dev = mlx5_ib_del_sub_dev, 4099 .dereg_mr = mlx5_ib_dereg_mr, 4100 .destroy_ah = mlx5_ib_destroy_ah, 4101 .destroy_cq = mlx5_ib_destroy_cq, 4102 .destroy_qp = mlx5_ib_destroy_qp, 4103 .destroy_srq = mlx5_ib_destroy_srq, 4104 .detach_mcast = mlx5_ib_mcg_detach, 4105 .disassociate_ucontext = mlx5_ib_disassociate_ucontext, 4106 .drain_rq = mlx5_ib_drain_rq, 4107 .drain_sq = mlx5_ib_drain_sq, 4108 .device_group = &mlx5_attr_group, 4109 .get_dev_fw_str = get_dev_fw_str, 4110 .get_dma_mr = mlx5_ib_get_dma_mr, 4111 .get_link_layer = mlx5_ib_port_link_layer, 4112 .map_mr_sg = mlx5_ib_map_mr_sg, 4113 .map_mr_sg_pi = mlx5_ib_map_mr_sg_pi, 4114 .mmap = mlx5_ib_mmap, 4115 .mmap_free = mlx5_ib_mmap_free, 4116 .modify_cq = mlx5_ib_modify_cq, 4117 .modify_device = mlx5_ib_modify_device, 4118 .modify_port = mlx5_ib_modify_port, 4119 .modify_qp = mlx5_ib_modify_qp, 4120 .modify_srq = mlx5_ib_modify_srq, 4121 .poll_cq = mlx5_ib_poll_cq, 4122 .post_recv = mlx5_ib_post_recv_nodrain, 4123 .post_send = mlx5_ib_post_send_nodrain, 4124 .post_srq_recv = mlx5_ib_post_srq_recv, 4125 .process_mad = mlx5_ib_process_mad, 4126 .query_ah = mlx5_ib_query_ah, 4127 .query_device = mlx5_ib_query_device, 4128 .query_gid = mlx5_ib_query_gid, 4129 .query_pkey = mlx5_ib_query_pkey, 4130 .query_qp = mlx5_ib_query_qp, 4131 .query_srq = mlx5_ib_query_srq, 4132 .query_ucontext = mlx5_ib_query_ucontext, 4133 .reg_user_mr = mlx5_ib_reg_user_mr, 4134 .reg_user_mr_dmabuf = mlx5_ib_reg_user_mr_dmabuf, 4135 .req_notify_cq = mlx5_ib_arm_cq, 4136 .rereg_user_mr = mlx5_ib_rereg_user_mr, 4137 .resize_cq = mlx5_ib_resize_cq, 4138 .ufile_hw_cleanup = mlx5_ib_ufile_hw_cleanup, 4139 4140 INIT_RDMA_OBJ_SIZE(ib_ah, mlx5_ib_ah, ibah), 4141 INIT_RDMA_OBJ_SIZE(ib_counters, mlx5_ib_mcounters, ibcntrs), 4142 INIT_RDMA_OBJ_SIZE(ib_cq, mlx5_ib_cq, ibcq), 4143 INIT_RDMA_OBJ_SIZE(ib_pd, mlx5_ib_pd, ibpd), 4144 INIT_RDMA_OBJ_SIZE(ib_qp, mlx5_ib_qp, ibqp), 4145 INIT_RDMA_OBJ_SIZE(ib_srq, mlx5_ib_srq, ibsrq), 4146 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx5_ib_ucontext, ibucontext), 4147 }; 4148 4149 static const struct ib_device_ops mlx5_ib_dev_ipoib_enhanced_ops = { 4150 .rdma_netdev_get_params = mlx5_ib_rn_get_params, 4151 }; 4152 4153 static const struct ib_device_ops mlx5_ib_dev_sriov_ops = { 4154 .get_vf_config = mlx5_ib_get_vf_config, 4155 .get_vf_guid = mlx5_ib_get_vf_guid, 4156 .get_vf_stats = mlx5_ib_get_vf_stats, 4157 .set_vf_guid = mlx5_ib_set_vf_guid, 4158 .set_vf_link_state = mlx5_ib_set_vf_link_state, 4159 }; 4160 4161 static const struct ib_device_ops mlx5_ib_dev_mw_ops = { 4162 .alloc_mw = mlx5_ib_alloc_mw, 4163 .dealloc_mw = mlx5_ib_dealloc_mw, 4164 4165 INIT_RDMA_OBJ_SIZE(ib_mw, mlx5_ib_mw, ibmw), 4166 }; 4167 4168 static const struct ib_device_ops mlx5_ib_dev_xrc_ops = { 4169 .alloc_xrcd = mlx5_ib_alloc_xrcd, 4170 .dealloc_xrcd = mlx5_ib_dealloc_xrcd, 4171 4172 INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx5_ib_xrcd, ibxrcd), 4173 }; 4174 4175 static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev) 4176 { 4177 struct mlx5_core_dev *mdev = dev->mdev; 4178 struct mlx5_var_table *var_table = &dev->var_table; 4179 u8 log_doorbell_bar_size; 4180 u8 log_doorbell_stride; 4181 u64 bar_size; 4182 4183 log_doorbell_bar_size = MLX5_CAP_DEV_VDPA_EMULATION(mdev, 4184 log_doorbell_bar_size); 4185 log_doorbell_stride = MLX5_CAP_DEV_VDPA_EMULATION(mdev, 4186 log_doorbell_stride); 4187 var_table->hw_start_addr = dev->mdev->bar_addr + 4188 MLX5_CAP64_DEV_VDPA_EMULATION(mdev, 4189 doorbell_bar_offset); 4190 bar_size = (1ULL << log_doorbell_bar_size) * 4096; 4191 var_table->stride_size = 1ULL << log_doorbell_stride; 4192 var_table->num_var_hw_entries = div_u64(bar_size, 4193 var_table->stride_size); 4194 mutex_init(&var_table->bitmap_lock); 4195 var_table->bitmap = bitmap_zalloc(var_table->num_var_hw_entries, 4196 GFP_KERNEL); 4197 return (var_table->bitmap) ? 