drivers/infiniband/hw/mlx5/main.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved.
   4  */
   5
   6 #include <linux/debugfs.h>
   7 #include <linux/highmem.h>
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/errno.h>
  11 #include <linux/pci.h>
  12 #include <linux/dma-mapping.h>
  13 #include <linux/slab.h>
  14 #include <linux/bitmap.h>
  15 #include <linux/sched.h>
  16 #include <linux/sched/mm.h>
  17 #include <linux/sched/task.h>
  18 #include <linux/delay.h>
  19 #include <rdma/ib_user_verbs.h>
  20 #include <rdma/ib_addr.h>
  21 #include <rdma/ib_cache.h>
  22 #include <linux/mlx5/port.h>
  23 #include <linux/mlx5/vport.h>
  24 #include <linux/mlx5/fs.h>
  25 #include <linux/mlx5/eswitch.h>
  26 #include <linux/list.h>
  27 #include <rdma/ib_smi.h>
  28 #include <rdma/ib_umem.h>
  29 #include <rdma/lag.h>
  30 #include <linux/in.h>
  31 #include <linux/etherdevice.h>
  32 #include "mlx5_ib.h"
  33 #include "ib_rep.h"
  34 #include "cmd.h"
  35 #include "devx.h"
  36 #include "fs.h"
  37 #include "srq.h"
  38 #include "qp.h"
  39 #include "wr.h"
  40 #include "restrack.h"
  41 #include "counters.h"
  42 #include <linux/mlx5/accel.h>
  43 #include <rdma/uverbs_std_types.h>
  44 #include <rdma/mlx5_user_ioctl_verbs.h>
  45 #include <rdma/mlx5_user_ioctl_cmds.h>
  46 #include <rdma/ib_umem_odp.h>
  47
  48 #define UVERBS_MODULE_NAME mlx5_ib
  49 #include <rdma/uverbs_named_ioctl.h>
  50
  51 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
  52 MODULE_DESCRIPTION("Mellanox 5th generation network adapters (ConnectX series) IB driver");
  53 MODULE_LICENSE("Dual BSD/GPL");
  54
  55 struct mlx5_ib_event_work {
  56         struct work_struct      work;
  57         union {
  58                 struct mlx5_ib_dev            *dev;
  59                 struct mlx5_ib_multiport_info *mpi;
  60         };
  61         bool                    is_slave;
  62         unsigned int            event;
  63         void                    *param;
  64 };
  65
  66 enum {
  67         MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3,
  68 };
  69
  70 static struct workqueue_struct *mlx5_ib_event_wq;
  71 static LIST_HEAD(mlx5_ib_unaffiliated_port_list);
  72 static LIST_HEAD(mlx5_ib_dev_list);
  73 /*
  74  * This mutex should be held when accessing either of the above lists
  75  */
  76 static DEFINE_MUTEX(mlx5_ib_multiport_mutex);
  77
  78 /* We can't use an array for xlt_emergency_page because dma_map_single
  79  * doesn't work on kernel modules memory
  80  */
  81 static unsigned long xlt_emergency_page;
  82 static struct mutex xlt_emergency_page_mutex;
  83
  84 struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi)
  85 {
  86         struct mlx5_ib_dev *dev;
  87
  88         mutex_lock(&mlx5_ib_multiport_mutex);
  89         dev = mpi->ibdev;
  90         mutex_unlock(&mlx5_ib_multiport_mutex);
  91         return dev;
  92 }
  93
  94 static enum rdma_link_layer
  95 mlx5_port_type_cap_to_rdma_ll(int port_type_cap)
  96 {
  97         switch (port_type_cap) {
  98         case MLX5_CAP_PORT_TYPE_IB:
  99                 return IB_LINK_LAYER_INFINIBAND;
 100         case MLX5_CAP_PORT_TYPE_ETH:
 101                 return IB_LINK_LAYER_ETHERNET;
 102         default:
 103                 return IB_LINK_LAYER_UNSPECIFIED;
 104         }
 105 }
 106
 107 static enum rdma_link_layer
 108 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num)
 109 {
 110         struct mlx5_ib_dev *dev = to_mdev(device);
 111         int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type);
 112
 113         return mlx5_port_type_cap_to_rdma_ll(port_type_cap);
 114 }
 115
 116 static int get_port_state(struct ib_device *ibdev,
 117                           u8 port_num,
 118                           enum ib_port_state *state)
 119 {
 120         struct ib_port_attr attr;
 121         int ret;
 122
 123         memset(&attr, 0, sizeof(attr));
 124         ret = ibdev->ops.query_port(ibdev, port_num, &attr);
 125         if (!ret)
 126                 *state = attr.state;
 127         return ret;
 128 }
 129
 130 static struct mlx5_roce *mlx5_get_rep_roce(struct mlx5_ib_dev *dev,
 131                                            struct net_device *ndev,
 132                                            u8 *port_num)
 133 {
 134         struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
 135         struct net_device *rep_ndev;
 136         struct mlx5_ib_port *port;
 137         int i;
 138
 139         for (i = 0; i < dev->num_ports; i++) {
 140                 port  = &dev->port[i];
 141                 if (!port->rep)
 142                         continue;
 143
 144                 read_lock(&port->roce.netdev_lock);
 145                 rep_ndev = mlx5_ib_get_rep_netdev(esw,
 146                                                   port->rep->vport);
 147                 if (rep_ndev == ndev) {
 148                         read_unlock(&port->roce.netdev_lock);
 149                         *port_num = i + 1;
 150                         return &port->roce;
 151                 }
 152                 read_unlock(&port->roce.netdev_lock);
 153         }
 154
 155         return NULL;
 156 }
 157
 158 static int mlx5_netdev_event(struct notifier_block *this,
 159                              unsigned long event, void *ptr)
 160 {
 161         struct mlx5_roce *roce = container_of(this, struct mlx5_roce, nb);
 162         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 163         u8 port_num = roce->native_port_num;
 164         struct mlx5_core_dev *mdev;
 165         struct mlx5_ib_dev *ibdev;
 166
 167         ibdev = roce->dev;
 168         mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL);
 169         if (!mdev)
 170                 return NOTIFY_DONE;
 171
 172         switch (event) {
 173         case NETDEV_REGISTER:
 174                 /* Should already be registered during the load */
 175                 if (ibdev->is_rep)
 176                         break;
 177                 write_lock(&roce->netdev_lock);
 178                 if (ndev->dev.parent == mdev->device)
 179                         roce->netdev = ndev;
 180                 write_unlock(&roce->netdev_lock);
 181                 break;
 182
 183         case NETDEV_UNREGISTER:
 184                 /* In case of reps, ib device goes away before the netdevs */
 185                 write_lock(&roce->netdev_lock);
 186                 if (roce->netdev == ndev)
 187                         roce->netdev = NULL;
 188                 write_unlock(&roce->netdev_lock);
 189                 break;
 190
 191         case NETDEV_CHANGE:
 192         case NETDEV_UP:
 193         case NETDEV_DOWN: {
 194                 struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(mdev);
 195                 struct net_device *upper = NULL;
 196
 197                 if (lag_ndev) {
 198                         upper = netdev_master_upper_dev_get(lag_ndev);
 199                         dev_put(lag_ndev);
 200                 }
 201
 202                 if (ibdev->is_rep)
 203                         roce = mlx5_get_rep_roce(ibdev, ndev, &port_num);
 204                 if (!roce)
 205                         return NOTIFY_DONE;
 206                 if ((upper == ndev || (!upper && ndev == roce->netdev))
 207                     && ibdev->ib_active) {
 208                         struct ib_event ibev = { };
 209                         enum ib_port_state port_state;
 210
 211                         if (get_port_state(&ibdev->ib_dev, port_num,
 212                                            &port_state))
 213                                 goto done;
 214
 215                         if (roce->last_port_state == port_state)
 216                                 goto done;
 217
 218                         roce->last_port_state = port_state;
 219                         ibev.device = &ibdev->ib_dev;
 220                         if (port_state == IB_PORT_DOWN)
 221                                 ibev.event = IB_EVENT_PORT_ERR;
 222                         else if (port_state == IB_PORT_ACTIVE)
 223                                 ibev.event = IB_EVENT_PORT_ACTIVE;
 224                         else
 225                                 goto done;
 226
 227                         ibev.element.port_num = port_num;
 228                         ib_dispatch_event(&ibev);
 229                 }
 230                 break;
 231         }
 232
 233         default:
 234                 break;
 235         }
 236 done:
 237         mlx5_ib_put_native_port_mdev(ibdev, port_num);
 238         return NOTIFY_DONE;
 239 }
 240
 241 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
 242                                              u8 port_num)
 243 {
 244         struct mlx5_ib_dev *ibdev = to_mdev(device);
 245         struct net_device *ndev;
 246         struct mlx5_core_dev *mdev;
 247
 248         mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL);
 249         if (!mdev)
 250                 return NULL;
 251
 252         ndev = mlx5_lag_get_roce_netdev(mdev);
 253         if (ndev)
 254                 goto out;
 255
 256         /* Ensure ndev does not disappear before we invoke dev_hold()
 257          */
 258         read_lock(&ibdev->port[port_num - 1].roce.netdev_lock);
 259         ndev = ibdev->port[port_num - 1].roce.netdev;
 260         if (ndev)
 261                 dev_hold(ndev);
 262         read_unlock(&ibdev->port[port_num - 1].roce.netdev_lock);
 263
 264 out:
 265         mlx5_ib_put_native_port_mdev(ibdev, port_num);
 266         return ndev;
 267 }
 268
 269 struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *ibdev,
 270                                                    u8 ib_port_num,
 271                                                    u8 *native_port_num)
 272 {
 273         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev,
 274                                                           ib_port_num);
 275         struct mlx5_core_dev *mdev = NULL;
 276         struct mlx5_ib_multiport_info *mpi;
 277         struct mlx5_ib_port *port;
 278
 279         if (!mlx5_core_mp_enabled(ibdev->mdev) ||
 280             ll != IB_LINK_LAYER_ETHERNET) {
 281                 if (native_port_num)
 282                         *native_port_num = ib_port_num;
 283                 return ibdev->mdev;
 284         }
 285
 286         if (native_port_num)
 287                 *native_port_num = 1;
 288
 289         port = &ibdev->port[ib_port_num - 1];
 290         spin_lock(&port->mp.mpi_lock);
 291         mpi = ibdev->port[ib_port_num - 1].mp.mpi;
 292         if (mpi && !mpi->unaffiliate) {
 293                 mdev = mpi->mdev;
 294                 /* If it's the master no need to refcount, it'll exist
 295                  * as long as the ib_dev exists.
 296                  */
 297                 if (!mpi->is_master)
 298                         mpi->mdev_refcnt++;
 299         }
 300         spin_unlock(&port->mp.mpi_lock);
 301
 302         return mdev;
 303 }
 304
 305 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *ibdev, u8 port_num)
 306 {
 307         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev,
 308                                                           port_num);
 309         struct mlx5_ib_multiport_info *mpi;
 310         struct mlx5_ib_port *port;
 311
 312         if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
 313                 return;
 314
 315         port = &ibdev->port[port_num - 1];
 316
 317         spin_lock(&port->mp.mpi_lock);
 318         mpi = ibdev->port[port_num - 1].mp.mpi;
 319         if (mpi->is_master)
 320                 goto out;
 321
 322         mpi->mdev_refcnt--;
 323         if (mpi->unaffiliate)
 324                 complete(&mpi->unref_comp);
 325 out:
 326         spin_unlock(&port->mp.mpi_lock);
 327 }
 328
 329 static int translate_eth_legacy_proto_oper(u32 eth_proto_oper,
 330                                            u16 *active_speed, u8 *active_width)
 331 {
 332         switch (eth_proto_oper) {
 333         case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII):
 334         case MLX5E_PROT_MASK(MLX5E_1000BASE_KX):
 335         case MLX5E_PROT_MASK(MLX5E_100BASE_TX):
 336         case MLX5E_PROT_MASK(MLX5E_1000BASE_T):
 337                 *active_width = IB_WIDTH_1X;
 338                 *active_speed = IB_SPEED_SDR;
 339                 break;
 340         case MLX5E_PROT_MASK(MLX5E_10GBASE_T):
 341         case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4):
 342         case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4):
 343         case MLX5E_PROT_MASK(MLX5E_10GBASE_KR):
 344         case MLX5E_PROT_MASK(MLX5E_10GBASE_CR):
 345         case MLX5E_PROT_MASK(MLX5E_10GBASE_SR):
 346         case MLX5E_PROT_MASK(MLX5E_10GBASE_ER):
 347                 *active_width = IB_WIDTH_1X;
 348                 *active_speed = IB_SPEED_QDR;
 349                 break;
 350         case MLX5E_PROT_MASK(MLX5E_25GBASE_CR):
 351         case MLX5E_PROT_MASK(MLX5E_25GBASE_KR):
 352         case MLX5E_PROT_MASK(MLX5E_25GBASE_SR):
 353                 *active_width = IB_WIDTH_1X;
 354                 *active_speed = IB_SPEED_EDR;
 355                 break;
 356         case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4):
 357         case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4):
 358         case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4):
 359         case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4):
 360                 *active_width = IB_WIDTH_4X;
 361                 *active_speed = IB_SPEED_QDR;
 362                 break;
 363         case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2):
 364         case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2):
 365         case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2):
 366                 *active_width = IB_WIDTH_1X;
 367                 *active_speed = IB_SPEED_HDR;
 368                 break;
 369         case MLX5E_PROT_MASK(MLX5E_56GBASE_R4):
 370                 *active_width = IB_WIDTH_4X;
 371                 *active_speed = IB_SPEED_FDR;
 372                 break;
 373         case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4):
 374         case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4):
 375         case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4):
 376         case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4):
 377                 *active_width = IB_WIDTH_4X;
 378                 *active_speed = IB_SPEED_EDR;
 379                 break;
 380         default:
 381                 return -EINVAL;
 382         }
 383
 384         return 0;
 385 }
 386
 387 static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u16 *active_speed,
 388                                         u8 *active_width)
 389 {
 390         switch (eth_proto_oper) {
 391         case MLX5E_PROT_MASK(MLX5E_SGMII_100M):
 392         case MLX5E_PROT_MASK(MLX5E_1000BASE_X_SGMII):
 393                 *active_width = IB_WIDTH_1X;
 394                 *active_speed = IB_SPEED_SDR;
 395                 break;
 396         case MLX5E_PROT_MASK(MLX5E_5GBASE_R):
 397                 *active_width = IB_WIDTH_1X;
 398                 *active_speed = IB_SPEED_DDR;
 399                 break;
 400         case MLX5E_PROT_MASK(MLX5E_10GBASE_XFI_XAUI_1):
 401                 *active_width = IB_WIDTH_1X;
 402                 *active_speed = IB_SPEED_QDR;
 403                 break;
 404         case MLX5E_PROT_MASK(MLX5E_40GBASE_XLAUI_4_XLPPI_4):
 405                 *active_width = IB_WIDTH_4X;
 406                 *active_speed = IB_SPEED_QDR;
 407                 break;
 408         case MLX5E_PROT_MASK(MLX5E_25GAUI_1_25GBASE_CR_KR):
 409                 *active_width = IB_WIDTH_1X;
 410                 *active_speed = IB_SPEED_EDR;
 411                 break;
 412         case MLX5E_PROT_MASK(MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2):
 413                 *active_width = IB_WIDTH_2X;
 414                 *active_speed = IB_SPEED_EDR;
 415                 break;
 416         case MLX5E_PROT_MASK(MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR):
 417                 *active_width = IB_WIDTH_1X;
 418                 *active_speed = IB_SPEED_HDR;
 419                 break;
 420         case MLX5E_PROT_MASK(MLX5E_CAUI_4_100GBASE_CR4_KR4):
 421                 *active_width = IB_WIDTH_4X;
 422                 *active_speed = IB_SPEED_EDR;
 423                 break;
 424         case MLX5E_PROT_MASK(MLX5E_100GAUI_2_100GBASE_CR2_KR2):
 425                 *active_width = IB_WIDTH_2X;
 426                 *active_speed = IB_SPEED_HDR;
 427                 break;
 428         case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4):
 429                 *active_width = IB_WIDTH_4X;
 430                 *active_speed = IB_SPEED_HDR;
 431                 break;
 432         default:
 433                 return -EINVAL;
 434         }
 435
 436         return 0;
 437 }
 438
 439 static int translate_eth_proto_oper(u32 eth_proto_oper, u16 *active_speed,
 440                                     u8 *active_width, bool ext)
 441 {
 442         return ext ?
 443                 translate_eth_ext_proto_oper(eth_proto_oper, active_speed,
 444                                              active_width) :
 445                 translate_eth_legacy_proto_oper(eth_proto_oper, active_speed,
 446                                                 active_width);
 447 }
 448
 449 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
 450                                 struct ib_port_attr *props)
 451 {
 452         struct mlx5_ib_dev *dev = to_mdev(device);
 453         u32 out[MLX5_ST_SZ_DW(ptys_reg)] = {0};
 454         struct mlx5_core_dev *mdev;
 455         struct net_device *ndev, *upper;
 456         enum ib_mtu ndev_ib_mtu;
 457         bool put_mdev = true;
 458         u16 qkey_viol_cntr;
 459         u32 eth_prot_oper;
 460         u8 mdev_port_num;
 461         bool ext;
 462         int err;
 463
 464         mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
 465         if (!mdev) {
 466                 /* This means the port isn't affiliated yet. Get the
 467                  * info for the master port instead.
 468                  */
 469                 put_mdev = false;
 470                 mdev = dev->mdev;
 471                 mdev_port_num = 1;
 472                 port_num = 1;
 473         }
 474
 475         /* Possible bad flows are checked before filling out props so in case
 476          * of an error it will still be zeroed out.