0 : -ENOMEM; 4198 } 4199 4200 static void mlx5_ib_stage_caps_cleanup(struct mlx5_ib_dev *dev) 4201 { 4202 bitmap_free(dev->var_table.bitmap); 4203 } 4204 4205 static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) 4206 { 4207 struct mlx5_core_dev *mdev = dev->mdev; 4208 int err; 4209 4210 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) && 4211 IS_ENABLED(CONFIG_MLX5_CORE_IPOIB)) 4212 ib_set_device_ops(&dev->ib_dev, 4213 &mlx5_ib_dev_ipoib_enhanced_ops); 4214 4215 if (mlx5_core_is_pf(mdev)) 4216 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_sriov_ops); 4217 4218 dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence)); 4219 4220 if (MLX5_CAP_GEN(mdev, imaicl)) 4221 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_mw_ops); 4222 4223 if (MLX5_CAP_GEN(mdev, xrc)) 4224 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_xrc_ops); 4225 4226 if (MLX5_CAP_DEV_MEM(mdev, memic) || 4227 MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 4228 MLX5_GENERAL_OBJ_TYPES_CAP_SW_ICM) 4229 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_dm_ops); 4230 4231 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_ops); 4232 4233 if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)) 4234 dev->ib_dev.driver_def = mlx5_ib_defs; 4235 4236 err = init_node_data(dev); 4237 if (err) 4238 return err; 4239 4240 if ((MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) && 4241 (MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) || 4242 MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 4243 mutex_init(&dev->lb.mutex); 4244 4245 if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 4246 MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) { 4247 err = mlx5_ib_init_var_table(dev); 4248 if (err) 4249 return err; 4250 } 4251 4252 dev->ib_dev.use_cq_dim = true; 4253 4254 return 0; 4255 } 4256 4257 static const struct ib_device_ops mlx5_ib_dev_port_ops = { 4258 .get_port_immutable = mlx5_port_immutable, 4259 .query_port = mlx5_ib_query_port, 4260 }; 4261 4262 static int mlx5_ib_stage_non_default_cb(struct mlx5_ib_dev *dev) 4263 { 4264 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_ops); 4265 return 0; 4266 } 4267 4268 static const struct ib_device_ops mlx5_ib_dev_port_rep_ops = { 4269 .get_port_immutable = mlx5_port_rep_immutable, 4270 .query_port = mlx5_ib_rep_query_port, 4271 .query_pkey = mlx5_ib_rep_query_pkey, 4272 }; 4273 4274 static int mlx5_ib_stage_raw_eth_non_default_cb(struct mlx5_ib_dev *dev) 4275 { 4276 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_rep_ops); 4277 return 0; 4278 } 4279 4280 static const struct ib_device_ops mlx5_ib_dev_common_roce_ops = { 4281 .create_rwq_ind_table = mlx5_ib_create_rwq_ind_table, 4282 .create_wq = mlx5_ib_create_wq, 4283 .destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table, 4284 .destroy_wq = mlx5_ib_destroy_wq, 4285 .modify_wq = mlx5_ib_modify_wq, 4286 4287 INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx5_ib_rwq_ind_table, 4288 ib_rwq_ind_tbl), 4289 }; 4290 4291 static int mlx5_ib_roce_init(struct mlx5_ib_dev *dev) 4292 { 4293 struct mlx5_core_dev *mdev = dev->mdev; 4294 enum rdma_link_layer ll; 4295 int port_type_cap; 4296 u32 port_num = 0; 4297 int err; 4298 4299 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 4300 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 4301 4302 if (ll == IB_LINK_LAYER_ETHERNET) { 4303 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_common_roce_ops); 4304 4305 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 4306 4307 /* Register only for native ports */ 4308 mlx5_mdev_netdev_track(dev, port_num); 4309 4310 err = mlx5_enable_eth(dev); 4311 if (err) 4312 goto cleanup; 4313 } 4314 4315 return 0; 4316 cleanup: 4317 mlx5_mdev_netdev_untrack(dev, port_num); 4318 return err; 4319 } 4320 4321 static void mlx5_ib_roce_cleanup(struct mlx5_ib_dev *dev) 4322 { 4323 struct mlx5_core_dev *mdev = dev->mdev; 4324 enum rdma_link_layer ll; 4325 int port_type_cap; 4326 u32 port_num; 4327 4328 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 4329 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 4330 4331 if (ll == IB_LINK_LAYER_ETHERNET) { 4332 mlx5_disable_eth(dev); 4333 4334 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 4335 mlx5_mdev_netdev_untrack(dev, port_num); 4336 } 4337 } 4338 4339 static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev) 4340 { 4341 mlx5_ib_init_cong_debugfs(dev, 4342 mlx5_core_native_port_num(dev->mdev) - 1); 4343 return 0; 4344 } 4345 4346 static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev) 4347 { 4348 mlx5_ib_cleanup_cong_debugfs(dev, 4349 mlx5_core_native_port_num(dev->mdev) - 1); 4350 } 4351 4352 static int mlx5_ib_stage_uar_init(struct mlx5_ib_dev *dev) 4353 { 4354 dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev); 4355 return PTR_ERR_OR_ZERO(dev->mdev->priv.uar); 4356 } 4357 4358 static void mlx5_ib_stage_uar_cleanup(struct mlx5_ib_dev *dev) 4359 { 4360 mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar); 4361 } 4362 4363 static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev) 4364 { 4365 int err; 4366 4367 err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false); 4368 if (err) 4369 return err; 4370 4371 err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true); 4372 if (err) 4373 mlx5_free_bfreg(dev->mdev, &dev->bfreg); 4374 4375 return err; 4376 } 4377 4378 static void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev) 4379 { 4380 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); 4381 mlx5_free_bfreg(dev->mdev, &dev->bfreg); 4382 } 4383 4384 static int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev) 4385 { 4386 const char *name; 4387 4388 if (dev->sub_dev_name) { 4389 name = dev->sub_dev_name; 4390 ib_mark_name_assigned_by_user(&dev->ib_dev); 4391 } else if (!mlx5_lag_is_active(dev->mdev)) 4392 name = "mlx5_%d"; 4393 else 4394 name = "mlx5_bond_%d"; 4395 return ib_register_device(&dev->ib_dev, name, &dev->mdev->pdev->dev); 4396 } 4397 4398 static void mlx5_ib_stage_pre_ib_reg_umr_cleanup(struct mlx5_ib_dev *dev) 4399 { 4400 mlx5_mkey_cache_cleanup(dev); 4401 mlx5r_umr_resource_cleanup(dev); 4402 mlx5r_umr_cleanup(dev); 4403 } 4404 4405 static void mlx5_ib_stage_ib_reg_cleanup(struct mlx5_ib_dev *dev) 4406 { 4407 ib_unregister_device(&dev->ib_dev); 