 477          * Use native port in case of reps
 478          */
 479         if (dev->is_rep)
 480                 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN,
 481                                            1);
 482         else
 483                 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN,
 484                                            mdev_port_num);
 485         if (err)
 486                 goto out;
 487         ext = !!MLX5_GET_ETH_PROTO(ptys_reg, out, true, eth_proto_capability);
 488         eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper);
 489
 490         props->active_width     = IB_WIDTH_4X;
 491         props->active_speed     = IB_SPEED_QDR;
 492
 493         translate_eth_proto_oper(eth_prot_oper, &props->active_speed,
 494                                  &props->active_width, ext);
 495
 496         props->port_cap_flags |= IB_PORT_CM_SUP;
 497         props->ip_gids = true;
 498
 499         props->gid_tbl_len      = MLX5_CAP_ROCE(dev->mdev,
 500                                                 roce_address_table_size);
 501         props->max_mtu          = IB_MTU_4096;
 502         props->max_msg_sz       = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
 503         props->pkey_tbl_len     = 1;
 504         props->state            = IB_PORT_DOWN;
 505         props->phys_state       = IB_PORT_PHYS_STATE_DISABLED;
 506
 507         mlx5_query_nic_vport_qkey_viol_cntr(mdev, &qkey_viol_cntr);
 508         props->qkey_viol_cntr = qkey_viol_cntr;
 509
 510         /* If this is a stub query for an unaffiliated port stop here */
 511         if (!put_mdev)
 512                 goto out;
 513
 514         ndev = mlx5_ib_get_netdev(device, port_num);
 515         if (!ndev)
 516                 goto out;
 517
 518         if (dev->lag_active) {
 519                 rcu_read_lock();
 520                 upper = netdev_master_upper_dev_get_rcu(ndev);
 521                 if (upper) {
 522                         dev_put(ndev);
 523                         ndev = upper;
 524                         dev_hold(ndev);
 525                 }
 526                 rcu_read_unlock();
 527         }
 528
 529         if (netif_running(ndev) && netif_carrier_ok(ndev)) {
 530                 props->state      = IB_PORT_ACTIVE;
 531                 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
 532         }
 533
 534         ndev_ib_mtu = iboe_get_mtu(ndev->mtu);
 535
 536         dev_put(ndev);
 537
 538         props->active_mtu       = min(props->max_mtu, ndev_ib_mtu);
 539 out:
 540         if (put_mdev)
 541                 mlx5_ib_put_native_port_mdev(dev, port_num);
 542         return err;
 543 }
 544
 545 static int set_roce_addr(struct mlx5_ib_dev *dev, u8 port_num,
 546                          unsigned int index, const union ib_gid *gid,
 547                          const struct ib_gid_attr *attr)
 548 {
 549         enum ib_gid_type gid_type = IB_GID_TYPE_ROCE;
 550         u16 vlan_id = 0xffff;
 551         u8 roce_version = 0;
 552         u8 roce_l3_type = 0;
 553         u8 mac[ETH_ALEN];
 554         int ret;
 555
 556         if (gid) {
 557                 gid_type = attr->gid_type;
 558                 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]);
 559                 if (ret)
 560                         return ret;
 561         }
 562
 563         switch (gid_type) {
 564         case IB_GID_TYPE_ROCE:
 565                 roce_version = MLX5_ROCE_VERSION_1;
 566                 break;
 567         case IB_GID_TYPE_ROCE_UDP_ENCAP:
 568                 roce_version = MLX5_ROCE_VERSION_2;
 569                 if (ipv6_addr_v4mapped((void *)gid))
 570                         roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4;
 571                 else
 572                         roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6;
 573                 break;
 574
 575         default:
 576                 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type);
 577         }
 578
 579         return mlx5_core_roce_gid_set(dev->mdev, index, roce_version,
 580                                       roce_l3_type, gid->raw, mac,
 581                                       vlan_id < VLAN_CFI_MASK, vlan_id,
 582                                       port_num);
 583 }
 584
 585 static int mlx5_ib_add_gid(const struct ib_gid_attr *attr,
 586                            __always_unused void **context)
 587 {
 588         return set_roce_addr(to_mdev(attr->device), attr->port_num,
 589                              attr->index, &attr->gid, attr);
 590 }
 591
 592 static int mlx5_ib_del_gid(const struct ib_gid_attr *attr,
 593                            __always_unused void **context)
 594 {
 595         return set_roce_addr(to_mdev(attr->device), attr->port_num,
 596                              attr->index, NULL, NULL);
 597 }
 598
 599 __be16 mlx5_get_roce_udp_sport_min(const struct mlx5_ib_dev *dev,
 600                                    const struct ib_gid_attr *attr)
 601 {
 602         if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
 603                 return 0;
 604
 605         return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
 606 }
 607
 608 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
 609 {
 610         if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)
 611                 return !MLX5_CAP_GEN(dev->mdev, ib_virt);
 612         return 0;
 613 }
 614
 615 enum {
 616         MLX5_VPORT_ACCESS_METHOD_MAD,
 617         MLX5_VPORT_ACCESS_METHOD_HCA,
 618         MLX5_VPORT_ACCESS_METHOD_NIC,
 619 };
 620
 621 static int mlx5_get_vport_access_method(struct ib_device *ibdev)
 622 {
 623         if (mlx5_use_mad_ifc(to_mdev(ibdev)))
 624                 return MLX5_VPORT_ACCESS_METHOD_MAD;
 625
 626         if (mlx5_ib_port_link_layer(ibdev, 1) ==
 627             IB_LINK_LAYER_ETHERNET)
 628                 return MLX5_VPORT_ACCESS_METHOD_NIC;
 629
 630         return MLX5_VPORT_ACCESS_METHOD_HCA;
 631 }
 632
 633 static void get_atomic_caps(struct mlx5_ib_dev *dev,
 634                             u8 atomic_size_qp,
 635                             struct ib_device_attr *props)
 636 {
 637         u8 tmp;
 638         u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
 639         u8 atomic_req_8B_endianness_mode =
 640                 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode);
 641
 642         /* Check if HW supports 8 bytes standard atomic operations and capable
 643          * of host endianness respond
 644          */
 645         tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD;
 646         if (((atomic_operations & tmp) == tmp) &&
 647             (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) &&
 648             (atomic_req_8B_endianness_mode)) {
 649                 props->atomic_cap = IB_ATOMIC_HCA;
 650         } else {
 651                 props->atomic_cap = IB_ATOMIC_NONE;
 652         }
 653 }
 654
 655 static void get_atomic_caps_qp(struct mlx5_ib_dev *dev,
 656                                struct ib_device_attr *props)
 657 {
 658         u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
 659
 660         get_atomic_caps(dev, atomic_size_qp, props);
 661 }
 662
 663 static int mlx5_query_system_image_guid(struct ib_device *ibdev,
 664                                         __be64 *sys_image_guid)
 665 {
 666         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 667         struct mlx5_core_dev *mdev = dev->mdev;
 668         u64 tmp;
 669         int err;
 670
 671         switch (mlx5_get_vport_access_method(ibdev)) {
 672         case MLX5_VPORT_ACCESS_METHOD_MAD:
 673                 return mlx5_query_mad_ifc_system_image_guid(ibdev,
 674                                                             sys_image_guid);
 675
 676         case MLX5_VPORT_ACCESS_METHOD_HCA:
 677                 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
 678                 break;
 679
 680         case MLX5_VPORT_ACCESS_METHOD_NIC:
 681                 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
 682                 break;
 683
 684         default:
 685                 return -EINVAL;
 686         }
 687
 688         if (!err)
 689                 *sys_image_guid = cpu_to_be64(tmp);
 690
 691         return err;
 692
 693 }
 694
 695 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
 696                                 u16 *max_pkeys)
 697 {
 698         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 699         struct mlx5_core_dev *mdev = dev->mdev;
 700
 701         switch (mlx5_get_vport_access_method(ibdev)) {
 702         case MLX5_VPORT_ACCESS_METHOD_MAD:
 703                 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
 704
 705         case MLX5_VPORT_ACCESS_METHOD_HCA:
 706         case MLX5_VPORT_ACCESS_METHOD_NIC:
 707                 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
 708                                                 pkey_table_size));
 709                 return 0;
 710
 711         default:
 712                 return -EINVAL;
 713         }
 714 }
 715
 716 static int mlx5_query_vendor_id(struct ib_device *ibdev,
 717                                 u32 *vendor_id)
 718 {
 719         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 720
 721         switch (mlx5_get_vport_access_method(ibdev)) {
 722         case MLX5_VPORT_ACCESS_METHOD_MAD:
 723                 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
 724
 725         case MLX5_VPORT_ACCESS_METHOD_HCA:
 726         case MLX5_VPORT_ACCESS_METHOD_NIC:
 727                 return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
 728
 729         default:
 730                 return -EINVAL;
 731         }
 732 }
 733
 734 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
 735                                 __be64 *node_guid)
 736 {
 737         u64 tmp;
 738         int err;
 739
 740         switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
 741         case MLX5_VPORT_ACCESS_METHOD_MAD:
 742                 return mlx5_query_mad_ifc_node_guid(dev, node_guid);
 743
 744         case MLX5_VPORT_ACCESS_METHOD_HCA:
 745                 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
 746                 break;
 747
 748         case MLX5_VPORT_ACCESS_METHOD_NIC:
 749                 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
 750                 break;
 751
 752         default:
 753                 return -EINVAL;
 754         }
 755
 756         if (!err)
 757                 *node_guid = cpu_to_be64(tmp);
 758
 759         return err;
 760 }
 761
 762 struct mlx5_reg_node_desc {
 763         u8      desc[IB_DEVICE_NODE_DESC_MAX];
 764 };
 765
 766 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
 767 {
 768         struct mlx5_reg_node_desc in;
 769
 770         if (mlx5_use_mad_ifc(dev))
 771                 return mlx5_query_mad_ifc_node_desc(dev, node_desc);
 772
 773         memset(&in, 0, sizeof(in));
 774
 775         return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
 776                                     sizeof(struct mlx5_reg_node_desc),
 777                                     MLX5_REG_NODE_DESC, 0, 0);
 778 }
 779
 780 static int mlx5_ib_query_device(struct ib_device *ibdev,
 781                                 struct ib_device_attr *props,
 782                                 struct ib_udata *uhw)
 783 {
 784         size_t uhw_outlen = (uhw) ? uhw->outlen : 0;
 785         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 786         struct mlx5_core_dev *mdev = dev->mdev;
 787         int err = -ENOMEM;
 788         int max_sq_desc;
 789         int max_rq_sg;
 790         int max_sq_sg;
 791         u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
 792         bool raw_support = !mlx5_core_mp_enabled(mdev);
 793         struct mlx5_ib_query_device_resp resp = {};
 794         size_t resp_len;
 795         u64 max_tso;
 796
 797         resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length);
 798         if (uhw_outlen && uhw_outlen < resp_len)
 799                 return -EINVAL;
 800
 801         resp.response_length = resp_len;
 802
 803         if (uhw && uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen))
 804                 return -EINVAL;
 805
 806         memset(props, 0, sizeof(*props));
 807         err = mlx5_query_system_image_guid(ibdev,
 808                                            &props->sys_image_guid);
 809         if (err)
 810                 return err;
 811
 812         err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
 813         if (err)
 814                 return err;
 815
 816         err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
 817         if (err)
 818                 return err;
 819
 820         props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
 821                 (fw_rev_min(dev->mdev) << 16) |
 822                 fw_rev_sub(dev->mdev);
 823         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 824                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 825                 IB_DEVICE_SYS_IMAGE_GUID                |
 826                 IB_DEVICE_RC_RNR_NAK_GEN;
 827
 828         if (MLX5_CAP_GEN(mdev, pkv))
 829                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 830         if (MLX5_CAP_GEN(mdev, qkv))
 831                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 832         if (MLX5_CAP_GEN(mdev, apm))
 833                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 834         if (MLX5_CAP_GEN(mdev, xrc))
 835                 props->device_cap_flags |= IB_DEVICE_XRC;
 836         if (MLX5_CAP_GEN(mdev, imaicl)) {
 837                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW |
 838                                            IB_DEVICE_MEM_WINDOW_TYPE_2B;
 839                 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
 840                 /* We support 'Gappy' memory registration too */
 841                 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
 842         }
 843         /* IB_WR_REG_MR always requires changing the entity size with UMR */
 844         if (!MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled))
 845                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 846         if (MLX5_CAP_GEN(mdev, sho)) {
 847                 props->device_cap_flags |= IB_DEVICE_INTEGRITY_HANDOVER;
 848                 /* At this stage no support for signature handover */
 849                 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
 850                                       IB_PROT_T10DIF_TYPE_2 |
 851                                       IB_PROT_T10DIF_TYPE_3;
 852                 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
 853                                        IB_GUARD_T10DIF_CSUM;
 854         }
 855         if (MLX5_CAP_GEN(mdev, block_lb_mc))
 856                 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 857
 858         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) {
 859                 if (MLX5_CAP_ETH(mdev, csum_cap)) {
 860                         /* Legacy bit to support old userspace libraries */
 861                         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 862                         props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM;
 863                 }
 864
 865                 if (MLX5_CAP_ETH(dev->mdev, vlan_cap))
 866                         props->raw_packet_caps |=
 867                                 IB_RAW_PACKET_CAP_CVLAN_STRIPPING;
 868
 869                 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) {
 870                         max_tso = MLX5_CAP_ETH(mdev, max_lso_cap);
 871                         if (max_tso) {
 872                                 resp.tso_caps.max_tso = 1 << max_tso;
 873                                 resp.tso_caps.supported_qpts |=
 874                                         1 << IB_QPT_RAW_PACKET;
 875                                 resp.response_length += sizeof(resp.tso_caps);
 876                         }
 877                 }
 878
 879                 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) {
 880                         resp.rss_caps.rx_hash_function =
 881                                                 MLX5_RX_HASH_FUNC_TOEPLITZ;
 882                         resp.rss_caps.rx_hash_fields_mask =
 883                                                 MLX5_RX_HASH_SRC_IPV4 |
 884                                                 MLX5_RX_HASH_DST_IPV4 |
 885                                                 MLX5_RX_HASH_SRC_IPV6 |
 886                                                 MLX5_RX_HASH_DST_IPV6 |
 887                                                 MLX5_RX_HASH_SRC_PORT_TCP |
 888                                                 MLX5_RX_HASH_DST_PORT_TCP |
 889                                                 MLX5_RX_HASH_SRC_PORT_UDP |
 890                                                 MLX5_RX_HASH_DST_PORT_UDP |
 891                                                 MLX5_RX_HASH_INNER;
 892                         if (mlx5_accel_ipsec_device_caps(dev->mdev) &
 893                             MLX5_ACCEL_IPSEC_CAP_DEVICE)
 894                                 resp.rss_caps.rx_hash_fields_mask |=
 895                                         MLX5_RX_HASH_IPSEC_SPI;
 896                         resp.response_length += sizeof(resp.rss_caps);
 897                 }
 898         } else {
 899                 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen)
 900                         resp.response_length += sizeof(resp.tso_caps);
 901                 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen)
 902                         resp.response_length += sizeof(resp.rss_caps);
 903         }
 904
 905         if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
 906                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 907                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 908         }
 909
 910         if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) &&
 911             MLX5_CAP_GEN(dev->mdev, general_notification_event) &&
 912             raw_support)
 913                 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP;
 914
 915         if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
 916             MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap))
 917                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 918
 919         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
 920             MLX5_CAP_ETH(dev->mdev, scatter_fcs) &&
 921             raw_support) {
 922                 /* Legacy bit to support old userspace libraries */
 923                 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS;
 924                 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
 925         }
 926
 927         if (MLX5_CAP_DEV_MEM(mdev, memic)) {
 928                 props->max_dm_size =
 929                         MLX5_CAP_DEV_MEM(mdev, max_memic_size);
 930         }
 931
 932         if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS))
 933                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 934
 935         if (MLX5_CAP_GEN(mdev, end_pad))
 936                 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING;
 937
 938         props->vendor_part_id      = mdev->pdev->device;
 939         props->hw_ver              = mdev->pdev->revision;
 940
 941         props->max_mr_size         = ~0ull;
 942         props->page_size_cap       = ~(min_page_size - 1);
 943         props->max_qp              = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
 944         props->max_qp_wr           = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
 945         max_rq_sg =  MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
 946                      sizeof(struct mlx5_wqe_data_seg);
 947         max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512);
 948         max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) -
 949                      sizeof(struct mlx5_wqe_raddr_seg)) /
 950                 sizeof(struct mlx5_wqe_data_seg);
 951         props->max_send_sge = max_sq_sg;
 952         props->max_recv_sge = max_rq_sg;
 953         props->max_sge_rd          = MLX5_MAX_SGE_RD;
 954         props->max_cq              = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
 955         props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1;
 956         props->max_mr              = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
 957         props->max_pd              = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
 958         props->max_qp_rd_atom      = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
 959         props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
 960         props->max_srq             = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
 961         props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
 962         props->local_ca_ack_delay  = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
 963         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 964         props->max_srq_sge         = max_rq_sg - 1;
 965         props->max_fast_reg_page_list_len =
 966                 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size);
 967         props->max_pi_fast_reg_page_list_len =
 968                 props->max_fast_reg_page_list_len / 2;
 969         props->max_sgl_rd =
 970                 MLX5_CAP_GEN(mdev, max_sgl_for_optimized_performance);
 971         get_atomic_caps_qp(dev, props);
 972         props->masked_atomic_cap   = IB_ATOMIC_NONE;
 973         props->max_mcast_grp       = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
 974         props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
 975         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 976                                            props->max_mcast_grp;
 977         props->max_ah = INT_MAX;
 978         props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
 979         props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
 980
 981         if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) {
 982                 if (dev->odp_caps.general_caps & IB_ODP_SUPPORT)
 983                         props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
 984                 props->odp_caps = dev->odp_caps;
 985                 if (!uhw) {
 986                         /* ODP for kernel QPs is not implemented for receive
 987                          * WQEs and SRQ WQEs
 988                          */
 989                         props->odp_caps.per_transport_caps.rc_odp_caps &=
 990                                 ~(IB_ODP_SUPPORT_READ |
 991                                   IB_ODP_SUPPORT_SRQ_RECV);
 992                         props->odp_caps.per_transport_caps.uc_odp_caps &=
 993                                 ~(IB_ODP_SUPPORT_READ |
 994                                   IB_ODP_SUPPORT_SRQ_RECV);
 995                         props->odp_caps.per_transport_caps.ud_odp_caps &=
 996                                 ~(IB_ODP_SUPPORT_READ |
 997                                   IB_ODP_SUPPORT_SRQ_RECV);
 998                         props->odp_caps.per_transport_caps.xrc_odp_caps &=
 999                                 ~(IB_ODP_SUPPORT_READ |
1000                                   IB_ODP_SUPPORT_SRQ_RECV);
1001                 }
1002         }
1003
1004         if (MLX5_CAP_GEN(mdev, cd))
1005                 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL;
1006
1007         if (mlx5_core_is_vf(mdev))
1008                 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
1009
1010         if (mlx5_ib_port_link_layer(ibdev, 1) ==
1011             IB_LINK_LAYER_ETHERNET && raw_support) {
1012                 props->rss_caps.max_rwq_indirection_tables =
1013                         1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt);
1014                 props->rss_caps.max_rwq_indirection_table_size =
1015                         1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size);
1016                 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
1017                 props->max_wq_type_rq =
1018                         1 << MLX5_CAP_GEN(dev->mdev, log_max_rq);
1019         }
1020
1021         if (MLX5_CAP_GEN(mdev, tag_matching)) {
1022                 props->tm_caps.max_num_tags =
1023                         (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1;
1024                 props->tm_caps.max_ops =
1025                         1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
1026                 props->tm_caps.max_sge = MLX5_TM_MAX_SGE;
1027         }
1028
1029         if (MLX5_CAP_GEN(mdev, tag_matching) &&
1030             MLX5_CAP_GEN(mdev, rndv_offload_rc)) {
1031                 props->tm_caps.flags = IB_TM_CAP_RNDV_RC;
1032                 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE;
1033         }
1034
1035         if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) {
1036                 props->cq_caps.max_cq_moderation_count =
1037                                                 MLX5_MAX_CQ_COUNT;
1038                 props->cq_caps.max_cq_moderation_period =
1039                                                 MLX5_MAX_CQ_PERIOD;
1040         }
1041
1042         if (offsetofend(typeof(resp), cqe_comp_caps) <= uhw_outlen) {
1043                 resp.response_length += sizeof(resp.cqe_comp_caps);
1044
1045                 if (MLX5_CAP_GEN(dev->mdev, cqe_compression)) {
1046                         resp.cqe_comp_caps.max_num =
1047                                 MLX5_CAP_GEN(dev->mdev,
1048                                              cqe_compression_max_num);
1049
1050                         resp.cqe_comp_caps.supported_format =
1051                                 MLX5_IB_CQE_RES_FORMAT_HASH |
1052                                 MLX5_IB_CQE_RES_FORMAT_CSUM;
1053
1054                         if (MLX5_CAP_GEN(dev->mdev, mini_cqe_resp_stride_index))
1055                                 resp.cqe_comp_caps.supported_format |=
1056                                         MLX5_IB_CQE_RES_FORMAT_CSUM_STRIDX;
1057                 }
1058         }
1059
1060         if (offsetofend(typeof(resp), packet_pacing_caps) <= uhw_outlen &&
1061             raw_support) {
1062                 if (MLX5_CAP_QOS(mdev, packet_pacing) &&
1063                     MLX5_CAP_GEN(mdev, qos)) {
1064                         resp.packet_pacing_caps.qp_rate_limit_max =
1065                                 MLX5_CAP_QOS(mdev, packet_pacing_max_rate);
1066                         resp.packet_pacing_caps.qp_rate_limit_min =
1067                                 MLX5_CAP_QOS(mdev, packet_pacing_min_rate);
1068                         resp.packet_pacing_caps.supported_qpts |=
1069                                 1 << IB_QPT_RAW_PACKET;
1070                         if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) &&
1071                             MLX5_CAP_QOS(mdev, packet_pacing_typical_size))
1072                                 resp.packet_pacing_caps.cap_flags |=
1073                                         MLX5_IB_PP_SUPPORT_BURST;
1074                 }
1075                 resp.response_length += sizeof(resp.packet_pacing_caps);
1076         }
1077
1078         if (offsetofend(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes) <=
1079             uhw_outlen) {
1080                 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe))
1081                         resp.mlx5_ib_support_multi_pkt_send_wqes =
1082                                 MLX5_IB_ALLOW_MPW;
1083
1084                 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe))
1085                         resp.mlx5_ib_support_multi_pkt_send_wqes |=
1086                                 MLX5_IB_SUPPORT_EMPW;
1087
1088                 resp.response_length +=
1089                         sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes);
1090         }
1091
1092         if (offsetofend(typeof(resp), flags) <= uhw_outlen) {
1093                 resp.response_length += sizeof(resp.flags);
1094
1095                 if (MLX5_CAP_GEN(mdev, cqe_compression_128))
1096                         resp.flags |=
1097                                 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP;
1098
1099                 if (MLX5_CAP_GEN(mdev, cqe_128_always))
1100                         resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD;
1101                 if (MLX5_CAP_GEN(mdev, qp_packet_based))
1102                         resp.flags |=
1103                                 MLX5_IB_QUERY_DEV_RESP_PACKET_BASED_CREDIT_MODE;
1104
1105                 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_SCAT2CQE_DCT;
1106         }
1107
1108         if (offsetofend(typeof(resp), sw_parsing_caps) <= uhw_outlen) {
1109                 resp.response_length += sizeof(resp.sw_parsing_caps);
1110                 if (MLX5_CAP_ETH(mdev, swp)) {
1111                         resp.sw_parsing_caps.sw_parsing_offloads |=
1112                                 MLX5_IB_SW_PARSING;
1113
1114                         if (MLX5_CAP_ETH(mdev, swp_csum))
1115                                 resp.sw_parsing_caps.sw_parsing_offloads |=
1116                                         MLX5_IB_SW_PARSING_CSUM;
1117
1118                         if (MLX5_CAP_ETH(mdev, swp_lso))
1119                                 resp.sw_parsing_caps.sw_parsing_offloads |=
1120                                         MLX5_IB_SW_PARSING_LSO;
1121
1122                         if (resp.sw_parsing_caps.sw_parsing_offloads)
1123                                 resp.sw_parsing_caps.supported_qpts =
1124                                         BIT(IB_QPT_RAW_PACKET);
1125                 }
1126         }
1127
1128         if (offsetofend(typeof(resp), striding_rq_caps) <= uhw_outlen &&
1129             raw_support) {
1130                 resp.response_length += sizeof(resp.striding_rq_caps);
1131                 if (MLX5_CAP_GEN(mdev, striding_rq)) {
1132                         resp.striding_rq_caps.min_single_stride_log_num_of_bytes =
1133                                 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES;
1134                         resp.striding_rq_caps.max_single_stride_log_num_of_bytes =
1135                                 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES;
1136                         if (MLX5_CAP_GEN(dev->mdev, ext_stride_num_range))
1137                                 resp.striding_rq_caps
1138                                         .min_single_wqe_log_num_of_strides =
1139                                         MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
1140                         else
1141                                 resp.striding_rq_caps
1142                                         .min_single_wqe_log_num_of_strides =
1143                                         MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
1144                         resp.striding_rq_caps.max_single_wqe_log_num_of_strides =
1145                                 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES;
1146                         resp.striding_rq_caps.supported_qpts =
1147                                 BIT(IB_QPT_RAW_PACKET);
1148                 }
1149         }
1150
1151         if (offsetofend(typeof(resp), tunnel_offloads_caps) <= uhw_outlen) {
1152                 resp.response_length += sizeof(resp.tunnel_offloads_caps);
1153                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan))
1154                         resp.tunnel_offloads_caps |=
1155                                 MLX5_IB_TUNNELED_OFFLOADS_VXLAN;
1156                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx))
1157                         resp.tunnel_offloads_caps |=
1158                                 MLX5_IB_TUNNELED_OFFLOADS_GENEVE;
1159                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre))
1160                         resp.tunnel_offloads_caps |=
1161                                 MLX5_IB_TUNNELED_OFFLOADS_GRE;
1162                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_gre))
1163                         resp.tunnel_offloads_caps |=
1164                                 MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE;
1165                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_udp))
1166                         resp.tunnel_offloads_caps |=
1167                                 MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP;
1168         }
1169
1170         if (uhw_outlen) {
1171                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
1172
1173                 if (err)
1174                         return err;
1175         }
1176
1177         return 0;
1178 }
1179
1180 static void translate_active_width(struct ib_device *ibdev, u16 active_width,
1181                                    u8 *ib_width)
1182 {
1183         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1184
1185         if (active_width & MLX5_PTYS_WIDTH_1X)
1186                 *ib_width = IB_WIDTH_1X;
1187         else if (active_width & MLX5_PTYS_WIDTH_2X)
1188                 *ib_width = IB_WIDTH_2X;
1189         else if (active_width & MLX5_PTYS_WIDTH_4X)
1190                 *ib_width = IB_WIDTH_4X;
1191         else if (active_width & MLX5_PTYS_WIDTH_8X)
1192                 *ib_width = IB_WIDTH_8X;
1193         else if (active_width & MLX5_PTYS_WIDTH_12X)
1194                 *ib_width = IB_WIDTH_12X;
1195         else {
1196                 mlx5_ib_dbg(dev, "Invalid active_width %d, setting width to default value: 4x\n",
1197                             active_width);
1198                 *ib_width = IB_WIDTH_4X;
1199         }
1200
1201         return;
1202 }
1203
1204 static int mlx5_mtu_to_ib_mtu(int mtu)
1205 {
1206         switch (mtu) {
1207         case 256: return 1;
1208         case 512: return 2;
1209         case 1024: return 3;
1210         case 2048: return 4;
1211         case 4096: return 5;
1212         default:
1213                 pr_warn("invalid mtu\n");
1214                 return -1;
1215         }
1216 }
1217
1218 enum ib_max_vl_num {
1219         __IB_MAX_VL_0           = 1,
1220         __IB_MAX_VL_0_1         = 2,
1221         __IB_MAX_VL_0_3         = 3,
1222         __IB_MAX_VL_0_7         = 4,
1223         __IB_MAX_VL_0_14        = 5,
1224 };
1225
1226 enum mlx5_vl_hw_cap {
1227         MLX5_VL_HW_0    = 1,
1228         MLX5_VL_HW_0_1  = 2,
1229         MLX5_VL_HW_0_2  = 3,
1230         MLX5_VL_HW_0_3  = 4,
1231         MLX5_VL_HW_0_4  = 5,
1232         MLX5_VL_HW_0_5  = 6,
1233         MLX5_VL_HW_0_6  = 7,
1234         MLX5_VL_HW_0_7  = 8,
1235         MLX5_VL_HW_0_14 = 15
1236 };
1237
1238 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
1239                                 u8 *max_vl_num)
1240 {
1241         switch (vl_hw_cap) {
1242         case MLX5_VL_HW_0:
1243                 *max_vl_num = __IB_MAX_VL_0;
1244                 break;
1245         case MLX5_VL_HW_0_1:
1246                 *max_vl_num = __IB_MAX_VL_0_1;
1247                 break;
1248         case MLX5_VL_HW_0_3:
1249                 *max_vl_num = __IB_MAX_VL_0_3;
1250                 break;
1251         case MLX5_VL_HW_0_7:
1252                 *max_vl_num = __IB_MAX_VL_0_7;
1253                 break;
1254         case MLX5_VL_HW_0_14:
1255                 *max_vl_num = __IB_MAX_VL_0_14;
1256                 break;
1257
1258         default:
1259                 return -EINVAL;
1260         }
1261
1262         return 0;
1263 }
1264
1265 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
1266                                struct ib_port_attr *props)
1267 {
1268         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1269         struct mlx5_core_dev *mdev = dev->mdev;
1270         struct mlx5_hca_vport_context *rep;
1271         u16 max_mtu;
1272         u16 oper_mtu;
1273         int err;
1274         u16 ib_link_width_oper;
1275         u8 vl_hw_cap;
1276
1277         rep = kzalloc(sizeof(*rep), GFP_KERNEL);
1278         if (!rep) {
1279                 err = -ENOMEM;
1280                 goto out;
1281         }
1282
1283         /* props being zeroed by the caller, avoid zeroing it here */
1284
1285         err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
1286         if (err)
1287                 goto out;
1288
1289         props->lid              = rep->lid;
1290         props->lmc              = rep->lmc;
1291         props->sm_lid           = rep->sm_lid;
1292         props->sm_sl            = rep->sm_sl;
1293         props->state            = rep->vport_state;
1294         props->phys_state       = rep->port_physical_state;
1295         props->port_cap_flags   = rep->cap_mask1;
1296         props->gid_tbl_len      = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
1297         props->max_msg_sz       = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
1298         props->pkey_tbl_len     = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
1299         props->bad_pkey_cntr    = rep->pkey_violation_counter;
1300         props->qkey_viol_cntr   = rep->qkey_violation_counter;
1301         props->subnet_timeout   = rep->subnet_timeout;
1302         props->init_type_reply  = rep->init_type_reply;
1303
1304         if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP)
1305                 props->port_cap_flags2 = rep->cap_mask2;
1306
1307         err = mlx5_query_ib_port_oper(mdev, &ib_link_width_oper,
1308                                       &props->active_speed, port);
1309         if (err)
1310                 goto out;
1311
1312         translate_active_width(ibdev, ib_link_width_oper, &props->active_width);
1313
1314         mlx5_query_port_max_mtu(mdev, &max_mtu, port);
1315
1316         props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
1317
1318         mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
1319
1320         props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
1321
1322         err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
1323         if (err)
1324                 goto out;
1325
1326         err = translate_max_vl_num(ibdev, vl_hw_cap,
1327                                    &props->max_vl_num);
1328 out:
1329         kfree(rep);
1330         return err;
1331 }
1332
1333 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
1334                        struct ib_port_attr *props)
1335 {
1336         unsigned int count;
1337         int ret;
1338
1339         switch (mlx5_get_vport_access_method(ibdev)) {
1340         case MLX5_VPORT_ACCESS_METHOD_MAD:
1341                 ret = mlx5_query_mad_ifc_port(ibdev, port, props);
1342                 break;
1343
1344         case MLX5_VPORT_ACCESS_METHOD_HCA:
1345                 ret = mlx5_query_hca_port(ibdev, port, props);
1346                 break;
1347
1348         case MLX5_VPORT_ACCESS_METHOD_NIC:
1349                 ret = mlx5_query_port_roce(ibdev, port, props);
1350                 break;
1351
1352         default:
1353                 ret = -EINVAL;
1354         }
1355
1356         if (!ret && props) {
1357                 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1358                 struct mlx5_core_dev *mdev;
1359                 bool put_mdev = true;
1360
1361                 mdev = mlx5_ib_get_native_port_mdev(dev, port, NULL);
1362                 if (!mdev) {
1363                         /* If the port isn't affiliated yet query the master.
1364                          * The master and slave will have the same values.
1365                          */
1366                         mdev = dev->mdev;
1367                         port = 1;
1368                         put_mdev = false;
1369                 }
1370                 count = mlx5_core_reserved_gids_count(mdev);
1371                 if (put_mdev)
1372                         mlx5_ib_put_native_port_mdev(dev, port);
1373                 props->gid_tbl_len -= count;
1374         }
1375         return ret;
1376 }
1377
1378 static int mlx5_ib_rep_query_port(struct ib_device *ibdev, u8 port,
1379                                   struct ib_port_attr *props)
1380 {
1381         int ret;
1382
1383         /* Only link layer == ethernet is valid for representors
1384          * and we always use port 1
1385          */
1386         ret = mlx5_query_port_roce(ibdev, port, props);
1387         if (ret || !props)
1388                 return ret;
1389
1390         /* We don't support GIDS */
1391         props->gid_tbl_len = 0;
1392
1393         return ret;
1394 }
1395
1396 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
1397                              union ib_gid *gid)
1398 {
1399         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1400         struct mlx5_core_dev *mdev = dev->mdev;
1401
1402         switch (mlx5_get_vport_access_method(ibdev)) {
1403         case MLX5_VPORT_ACCESS_METHOD_MAD:
1404                 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
1405
1406         case MLX5_VPORT_ACCESS_METHOD_HCA:
1407                 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
1408
1409         default:
1410                 return -EINVAL;
1411         }
1412
1413 }
1414
1415 static int mlx5_query_hca_nic_pkey(struct ib_device *ibdev, u8 port,
1416                                    u16 index, u16 *pkey)
1417 {
1418         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1419         struct mlx5_core_dev *mdev;
1420         bool put_mdev = true;
1421         u8 mdev_port_num;
1422         int err;
1423
1424         mdev = mlx5_ib_get_native_port_mdev(dev, port, &mdev_port_num);
1425         if (!mdev) {
1426                 /* The port isn't affiliated yet, get the PKey from the master
1427                  * port. For RoCE the PKey tables will be the same.
1428                  */
1429                 put_mdev = false;
1430                 mdev = dev->mdev;
1431                 mdev_port_num = 1;
1432         }
1433
1434         err = mlx5_query_hca_vport_pkey(mdev, 0, mdev_port_num, 0,
1435                                         index, pkey);
1436         if (put_mdev)
1437                 mlx5_ib_put_native_port_mdev(dev, port);
1438
1439         return err;
1440 }
1441
1442 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
1443                               u16 *pkey)
1444 {
1445         switch (mlx5_get_vport_access_method(ibdev)) {
1446         case MLX5_VPORT_ACCESS_METHOD_MAD:
1447                 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
1448
1449         case MLX5_VPORT_ACCESS_METHOD_HCA:
1450         case MLX5_VPORT_ACCESS_METHOD_NIC:
1451                 return mlx5_query_hca_nic_pkey(ibdev, port, index, pkey);
1452         default:
1453                 return -EINVAL;
1454         }
1455 }
1456
1457 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
1458                                  struct ib_device_modify *props)
1459 {
1460         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1461         struct mlx5_reg_node_desc in;
1462         struct mlx5_reg_node_desc out;
1463         int err;
1464
1465         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1466                 return -EOPNOTSUPP;
1467
1468         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1469                 return 0;
1470
1471         /*
1472          * If possible, pass node desc to FW, so it can generate
1473          * a 144 trap.  If cmd fails, just ignore.
1474          */
1475         memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1476         err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
1477                                    sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
1478         if (err)
1479                 return err;
1480
1481         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1482
1483         return err;
1484 }
1485
1486 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask,
1487                                 u32 value)
1488 {
1489         struct mlx5_hca_vport_context ctx = {};
1490         struct mlx5_core_dev *mdev;
1491         u8 mdev_port_num;
1492         int err;
1493
1494         mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
1495         if (!mdev)
1496                 return -ENODEV;
1497
1498         err = mlx5_query_hca_vport_context(mdev, 0, mdev_port_num, 0, &ctx);
1499         if (err)
1500                 goto out;
1501
1502         if (~ctx.cap_mask1_perm & mask) {
1503                 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n",
1504                              mask, ctx.cap_mask1_perm);
1505                 err = -EINVAL;
1506                 goto out;
1507         }
1508
1509         ctx.cap_mask1 = value;
1510         ctx.cap_mask1_perm = mask;
1511         err = mlx5_core_modify_hca_vport_context(mdev, 0, mdev_port_num,
1512                                                  0, &ctx);
1513
1514 out:
1515         mlx5_ib_put_native_port_mdev(dev, port_num);
1516
1517         return err;
1518 }
1519
1520 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1521                                struct ib_port_modify *props)
1522 {
1523         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1524         struct ib_port_attr attr;
1525         u32 tmp;
1526         int err;
1527         u32 change_mask;
1528         u32 value;
1529         bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) ==
1530                       IB_LINK_LAYER_INFINIBAND);
1531
1532         /* CM layer calls ib_modify_port() regardless of the link layer. For
1533          * Ethernet ports, qkey violation and Port capabilities are meaningless.
1534          */
1535         if (!is_ib)
1536                 return 0;
1537
1538         if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) {
1539                 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask;
1540                 value = ~props->clr_port_cap_mask | props->set_port_cap_mask;
1541                 return set_port_caps_atomic(dev, port, change_mask, value);
1542         }
1543
1544         mutex_lock(&dev->cap_mask_mutex);
1545
1546         err = ib_query_port(ibdev, port, &attr);
1547         if (err)
1548                 goto out;
1549
1550         tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
1551                 ~props->clr_port_cap_mask;
1552
1553         err = mlx5_set_port_caps(dev->mdev, port, tmp);
1554
1555 out:
1556         mutex_unlock(&dev->cap_mask_mutex);
1557         return err;
1558 }
1559
1560 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps)
1561 {
1562         mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n",
1563                     caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n");
1564 }
1565
1566 static u16 calc_dynamic_bfregs(int uars_per_sys_page)
1567 {
1568         /* Large page with non 4k uar support might limit the dynamic size */
1569         if (uars_per_sys_page == 1  && PAGE_SIZE > 4096)
1570                 return MLX5_MIN_DYN_BFREGS;
1571
1572         return MLX5_MAX_DYN_BFREGS;
1573 }
1574
1575 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k,
1576                              struct mlx5_ib_alloc_ucontext_req_v2 *req,
1577                              struct mlx5_bfreg_info *bfregi)
1578 {
1579         int uars_per_sys_page;
1580         int bfregs_per_sys_page;
1581         int ref_bfregs = req->total_num_bfregs;
1582
1583         if (req->total_num_bfregs == 0)
1584                 return -EINVAL;
1585
1586         BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE);
1587         BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE);
1588
1589         if (req->total_num_bfregs > MLX5_MAX_BFREGS)
1590                 return -ENOMEM;
1591
1592         uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k);
1593         bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR;
1594         /* This holds the required static allocation asked by the user */
1595         req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page);
1596         if (req->num_low_latency_bfregs > req->total_num_bfregs - 1)
1597                 return -EINVAL;
1598
1599         bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page;
1600         bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page);
1601         bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs;
1602         bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page;
1603
1604         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",
1605                     MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no",
1606                     lib_uar_4k ? "yes" : "no", ref_bfregs,
1607                     req->total_num_bfregs, bfregi->total_num_bfregs,
1608                     bfregi->num_sys_pages);
1609
1610         return 0;
1611 }
1612
1613 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
1614 {
1615         struct mlx5_bfreg_info *bfregi;
1616         int err;
1617         int i;
1618
1619         bfregi = &context->bfregi;
1620         for (i = 0; i < bfregi->num_static_sys_pages; i++) {
1621                 err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]);
1622                 if (err)
1623                         goto error;
1624
1625                 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]);
1626         }
1627
1628         for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++)
1629                 bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX;
1630
1631         return 0;
1632
1633 error:
1634         for (--i; i >= 0; i--)
1635                 if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]))
1636                         mlx5_ib_warn(dev, "failed to free uar %d\n", i);
1637
1638         return err;
1639 }
1640
1641 static void deallocate_uars(struct mlx5_ib_dev *dev,
1642                             struct mlx5_ib_ucontext *context)
1643 {
1644         struct mlx5_bfreg_info *bfregi;
1645         int i;
1646
1647         bfregi = &context->bfregi;
1648         for (i = 0; i < bfregi->num_sys_pages; i++)
1649                 if (i < bfregi->num_static_sys_pages ||
1650                     bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX)
1651                         mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
1652 }
1653
1654 int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp)
1655 {
1656         int err = 0;
1657
1658         mutex_lock(&dev->lb.mutex);
1659         if (td)
1660                 dev->lb.user_td++;
1661         if (qp)
1662                 dev->lb.qps++;
1663
1664         if (dev->lb.user_td == 2 ||
1665             dev->lb.qps == 1) {
1666                 if (!dev->lb.enabled) {
1667                         err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
1668                         dev->lb.enabled = true;
1669                 }
1670         }
1671
1672         mutex_unlock(&dev->lb.mutex);
1673
1674         return err;
1675 }
1676
1677 void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp)
1678 {
1679         mutex_lock(&dev->lb.mutex);
1680         if (td)
1681                 dev->lb.user_td--;
1682         if (qp)
1683                 dev->lb.qps--;
1684
1685         if (dev->lb.user_td == 1 &&
1686             dev->lb.qps == 0) {
1687                 if (dev->lb.enabled) {
1688                         mlx5_nic_vport_update_local_lb(dev->mdev, false);
1689                         dev->lb.enabled = false;
1690                 }
1691         }
1692
1693         mutex_unlock(&dev->lb.mutex);
1694 }
1695
1696 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn,
1697                                           u16 uid)
1698 {
1699         int err;
1700
1701         if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1702                 return 0;
1703
1704         err = mlx5_cmd_alloc_transport_domain(dev->mdev, tdn, uid);
1705         if (err)
1706                 return err;
1707
1708         if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1709             (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1710              !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1711                 return err;
1712
1713         return mlx5_ib_enable_lb(dev, true, false);
1714 }
1715
1716 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn,
1717                                              u16 uid)
1718 {
1719         if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1720                 return;
1721
1722         mlx5_cmd_dealloc_transport_domain(dev->mdev, tdn, uid);
1723
1724         if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1725             (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1726              !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1727                 return;
1728
1729         mlx5_ib_disable_lb(dev, true, false);
1730 }
1731
1732 static int set_ucontext_resp(struct ib_ucontext *uctx,
1733                              struct mlx5_ib_alloc_ucontext_resp *resp)
1734 {
1735         struct ib_device *ibdev = uctx->device;
1736         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1737         struct mlx5_ib_ucontext *context = to_mucontext(uctx);
1738         struct mlx5_bfreg_info *bfregi = &context->bfregi;
1739         int err;
1740
1741         if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) {
1742                 err = mlx5_cmd_dump_fill_mkey(dev->mdev,
1743                                               &resp->dump_fill_mkey);
1744                 if (err)
1745                         return err;
1746                 resp->comp_mask |=
1747                         MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY;
1748         }
1749
1750         resp->qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
1751         if (dev->wc_support)
1752                 resp->bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev,
1753                                                       log_bf_reg_size);
1754         resp->cache_line_size = cache_line_size();
1755         resp->max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
1756         resp->max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
1757         resp->max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1758         resp->max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1759         resp->max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
1760         resp->cqe_version = context->cqe_version;
1761         resp->log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1762                                 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT;
1763         resp->num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1764                                         MLX5_CAP_GEN(dev->mdev,
1765                                                      num_of_uars_per_page) : 1;
1766
1767         if (mlx5_accel_ipsec_device_caps(dev->mdev) &
1768                                 MLX5_ACCEL_IPSEC_CAP_DEVICE) {
1769                 if (mlx5_get_flow_namespace(dev->mdev,
1770                                 MLX5_FLOW_NAMESPACE_EGRESS))
1771                         resp->flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM;
1772                 if (mlx5_accel_ipsec_device_caps(dev->mdev) &
1773                                 MLX5_ACCEL_IPSEC_CAP_REQUIRED_METADATA)
1774                         resp->flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_REQ_METADATA;
1775                 if (MLX5_CAP_FLOWTABLE(dev->mdev, flow_table_properties_nic_receive.ft_field_support.outer_esp_spi))
1776                         resp->flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_SPI_STEERING;
1777                 if (mlx5_accel_ipsec_device_caps(dev->mdev) &
1778                                 MLX5_ACCEL_IPSEC_CAP_TX_IV_IS_ESN)
1779                         resp->flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_TX_IV_IS_ESN;
1780                 /* MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_FULL_OFFLOAD is currently always 0 */
1781         }
1782
1783         resp->tot_bfregs = bfregi->lib_uar_dyn ? 0 :
1784                         bfregi->total_num_bfregs - bfregi->num_dyn_bfregs;
1785         resp->num_ports = dev->num_ports;
1786         resp->cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE |
1787                                       MLX5_USER_CMDS_SUPP_UHW_CREATE_AH;
1788
1789         if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) {
1790                 mlx5_query_min_inline(dev->mdev, &resp->eth_min_inline);
1791                 resp->eth_min_inline++;
1792         }
1793
1794         if (dev->mdev->clock_info)
1795                 resp->clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1);
1796
1797         /*
1798          * We don't want to expose information from the PCI bar that is located
1799          * after 4096 bytes, so if the arch only supports larger pages, let's
1800          * pretend we don't support reading the HCA's core clock. This is also
1801          * forced by mmap function.