4408 } 4409 4410 static int mlx5_ib_stage_post_ib_reg_umr_init(struct mlx5_ib_dev *dev) 4411 { 4412 int ret; 4413 4414 ret = mlx5r_umr_init(dev); 4415 if (ret) 4416 return ret; 4417 4418 ret = mlx5_mkey_cache_init(dev); 4419 if (ret) 4420 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 4421 return ret; 4422 } 4423 4424 static int mlx5_ib_stage_delay_drop_init(struct mlx5_ib_dev *dev) 4425 { 4426 struct dentry *root; 4427 4428 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP)) 4429 return 0; 4430 4431 mutex_init(&dev->delay_drop.lock); 4432 dev->delay_drop.dev = dev; 4433 dev->delay_drop.activate = false; 4434 dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000; 4435 INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler); 4436 atomic_set(&dev->delay_drop.rqs_cnt, 0); 4437 atomic_set(&dev->delay_drop.events_cnt, 0); 4438 4439 if (!mlx5_debugfs_root) 4440 return 0; 4441 4442 root = debugfs_create_dir("delay_drop", mlx5_debugfs_get_dev_root(dev->mdev)); 4443 dev->delay_drop.dir_debugfs = root; 4444 4445 debugfs_create_atomic_t("num_timeout_events", 0400, root, 4446 &dev->delay_drop.events_cnt); 4447 debugfs_create_atomic_t("num_rqs", 0400, root, 4448 &dev->delay_drop.rqs_cnt); 4449 debugfs_create_file("timeout", 0600, root, &dev->delay_drop, 4450 &fops_delay_drop_timeout); 4451 return 0; 4452 } 4453 4454 static void mlx5_ib_stage_delay_drop_cleanup(struct mlx5_ib_dev *dev) 4455 { 4456 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP)) 4457 return; 4458 4459 cancel_work_sync(&dev->delay_drop.delay_drop_work); 4460 if (!dev->delay_drop.dir_debugfs) 4461 return; 4462 4463 debugfs_remove_recursive(dev->delay_drop.dir_debugfs); 4464 dev->delay_drop.dir_debugfs = NULL; 4465 } 4466 4467 static int mlx5_ib_stage_dev_notifier_init(struct mlx5_ib_dev *dev) 4468 { 4469 struct mlx5_ib_resources *devr = &dev->devr; 4470 int port; 4471 4472 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) 4473 INIT_WORK(&devr->ports[port].pkey_change_work, 4474 pkey_change_handler); 4475 4476 dev->mdev_events.notifier_call = mlx5_ib_event; 4477 mlx5_notifier_register(dev->mdev, &dev->mdev_events); 4478 4479 mlx5r_macsec_event_register(dev); 4480 4481 return 0; 4482 } 4483 4484 static void mlx5_ib_stage_dev_notifier_cleanup(struct mlx5_ib_dev *dev) 4485 { 4486 struct mlx5_ib_resources *devr = &dev->devr; 4487 int port; 4488 4489 mlx5r_macsec_event_unregister(dev); 4490 mlx5_notifier_unregister(dev->mdev, &dev->mdev_events); 4491 4492 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) 4493 cancel_work_sync(&devr->ports[port].pkey_change_work); 4494 } 4495 4496 void mlx5_ib_data_direct_bind(struct mlx5_ib_dev *ibdev, 4497 struct mlx5_data_direct_dev *dev) 4498 { 4499 mutex_lock(&ibdev->data_direct_lock); 4500 ibdev->data_direct_dev = dev; 4501 mutex_unlock(&ibdev->data_direct_lock); 4502 } 4503 4504 void mlx5_ib_data_direct_unbind(struct mlx5_ib_dev *ibdev) 4505 { 4506 mutex_lock(&ibdev->data_direct_lock); 4507 mlx5_ib_revoke_data_direct_mrs(ibdev); 4508 ibdev->data_direct_dev = NULL; 4509 mutex_unlock(&ibdev->data_direct_lock); 4510 } 4511 4512 void __mlx5_ib_remove(struct mlx5_ib_dev *dev, 4513 const struct mlx5_ib_profile *profile, 4514 int stage) 4515 { 4516 dev->ib_active = false; 4517 4518 /* Number of stages to cleanup */ 4519 while (stage) { 4520 stage--; 4521 if (profile->stage[stage].cleanup) 4522 profile->stage[stage].cleanup(dev); 