1802          */
1803         if (PAGE_SIZE <= 4096) {
1804                 resp->comp_mask |=
1805                         MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
1806                 resp->hca_core_clock_offset =
1807                         offsetof(struct mlx5_init_seg,
1808                                  internal_timer_h) % PAGE_SIZE;
1809         }
1810
1811         if (MLX5_CAP_GEN(dev->mdev, ece_support))
1812                 resp->comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_ECE;
1813
1814         resp->num_dyn_bfregs = bfregi->num_dyn_bfregs;
1815         return 0;
1816 }
1817
1818 static int mlx5_ib_alloc_ucontext(struct ib_ucontext *uctx,
1819                                   struct ib_udata *udata)
1820 {
1821         struct ib_device *ibdev = uctx->device;
1822         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1823         struct mlx5_ib_alloc_ucontext_req_v2 req = {};
1824         struct mlx5_ib_alloc_ucontext_resp resp = {};
1825         struct mlx5_ib_ucontext *context = to_mucontext(uctx);
1826         struct mlx5_bfreg_info *bfregi;
1827         int ver;
1828         int err;
1829         size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2,
1830                                      max_cqe_version);
1831         bool lib_uar_4k;
1832         bool lib_uar_dyn;
1833
1834         if (!dev->ib_active)
1835                 return -EAGAIN;
1836
1837         if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
1838                 ver = 0;
1839         else if (udata->inlen >= min_req_v2)
1840                 ver = 2;
1841         else
1842                 return -EINVAL;
1843
1844         err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req)));
1845         if (err)
1846                 return err;
1847
1848         if (req.flags & ~MLX5_IB_ALLOC_UCTX_DEVX)
1849                 return -EOPNOTSUPP;
1850
1851         if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2)
1852                 return -EOPNOTSUPP;
1853
1854         req.total_num_bfregs = ALIGN(req.total_num_bfregs,
1855                                     MLX5_NON_FP_BFREGS_PER_UAR);
1856         if (req.num_low_latency_bfregs > req.total_num_bfregs - 1)
1857                 return -EINVAL;
1858
1859         lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR;
1860         lib_uar_dyn = req.lib_caps & MLX5_LIB_CAP_DYN_UAR;
1861         bfregi = &context->bfregi;
1862
1863         if (lib_uar_dyn) {
1864                 bfregi->lib_uar_dyn = lib_uar_dyn;
1865                 goto uar_done;
1866         }
1867
1868         /* updates req->total_num_bfregs */
1869         err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi);
1870         if (err)
1871                 goto out_ctx;
1872
1873         mutex_init(&bfregi->lock);
1874         bfregi->lib_uar_4k = lib_uar_4k;
1875         bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count),
1876                                 GFP_KERNEL);
1877         if (!bfregi->count) {
1878                 err = -ENOMEM;
1879                 goto out_ctx;
1880         }
1881
1882         bfregi->sys_pages = kcalloc(bfregi->num_sys_pages,
1883                                     sizeof(*bfregi->sys_pages),
1884                                     GFP_KERNEL);
1885         if (!bfregi->sys_pages) {
1886                 err = -ENOMEM;
1887                 goto out_count;
1888         }
1889
1890         err = allocate_uars(dev, context);
1891         if (err)
1892                 goto out_sys_pages;
1893
1894 uar_done:
1895         if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) {
1896                 err = mlx5_ib_devx_create(dev, true);
1897                 if (err < 0)
1898                         goto out_uars;
1899                 context->devx_uid = err;
1900         }
1901
1902         err = mlx5_ib_alloc_transport_domain(dev, &context->tdn,
1903                                              context->devx_uid);
1904         if (err)
1905                 goto out_devx;
1906
1907         INIT_LIST_HEAD(&context->db_page_list);
1908         mutex_init(&context->db_page_mutex);
1909
1910         context->cqe_version = min_t(__u8,
1911                                  (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version),
1912                                  req.max_cqe_version);
1913
1914         err = set_ucontext_resp(uctx, &resp);
1915         if (err)
1916                 goto out_mdev;
1917
1918         resp.response_length = min(udata->outlen, sizeof(resp));
1919         err = ib_copy_to_udata(udata, &resp, resp.response_length);
1920         if (err)
1921                 goto out_mdev;
1922
1923         bfregi->ver = ver;
1924         bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs;
1925         context->lib_caps = req.lib_caps;
1926         print_lib_caps(dev, context->lib_caps);
1927
1928         if (mlx5_ib_lag_should_assign_affinity(dev)) {
1929                 u8 port = mlx5_core_native_port_num(dev->mdev) - 1;
1930
1931                 atomic_set(&context->tx_port_affinity,
1932                            atomic_add_return(
1933                                    1, &dev->port[port].roce.tx_port_affinity));
1934         }
1935
1936         return 0;
1937
1938 out_mdev:
1939         mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid);
1940 out_devx:
1941         if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX)
1942                 mlx5_ib_devx_destroy(dev, context->devx_uid);
1943
1944 out_uars:
1945         deallocate_uars(dev, context);
1946
1947 out_sys_pages:
1948         kfree(bfregi->sys_pages);
1949
1950 out_count:
1951         kfree(bfregi->count);
1952
1953 out_ctx:
1954         return err;
1955 }
1956
1957 static int mlx5_ib_query_ucontext(struct ib_ucontext *ibcontext,
1958                                   struct uverbs_attr_bundle *attrs)
1959 {
1960         struct mlx5_ib_alloc_ucontext_resp uctx_resp = {};
1961         int ret;
1962
1963         ret = set_ucontext_resp(ibcontext, &uctx_resp);
1964         if (ret)
1965                 return ret;
1966
1967         uctx_resp.response_length =
1968                 min_t(size_t,
1969                       uverbs_attr_get_len(attrs,
1970                                 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX),
1971                       sizeof(uctx_resp));
1972
1973         ret = uverbs_copy_to_struct_or_zero(attrs,
1974                                         MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX,
1975                                         &uctx_resp,
1976                                         sizeof(uctx_resp));
1977         return ret;
1978 }
1979
1980 static void mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1981 {
1982         struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1983         struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1984         struct mlx5_bfreg_info *bfregi;
1985
1986         bfregi = &context->bfregi;
1987         mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid);
1988
1989         if (context->devx_uid)
1990                 mlx5_ib_devx_destroy(dev, context->devx_uid);
1991
1992         deallocate_uars(dev, context);
1993         kfree(bfregi->sys_pages);
1994         kfree(bfregi->count);
1995 }
1996
1997 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev,
1998                                  int uar_idx)
1999 {
2000         int fw_uars_per_page;
2001
2002         fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1;
2003
2004         return (dev->mdev->bar_addr >> PAGE_SHIFT) + uar_idx / fw_uars_per_page;
2005 }
2006
2007 static u64 uar_index2paddress(struct mlx5_ib_dev *dev,
2008                                  int uar_idx)
2009 {
2010         unsigned int fw_uars_per_page;
2011
2012         fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
2013                                 MLX5_UARS_IN_PAGE : 1;
2014
2015         return (dev->mdev->bar_addr + (uar_idx / fw_uars_per_page) * PAGE_SIZE);
2016 }
2017
2018 static int get_command(unsigned long offset)
2019 {
2020         return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
2021 }
2022
2023 static int get_arg(unsigned long offset)
2024 {
2025         return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
2026 }
2027
2028 static int get_index(unsigned long offset)
2029 {
2030         return get_arg(offset);
2031 }
2032
2033 /* Index resides in an extra byte to enable larger values than 255 */
2034 static int get_extended_index(unsigned long offset)
2035 {
2036         return get_arg(offset) | ((offset >> 16) & 0xff) << 8;
2037 }
2038
2039
2040 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
2041 {
2042 }
2043
2044 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
2045 {
2046         switch (cmd) {
2047         case MLX5_IB_MMAP_WC_PAGE:
2048                 return "WC";
2049         case MLX5_IB_MMAP_REGULAR_PAGE:
2050                 return "best effort WC";
2051         case MLX5_IB_MMAP_NC_PAGE:
2052                 return "NC";
2053         case MLX5_IB_MMAP_DEVICE_MEM:
2054                 return "Device Memory";
2055         default:
2056                 return NULL;
2057         }
2058 }
2059
2060 static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev,
2061                                         struct vm_area_struct *vma,
2062                                         struct mlx5_ib_ucontext *context)
2063 {
2064         if ((vma->vm_end - vma->vm_start != PAGE_SIZE) ||
2065             !(vma->vm_flags & VM_SHARED))
2066                 return -EINVAL;
2067
2068         if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1)
2069                 return -EOPNOTSUPP;
2070
2071         if (vma->vm_flags & (VM_WRITE | VM_EXEC))
2072                 return -EPERM;
2073         vma->vm_flags &= ~VM_MAYWRITE;
2074
2075         if (!dev->mdev->clock_info)
2076                 return -EOPNOTSUPP;
2077
2078         return vm_insert_page(vma, vma->vm_start,
2079                               virt_to_page(dev->mdev->clock_info));
2080 }
2081
2082 static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry)
2083 {
2084         struct mlx5_user_mmap_entry *mentry = to_mmmap(entry);
2085         struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device);
2086         struct mlx5_var_table *var_table = &dev->var_table;
2087         struct mlx5_ib_dm *mdm;
2088
2089         switch (mentry->mmap_flag) {
2090         case MLX5_IB_MMAP_TYPE_MEMIC:
2091                 mdm = container_of(mentry, struct mlx5_ib_dm, mentry);
2092                 mlx5_cmd_dealloc_memic(&dev->dm, mdm->dev_addr,
2093                                        mdm->size);
2094                 kfree(mdm);
2095                 break;
2096         case MLX5_IB_MMAP_TYPE_VAR:
2097                 mutex_lock(&var_table->bitmap_lock);
2098                 clear_bit(mentry->page_idx, var_table->bitmap);
2099                 mutex_unlock(&var_table->bitmap_lock);
2100                 kfree(mentry);
2101                 break;
2102         case MLX5_IB_MMAP_TYPE_UAR_WC:
2103         case MLX5_IB_MMAP_TYPE_UAR_NC:
2104                 mlx5_cmd_free_uar(dev->mdev, mentry->page_idx);
2105                 kfree(mentry);
2106                 break;
2107         default:
2108                 WARN_ON(true);
2109         }
2110 }
2111
2112 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
2113                     struct vm_area_struct *vma,
2114                     struct mlx5_ib_ucontext *context)
2115 {
2116         struct mlx5_bfreg_info *bfregi = &context->bfregi;
2117         int err;
2118         unsigned long idx;
2119         phys_addr_t pfn;
2120         pgprot_t prot;
2121         u32 bfreg_dyn_idx = 0;
2122         u32 uar_index;
2123         int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC);
2124         int max_valid_idx = dyn_uar ? bfregi->num_sys_pages :
2125                                 bfregi->num_static_sys_pages;
2126
2127         if (bfregi->lib_uar_dyn)
2128                 return -EINVAL;
2129
2130         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
2131                 return -EINVAL;
2132
2133         if (dyn_uar)
2134                 idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages;
2135         else
2136                 idx = get_index(vma->vm_pgoff);
2137
2138         if (idx >= max_valid_idx) {
2139                 mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n",
2140                              idx, max_valid_idx);
2141                 return -EINVAL;
2142         }
2143
2144         switch (cmd) {
2145         case MLX5_IB_MMAP_WC_PAGE:
2146         case MLX5_IB_MMAP_ALLOC_WC:
2147         case MLX5_IB_MMAP_REGULAR_PAGE:
2148                 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */
2149                 prot = pgprot_writecombine(vma->vm_page_prot);
2150                 break;
2151         case MLX5_IB_MMAP_NC_PAGE:
2152                 prot = pgprot_noncached(vma->vm_page_prot);
2153                 break;
2154         default:
2155                 return -EINVAL;
2156         }
2157
2158         if (dyn_uar) {
2159                 int uars_per_page;
2160
2161                 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k);
2162                 bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR);
2163                 if (bfreg_dyn_idx >= bfregi->total_num_bfregs) {
2164                         mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n",
2165                                      bfreg_dyn_idx, bfregi->total_num_bfregs);
2166                         return -EINVAL;
2167                 }
2168
2169                 mutex_lock(&bfregi->lock);
2170                 /* Fail if uar already allocated, first bfreg index of each
2171                  * page holds its count.
2172                  */
2173                 if (bfregi->count[bfreg_dyn_idx]) {
2174                         mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx);
2175                         mutex_unlock(&bfregi->lock);
2176                         return -EINVAL;
2177                 }
2178
2179                 bfregi->count[bfreg_dyn_idx]++;
2180                 mutex_unlock(&bfregi->lock);
2181
2182                 err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index);
2183                 if (err) {
2184                         mlx5_ib_warn(dev, "UAR alloc failed\n");
2185                         goto free_bfreg;
2186                 }
2187         } else {
2188                 uar_index = bfregi->sys_pages[idx];
2189         }
2190
2191         pfn = uar_index2pfn(dev, uar_index);
2192         mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn);
2193
2194         err = rdma_user_mmap_io(&context->ibucontext, vma, pfn, PAGE_SIZE,
2195                                 prot, NULL);
2196         if (err) {
2197                 mlx5_ib_err(dev,
2198                             "rdma_user_mmap_io failed with error=%d, mmap_cmd=%s\n",
2199                             err, mmap_cmd2str(cmd));
2200                 goto err;
2201         }
2202
2203         if (dyn_uar)
2204                 bfregi->sys_pages[idx] = uar_index;
2205         return 0;
2206
2207 err:
2208         if (!dyn_uar)
2209                 return err;
2210
2211         mlx5_cmd_free_uar(dev->mdev, idx);
2212
2213 free_bfreg:
2214         mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx);
2215
2216         return err;
2217 }
2218
2219 static int add_dm_mmap_entry(struct ib_ucontext *context,
2220                              struct mlx5_ib_dm *mdm,
2221                              u64 address)
2222 {
2223         mdm->mentry.mmap_flag = MLX5_IB_MMAP_TYPE_MEMIC;
2224         mdm->mentry.address = address;
2225         return rdma_user_mmap_entry_insert_range(
2226                         context, &mdm->mentry.rdma_entry,
2227                         mdm->size,
2228                         MLX5_IB_MMAP_DEVICE_MEM << 16,
2229                         (MLX5_IB_MMAP_DEVICE_MEM << 16) + (1UL << 16) - 1);
2230 }
2231
2232 static unsigned long mlx5_vma_to_pgoff(struct vm_area_struct *vma)
2233 {
2234         unsigned long idx;
2235         u8 command;
2236
2237         command = get_command(vma->vm_pgoff);
2238         idx = get_extended_index(vma->vm_pgoff);
2239
2240         return (command << 16 | idx);
2241 }
2242
2243 static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev,
2244                                struct vm_area_struct *vma,
2245                                struct ib_ucontext *ucontext)
2246 {
2247         struct mlx5_user_mmap_entry *mentry;
2248         struct rdma_user_mmap_entry *entry;
2249         unsigned long pgoff;
2250         pgprot_t prot;
2251         phys_addr_t pfn;
2252         int ret;
2253
2254         pgoff = mlx5_vma_to_pgoff(vma);
2255         entry = rdma_user_mmap_entry_get_pgoff(ucontext, pgoff);
2256         if (!entry)
2257                 return -EINVAL;
2258
2259         mentry = to_mmmap(entry);
2260         pfn = (mentry->address >> PAGE_SHIFT);
2261         if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR ||
2262             mentry->mmap_flag == MLX5_IB_MMAP_TYPE_UAR_NC)
2263                 prot = pgprot_noncached(vma->vm_page_prot);
2264         else
2265                 prot = pgprot_writecombine(vma->vm_page_prot);
2266         ret = rdma_user_mmap_io(ucontext, vma, pfn,
2267                                 entry->npages * PAGE_SIZE,
2268                                 prot,
2269                                 entry);
2270         rdma_user_mmap_entry_put(&mentry->rdma_entry);
2271         return ret;
2272 }
2273
2274 static u64 mlx5_entry_to_mmap_offset(struct mlx5_user_mmap_entry *entry)
2275 {
2276         u64 cmd = (entry->rdma_entry.start_pgoff >> 16) & 0xFFFF;
2277         u64 index = entry->rdma_entry.start_pgoff & 0xFFFF;
2278
2279         return (((index >> 8) << 16) | (cmd << MLX5_IB_MMAP_CMD_SHIFT) |
2280                 (index & 0xFF)) << PAGE_SHIFT;
2281 }
2282
2283 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
2284 {
2285         struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
2286         struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
2287         unsigned long command;
2288         phys_addr_t pfn;
2289
2290         command = get_command(vma->vm_pgoff);
2291         switch (command) {
2292         case MLX5_IB_MMAP_WC_PAGE:
2293         case MLX5_IB_MMAP_ALLOC_WC:
2294                 if (!dev->wc_support)
2295                         return -EPERM;
2296                 fallthrough;
2297         case MLX5_IB_MMAP_NC_PAGE:
2298         case MLX5_IB_MMAP_REGULAR_PAGE:
2299                 return uar_mmap(dev, command, vma, context);
2300
2301         case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
2302                 return -ENOSYS;
2303
2304         case MLX5_IB_MMAP_CORE_CLOCK:
2305                 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
2306                         return -EINVAL;
2307
2308                 if (vma->vm_flags & VM_WRITE)
2309                         return -EPERM;
2310                 vma->vm_flags &= ~VM_MAYWRITE;
2311
2312                 /* Don't expose to user-space information it shouldn't have */
2313                 if (PAGE_SIZE > 4096)
2314                         return -EOPNOTSUPP;
2315
2316                 pfn = (dev->mdev->iseg_base +
2317                        offsetof(struct mlx5_init_seg, internal_timer_h)) >>
2318                         PAGE_SHIFT;
2319                 return rdma_user_mmap_io(&context->ibucontext, vma, pfn,
2320                                          PAGE_SIZE,
2321                                          pgprot_noncached(vma->vm_page_prot),
2322                                          NULL);
2323         case MLX5_IB_MMAP_CLOCK_INFO:
2324                 return mlx5_ib_mmap_clock_info_page(dev, vma, context);
2325
2326         default:
2327                 return mlx5_ib_mmap_offset(dev, vma, ibcontext);
2328         }
2329
2330         return 0;
2331 }
2332
2333 static inline int check_dm_type_support(struct mlx5_ib_dev *dev,
2334                                         u32 type)
2335 {
2336         switch (type) {
2337         case MLX5_IB_UAPI_DM_TYPE_MEMIC:
2338                 if (!MLX5_CAP_DEV_MEM(dev->mdev, memic))
2339                         return -EOPNOTSUPP;
2340                 break;
2341         case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM:
2342         case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM:
2343                 if (!capable(CAP_SYS_RAWIO) ||
2344                     !capable(CAP_NET_RAW))
2345                         return -EPERM;
2346
2347                 if (!(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) ||
2348                       MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner) ||
2349                       MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2) ||
2350                       MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner_v2)))
2351                         return -EOPNOTSUPP;
2352                 break;
2353         }
2354
2355         return 0;
2356 }
2357
2358 static int handle_alloc_dm_memic(struct ib_ucontext *ctx,
2359                                  struct mlx5_ib_dm *dm,
2360                                  struct ib_dm_alloc_attr *attr,
2361                                  struct uverbs_attr_bundle *attrs)
2362 {
2363         struct mlx5_dm *dm_db = &to_mdev(ctx->device)->dm;
2364         u64 start_offset;
2365         u16 page_idx;
2366         int err;
2367         u64 address;
2368
2369         dm->size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE);
2370
2371         err = mlx5_cmd_alloc_memic(dm_db, &dm->dev_addr,
2372                                    dm->size, attr->alignment);
2373         if (err)
2374                 return err;
2375
2376         address = dm->dev_addr & PAGE_MASK;
2377         err = add_dm_mmap_entry(ctx, dm, address);
2378         if (err)
2379                 goto err_dealloc;
2380
2381         page_idx = dm->mentry.rdma_entry.start_pgoff & 0xFFFF;
2382         err = uverbs_copy_to(attrs,
2383                              MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
2384                              &page_idx,
2385                              sizeof(page_idx));
2386         if (err)
2387                 goto err_copy;
2388
2389         start_offset = dm->dev_addr & ~PAGE_MASK;
2390         err = uverbs_copy_to(attrs,
2391                              MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
2392                              &start_offset, sizeof(start_offset));
2393         if (err)
2394                 goto err_copy;
2395
2396         return 0;
2397
2398 err_copy:
2399         rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry);
2400 err_dealloc:
2401         mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size);
2402
2403         return err;
2404 }
2405
2406 static int handle_alloc_dm_sw_icm(struct ib_ucontext *ctx,
2407                                   struct mlx5_ib_dm *dm,
2408                                   struct ib_dm_alloc_attr *attr,
2409                                   struct uverbs_attr_bundle *attrs,
2410                                   int type)
2411 {
2412         struct mlx5_core_dev *dev = to_mdev(ctx->device)->mdev;
2413         u64 act_size;
2414         int err;
2415
2416         /* Allocation size must a multiple of the basic block size
2417          * and a power of 2.
2418          */
2419         act_size = round_up(attr->length, MLX5_SW_ICM_BLOCK_SIZE(dev));
2420         act_size = roundup_pow_of_two(act_size);
2421
2422         dm->size = act_size;
2423         err = mlx5_dm_sw_icm_alloc(dev, type, act_size, attr->alignment,
2424                                    to_mucontext(ctx)->devx_uid, &dm->dev_addr,
2425                                    &dm->icm_dm.obj_id);
2426         if (err)
2427                 return err;
2428
2429         err = uverbs_copy_to(attrs,
2430                              MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
2431                              &dm->dev_addr, sizeof(dm->dev_addr));
2432         if (err)
2433                 mlx5_dm_sw_icm_dealloc(dev, type, dm->size,
2434                                        to_mucontext(ctx)->devx_uid, dm->dev_addr,
2435                                        dm->icm_dm.obj_id);
2436
2437         return err;
2438 }
2439
2440 struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
2441                                struct ib_ucontext *context,
2442                                struct ib_dm_alloc_attr *attr,
2443                                struct uverbs_attr_bundle *attrs)
2444 {
2445         struct mlx5_ib_dm *dm;
2446         enum mlx5_ib_uapi_dm_type type;
2447         int err;
2448
2449         err = uverbs_get_const_default(&type, attrs,
2450                                        MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE,
2451                                        MLX5_IB_UAPI_DM_TYPE_MEMIC);
2452         if (err)
2453                 return ERR_PTR(err);
2454
2455         mlx5_ib_dbg(to_mdev(ibdev), "alloc_dm req: dm_type=%d user_length=0x%llx log_alignment=%d\n",
2456                     type, attr->length, attr->alignment);
2457
2458         err = check_dm_type_support(to_mdev(ibdev), type);
2459         if (err)
2460                 return ERR_PTR(err);
2461
2462         dm = kzalloc(sizeof(*dm), GFP_KERNEL);
2463         if (!dm)
2464                 return ERR_PTR(-ENOMEM);
2465
2466         dm->type = type;
2467
2468         switch (type) {
2469         case MLX5_IB_UAPI_DM_TYPE_MEMIC:
2470                 err = handle_alloc_dm_memic(context, dm,
2471                                             attr,
2472                                             attrs);
2473                 break;
2474         case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM:
2475                 err = handle_alloc_dm_sw_icm(context, dm,
2476                                              attr, attrs,
2477                                              MLX5_SW_ICM_TYPE_STEERING);
2478                 break;
2479         case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM:
2480                 err = handle_alloc_dm_sw_icm(context, dm,
2481                                              attr, attrs,
2482                                              MLX5_SW_ICM_TYPE_HEADER_MODIFY);
2483                 break;
2484         default:
2485                 err = -EOPNOTSUPP;
2486         }
2487
2488         if (err)
2489                 goto err_free;
2490
2491         return &dm->ibdm;
2492
2493 err_free:
2494         kfree(dm);
2495         return ERR_PTR(err);
2496 }
2497
2498 int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs)
2499 {
2500         struct mlx5_ib_ucontext *ctx = rdma_udata_to_drv_context(
2501                 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
2502         struct mlx5_core_dev *dev = to_mdev(ibdm->device)->mdev;
2503         struct mlx5_ib_dm *dm = to_mdm(ibdm);
2504         int ret;
2505
2506         switch (dm->type) {
2507         case MLX5_IB_UAPI_DM_TYPE_MEMIC:
2508                 rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry);
2509                 return 0;
2510         case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM:
2511                 ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_STEERING,
2512                                              dm->size, ctx->devx_uid, dm->dev_addr,
2513                                              dm->icm_dm.obj_id);
2514                 if (ret)
2515                         return ret;
2516                 break;
2517         case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM:
2518                 ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_HEADER_MODIFY,
2519                                              dm->size, ctx->devx_uid, dm->dev_addr,
2520                                              dm->icm_dm.obj_id);
2521                 if (ret)
2522                         return ret;
2523                 break;
2524         default:
2525                 return -EOPNOTSUPP;
2526         }
2527
2528         kfree(dm);
2529
2530         return 0;
2531 }
2532
2533 static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
2534 {
2535         struct mlx5_ib_pd *pd = to_mpd(ibpd);
2536         struct ib_device *ibdev = ibpd->device;
2537         struct mlx5_ib_alloc_pd_resp resp;
2538         int err;
2539         u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {};
2540         u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {};
2541         u16 uid = 0;
2542         struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
2543                 udata, struct mlx5_ib_ucontext, ibucontext);
2544
2545         uid = context ? context->devx_uid : 0;
2546         MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD);
2547         MLX5_SET(alloc_pd_in, in, uid, uid);
2548         err = mlx5_cmd_exec_inout(to_mdev(ibdev)->mdev, alloc_pd, in, out);
2549         if (err)
2550                 return err;
2551
2552         pd->pdn = MLX5_GET(alloc_pd_out, out, pd);
2553         pd->uid = uid;
2554         if (udata) {
2555                 resp.pdn = pd->pdn;
2556                 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
2557                         mlx5_cmd_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn, uid);
2558                         return -EFAULT;
2559                 }
2560         }
2561
2562         return 0;
2563 }
2564
2565 static int mlx5_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
2566 {
2567         struct mlx5_ib_dev *mdev = to_mdev(pd->device);
2568         struct mlx5_ib_pd *mpd = to_mpd(pd);
2569
2570         return mlx5_cmd_dealloc_pd(mdev->mdev, mpd->pdn, mpd->uid);
2571 }
2572
2573 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2574 {
2575         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2576         struct mlx5_ib_qp *mqp = to_mqp(ibqp);
2577         int err;
2578         u16 uid;
2579
2580         uid = ibqp->pd ?
2581                 to_mpd(ibqp->pd)->uid : 0;
2582
2583         if (mqp->flags & IB_QP_CREATE_SOURCE_QPN) {
2584                 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n");
2585                 return -EOPNOTSUPP;
2586         }
2587
2588         err = mlx5_cmd_attach_mcg(dev->mdev, gid, ibqp->qp_num, uid);
2589         if (err)
2590                 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
2591                              ibqp->qp_num, gid->raw);
2592
2593         return err;
2594 }
2595
2596 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2597 {
2598         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2599         int err;
2600         u16 uid;
2601
2602         uid = ibqp->pd ?
2603                 to_mpd(ibqp->pd)->uid : 0;
2604         err = mlx5_cmd_detach_mcg(dev->mdev, gid, ibqp->qp_num, uid);
2605         if (err)
2606                 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
2607                              ibqp->qp_num, gid->raw);
2608
2609         return err;
2610 }
2611
2612 static int init_node_data(struct mlx5_ib_dev *dev)
2613 {
2614         int err;
2615
2616         err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
2617         if (err)
2618                 return err;
2619
2620         dev->mdev->rev_id = dev->mdev->pdev->revision;
2621
2622         return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
2623 }
2624
2625 static ssize_t fw_pages_show(struct device *device,
2626                              struct device_attribute *attr, char *buf)
2627 {
2628         struct mlx5_ib_dev *dev =
2629                 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev);
2630
2631         return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
2632 }
2633 static DEVICE_ATTR_RO(fw_pages);
2634
2635 static ssize_t reg_pages_show(struct device *device,
2636                               struct device_attribute *attr, char *buf)
2637 {
2638         struct mlx5_ib_dev *dev =
2639                 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev);
2640
2641         return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
2642 }
2643 static DEVICE_ATTR_RO(reg_pages);
2644
2645 static ssize_t hca_type_show(struct device *device,
2646                              struct device_attribute *attr, char *buf)
2647 {
2648         struct mlx5_ib_dev *dev =
2649                 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev);
2650
2651         return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
2652 }
2653 static DEVICE_ATTR_RO(hca_type);
2654
2655 static ssize_t hw_rev_show(struct device *device,
2656                            struct device_attribute *attr, char *buf)
2657 {
2658         struct mlx5_ib_dev *dev =
2659                 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev);
2660
2661         return sprintf(buf, "%x\n", dev->mdev->rev_id);
2662 }
2663 static DEVICE_ATTR_RO(hw_rev);
2664
2665 static ssize_t board_id_show(struct device *device,
2666                              struct device_attribute *attr, char *buf)
2667 {
2668         struct mlx5_ib_dev *dev =
2669                 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev);
2670
2671         return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
2672                        dev->mdev->board_id);
2673 }
2674 static DEVICE_ATTR_RO(board_id);
2675
2676 static struct attribute *mlx5_class_attributes[] = {
2677         &dev_attr_hw_rev.attr,
2678         &dev_attr_hca_type.attr,
2679         &dev_attr_board_id.attr,
2680         &dev_attr_fw_pages.attr,
2681         &dev_attr_reg_pages.attr,
2682         NULL,
2683 };
2684
2685 static const struct attribute_group mlx5_attr_group = {
2686         .attrs = mlx5_class_attributes,
2687 };
2688
2689 static void pkey_change_handler(struct work_struct *work)
2690 {
2691         struct mlx5_ib_port_resources *ports =
2692                 container_of(work, struct mlx5_ib_port_resources,
2693                              pkey_change_work);
2694
2695         mlx5_ib_gsi_pkey_change(ports->gsi);
2696 }
2697
2698 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev)
2699 {
2700         struct mlx5_ib_qp *mqp;
2701         struct mlx5_ib_cq *send_mcq, *recv_mcq;
2702         struct mlx5_core_cq *mcq;
2703         struct list_head cq_armed_list;
2704         unsigned long flags_qp;
2705         unsigned long flags_cq;
2706         unsigned long flags;
2707
2708         INIT_LIST_HEAD(&cq_armed_list);
2709
2710         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2711         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2712         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2713                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2714                 if (mqp->sq.tail != mqp->sq.head) {
2715                         send_mcq = to_mcq(mqp->ibqp.send_cq);
2716                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
2717                         if (send_mcq->mcq.comp &&
2718                             mqp->ibqp.send_cq->comp_handler) {
2719                                 if (!send_mcq->mcq.reset_notify_added) {
2720                                         send_mcq->mcq.reset_notify_added = 1;
2721                                         list_add_tail(&send_mcq->mcq.reset_notify,
2722                                                       &cq_armed_list);
2723                                 }
2724                         }
2725                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2726                 }
2727                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2728                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2729                 /* no handling is needed for SRQ */
2730                 if (!mqp->ibqp.srq) {
2731                         if (mqp->rq.tail != mqp->rq.head) {
2732                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2733                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2734                                 if (recv_mcq->mcq.comp &&
2735                                     mqp->ibqp.recv_cq->comp_handler) {
2736                                         if (!recv_mcq->mcq.reset_notify_added) {
2737                                                 recv_mcq->mcq.reset_notify_added = 1;
2738                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
2739                                                               &cq_armed_list);
2740                                         }
2741                                 }
2742                                 spin_unlock_irqrestore(&recv_mcq->lock,
2743                                                        flags_cq);
2744                         }
2745                 }
2746                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2747         }
2748         /*At that point all inflight post send were put to be executed as of we
2749          * lock/unlock above locks Now need to arm all involved CQs.
2750          */
2751         list_for_each_entry(mcq, &cq_armed_list, reset_notify) {
2752                 mcq->comp(mcq, NULL);
2753         }
2754         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2755 }
2756
2757 static void delay_drop_handler(struct work_struct *work)
2758 {
2759         int err;
2760         struct mlx5_ib_delay_drop *delay_drop =
2761                 container_of(work, struct mlx5_ib_delay_drop,
2762                              delay_drop_work);
2763
2764         atomic_inc(&delay_drop->events_cnt);
2765
2766         mutex_lock(&delay_drop->lock);
2767         err = mlx5_core_set_delay_drop(delay_drop->dev, delay_drop->timeout);
2768         if (err) {
2769                 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n",
2770                              delay_drop->timeout);
2771                 delay_drop->activate = false;
2772         }
2773         mutex_unlock(&delay_drop->lock);
2774 }
2775
2776 static void handle_general_event(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe,
2777                                  struct ib_event *ibev)
2778 {
2779         u8 port = (eqe->data.port.port >> 4) & 0xf;
2780
2781         switch (eqe->sub_type) {
2782         case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT:
2783                 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) ==
2784                                             IB_LINK_LAYER_ETHERNET)
2785                         schedule_work(&ibdev->delay_drop.delay_drop_work);
2786                 break;
2787         default: /* do nothing */
2788                 return;
2789         }
2790 }
2791
2792 static int handle_port_change(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe,
2793                               struct ib_event *ibev)
2794 {
2795         u8 port = (eqe->data.port.port >> 4) & 0xf;
2796
2797         ibev->element.port_num = port;
2798
2799         switch (eqe->sub_type) {
2800         case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
2801         case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
2802         case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
2803                 /* In RoCE, port up/down events are handled in
2804                  * mlx5_netdev_event().
2805                  */
2806                 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) ==
2807                                             IB_LINK_LAYER_ETHERNET)
2808                         return -EINVAL;
2809
2810                 ibev->event = (eqe->sub_type == MLX5_PORT_CHANGE_SUBTYPE_ACTIVE) ?
2811                                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2812                 break;
2813
2814         case MLX5_PORT_CHANGE_SUBTYPE_LID:
2815                 ibev->event = IB_EVENT_LID_CHANGE;
2816                 break;
2817
2818         case MLX5_PORT_CHANGE_SUBTYPE_PKEY:
2819                 ibev->event = IB_EVENT_PKEY_CHANGE;
2820                 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
2821                 break;
2822
2823         case MLX5_PORT_CHANGE_SUBTYPE_GUID:
2824                 ibev->event = IB_EVENT_GID_CHANGE;
2825                 break;
2826
2827         case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG:
2828                 ibev->event = IB_EVENT_CLIENT_REREGISTER;
2829                 break;
2830         default:
2831                 return -EINVAL;
2832         }
2833
2834         return 0;
2835 }
2836
2837 static void mlx5_ib_handle_event(struct work_struct *_work)
2838 {
2839         struct mlx5_ib_event_work *work =
2840                 container_of(_work, struct mlx5_ib_event_work, work);
2841         struct mlx5_ib_dev *ibdev;
2842         struct ib_event ibev;
2843         bool fatal = false;
2844
2845         if (work->is_slave) {
2846                 ibdev = mlx5_ib_get_ibdev_from_mpi(work->mpi);
2847                 if (!ibdev)
2848                         goto out;
2849         } else {
2850                 ibdev = work->dev;
2851         }
2852
2853         switch (work->event) {
2854         case MLX5_DEV_EVENT_SYS_ERROR:
2855                 ibev.event = IB_EVENT_DEVICE_FATAL;
2856                 mlx5_ib_handle_internal_error(ibdev);
2857                 ibev.element.port_num  = (u8)(unsigned long)work->param;
2858                 fatal = true;
2859                 break;
2860         case MLX5_EVENT_TYPE_PORT_CHANGE:
2861                 if (handle_port_change(ibdev, work->param, &ibev))
2862                         goto out;
2863                 break;
2864         case MLX5_EVENT_TYPE_GENERAL_EVENT:
2865                 handle_general_event(ibdev, work->param, &ibev);
2866                 fallthrough;
2867         default:
2868                 goto out;
2869         }
2870
2871         ibev.device = &ibdev->ib_dev;
2872
2873         if (!rdma_is_port_valid(&ibdev->ib_dev, ibev.element.port_num)) {
2874                 mlx5_ib_warn(ibdev, "warning: event on port %d\n",  ibev.element.port_num);
2875                 goto out;
2876         }
2877
2878         if (ibdev->ib_active)
2879                 ib_dispatch_event(&ibev);
2880
2881         if (fatal)
2882                 ibdev->ib_active = false;
2883 out:
2884         kfree(work);
2885 }
2886
2887 static int mlx5_ib_event(struct notifier_block *nb,
2888                          unsigned long event, void *param)
2889 {
2890         struct mlx5_ib_event_work *work;
2891
2892         work = kmalloc(sizeof(*work), GFP_ATOMIC);
2893         if (!work)
2894                 return NOTIFY_DONE;
2895
2896         INIT_WORK(&work->work, mlx5_ib_handle_event);
2897         work->dev = container_of(nb, struct mlx5_ib_dev, mdev_events);
2898         work->is_slave = false;
2899         work->param = param;
2900         work->event = event;
2901
2902         queue_work(mlx5_ib_event_wq, &work->work);
2903
2904         return NOTIFY_OK;
2905 }
2906
2907 static int mlx5_ib_event_slave_port(struct notifier_block *nb,
2908                                     unsigned long event, void *param)
2909 {
2910         struct mlx5_ib_event_work *work;
2911
2912         work = kmalloc(sizeof(*work), GFP_ATOMIC);
2913         if (!work)
2914                 return NOTIFY_DONE;
2915
2916         INIT_WORK(&work->work, mlx5_ib_handle_event);
2917         work->mpi = container_of(nb, struct mlx5_ib_multiport_info, mdev_events);
2918         work->is_slave = true;
2919         work->param = param;
2920         work->event = event;
2921         queue_work(mlx5_ib_event_wq, &work->work);
2922
2923         return NOTIFY_OK;
2924 }
2925
2926 static int set_has_smi_cap(struct mlx5_ib_dev *dev)
2927 {
2928         struct mlx5_hca_vport_context vport_ctx;
2929         int err;
2930         int port;
2931
2932         for (port = 1; port <= ARRAY_SIZE(dev->mdev->port_caps); port++) {
2933                 dev->mdev->port_caps[port - 1].has_smi = false;
2934                 if (MLX5_CAP_GEN(dev->mdev, port_type) ==
2935                     MLX5_CAP_PORT_TYPE_IB) {
2936                         if (MLX5_CAP_GEN(dev->mdev, ib_virt)) {
2937                                 err = mlx5_query_hca_vport_context(dev->mdev, 0,
2938                                                                    port, 0,
2939                                                                    &vport_ctx);
2940                                 if (err) {
2941                                         mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
2942                                                     port, err);
2943                                         return err;
2944                                 }
2945                                 dev->mdev->port_caps[port - 1].has_smi =
2946                                         vport_ctx.has_smi;
2947                         } else {
2948                                 dev->mdev->port_caps[port - 1].has_smi = true;
2949                         }
2950                 }
2951         }
2952         return 0;
2953 }
2954
2955 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
2956 {
2957         int port;
2958
2959         for (port = 1; port <= dev->num_ports; port++)
2960                 mlx5_query_ext_port_caps(dev, port);
2961 }
2962
2963 static int __get_port_caps(struct mlx5_ib_dev *dev, u8 port)
2964 {
2965         struct ib_device_attr *dprops = NULL;
2966         struct ib_port_attr *pprops = NULL;
2967         int err = -ENOMEM;
2968
2969         pprops = kzalloc(sizeof(*pprops), GFP_KERNEL);
2970         if (!pprops)
2971                 goto out;
2972
2973         dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
2974         if (!dprops)
2975                 goto out;
2976
2977         err = mlx5_ib_query_device(&dev->ib_dev, dprops, NULL);
2978         if (err) {
2979                 mlx5_ib_warn(dev, "query_device failed %d\n", err);
2980                 goto out;
2981         }
2982
2983         err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
2984         if (err) {
2985                 mlx5_ib_warn(dev, "query_port %d failed %d\n",
2986                              port, err);
2987                 goto out;
2988         }
2989
2990         dev->mdev->port_caps[port - 1].pkey_table_len =
2991                                         dprops->max_pkeys;
2992         dev->mdev->port_caps[port - 1].gid_table_len =
2993                                         pprops->gid_tbl_len;
2994         mlx5_ib_dbg(dev, "port %d: pkey_table_len %d, gid_table_len %d\n",
2995                     port, dprops->max_pkeys, pprops->gid_tbl_len);
2996
2997 out:
2998         kfree(pprops);
2999         kfree(dprops);
3000
3001         return err;
3002 }
3003
3004 static int get_port_caps(struct mlx5_ib_dev *dev, u8 port)
3005 {
3006         /* For representors use port 1, is this is the only native
3007          * port
3008          */
3009         if (dev->is_rep)
3010                 return __get_port_caps(dev, 1);
3011         return __get_port_caps(dev, port);
3012 }
3013
3014 static u8 mlx5_get_umr_fence(u8 umr_fence_cap)
3015 {
3016         switch (umr_fence_cap) {
3017         case MLX5_CAP_UMR_FENCE_NONE:
3018                 return MLX5_FENCE_MODE_NONE;
3019         case MLX5_CAP_UMR_FENCE_SMALL:
3020                 return MLX5_FENCE_MODE_INITIATOR_SMALL;
3021         default:
3022                 return MLX5_FENCE_MODE_STRONG_ORDERING;
3023         }
3024 }
3025
3026 static int mlx5_ib_dev_res_init(struct mlx5_ib_dev *dev)
3027 {
3028         struct mlx5_ib_resources *devr = &dev->devr;