4523 } 4524 4525 kfree(dev->port); 4526 ib_dealloc_device(&dev->ib_dev); 4527 } 4528 4529 int __mlx5_ib_add(struct mlx5_ib_dev *dev, 4530 const struct mlx5_ib_profile *profile) 4531 { 4532 int err; 4533 int i; 4534 4535 dev->profile = profile; 4536 4537 for (i = 0; i < MLX5_IB_STAGE_MAX; i++) { 4538 if (profile->stage[i].init) { 4539 err = profile->stage[i].init(dev); 4540 if (err) 4541 goto err_out; 4542 } 4543 } 4544 4545 dev->ib_active = true; 4546 return 0; 4547 4548 err_out: 4549 /* Clean up stages which were initialized */ 4550 while (i) { 4551 i--; 4552 if (profile->stage[i].cleanup) 4553 profile->stage[i].cleanup(dev); 4554 } 4555 return -ENOMEM; 4556 } 4557 4558 static const struct mlx5_ib_profile pf_profile = { 4559 STAGE_CREATE(MLX5_IB_STAGE_INIT, 4560 mlx5_ib_stage_init_init, 4561 mlx5_ib_stage_init_cleanup), 4562 STAGE_CREATE(MLX5_IB_STAGE_FS, 4563 mlx5_ib_fs_init, 4564 mlx5_ib_fs_cleanup), 4565 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 4566 mlx5_ib_stage_caps_init, 4567 mlx5_ib_stage_caps_cleanup), 4568 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 4569 mlx5_ib_stage_non_default_cb, 4570 NULL), 4571 STAGE_CREATE(MLX5_IB_STAGE_ROCE, 4572 mlx5_ib_roce_init, 4573 mlx5_ib_roce_cleanup), 4574 STAGE_CREATE(MLX5_IB_STAGE_QP, 4575 mlx5_init_qp_table, 4576 mlx5_cleanup_qp_table), 4577 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 4578 mlx5_init_srq_table, 4579 mlx5_cleanup_srq_table), 4580 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 4581 mlx5_ib_dev_res_init, 4582 mlx5_ib_dev_res_cleanup), 4583 STAGE_CREATE(MLX5_IB_STAGE_ODP, 4584 mlx5_ib_odp_init_one, 4585 mlx5_ib_odp_cleanup_one), 4586 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS, 4587 mlx5_ib_counters_init, 4588 mlx5_ib_counters_cleanup), 4589 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS, 4590 mlx5_ib_stage_cong_debugfs_init, 4591 mlx5_ib_stage_cong_debugfs_cleanup), 4592 STAGE_CREATE(MLX5_IB_STAGE_UAR, 4593 mlx5_ib_stage_uar_init, 4594 mlx5_ib_stage_uar_cleanup), 4595 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 4596 mlx5_ib_stage_bfrag_init, 4597 mlx5_ib_stage_bfrag_cleanup), 4598 STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR, 4599 NULL, 4600 mlx5_ib_stage_pre_ib_reg_umr_cleanup), 4601 STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID, 4602 mlx5_ib_devx_init, 4603 mlx5_ib_devx_cleanup), 4604 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 4605 mlx5_ib_stage_ib_reg_init, 4606 mlx5_ib_stage_ib_reg_cleanup), 4607 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER, 4608 mlx5_ib_stage_dev_notifier_init, 4609 mlx5_ib_stage_dev_notifier_cleanup), 4610 STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR, 4611 mlx5_ib_stage_post_ib_reg_umr_init, 4612 NULL), 4613 STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP, 4614 mlx5_ib_stage_delay_drop_init, 4615 mlx5_ib_stage_delay_drop_cleanup), 4616 STAGE_CREATE(MLX5_IB_STAGE_RESTRACK, 4617 mlx5_ib_restrack_init, 4618 NULL), 4619 }; 4620 4621 const struct mlx5_ib_profile raw_eth_profile = { 4622 STAGE_CREATE(MLX5_IB_STAGE_INIT, 4623 mlx5_ib_stage_init_init, 4624 mlx5_ib_stage_init_cleanup), 4625 STAGE_CREATE(MLX5_IB_STAGE_FS, 4626 mlx5_ib_fs_init, 4627 mlx5_ib_fs_cleanup), 4628 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 4629 mlx5_ib_stage_caps_init, 4630 mlx5_ib_stage_caps_cleanup), 4631 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 