3029         struct ib_srq_init_attr attr;
3030         struct ib_device *ibdev;
3031         struct ib_cq_init_attr cq_attr = {.cqe = 1};
3032         int port;
3033         int ret = 0;
3034
3035         ibdev = &dev->ib_dev;
3036
3037         if (!MLX5_CAP_GEN(dev->mdev, xrc))
3038                 return -EOPNOTSUPP;
3039
3040         mutex_init(&devr->mutex);
3041
3042         devr->p0 = rdma_zalloc_drv_obj(ibdev, ib_pd);
3043         if (!devr->p0)
3044                 return -ENOMEM;
3045
3046         devr->p0->device  = ibdev;
3047         devr->p0->uobject = NULL;
3048         atomic_set(&devr->p0->usecnt, 0);
3049
3050         ret = mlx5_ib_alloc_pd(devr->p0, NULL);
3051         if (ret)
3052                 goto error0;
3053
3054         devr->c0 = rdma_zalloc_drv_obj(ibdev, ib_cq);
3055         if (!devr->c0) {
3056                 ret = -ENOMEM;
3057                 goto error1;
3058         }
3059
3060         devr->c0->device = &dev->ib_dev;
3061         atomic_set(&devr->c0->usecnt, 0);
3062
3063         ret = mlx5_ib_create_cq(devr->c0, &cq_attr, NULL);
3064         if (ret)
3065                 goto err_create_cq;
3066
3067         ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn0, 0);
3068         if (ret)
3069                 goto error2;
3070
3071         ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn1, 0);
3072         if (ret)
3073                 goto error3;
3074
3075         memset(&attr, 0, sizeof(attr));
3076         attr.attr.max_sge = 1;
3077         attr.attr.max_wr = 1;
3078         attr.srq_type = IB_SRQT_XRC;
3079         attr.ext.cq = devr->c0;
3080
3081         devr->s0 = rdma_zalloc_drv_obj(ibdev, ib_srq);
3082         if (!devr->s0) {
3083                 ret = -ENOMEM;
3084                 goto error4;
3085         }
3086
3087         devr->s0->device        = &dev->ib_dev;
3088         devr->s0->pd            = devr->p0;
3089         devr->s0->srq_type      = IB_SRQT_XRC;
3090         devr->s0->ext.cq        = devr->c0;
3091         ret = mlx5_ib_create_srq(devr->s0, &attr, NULL);
3092         if (ret)
3093                 goto err_create;
3094
3095         atomic_inc(&devr->s0->ext.cq->usecnt);
3096         atomic_inc(&devr->p0->usecnt);
3097         atomic_set(&devr->s0->usecnt, 0);
3098
3099         memset(&attr, 0, sizeof(attr));
3100         attr.attr.max_sge = 1;
3101         attr.attr.max_wr = 1;
3102         attr.srq_type = IB_SRQT_BASIC;
3103         devr->s1 = rdma_zalloc_drv_obj(ibdev, ib_srq);
3104         if (!devr->s1) {
3105                 ret = -ENOMEM;
3106                 goto error5;
3107         }
3108
3109         devr->s1->device        = &dev->ib_dev;
3110         devr->s1->pd            = devr->p0;
3111         devr->s1->srq_type      = IB_SRQT_BASIC;
3112         devr->s1->ext.cq        = devr->c0;
3113
3114         ret = mlx5_ib_create_srq(devr->s1, &attr, NULL);
3115         if (ret)
3116                 goto error6;
3117
3118         atomic_inc(&devr->p0->usecnt);
3119         atomic_set(&devr->s1->usecnt, 0);
3120
3121         for (port = 0; port < ARRAY_SIZE(devr->ports); ++port)
3122                 INIT_WORK(&devr->ports[port].pkey_change_work,
3123                           pkey_change_handler);
3124
3125         return 0;
3126
3127 error6:
3128         kfree(devr->s1);
3129 error5:
3130         mlx5_ib_destroy_srq(devr->s0, NULL);
3131 err_create:
3132         kfree(devr->s0);
3133 error4:
3134         mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0);
3135 error3:
3136         mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0);
3137 error2:
3138         mlx5_ib_destroy_cq(devr->c0, NULL);
3139 err_create_cq:
3140         kfree(devr->c0);
3141 error1:
3142         mlx5_ib_dealloc_pd(devr->p0, NULL);
3143 error0:
3144         kfree(devr->p0);
3145         return ret;
3146 }
3147
3148 static void mlx5_ib_dev_res_cleanup(struct mlx5_ib_dev *dev)
3149 {
3150         struct mlx5_ib_resources *devr = &dev->devr;
3151         int port;
3152
3153         mlx5_ib_destroy_srq(devr->s1, NULL);
3154         kfree(devr->s1);
3155         mlx5_ib_destroy_srq(devr->s0, NULL);
3156         kfree(devr->s0);
3157         mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0);
3158         mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0);
3159         mlx5_ib_destroy_cq(devr->c0, NULL);
3160         kfree(devr->c0);
3161         mlx5_ib_dealloc_pd(devr->p0, NULL);
3162         kfree(devr->p0);
3163
3164         /* Make sure no change P_Key work items are still executing */
3165         for (port = 0; port < ARRAY_SIZE(devr->ports); ++port)
3166                 cancel_work_sync(&devr->ports[port].pkey_change_work);
3167 }
3168
3169 static u32 get_core_cap_flags(struct ib_device *ibdev,
3170                               struct mlx5_hca_vport_context *rep)
3171 {
3172         struct mlx5_ib_dev *dev = to_mdev(ibdev);
3173         enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
3174         u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
3175         u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
3176         bool raw_support = !mlx5_core_mp_enabled(dev->mdev);
3177         u32 ret = 0;
3178
3179         if (rep->grh_required)
3180                 ret |= RDMA_CORE_CAP_IB_GRH_REQUIRED;
3181
3182         if (ll == IB_LINK_LAYER_INFINIBAND)
3183                 return ret | RDMA_CORE_PORT_IBA_IB;
3184
3185         if (raw_support)
3186                 ret |= RDMA_CORE_PORT_RAW_PACKET;
3187
3188         if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
3189                 return ret;
3190
3191         if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP))
3192                 return ret;
3193
3194         if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP)
3195                 ret |= RDMA_CORE_PORT_IBA_ROCE;
3196
3197         if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP)
3198                 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
3199
3200         return ret;
3201 }
3202
3203 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
3204                                struct ib_port_immutable *immutable)
3205 {
3206         struct ib_port_attr attr;
3207         struct mlx5_ib_dev *dev = to_mdev(ibdev);
3208         enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num);
3209         struct mlx5_hca_vport_context rep = {0};
3210         int err;
3211
3212         err = ib_query_port(ibdev, port_num, &attr);
3213         if (err)
3214                 return err;
3215
3216         if (ll == IB_LINK_LAYER_INFINIBAND) {
3217                 err = mlx5_query_hca_vport_context(dev->mdev, 0, port_num, 0,
3218                                                    &rep);
3219                 if (err)
3220                         return err;
3221         }
3222
3223         immutable->pkey_tbl_len = attr.pkey_tbl_len;
3224         immutable->gid_tbl_len = attr.gid_tbl_len;
3225         immutable->core_cap_flags = get_core_cap_flags(ibdev, &rep);
3226         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
3227
3228         return 0;
3229 }
3230
3231 static int mlx5_port_rep_immutable(struct ib_device *ibdev, u8 port_num,
3232                                    struct ib_port_immutable *immutable)
3233 {
3234         struct ib_port_attr attr;
3235         int err;
3236
3237         immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET;
3238
3239         err = ib_query_port(ibdev, port_num, &attr);
3240         if (err)
3241                 return err;
3242
3243         immutable->pkey_tbl_len = attr.pkey_tbl_len;
3244         immutable->gid_tbl_len = attr.gid_tbl_len;
3245         immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET;
3246
3247         return 0;
3248 }
3249
3250 static void get_dev_fw_str(struct ib_device *ibdev, char *str)
3251 {
3252         struct mlx5_ib_dev *dev =
3253                 container_of(ibdev, struct mlx5_ib_dev, ib_dev);
3254         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d",
3255                  fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev),
3256                  fw_rev_sub(dev->mdev));
3257 }
3258
3259 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev)
3260 {
3261         struct mlx5_core_dev *mdev = dev->mdev;
3262         struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev,
3263                                                                  MLX5_FLOW_NAMESPACE_LAG);
3264         struct mlx5_flow_table *ft;
3265         int err;
3266
3267         if (!ns || !mlx5_lag_is_roce(mdev))
3268                 return 0;
3269
3270         err = mlx5_cmd_create_vport_lag(mdev);
3271         if (err)
3272                 return err;
3273
3274         ft = mlx5_create_lag_demux_flow_table(ns, 0, 0);
3275         if (IS_ERR(ft)) {
3276                 err = PTR_ERR(ft);
3277                 goto err_destroy_vport_lag;
3278         }
3279
3280         dev->flow_db->lag_demux_ft = ft;
3281         dev->lag_active = true;
3282         return 0;
3283
3284 err_destroy_vport_lag:
3285         mlx5_cmd_destroy_vport_lag(mdev);
3286         return err;
3287 }
3288
3289 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev)
3290 {
3291         struct mlx5_core_dev *mdev = dev->mdev;
3292
3293         if (dev->lag_active) {
3294                 dev->lag_active = false;
3295
3296                 mlx5_destroy_flow_table(dev->flow_db->lag_demux_ft);
3297                 dev->flow_db->lag_demux_ft = NULL;
3298
3299                 mlx5_cmd_destroy_vport_lag(mdev);
3300         }
3301 }
3302
3303 static int mlx5_add_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num)
3304 {
3305         int err;
3306
3307         dev->port[port_num].roce.nb.notifier_call = mlx5_netdev_event;
3308         err = register_netdevice_notifier_net(mlx5_core_net(dev->mdev),
3309                                               &dev->port[port_num].roce.nb);
3310         if (err) {
3311                 dev->port[port_num].roce.nb.notifier_call = NULL;
3312                 return err;
3313         }
3314
3315         return 0;
3316 }
3317
3318 static void mlx5_remove_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num)
3319 {
3320         if (dev->port[port_num].roce.nb.notifier_call) {
3321                 unregister_netdevice_notifier_net(mlx5_core_net(dev->mdev),
3322                                                   &dev->port[port_num].roce.nb);
3323                 dev->port[port_num].roce.nb.notifier_call = NULL;
3324         }
3325 }
3326
3327 static int mlx5_enable_eth(struct mlx5_ib_dev *dev)
3328 {
3329         int err;
3330
3331         err = mlx5_nic_vport_enable_roce(dev->mdev);
3332         if (err)
3333                 return err;
3334
3335         err = mlx5_eth_lag_init(dev);
3336         if (err)
3337                 goto err_disable_roce;
3338
3339         return 0;
3340
3341 err_disable_roce:
3342         mlx5_nic_vport_disable_roce(dev->mdev);
3343
3344         return err;
3345 }
3346
3347 static void mlx5_disable_eth(struct mlx5_ib_dev *dev)
3348 {
3349         mlx5_eth_lag_cleanup(dev);
3350         mlx5_nic_vport_disable_roce(dev->mdev);
3351 }
3352
3353 static int mlx5_ib_rn_get_params(struct ib_device *device, u8 port_num,
3354                                  enum rdma_netdev_t type,
3355                                  struct rdma_netdev_alloc_params *params)
3356 {
3357         if (type != RDMA_NETDEV_IPOIB)
3358                 return -EOPNOTSUPP;
3359
3360         return mlx5_rdma_rn_get_params(to_mdev(device)->mdev, device, params);
3361 }
3362
3363 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf,
3364                                        size_t count, loff_t *pos)
3365 {
3366         struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
3367         char lbuf[20];
3368         int len;
3369
3370         len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout);
3371         return simple_read_from_buffer(buf, count, pos, lbuf, len);
3372 }
3373
3374 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf,
3375                                         size_t count, loff_t *pos)
3376 {
3377         struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
3378         u32 timeout;
3379         u32 var;
3380
3381         if (kstrtouint_from_user(buf, count, 0, &var))
3382                 return -EFAULT;
3383
3384         timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS *
3385                         1000);
3386         if (timeout != var)
3387                 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n",
3388                             timeout);
3389
3390         delay_drop->timeout = timeout;
3391
3392         return count;
3393 }
3394
3395 static const struct file_operations fops_delay_drop_timeout = {
3396         .owner  = THIS_MODULE,
3397         .open   = simple_open,
3398         .write  = delay_drop_timeout_write,
3399         .read   = delay_drop_timeout_read,
3400 };
3401
3402 static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev,
3403                                       struct mlx5_ib_multiport_info *mpi)
3404 {
3405         u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1;
3406         struct mlx5_ib_port *port = &ibdev->port[port_num];
3407         int comps;
3408         int err;
3409         int i;
3410
3411         lockdep_assert_held(&mlx5_ib_multiport_mutex);
3412
3413         mlx5_ib_cleanup_cong_debugfs(ibdev, port_num);
3414
3415         spin_lock(&port->mp.mpi_lock);
3416         if (!mpi->ibdev) {
3417                 spin_unlock(&port->mp.mpi_lock);
3418                 return;
3419         }
3420
3421         mpi->ibdev = NULL;
3422
3423         spin_unlock(&port->mp.mpi_lock);
3424         if (mpi->mdev_events.notifier_call)
3425                 mlx5_notifier_unregister(mpi->mdev, &mpi->mdev_events);
3426         mpi->mdev_events.notifier_call = NULL;
3427         mlx5_remove_netdev_notifier(ibdev, port_num);
3428         spin_lock(&port->mp.mpi_lock);
3429
3430         comps = mpi->mdev_refcnt;
3431         if (comps) {
3432                 mpi->unaffiliate = true;
3433                 init_completion(&mpi->unref_comp);
3434                 spin_unlock(&port->mp.mpi_lock);
3435
3436                 for (i = 0; i < comps; i++)
3437                         wait_for_completion(&mpi->unref_comp);
3438
3439                 spin_lock(&port->mp.mpi_lock);
3440                 mpi->unaffiliate = false;
3441         }
3442
3443         port->mp.mpi = NULL;
3444
3445         list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list);
3446
3447         spin_unlock(&port->mp.mpi_lock);
3448
3449         err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev);
3450
3451         mlx5_ib_dbg(ibdev, "unaffiliated port %d\n", port_num + 1);
3452         /* Log an error, still needed to cleanup the pointers and add
3453          * it back to the list.
3454          */
3455         if (err)
3456                 mlx5_ib_err(ibdev, "Failed to unaffiliate port %u\n",
3457                             port_num + 1);
3458
3459         ibdev->port[port_num].roce.last_port_state = IB_PORT_DOWN;
3460 }
3461
3462 static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev,
3463                                     struct mlx5_ib_multiport_info *mpi)
3464 {
3465         u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1;
3466         int err;
3467
3468         lockdep_assert_held(&mlx5_ib_multiport_mutex);
3469
3470         spin_lock(&ibdev->port[port_num].mp.mpi_lock);
3471         if (ibdev->port[port_num].mp.mpi) {
3472                 mlx5_ib_dbg(ibdev, "port %d already affiliated.\n",
3473                             port_num + 1);
3474                 spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
3475                 return false;
3476         }
3477
3478         ibdev->port[port_num].mp.mpi = mpi;
3479         mpi->ibdev = ibdev;
3480         mpi->mdev_events.notifier_call = NULL;
3481         spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
3482
3483         err = mlx5_nic_vport_affiliate_multiport(ibdev->mdev, mpi->mdev);
3484         if (err)
3485                 goto unbind;
3486
3487         err = get_port_caps(ibdev, mlx5_core_native_port_num(mpi->mdev));
3488         if (err)
3489                 goto unbind;
3490
3491         err = mlx5_add_netdev_notifier(ibdev, port_num);
3492         if (err) {
3493                 mlx5_ib_err(ibdev, "failed adding netdev notifier for port %u\n",
3494                             port_num + 1);
3495                 goto unbind;
3496         }
3497
3498         mpi->mdev_events.notifier_call = mlx5_ib_event_slave_port;
3499         mlx5_notifier_register(mpi->mdev, &mpi->mdev_events);
3500
3501         mlx5_ib_init_cong_debugfs(ibdev, port_num);
3502
3503         return true;
3504
3505 unbind:
3506         mlx5_ib_unbind_slave_port(ibdev, mpi);
3507         return false;
3508 }
3509
3510 static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev)
3511 {
3512         int port_num = mlx5_core_native_port_num(dev->mdev) - 1;
3513         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev,
3514                                                           port_num + 1);
3515         struct mlx5_ib_multiport_info *mpi;
3516         int err;
3517         int i;
3518
3519         if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
3520                 return 0;
3521
3522         err = mlx5_query_nic_vport_system_image_guid(dev->mdev,
3523                                                      &dev->sys_image_guid);
3524         if (err)
3525                 return err;
3526
3527         err = mlx5_nic_vport_enable_roce(dev->mdev);
3528         if (err)
3529                 return err;
3530
3531         mutex_lock(&mlx5_ib_multiport_mutex);
3532         for (i = 0; i < dev->num_ports; i++) {
3533                 bool bound = false;
3534
3535                 /* build a stub multiport info struct for the native port. */
3536                 if (i == port_num) {
3537                         mpi = kzalloc(sizeof(*mpi), GFP_KERNEL);
3538                         if (!mpi) {
3539                                 mutex_unlock(&mlx5_ib_multiport_mutex);
3540                                 mlx5_nic_vport_disable_roce(dev->mdev);
3541                                 return -ENOMEM;
3542                         }
3543
3544                         mpi->is_master = true;
3545                         mpi->mdev = dev->mdev;
3546                         mpi->sys_image_guid = dev->sys_image_guid;
3547                         dev->port[i].mp.mpi = mpi;
3548                         mpi->ibdev = dev;
3549                         mpi = NULL;
3550                         continue;
3551                 }
3552
3553                 list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list,
3554                                     list) {
3555                         if (dev->sys_image_guid == mpi->sys_image_guid &&
3556                             (mlx5_core_native_port_num(mpi->mdev) - 1) == i) {
3557                                 bound = mlx5_ib_bind_slave_port(dev, mpi);
3558                         }
3559
3560                         if (bound) {
3561                                 dev_dbg(mpi->mdev->device,
3562                                         "removing port from unaffiliated list.\n");
3563                                 mlx5_ib_dbg(dev, "port %d bound\n", i + 1);
3564                                 list_del(&mpi->list);
3565                                 break;
3566                         }
3567                 }
3568                 if (!bound) {
3569                         get_port_caps(dev, i + 1);
3570                         mlx5_ib_dbg(dev, "no free port found for port %d\n",
3571                                     i + 1);
3572                 }
3573         }
3574
3575         list_add_tail(&dev->ib_dev_list, &mlx5_ib_dev_list);
3576         mutex_unlock(&mlx5_ib_multiport_mutex);
3577         return err;
3578 }
3579
3580 static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev)
3581 {
3582         int port_num = mlx5_core_native_port_num(dev->mdev) - 1;
3583         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev,
3584                                                           port_num + 1);
3585         int i;
3586
3587         if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
3588                 return;
3589
3590         mutex_lock(&mlx5_ib_multiport_mutex);
3591         for (i = 0; i < dev->num_ports; i++) {
3592                 if (dev->port[i].mp.mpi) {
3593                         /* Destroy the native port stub */
3594                         if (i == port_num) {
3595                                 kfree(dev->port[i].mp.mpi);
3596                                 dev->port[i].mp.mpi = NULL;
3597                         } else {
3598                                 mlx5_ib_dbg(dev, "unbinding port_num: %d\n", i + 1);
3599                                 mlx5_ib_unbind_slave_port(dev, dev->port[i].mp.mpi);
3600                         }
3601                 }
3602         }
3603
3604         mlx5_ib_dbg(dev, "removing from devlist\n");
3605         list_del(&dev->ib_dev_list);
3606         mutex_unlock(&mlx5_ib_multiport_mutex);
3607
3608         mlx5_nic_vport_disable_roce(dev->mdev);
3609 }
3610
3611 static int mmap_obj_cleanup(struct ib_uobject *uobject,
3612                             enum rdma_remove_reason why,
3613                             struct uverbs_attr_bundle *attrs)
3614 {
3615         struct mlx5_user_mmap_entry *obj = uobject->object;
3616
3617         rdma_user_mmap_entry_remove(&obj->rdma_entry);
3618         return 0;
3619 }
3620
3621 static int mlx5_rdma_user_mmap_entry_insert(struct mlx5_ib_ucontext *c,
3622                                             struct mlx5_user_mmap_entry *entry,
3623                                             size_t length)
3624 {
3625         return rdma_user_mmap_entry_insert_range(
3626                 &c->ibucontext, &entry->rdma_entry, length,
3627                 (MLX5_IB_MMAP_OFFSET_START << 16),
3628                 ((MLX5_IB_MMAP_OFFSET_END << 16) + (1UL << 16) - 1));
3629 }
3630
3631 static struct mlx5_user_mmap_entry *
3632 alloc_var_entry(struct mlx5_ib_ucontext *c)
3633 {
3634         struct mlx5_user_mmap_entry *entry;
3635         struct mlx5_var_table *var_table;
3636         u32 page_idx;
3637         int err;
3638
3639         var_table = &to_mdev(c->ibucontext.device)->var_table;
3640         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3641         if (!entry)
3642                 return ERR_PTR(-ENOMEM);
3643
3644         mutex_lock(&var_table->bitmap_lock);
3645         page_idx = find_first_zero_bit(var_table->bitmap,
3646                                        var_table->num_var_hw_entries);
3647         if (page_idx >= var_table->num_var_hw_entries) {
3648                 err = -ENOSPC;
3649                 mutex_unlock(&var_table->bitmap_lock);
3650                 goto end;
3651         }
3652
3653         set_bit(page_idx, var_table->bitmap);
3654         mutex_unlock(&var_table->bitmap_lock);
3655
3656         entry->address = var_table->hw_start_addr +
3657                                 (page_idx * var_table->stride_size);
3658         entry->page_idx = page_idx;
3659         entry->mmap_flag = MLX5_IB_MMAP_TYPE_VAR;
3660
3661         err = mlx5_rdma_user_mmap_entry_insert(c, entry,
3662                                                var_table->stride_size);
3663         if (err)
3664                 goto err_insert;
3665
3666         return entry;
3667
3668 err_insert:
3669         mutex_lock(&var_table->bitmap_lock);
3670         clear_bit(page_idx, var_table->bitmap);
3671         mutex_unlock(&var_table->bitmap_lock);
3672 end:
3673         kfree(entry);
3674         return ERR_PTR(err);
3675 }
3676
3677 static int UVERBS_HANDLER(MLX5_IB_METHOD_VAR_OBJ_ALLOC)(
3678         struct uverbs_attr_bundle *attrs)
3679 {
3680         struct ib_uobject *uobj = uverbs_attr_get_uobject(
3681                 attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE);
3682         struct mlx5_ib_ucontext *c;