4632 mlx5_ib_stage_raw_eth_non_default_cb, 4633 NULL), 4634 STAGE_CREATE(MLX5_IB_STAGE_ROCE, 4635 mlx5_ib_roce_init, 4636 mlx5_ib_roce_cleanup), 4637 STAGE_CREATE(MLX5_IB_STAGE_QP, 4638 mlx5_init_qp_table, 4639 mlx5_cleanup_qp_table), 4640 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 4641 mlx5_init_srq_table, 4642 mlx5_cleanup_srq_table), 4643 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 4644 mlx5_ib_dev_res_init, 4645 mlx5_ib_dev_res_cleanup), 4646 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS, 4647 mlx5_ib_counters_init, 4648 mlx5_ib_counters_cleanup), 4649 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS, 4650 mlx5_ib_stage_cong_debugfs_init, 4651 mlx5_ib_stage_cong_debugfs_cleanup), 4652 STAGE_CREATE(MLX5_IB_STAGE_UAR, 4653 mlx5_ib_stage_uar_init, 4654 mlx5_ib_stage_uar_cleanup), 4655 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 4656 mlx5_ib_stage_bfrag_init, 4657 mlx5_ib_stage_bfrag_cleanup), 4658 STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR, 4659 NULL, 4660 mlx5_ib_stage_pre_ib_reg_umr_cleanup), 4661 STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID, 4662 mlx5_ib_devx_init, 4663 mlx5_ib_devx_cleanup), 4664 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 4665 mlx5_ib_stage_ib_reg_init, 4666 mlx5_ib_stage_ib_reg_cleanup), 4667 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER, 4668 mlx5_ib_stage_dev_notifier_init, 4669 mlx5_ib_stage_dev_notifier_cleanup), 4670 STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR, 4671 mlx5_ib_stage_post_ib_reg_umr_init, 4672 NULL), 4673 STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP, 4674 mlx5_ib_stage_delay_drop_init, 4675 mlx5_ib_stage_delay_drop_cleanup), 4676 STAGE_CREATE(MLX5_IB_STAGE_RESTRACK, 4677 mlx5_ib_restrack_init, 4678 NULL), 4679 }; 4680 4681 static const struct mlx5_ib_profile plane_profile = { 4682 STAGE_CREATE(MLX5_IB_STAGE_INIT, 4683 mlx5_ib_stage_init_init, 4684 mlx5_ib_stage_init_cleanup), 4685 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 4686 mlx5_ib_stage_caps_init, 4687 mlx5_ib_stage_caps_cleanup), 4688 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 4689 mlx5_ib_stage_non_default_cb, 4690 NULL), 4691 STAGE_CREATE(MLX5_IB_STAGE_QP, 4692 mlx5_init_qp_table, 4693 mlx5_cleanup_qp_table), 4694 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 4695 mlx5_init_srq_table, 4696 mlx5_cleanup_srq_table), 4697 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 4698 mlx5_ib_dev_res_init, 4699 mlx5_ib_dev_res_cleanup), 4700 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 4701 mlx5_ib_stage_bfrag_init, 4702 mlx5_ib_stage_bfrag_cleanup), 4703 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 4704 mlx5_ib_stage_ib_reg_init, 4705 mlx5_ib_stage_ib_reg_cleanup), 4706 }; 4707 4708 static struct ib_device *mlx5_ib_add_sub_dev(struct ib_device *parent, 4709 enum rdma_nl_dev_type type, 4710 const char *name) 4711 { 4712 struct mlx5_ib_dev *mparent = to_mdev(parent), *mplane; 4713 enum rdma_link_layer ll; 4714 int ret; 4715 4716 if (mparent->smi_dev) 4717 return ERR_PTR(-EEXIST); 4718 4719 ll = mlx5_port_type_cap_to_rdma_ll(MLX5_CAP_GEN(mparent->mdev, 4720 port_type)); 4721 if (type != RDMA_DEVICE_TYPE_SMI || !mparent->num_plane || 4722 ll != IB_LINK_LAYER_INFINIBAND || 4723 !MLX5_CAP_GEN_2(mparent->mdev, multiplane_qp_ud)) 4724 return ERR_PTR(-EOPNOTSUPP); 4725 4726 