3683         struct mlx5_user_mmap_entry *entry;
3684         u64 mmap_offset;
3685         u32 length;
3686         int err;
3687
3688         c = to_mucontext(ib_uverbs_get_ucontext(attrs));
3689         if (IS_ERR(c))
3690                 return PTR_ERR(c);
3691
3692         entry = alloc_var_entry(c);
3693         if (IS_ERR(entry))
3694                 return PTR_ERR(entry);
3695
3696         mmap_offset = mlx5_entry_to_mmap_offset(entry);
3697         length = entry->rdma_entry.npages * PAGE_SIZE;
3698         uobj->object = entry;
3699         uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE);
3700
3701         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET,
3702                              &mmap_offset, sizeof(mmap_offset));
3703         if (err)
3704                 return err;
3705
3706         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID,
3707                              &entry->page_idx, sizeof(entry->page_idx));
3708         if (err)
3709                 return err;
3710
3711         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH,
3712                              &length, sizeof(length));
3713         return err;
3714 }
3715
3716 DECLARE_UVERBS_NAMED_METHOD(
3717         MLX5_IB_METHOD_VAR_OBJ_ALLOC,
3718         UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE,
3719                         MLX5_IB_OBJECT_VAR,
3720                         UVERBS_ACCESS_NEW,
3721                         UA_MANDATORY),
3722         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID,
3723                            UVERBS_ATTR_TYPE(u32),
3724                            UA_MANDATORY),
3725         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH,
3726                            UVERBS_ATTR_TYPE(u32),
3727                            UA_MANDATORY),
3728         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET,
3729                             UVERBS_ATTR_TYPE(u64),
3730                             UA_MANDATORY));
3731
3732 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
3733         MLX5_IB_METHOD_VAR_OBJ_DESTROY,
3734         UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_DESTROY_HANDLE,
3735                         MLX5_IB_OBJECT_VAR,
3736                         UVERBS_ACCESS_DESTROY,
3737                         UA_MANDATORY));
3738
3739 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_VAR,
3740                             UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup),
3741                             &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_ALLOC),
3742                             &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_DESTROY));
3743
3744 static bool var_is_supported(struct ib_device *device)
3745 {
3746         struct mlx5_ib_dev *dev = to_mdev(device);
3747
3748         return (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
3749                         MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q);
3750 }
3751
3752 static struct mlx5_user_mmap_entry *
3753 alloc_uar_entry(struct mlx5_ib_ucontext *c,
3754                 enum mlx5_ib_uapi_uar_alloc_type alloc_type)
3755 {
3756         struct mlx5_user_mmap_entry *entry;
3757         struct mlx5_ib_dev *dev;
3758         u32 uar_index;
3759         int err;
3760
3761         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3762         if (!entry)
3763                 return ERR_PTR(-ENOMEM);
3764
3765         dev = to_mdev(c->ibucontext.device);
3766         err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index);
3767         if (err)
3768                 goto end;
3769
3770         entry->page_idx = uar_index;
3771         entry->address = uar_index2paddress(dev, uar_index);
3772         if (alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF)
3773                 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_WC;
3774         else
3775                 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_NC;
3776
3777         err = mlx5_rdma_user_mmap_entry_insert(c, entry, PAGE_SIZE);
3778         if (err)
3779                 goto err_insert;
3780
3781         return entry;
3782
3783 err_insert:
3784         mlx5_cmd_free_uar(dev->mdev, uar_index);
3785 end:
3786         kfree(entry);
3787         return ERR_PTR(err);
3788 }
3789
3790 static int UVERBS_HANDLER(MLX5_IB_METHOD_UAR_OBJ_ALLOC)(
3791         struct uverbs_attr_bundle *attrs)
3792 {
3793         struct ib_uobject *uobj = uverbs_attr_get_uobject(
3794                 attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE);
3795         enum mlx5_ib_uapi_uar_alloc_type alloc_type;
3796         struct mlx5_ib_ucontext *c;
3797         struct mlx5_user_mmap_entry *entry;
3798         u64 mmap_offset;
3799         u32 length;
3800         int err;
3801
3802         c = to_mucontext(ib_uverbs_get_ucontext(attrs));
3803         if (IS_ERR(c))
3804                 return PTR_ERR(c);
3805
3806         err = uverbs_get_const(&alloc_type, attrs,
3807                                MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE);
3808         if (err)
3809                 return err;
3810
3811         if (alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF &&
3812             alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_NC)
3813                 return -EOPNOTSUPP;
3814
3815         if (!to_mdev(c->ibucontext.device)->wc_support &&
3816             alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF)
3817                 return -EOPNOTSUPP;
3818
3819         entry = alloc_uar_entry(c, alloc_type);
3820         if (IS_ERR(entry))
3821                 return PTR_ERR(entry);
3822
3823         mmap_offset = mlx5_entry_to_mmap_offset(entry);
3824         length = entry->rdma_entry.npages * PAGE_SIZE;
3825         uobj->object = entry;
3826         uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE);
3827
3828         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET,
3829                              &mmap_offset, sizeof(mmap_offset));
3830         if (err)
3831                 return err;
3832
3833         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID,
3834                              &entry->page_idx, sizeof(entry->page_idx));
3835         if (err)
3836                 return err;
3837
3838         err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH,
3839                              &length, sizeof(length));
3840         return err;
3841 }
3842
3843 DECLARE_UVERBS_NAMED_METHOD(
3844         MLX5_IB_METHOD_UAR_OBJ_ALLOC,
3845         UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE,
3846                         MLX5_IB_OBJECT_UAR,
3847                         UVERBS_ACCESS_NEW,
3848                         UA_MANDATORY),
3849         UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE,
3850                              enum mlx5_ib_uapi_uar_alloc_type,
3851                              UA_MANDATORY),
3852         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID,
3853                            UVERBS_ATTR_TYPE(u32),
3854                            UA_MANDATORY),
3855         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH,
3856                            UVERBS_ATTR_TYPE(u32),
3857                            UA_MANDATORY),
3858         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET,
3859                             UVERBS_ATTR_TYPE(u64),
3860                             UA_MANDATORY));
3861
3862 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
3863         MLX5_IB_METHOD_UAR_OBJ_DESTROY,
3864         UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_DESTROY_HANDLE,
3865                         MLX5_IB_OBJECT_UAR,
3866                         UVERBS_ACCESS_DESTROY,
3867                         UA_MANDATORY));
3868
3869 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_UAR,
3870                             UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup),
3871                             &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_ALLOC),
3872                             &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_DESTROY));
3873
3874 ADD_UVERBS_ATTRIBUTES_SIMPLE(
3875         mlx5_ib_dm,
3876         UVERBS_OBJECT_DM,
3877         UVERBS_METHOD_DM_ALLOC,
3878         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
3879                             UVERBS_ATTR_TYPE(u64),
3880                             UA_MANDATORY),
3881         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
3882                             UVERBS_ATTR_TYPE(u16),
3883                             UA_OPTIONAL),
3884         UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE,
3885                              enum mlx5_ib_uapi_dm_type,
3886                              UA_OPTIONAL));
3887
3888 ADD_UVERBS_ATTRIBUTES_SIMPLE(
3889         mlx5_ib_flow_action,
3890         UVERBS_OBJECT_FLOW_ACTION,
3891         UVERBS_METHOD_FLOW_ACTION_ESP_CREATE,
3892         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS,
3893                              enum mlx5_ib_uapi_flow_action_flags));
3894
3895 ADD_UVERBS_ATTRIBUTES_SIMPLE(
3896         mlx5_ib_query_context,
3897         UVERBS_OBJECT_DEVICE,
3898         UVERBS_METHOD_QUERY_CONTEXT,
3899         UVERBS_ATTR_PTR_OUT(
3900                 MLX5_IB_ATTR_QUERY_CONTEXT_RESP_UCTX,
3901                 UVERBS_ATTR_STRUCT(struct mlx5_ib_alloc_ucontext_resp,
3902                                    dump_fill_mkey),
3903                 UA_MANDATORY));
3904
3905 static const struct uapi_definition mlx5_ib_defs[] = {
3906         UAPI_DEF_CHAIN(mlx5_ib_devx_defs),
3907         UAPI_DEF_CHAIN(mlx5_ib_flow_defs),
3908         UAPI_DEF_CHAIN(mlx5_ib_qos_defs),
3909         UAPI_DEF_CHAIN(mlx5_ib_std_types_defs),
3910
3911         UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
3912                                 &mlx5_ib_flow_action),
3913         UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm),
3914         UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DEVICE, &mlx5_ib_query_context),
3915         UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_VAR,
3916                                 UAPI_DEF_IS_OBJ_SUPPORTED(var_is_supported)),
3917         UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_UAR),
3918         {}
3919 };
3920
3921 static void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev)
3922 {
3923         mlx5_ib_cleanup_multiport_master(dev);
3924         WARN_ON(!xa_empty(&dev->odp_mkeys));
3925         cleanup_srcu_struct(&dev->odp_srcu);
3926
3927         WARN_ON(!xa_empty(&dev->sig_mrs));
3928         WARN_ON(!bitmap_empty(dev->dm.memic_alloc_pages, MLX5_MAX_MEMIC_PAGES));
3929 }
3930
3931 static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
3932 {
3933         struct mlx5_core_dev *mdev = dev->mdev;
3934         int err;
3935         int i;
3936
3937         for (i = 0; i < dev->num_ports; i++) {
3938                 spin_lock_init(&dev->port[i].mp.mpi_lock);
3939                 rwlock_init(&dev->port[i].roce.netdev_lock);
3940                 dev->port[i].roce.dev = dev;
3941                 dev->port[i].roce.native_port_num = i + 1;
3942                 dev->port[i].roce.last_port_state = IB_PORT_DOWN;
3943         }
3944
3945         mlx5_ib_internal_fill_odp_caps(dev);
3946
3947         err = mlx5_ib_init_multiport_master(dev);
3948         if (err)
3949                 return err;
3950
3951         err = set_has_smi_cap(dev);
3952         if (err)
3953                 return err;
3954
3955         if (!mlx5_core_mp_enabled(mdev)) {
3956                 for (i = 1; i <= dev->num_ports; i++) {
3957                         err = get_port_caps(dev, i);
3958                         if (err)
3959                                 break;
3960                 }
3961         } else {
3962                 err = get_port_caps(dev, mlx5_core_native_port_num(mdev));
3963         }
3964         if (err)
3965                 goto err_mp;
3966
3967         if (mlx5_use_mad_ifc(dev))
3968                 get_ext_port_caps(dev);
3969
3970         dev->ib_dev.node_type           = RDMA_NODE_IB_CA;
3971         dev->ib_dev.local_dma_lkey      = 0 /* not supported for now */;
3972         dev->ib_dev.phys_port_cnt       = dev->num_ports;
3973         dev->ib_dev.num_comp_vectors    = mlx5_comp_vectors_count(mdev);
3974         dev->ib_dev.dev.parent          = mdev->device;
3975         dev->ib_dev.lag_flags           = RDMA_LAG_FLAGS_HASH_ALL_SLAVES;
3976
3977         mutex_init(&dev->cap_mask_mutex);
3978         INIT_LIST_HEAD(&dev->qp_list);
3979         spin_lock_init(&dev->reset_flow_resource_lock);
3980         xa_init(&dev->odp_mkeys);
3981         xa_init(&dev->sig_mrs);
3982         atomic_set(&dev->mkey_var, 0);
3983
3984         spin_lock_init(&dev->dm.lock);
3985         dev->dm.dev = mdev;
3986
3987         err = init_srcu_struct(&dev->odp_srcu);
3988         if (err)
3989                 goto err_mp;
3990
3991         return 0;
3992
3993 err_mp:
3994         mlx5_ib_cleanup_multiport_master(dev);
3995
3996         return -ENOMEM;
3997 }
3998
3999 static int mlx5_ib_enable_driver(struct ib_device *dev)
4000 {
4001         struct mlx5_ib_dev *mdev = to_mdev(dev);
4002         int ret;
4003
4004         ret = mlx5_ib_test_wc(mdev);
4005         mlx5_ib_dbg(mdev, "Write-Combining %s",
4006                     mdev->wc_support ? "supported" : "not supported");
4007
4008         return ret;
4009 }
4010
4011 static const struct ib_device_ops mlx5_ib_dev_ops = {
4012         .owner = THIS_MODULE,
4013         .driver_id = RDMA_DRIVER_MLX5,
4014         .uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION,
4015
4016         .add_gid = mlx5_ib_add_gid,
4017         .alloc_mr = mlx5_ib_alloc_mr,
4018         .alloc_mr_integrity = mlx5_ib_alloc_mr_integrity,
4019         .alloc_pd = mlx5_ib_alloc_pd,
4020         .alloc_ucontext = mlx5_ib_alloc_ucontext,
4021         .attach_mcast = mlx5_ib_mcg_attach,
4022         .check_mr_status = mlx5_ib_check_mr_status,
4023         .create_ah = mlx5_ib_create_ah,
4024         .create_cq = mlx5_ib_create_cq,
4025         .create_qp = mlx5_ib_create_qp,
4026         .create_srq = mlx5_ib_create_srq,
4027         .dealloc_pd = mlx5_ib_dealloc_pd,
4028         .dealloc_ucontext = mlx5_ib_dealloc_ucontext,
4029         .del_gid = mlx5_ib_del_gid,
4030         .dereg_mr = mlx5_ib_dereg_mr,
4031         .destroy_ah = mlx5_ib_destroy_ah,
4032         .destroy_cq = mlx5_ib_destroy_cq,
4033         .destroy_qp = mlx5_ib_destroy_qp,
4034         .destroy_srq = mlx5_ib_destroy_srq,
4035         .detach_mcast = mlx5_ib_mcg_detach,
4036         .disassociate_ucontext = mlx5_ib_disassociate_ucontext,
4037         .drain_rq = mlx5_ib_drain_rq,
4038         .drain_sq = mlx5_ib_drain_sq,
4039         .enable_driver = mlx5_ib_enable_driver,
4040         .get_dev_fw_str = get_dev_fw_str,
4041         .get_dma_mr = mlx5_ib_get_dma_mr,
4042         .get_link_layer = mlx5_ib_port_link_layer,
4043         .map_mr_sg = mlx5_ib_map_mr_sg,
4044         .map_mr_sg_pi = mlx5_ib_map_mr_sg_pi,
4045         .mmap = mlx5_ib_mmap,
4046         .mmap_free = mlx5_ib_mmap_free,
4047         .modify_cq = mlx5_ib_modify_cq,
4048         .modify_device = mlx5_ib_modify_device,
4049         .modify_port = mlx5_ib_modify_port,
4050         .modify_qp = mlx5_ib_modify_qp,
4051         .modify_srq = mlx5_ib_modify_srq,
4052         .poll_cq = mlx5_ib_poll_cq,
4053         .post_recv = mlx5_ib_post_recv_nodrain,
4054         .post_send = mlx5_ib_post_send_nodrain,
4055         .post_srq_recv = mlx5_ib_post_srq_recv,
4056         .process_mad = mlx5_ib_process_mad,
4057         .query_ah = mlx5_ib_query_ah,
4058         .query_device = mlx5_ib_query_device,
4059         .query_gid = mlx5_ib_query_gid,
4060         .query_pkey = mlx5_ib_query_pkey,
4061         .query_qp = mlx5_ib_query_qp,
4062         .query_srq = mlx5_ib_query_srq,
4063         .query_ucontext = mlx5_ib_query_ucontext,
4064         .reg_user_mr = mlx5_ib_reg_user_mr,
4065         .req_notify_cq = mlx5_ib_arm_cq,
4066         .rereg_user_mr = mlx5_ib_rereg_user_mr,
4067         .resize_cq = mlx5_ib_resize_cq,
4068
4069         INIT_RDMA_OBJ_SIZE(ib_ah, mlx5_ib_ah, ibah),
4070         INIT_RDMA_OBJ_SIZE(ib_counters, mlx5_ib_mcounters, ibcntrs),
4071         INIT_RDMA_OBJ_SIZE(ib_cq, mlx5_ib_cq, ibcq),
4072         INIT_RDMA_OBJ_SIZE(ib_pd, mlx5_ib_pd, ibpd),
4073         INIT_RDMA_OBJ_SIZE(ib_srq, mlx5_ib_srq, ibsrq),
4074         INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx5_ib_ucontext, ibucontext),
4075 };
4076
4077 static const struct ib_device_ops mlx5_ib_dev_ipoib_enhanced_ops = {
4078         .rdma_netdev_get_params = mlx5_ib_rn_get_params,
4079 };
4080
4081 static const struct ib_device_ops mlx5_ib_dev_sriov_ops = {
4082         .get_vf_config = mlx5_ib_get_vf_config,
4083         .get_vf_guid = mlx5_ib_get_vf_guid,
4084         .get_vf_stats = mlx5_ib_get_vf_stats,
4085         .set_vf_guid = mlx5_ib_set_vf_guid,
4086         .set_vf_link_state = mlx5_ib_set_vf_link_state,
4087 };
4088
4089 static const struct ib_device_ops mlx5_ib_dev_mw_ops = {
4090         .alloc_mw = mlx5_ib_alloc_mw,
4091         .dealloc_mw = mlx5_ib_dealloc_mw,
4092
4093         INIT_RDMA_OBJ_SIZE(ib_mw, mlx5_ib_mw, ibmw),
4094 };
4095
4096 static const struct ib_device_ops mlx5_ib_dev_xrc_ops = {
4097         .alloc_xrcd = mlx5_ib_alloc_xrcd,
4098         .dealloc_xrcd = mlx5_ib_dealloc_xrcd,
4099
4100         INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx5_ib_xrcd, ibxrcd),
4101 };
4102
4103 static const struct ib_device_ops mlx5_ib_dev_dm_ops = {
4104         .alloc_dm = mlx5_ib_alloc_dm,
4105         .dealloc_dm = mlx5_ib_dealloc_dm,
4106         .reg_dm_mr = mlx5_ib_reg_dm_mr,
4107 };
4108
4109 static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev)
4110 {
4111         struct mlx5_core_dev *mdev = dev->mdev;
4112         struct mlx5_var_table *var_table = &dev->var_table;
4113         u8 log_doorbell_bar_size;
4114         u8 log_doorbell_stride;
4115         u64 bar_size;
4116
4117         log_doorbell_bar_size = MLX5_CAP_DEV_VDPA_EMULATION(mdev,
4118                                         log_doorbell_bar_size);
4119         log_doorbell_stride = MLX5_CAP_DEV_VDPA_EMULATION(mdev,
4120                                         log_doorbell_stride);
4121         var_table->hw_start_addr = dev->mdev->bar_addr +
4122                                 MLX5_CAP64_DEV_VDPA_EMULATION(mdev,
4123                                         doorbell_bar_offset);
4124         bar_size = (1ULL << log_doorbell_bar_size) * 4096;
4125         var_table->stride_size = 1ULL << log_doorbell_stride;
4126         var_table->num_var_hw_entries = div_u64(bar_size,
4127                                                 var_table->stride_size);
4128         mutex_init(&var_table->bitmap_lock);
4129         var_table->bitmap = bitmap_zalloc(var_table->num_var_hw_entries,
4130                                           GFP_KERNEL);
4131         return (var_table->bitmap) ? 0 : -ENOMEM;
4132 }
4133
4134 static void mlx5_ib_stage_caps_cleanup(struct mlx5_ib_dev *dev)
4135 {
4136         bitmap_free(dev->var_table.bitmap);
4137 }
4138
4139 static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
4140 {
4141         struct mlx5_core_dev *mdev = dev->mdev;
4142         int err;
4143
4144         dev->ib_dev.uverbs_cmd_mask     =
4145                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
4146                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
4147                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
4148                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
4149                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
4150                 (1ull << IB_USER_VERBS_CMD_CREATE_AH)           |
4151                 (1ull << IB_USER_VERBS_CMD_DESTROY_AH)          |
4152                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
4153                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
4154                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
4155                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
4156                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
4157                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
4158                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
4159                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
4160                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
4161                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
4162                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
4163                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
4164                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
4165                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
4166                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
4167                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
4168                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
4169                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
4170                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
4171         dev->ib_dev.uverbs_ex_cmd_mask =
4172                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE)     |
4173                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ)        |
4174                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP)        |
4175                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_QP)        |
4176                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ)        |
4177                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW)      |
4178                 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
4179
4180         if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
4181             IS_ENABLED(CONFIG_MLX5_CORE_IPOIB))
4182                 ib_set_device_ops(&dev->ib_dev,
4183                                   &mlx5_ib_dev_ipoib_enhanced_ops);
4184
4185         if (mlx5_core_is_pf(mdev))
4186                 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_sriov_ops);
4187
4188         dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence));
4189
4190         if (MLX5_CAP_GEN(mdev, imaicl)) {
4191                 dev->ib_dev.uverbs_cmd_mask |=
4192                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW)    |
4193                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
4194                 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_mw_ops);
4195         }
4196
4197         if (MLX5_CAP_GEN(mdev, xrc)) {
4198                 dev->ib_dev.uverbs_cmd_mask |=
4199                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
4200                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
4201                 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_xrc_ops);
4202         }
4203
4204         if (MLX5_CAP_DEV_MEM(mdev, memic) ||
4205             MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
4206             MLX5_GENERAL_OBJ_TYPES_CAP_SW_ICM)
4207                 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_dm_ops);
4208
4209         ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_ops);
4210
4211         if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS))
4212                 dev->ib_dev.driver_def = mlx5_ib_defs;
4213
4214         err = init_node_data(dev);
4215         if (err)
4216                 return err;
4217
4218         if ((MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) &&
4219             (MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) ||
4220              MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
4221                 mutex_init(&dev->lb.mutex);
4222
4223         if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
4224                         MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) {