mplane = ib_alloc_device(mlx5_ib_dev, ib_dev); 4727 if (!mplane) 4728 return ERR_PTR(-ENOMEM); 4729 4730 mplane->port = kcalloc(mparent->num_plane * mparent->num_ports, 4731 sizeof(*mplane->port), GFP_KERNEL); 4732 if (!mplane->port) { 4733 ret = -ENOMEM; 4734 goto fail_kcalloc; 4735 } 4736 4737 mplane->ib_dev.type = type; 4738 mplane->mdev = mparent->mdev; 4739 mplane->num_ports = mparent->num_plane; 4740 mplane->sub_dev_name = name; 4741 mplane->ib_dev.phys_port_cnt = mplane->num_ports; 4742 4743 ret = __mlx5_ib_add(mplane, &plane_profile); 4744 if (ret) 4745 goto fail_ib_add; 4746 4747 mparent->smi_dev = mplane; 4748 return &mplane->ib_dev; 4749 4750 fail_ib_add: 4751 kfree(mplane->port); 4752 fail_kcalloc: 4753 ib_dealloc_device(&mplane->ib_dev); 4754 return ERR_PTR(ret); 4755 } 4756 4757 static void mlx5_ib_del_sub_dev(struct ib_device *sub_dev) 4758 { 4759 struct mlx5_ib_dev *mdev = to_mdev(sub_dev); 4760 4761 to_mdev(sub_dev->parent)->smi_dev = NULL; 4762 __mlx5_ib_remove(mdev, mdev->profile, MLX5_IB_STAGE_MAX); 4763 } 4764 4765 static int mlx5r_mp_probe(struct auxiliary_device *adev, 4766 const struct auxiliary_device_id *id) 4767 { 4768 struct mlx5_adev *idev = container_of(adev, struct mlx5_adev, adev); 4769 struct mlx5_core_dev *mdev = idev->mdev; 4770 struct mlx5_ib_multiport_info *mpi; 4771 struct mlx5_ib_dev *dev; 4772 bool bound = false; 4773 int err; 4774 4775 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL); 4776 if (!mpi) 4777 return -ENOMEM; 4778 4779 mpi->mdev = mdev; 4780 err = mlx5_query_nic_vport_system_image_guid(mdev, 4781 &mpi->sys_image_guid); 4782 if (err) { 4783 kfree(mpi); 4784 return err; 4785 } 4786 4787 mutex_lock(&mlx5_ib_multiport_mutex); 4788 list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) { 4789 if (dev->sys_image_guid == mpi->sys_image_guid && 4790 mlx5_core_same_coredev_type(dev->mdev, mpi->mdev)) 4791 bound = mlx5_ib_bind_slave_port(dev, mpi); 4792 4793 if (bound) { 4794 rdma_roce_rescan_device(&dev->ib_dev); 4795 mpi->ibdev->ib_active = true; 4796 break; 4797 } 4798 } 4799 4800 if (!bound) { 4801 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list); 4802 dev_dbg(mdev->device, 4803 "no suitable IB device found to bind to, added to unaffiliated list.\n"); 4804 } 4805 mutex_unlock(&mlx5_ib_multiport_mutex); 4806 4807 auxiliary_set_drvdata(adev, mpi); 4808 return 0; 4809 } 4810 4811 static void mlx5r_mp_remove(struct auxiliary_device *adev) 4812 { 4813 struct mlx5_ib_multiport_info *mpi; 4814 4815 mpi = auxiliary_get_drvdata(adev); 4816 mutex_lock(&mlx5_ib_multiport_mutex); 4817 if (mpi->ibdev) 4818 mlx5_ib_unbind_slave_port(mpi->ibdev, mpi); 4819 else 4820 list_del(&mpi->list); 4821 mutex_unlock(&mlx5_ib_multiport_mutex); 4822 kfree(mpi); 4823 } 4824 4825 static int mlx5r_probe(struct auxiliary_device *adev, 4826 const struct auxiliary_device_id *id) 4827 { 4828 struct mlx5_adev *idev = container_of(adev, struct mlx5_adev, adev); 4829 struct mlx5_core_dev *mdev = idev->mdev; 4830 const struct mlx5_ib_profile *profile; 4831 int port_type_cap, num_ports, ret; 4832 enum rdma_link_layer ll; 4833 struct mlx5_ib_dev *dev; 4834 4835 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 4836 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 4837 4838 num_ports = max(MLX5_CAP_GEN(mdev, num_ports), 4839 MLX5_CAP_GEN(mdev, num_vhca_ports)); 4840 dev = ib_alloc_device(mlx5_ib_dev, ib_dev); 4841 if (!dev) 4842 return -ENOMEM; 4843 4844 if (ll == IB_LINK_LAYER_INFINIBAND) { 4845 ret = mlx5_ib_get_plane_num(mdev, &dev->num_plane); 4846 if (ret) 4847 goto fail; 4848 } 4849 4850 dev->port = kcalloc(num_ports, sizeof(*dev->port), 4851 GFP_KERNEL); 4852 if (!dev->port) { 4853 ret = -ENOMEM; 4854 goto fail; 4855 } 4856 4857 dev->mdev = mdev; 4858 dev->num_ports = num_ports; 4859 dev->ib_dev.phys_port_cnt = num_ports; 4860 4861 if (ll == IB_LINK_LAYER_ETHERNET && !mlx5_get_roce_state(mdev)) 4862 profile = &raw_eth_profile; 4863 else 4864 profile = &pf_profile; 4865 4866 ret = __mlx5_ib_add(dev, profile); 4867 if (ret) 4868 goto fail_ib_add; 4869 4870 auxiliary_set_drvdata(adev, dev); 4871 return 0; 4872 4873 fail_ib_add: 4874 kfree(dev->port); 4875 fail: 4876 ib_dealloc_device(&dev->ib_dev); 4877 return ret; 4878 } 4879 4880 static void mlx5r_remove(struct auxiliary_device *adev) 4881 { 4882 struct mlx5_ib_dev *dev; 4883 4884 dev = auxiliary_get_drvdata(adev); 4885 __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX); 4886 } 4887 4888 static const struct auxiliary_device_id mlx5r_mp_id_table[] = { 4889 { .name = MLX5_ADEV_NAME ".multiport", }, 4890 {}, 4891 }; 4892 4893 static const struct auxiliary_device_id mlx5r_id_table[] = { 4894 { .name = MLX5_ADEV_NAME ".rdma", }, 4895 {}, 4896 }; 4897 4898 MODULE_DEVICE_TABLE(auxiliary, mlx5r_mp_id_table); 4899 MODULE_DEVICE_TABLE(auxiliary, mlx5r_id_table); 4900 4901 static struct auxiliary_driver mlx5r_mp_driver = { 4902 .name = "multiport", 4903 .probe = mlx5r_mp_probe, 4904 .remove = mlx5r_mp_remove, 4905 .id_table = mlx5r_mp_id_table, 4906 }; 4907 4908 static struct auxiliary_driver mlx5r_driver = { 4909 .name = "rdma", 4910 .probe = mlx5r_probe, 4911 .remove = mlx5r_remove, 4912 .id_table = mlx5r_id_table, 4913 }; 4914 4915 static int __init mlx5_ib_init(void) 4916 { 4917 int ret; 4918 4919 xlt_emergency_page = (void *)__get_free_page(GFP_KERNEL); 4920 if (!xlt_emergency_page) 4921 return -ENOMEM; 4922 4923 mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0); 4924 if (!mlx5_ib_event_wq) { 4925 free_page((unsigned long)xlt_emergency_page); 4926 return -ENOMEM; 4927 } 4928 4929 ret = mlx5_ib_qp_event_init(); 4930 if (ret) 4931 goto qp_event_err; 4932 4933 mlx5_ib_odp_init(); 4934 ret = mlx5r_rep_init(); 4935 if (ret) 4936 goto rep_err; 4937 ret = mlx5_data_direct_driver_register(); 4938 if (ret) 4939 goto dd_err; 4940 ret = auxiliary_driver_register(&mlx5r_mp_driver); 4941 if (ret) 4942 goto mp_err; 4943 ret = auxiliary_driver_register(&mlx5r_driver); 4944 if (ret) 4945 goto drv_err; 4946 4947 return 0; 4948 4949 drv_err: 4950 auxiliary_driver_unregister(&mlx5r_mp_driver); 4951 mp_err: 4952 mlx5_data_direct_driver_unregister(); 4953 dd_err: 4954 mlx5r_rep_cleanup(); 4955 rep_err: 4956 mlx5_ib_qp_event_cleanup(); 4957 qp_event_err: 4958 destroy_workqueue(mlx5_ib_event_wq); 4959 free_page((unsigned long)xlt_emergency_page); 4960 return ret; 4961 } 4962 4963 static void __exit mlx5_ib_cleanup(void) 4964 { 4965 mlx5_data_direct_driver_unregister(); 4966 auxiliary_driver_unregister(&mlx5r_driver); 4967 auxiliary_driver_unregister(&mlx5r_mp_driver); 4968 mlx5r_rep_cleanup(); 4969 4970 mlx5_ib_qp_event_cleanup(); 4971 destroy_workqueue(mlx5_ib_event_wq); 4972 free_page((unsigned long)xlt_emergency_page); 4973 } 4974 4975 module_init(mlx5_ib_init); 4976 module_exit(mlx5_ib_cleanup); 4977