4225                 err = mlx5_ib_init_var_table(dev);
4226                 if (err)
4227                         return err;
4228         }
4229
4230         dev->ib_dev.use_cq_dim = true;
4231
4232         return 0;
4233 }
4234
4235 static const struct ib_device_ops mlx5_ib_dev_port_ops = {
4236         .get_port_immutable = mlx5_port_immutable,
4237         .query_port = mlx5_ib_query_port,
4238 };
4239
4240 static int mlx5_ib_stage_non_default_cb(struct mlx5_ib_dev *dev)
4241 {
4242         ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_ops);
4243         return 0;
4244 }
4245
4246 static const struct ib_device_ops mlx5_ib_dev_port_rep_ops = {
4247         .get_port_immutable = mlx5_port_rep_immutable,
4248         .query_port = mlx5_ib_rep_query_port,
4249 };
4250
4251 static int mlx5_ib_stage_raw_eth_non_default_cb(struct mlx5_ib_dev *dev)
4252 {
4253         ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_rep_ops);
4254         return 0;
4255 }
4256
4257 static const struct ib_device_ops mlx5_ib_dev_common_roce_ops = {
4258         .create_rwq_ind_table = mlx5_ib_create_rwq_ind_table,
4259         .create_wq = mlx5_ib_create_wq,
4260         .destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table,
4261         .destroy_wq = mlx5_ib_destroy_wq,
4262         .get_netdev = mlx5_ib_get_netdev,
4263         .modify_wq = mlx5_ib_modify_wq,
4264
4265         INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx5_ib_rwq_ind_table,
4266                            ib_rwq_ind_tbl),
4267 };
4268
4269 static int mlx5_ib_roce_init(struct mlx5_ib_dev *dev)
4270 {
4271         struct mlx5_core_dev *mdev = dev->mdev;
4272         enum rdma_link_layer ll;
4273         int port_type_cap;
4274         u8 port_num = 0;
4275         int err;
4276
4277         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
4278         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
4279
4280         if (ll == IB_LINK_LAYER_ETHERNET) {
4281                 dev->ib_dev.uverbs_ex_cmd_mask |=
4282                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
4283                         (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
4284                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
4285                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
4286                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
4287                 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_common_roce_ops);
4288
4289                 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
4290
4291                 /* Register only for native ports */
4292                 err = mlx5_add_netdev_notifier(dev, port_num);
4293                 if (err || dev->is_rep || !mlx5_is_roce_enabled(mdev))
4294                         /*
4295                          * We don't enable ETH interface for
4296                          * 1. IB representors
4297                          * 2. User disabled ROCE through devlink interface
4298                          */
4299                         return err;
4300
4301                 err = mlx5_enable_eth(dev);
4302                 if (err)
4303                         goto cleanup;
4304         }
4305
4306         return 0;
4307 cleanup:
4308         mlx5_remove_netdev_notifier(dev, port_num);
4309         return err;
4310 }
4311
4312 static void mlx5_ib_roce_cleanup(struct mlx5_ib_dev *dev)
4313 {
4314         struct mlx5_core_dev *mdev = dev->mdev;
4315         enum rdma_link_layer ll;
4316         int port_type_cap;
4317         u8 port_num;
4318
4319         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
4320         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
4321
4322         if (ll == IB_LINK_LAYER_ETHERNET) {
4323                 if (!dev->is_rep)
4324                         mlx5_disable_eth(dev);
4325
4326                 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
4327                 mlx5_remove_netdev_notifier(dev, port_num);
4328         }
4329 }
4330
4331 static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev)
4332 {
4333         mlx5_ib_init_cong_debugfs(dev,
4334                                   mlx5_core_native_port_num(dev->mdev) - 1);
4335         return 0;
4336 }
4337
4338 static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev)
4339 {
4340         mlx5_ib_cleanup_cong_debugfs(dev,
4341                                      mlx5_core_native_port_num(dev->mdev) - 1);
4342 }
4343
4344 static int mlx5_ib_stage_uar_init(struct mlx5_ib_dev *dev)
4345 {
4346         dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev);
4347         return PTR_ERR_OR_ZERO(dev->mdev->priv.uar);
4348 }
4349
4350 static void mlx5_ib_stage_uar_cleanup(struct mlx5_ib_dev *dev)
4351 {
4352         mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar);
4353 }
4354
4355 static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev)
4356 {
4357         int err;
4358
4359         err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false);
4360         if (err)
4361                 return err;
4362
4363         err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true);
4364         if (err)
4365                 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
4366
4367         return err;
4368 }
4369
4370 static void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev)
4371 {
4372         mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
4373         mlx5_free_bfreg(dev->mdev, &dev->bfreg);
4374 }
4375
4376 static int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev)
4377 {
4378         const char *name;
4379
4380         rdma_set_device_sysfs_group(&dev->ib_dev, &mlx5_attr_group);
4381         if (!mlx5_lag_is_roce(dev->mdev))
4382                 name = "mlx5_%d";
4383         else
4384                 name = "mlx5_bond_%d";
4385         return ib_register_device(&dev->ib_dev, name, &dev->mdev->pdev->dev);
4386 }
4387
4388 static void mlx5_ib_stage_pre_ib_reg_umr_cleanup(struct mlx5_ib_dev *dev)
4389 {
4390         int err;
4391
4392         err = mlx5_mr_cache_cleanup(dev);
4393         if (err)
4394                 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
4395
4396         if (dev->umrc.qp)
4397                 mlx5_ib_destroy_qp(dev->umrc.qp, NULL);
4398         if (dev->umrc.cq)
4399                 ib_free_cq(dev->umrc.cq);
4400         if (dev->umrc.pd)
4401                 ib_dealloc_pd(dev->umrc.pd);
4402 }
4403
4404 static void mlx5_ib_stage_ib_reg_cleanup(struct mlx5_ib_dev *dev)
4405 {
4406         ib_unregister_device(&dev->ib_dev);
4407 }
4408
4409 enum {
4410         MAX_UMR_WR = 128,
4411 };
4412
4413 static int mlx5_ib_stage_post_ib_reg_umr_init(struct mlx5_ib_dev *dev)
4414 {
4415         struct ib_qp_init_attr *init_attr = NULL;
4416         struct ib_qp_attr *attr = NULL;
4417         struct ib_pd *pd;
4418         struct ib_cq *cq;
4419         struct ib_qp *qp;
4420         int ret;
4421
4422         attr = kzalloc(sizeof(*attr), GFP_KERNEL);
4423         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
4424         if (!attr || !init_attr) {
4425                 ret = -ENOMEM;
4426                 goto error_0;
4427         }
4428
4429         pd = ib_alloc_pd(&dev->ib_dev, 0);
4430         if (IS_ERR(pd)) {
4431                 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
4432                 ret = PTR_ERR(pd);
4433                 goto error_0;
4434         }
4435
4436         cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ);
4437         if (IS_ERR(cq)) {
4438                 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
4439                 ret = PTR_ERR(cq);
4440                 goto error_2;
4441         }
4442
4443         init_attr->send_cq = cq;
4444         init_attr->recv_cq = cq;
4445         init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
4446         init_attr->cap.max_send_wr = MAX_UMR_WR;
4447         init_attr->cap.max_send_sge = 1;
4448         init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
4449         init_attr->port_num = 1;
4450         qp = mlx5_ib_create_qp(pd, init_attr, NULL);
4451         if (IS_ERR(qp)) {
4452                 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
4453                 ret = PTR_ERR(qp);
4454                 goto error_3;
4455         }
4456         qp->device     = &dev->ib_dev;
4457         qp->real_qp    = qp;
4458         qp->uobject    = NULL;
4459         qp->qp_type    = MLX5_IB_QPT_REG_UMR;
4460         qp->send_cq    = init_attr->send_cq;
4461         qp->recv_cq    = init_attr->recv_cq;
4462
4463         attr->qp_state = IB_QPS_INIT;
4464         attr->port_num = 1;
4465         ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
4466                                 IB_QP_PORT, NULL);
4467         if (ret) {
4468                 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
4469                 goto error_4;
4470         }
4471
4472         memset(attr, 0, sizeof(*attr));
4473         attr->qp_state = IB_QPS_RTR;
4474         attr->path_mtu = IB_MTU_256;
4475
4476         ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
4477         if (ret) {
4478                 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
4479                 goto error_4;
4480         }
4481
4482         memset(attr, 0, sizeof(*attr));
4483         attr->qp_state = IB_QPS_RTS;
4484         ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
4485         if (ret) {
4486                 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
4487                 goto error_4;
4488         }
4489
4490         dev->umrc.qp = qp;
4491         dev->umrc.cq = cq;
4492         dev->umrc.pd = pd;
4493
4494         sema_init(&dev->umrc.sem, MAX_UMR_WR);
4495         ret = mlx5_mr_cache_init(dev);
4496         if (ret) {
4497                 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
4498                 goto error_4;
4499         }
4500
4501         kfree(attr);
4502         kfree(init_attr);
4503
4504         return 0;
4505
4506 error_4:
4507         mlx5_ib_destroy_qp(qp, NULL);
4508         dev->umrc.qp = NULL;
4509
4510 error_3:
4511         ib_free_cq(cq);
4512         dev->umrc.cq = NULL;
4513
4514 error_2:
4515         ib_dealloc_pd(pd);
4516         dev->umrc.pd = NULL;
4517
4518 error_0:
4519         kfree(attr);
4520         kfree(init_attr);
4521         return ret;
4522 }
4523
4524 static int mlx5_ib_stage_delay_drop_init(struct mlx5_ib_dev *dev)
4525 {
4526         struct dentry *root;
4527
4528         if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
4529                 return 0;
4530
4531         mutex_init(&dev->delay_drop.lock);
4532         dev->delay_drop.dev = dev;
4533         dev->delay_drop.activate = false;
4534         dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000;
4535         INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler);
4536         atomic_set(&dev->delay_drop.rqs_cnt, 0);
4537         atomic_set(&dev->delay_drop.events_cnt, 0);
4538
4539         if (!mlx5_debugfs_root)
4540                 return 0;
4541
4542         root = debugfs_create_dir("delay_drop", dev->mdev->priv.dbg_root);
4543         dev->delay_drop.dir_debugfs = root;
4544
4545         debugfs_create_atomic_t("num_timeout_events", 0400, root,
4546                                 &dev->delay_drop.events_cnt);
4547         debugfs_create_atomic_t("num_rqs", 0400, root,
4548                                 &dev->delay_drop.rqs_cnt);
4549         debugfs_create_file("timeout", 0600, root, &dev->delay_drop,
4550                             &fops_delay_drop_timeout);
4551         return 0;
4552 }
4553
4554 static void mlx5_ib_stage_delay_drop_cleanup(struct mlx5_ib_dev *dev)
4555 {
4556         if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
4557                 return;
4558
4559         cancel_work_sync(&dev->delay_drop.delay_drop_work);
4560         if (!dev->delay_drop.dir_debugfs)
4561                 return;
4562
4563         debugfs_remove_recursive(dev->delay_drop.dir_debugfs);
4564         dev->delay_drop.dir_debugfs = NULL;
4565 }
4566
4567 static int mlx5_ib_stage_dev_notifier_init(struct mlx5_ib_dev *dev)
4568 {
4569         dev->mdev_events.notifier_call = mlx5_ib_event;
4570         mlx5_notifier_register(dev->mdev, &dev->mdev_events);
4571         return 0;
4572 }
4573
4574 static void mlx5_ib_stage_dev_notifier_cleanup(struct mlx5_ib_dev *dev)
4575 {
4576         mlx5_notifier_unregister(dev->mdev, &dev->mdev_events);
4577 }
4578
4579 void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
4580                       const struct mlx5_ib_profile *profile,
4581                       int stage)
4582 {
4583         dev->ib_active = false;
4584
4585         /* Number of stages to cleanup */
4586         while (stage) {
4587                 stage--;
4588                 if (profile->stage[stage].cleanup)
4589                         profile->stage[stage].cleanup(dev);
4590         }
4591
4592         kfree(dev->port);
4593         ib_dealloc_device(&dev->ib_dev);
4594 }
4595
4596 void *__mlx5_ib_add(struct mlx5_ib_dev *dev,
4597                     const struct mlx5_ib_profile *profile)
4598 {
4599         int err;
4600         int i;
4601
4602         dev->profile = profile;
4603
4604         for (i = 0; i < MLX5_IB_STAGE_MAX; i++) {
4605                 if (profile->stage[i].init) {
4606                         err = profile->stage[i].init(dev);
4607                         if (err)
4608                                 goto err_out;
4609                 }
4610         }
4611
4612         dev->ib_active = true;
4613
4614         return dev;
4615
4616 err_out:
4617         __mlx5_ib_remove(dev, profile, i);
4618
4619         return NULL;
4620 }
4621
4622 static const struct mlx5_ib_profile pf_profile = {
4623         STAGE_CREATE(MLX5_IB_STAGE_INIT,
4624                      mlx5_ib_stage_init_init,
4625                      mlx5_ib_stage_init_cleanup),
4626         STAGE_CREATE(MLX5_IB_STAGE_FS,
4627                      mlx5_ib_fs_init,
4628                      mlx5_ib_fs_cleanup),
4629         STAGE_CREATE(MLX5_IB_STAGE_CAPS,
4630                      mlx5_ib_stage_caps_init,
4631                      mlx5_ib_stage_caps_cleanup),
4632         STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
4633                      mlx5_ib_stage_non_default_cb,
4634                      NULL),
4635         STAGE_CREATE(MLX5_IB_STAGE_ROCE,
4636                      mlx5_ib_roce_init,
4637                      mlx5_ib_roce_cleanup),
4638         STAGE_CREATE(MLX5_IB_STAGE_QP,
4639                      mlx5_init_qp_table,
4640                      mlx5_cleanup_qp_table),
4641         STAGE_CREATE(MLX5_IB_STAGE_SRQ,
4642                      mlx5_init_srq_table,
4643                      mlx5_cleanup_srq_table),
4644         STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES,
4645                      mlx5_ib_dev_res_init,
4646                      mlx5_ib_dev_res_cleanup),
4647         STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER,
4648                      mlx5_ib_stage_dev_notifier_init,
4649                      mlx5_ib_stage_dev_notifier_cleanup),
4650         STAGE_CREATE(MLX5_IB_STAGE_ODP,
4651                      mlx5_ib_odp_init_one,
4652                      mlx5_ib_odp_cleanup_one),
4653         STAGE_CREATE(MLX5_IB_STAGE_COUNTERS,
4654                      mlx5_ib_counters_init,
4655                      mlx5_ib_counters_cleanup),
4656         STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS,
4657                      mlx5_ib_stage_cong_debugfs_init,
4658                      mlx5_ib_stage_cong_debugfs_cleanup),
4659         STAGE_CREATE(MLX5_IB_STAGE_UAR,
4660                      mlx5_ib_stage_uar_init,
4661                      mlx5_ib_stage_uar_cleanup),
4662         STAGE_CREATE(MLX5_IB_STAGE_BFREG,
4663                      mlx5_ib_stage_bfrag_init,
4664                      mlx5_ib_stage_bfrag_cleanup),
4665         STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
4666                      NULL,
4667                      mlx5_ib_stage_pre_ib_reg_umr_cleanup),
4668         STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID,
4669                      mlx5_ib_devx_init,
4670                      mlx5_ib_devx_cleanup),
4671         STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
4672                      mlx5_ib_stage_ib_reg_init,
4673                      mlx5_ib_stage_ib_reg_cleanup),
4674         STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR,
4675                      mlx5_ib_stage_post_ib_reg_umr_init,
4676                      NULL),
4677         STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP,
4678                      mlx5_ib_stage_delay_drop_init,
4679                      mlx5_ib_stage_delay_drop_cleanup),
4680         STAGE_CREATE(MLX5_IB_STAGE_RESTRACK,
4681                      mlx5_ib_restrack_init,
4682                      NULL),
4683 };
4684
4685 const struct mlx5_ib_profile raw_eth_profile = {
4686         STAGE_CREATE(MLX5_IB_STAGE_INIT,
4687                      mlx5_ib_stage_init_init,
4688                      mlx5_ib_stage_init_cleanup),
4689         STAGE_CREATE(MLX5_IB_STAGE_FS,
4690                      mlx5_ib_fs_init,
4691                      mlx5_ib_fs_cleanup),
4692         STAGE_CREATE(MLX5_IB_STAGE_CAPS,
4693                      mlx5_ib_stage_caps_init,
4694                      mlx5_ib_stage_caps_cleanup),
4695         STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
4696                      mlx5_ib_stage_raw_eth_non_default_cb,
4697                      NULL),
4698         STAGE_CREATE(MLX5_IB_STAGE_ROCE,
4699                      mlx5_ib_roce_init,
4700                      mlx5_ib_roce_cleanup),
4701         STAGE_CREATE(MLX5_IB_STAGE_QP,
4702                      mlx5_init_qp_table,
4703                      mlx5_cleanup_qp_table),
4704         STAGE_CREATE(MLX5_IB_STAGE_SRQ,
4705                      mlx5_init_srq_table,
4706                      mlx5_cleanup_srq_table),
4707         STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES,
4708                      mlx5_ib_dev_res_init,
4709                      mlx5_ib_dev_res_cleanup),
4710         STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER,
4711                      mlx5_ib_stage_dev_notifier_init,
4712                      mlx5_ib_stage_dev_notifier_cleanup),
4713         STAGE_CREATE(MLX5_IB_STAGE_COUNTERS,
4714                      mlx5_ib_counters_init,
4715                      mlx5_ib_counters_cleanup),
4716         STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS,
4717                      mlx5_ib_stage_cong_debugfs_init,
4718                      mlx5_ib_stage_cong_debugfs_cleanup),
4719         STAGE_CREATE(MLX5_IB_STAGE_UAR,
4720                      mlx5_ib_stage_uar_init,
4721                      mlx5_ib_stage_uar_cleanup),
4722         STAGE_CREATE(MLX5_IB_STAGE_BFREG,
4723                      mlx5_ib_stage_bfrag_init,
4724                      mlx5_ib_stage_bfrag_cleanup),
4725         STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
4726                      NULL,
4727                      mlx5_ib_stage_pre_ib_reg_umr_cleanup),
4728         STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID,
4729                      mlx5_ib_devx_init,
4730                      mlx5_ib_devx_cleanup),
4731         STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
4732                      mlx5_ib_stage_ib_reg_init,
4733                      mlx5_ib_stage_ib_reg_cleanup),
4734         STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR,
4735                      mlx5_ib_stage_post_ib_reg_umr_init,
4736                      NULL),
4737         STAGE_CREATE(MLX5_IB_STAGE_RESTRACK,
4738                      mlx5_ib_restrack_init,
4739                      NULL),
4740 };
4741
4742 static void *mlx5_ib_add_slave_port(struct mlx5_core_dev *mdev)
4743 {
4744         struct mlx5_ib_multiport_info *mpi;
4745         struct mlx5_ib_dev *dev;
4746         bool bound = false;
4747         int err;
4748
4749         mpi = kzalloc(sizeof(*mpi), GFP_KERNEL);
4750         if (!mpi)
4751                 return NULL;
4752
4753         mpi->mdev = mdev;
4754
4755         err = mlx5_query_nic_vport_system_image_guid(mdev,
4756                                                      &mpi->sys_image_guid);
4757         if (err) {
4758                 kfree(mpi);
4759                 return NULL;
4760         }
4761
4762         mutex_lock(&mlx5_ib_multiport_mutex);
4763         list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) {
4764                 if (dev->sys_image_guid == mpi->sys_image_guid)
4765                         bound = mlx5_ib_bind_slave_port(dev, mpi);
4766
4767                 if (bound) {
4768                         rdma_roce_rescan_device(&dev->ib_dev);
4769                         break;
4770                 }
4771         }
4772
4773         if (!bound) {
4774                 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list);
4775                 dev_dbg(mdev->device,
4776                         "no suitable IB device found to bind to, added to unaffiliated list.\n");
4777         }
4778         mutex_unlock(&mlx5_ib_multiport_mutex);
4779
4780         return mpi;
4781 }
4782
4783 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
4784 {
4785         const struct mlx5_ib_profile *profile;
4786         enum rdma_link_layer ll;
4787         struct mlx5_ib_dev *dev;
4788         int port_type_cap;
4789         int num_ports;
4790
4791         if (MLX5_ESWITCH_MANAGER(mdev) &&
4792             mlx5_ib_eswitch_mode(mdev->priv.eswitch) == MLX5_ESWITCH_OFFLOADS) {
4793                 if (!mlx5_core_mp_enabled(mdev))
4794                         mlx5_ib_register_vport_reps(mdev);
4795                 return mdev;
4796         }
4797
4798         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
4799         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
4800
4801         if (mlx5_core_is_mp_slave(mdev) && ll == IB_LINK_LAYER_ETHERNET)
4802                 return mlx5_ib_add_slave_port(mdev);
4803
4804         num_ports = max(MLX5_CAP_GEN(mdev, num_ports),
4805                         MLX5_CAP_GEN(mdev, num_vhca_ports));
4806         dev = ib_alloc_device(mlx5_ib_dev, ib_dev);
4807         if (!dev)
4808                 return NULL;
4809         dev->port = kcalloc(num_ports, sizeof(*dev->port),
4810                              GFP_KERNEL);
4811         if (!dev->port) {
4812                 ib_dealloc_device(&dev->ib_dev);
4813                 return NULL;
4814         }
4815
4816         dev->mdev = mdev;
4817         dev->num_ports = num_ports;
4818
4819         if (ll == IB_LINK_LAYER_ETHERNET && !mlx5_is_roce_enabled(mdev))
4820                 profile = &raw_eth_profile;
4821         else
4822                 profile = &pf_profile;
4823
4824         return __mlx5_ib_add(dev, profile);
4825 }
4826
4827 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
4828 {
4829         struct mlx5_ib_multiport_info *mpi;
4830         struct mlx5_ib_dev *dev;
4831
4832         if (MLX5_ESWITCH_MANAGER(mdev) && context == mdev) {
4833                 mlx5_ib_unregister_vport_reps(mdev);
4834                 return;
4835         }
4836
4837         if (mlx5_core_is_mp_slave(mdev)) {
4838                 mpi = context;
4839                 mutex_lock(&mlx5_ib_multiport_mutex);
4840                 if (mpi->ibdev)
4841                         mlx5_ib_unbind_slave_port(mpi->ibdev, mpi);
4842                 list_del(&mpi->list);
4843                 mutex_unlock(&mlx5_ib_multiport_mutex);
4844                 kfree(mpi);
4845                 return;
4846         }
4847
4848         dev = context;
4849         __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
4850 }
4851
4852 static struct mlx5_interface mlx5_ib_interface = {
4853         .add            = mlx5_ib_add,
4854         .remove         = mlx5_ib_remove,
4855         .protocol       = MLX5_INTERFACE_PROTOCOL_IB,
4856 };
4857
4858 unsigned long mlx5_ib_get_xlt_emergency_page(void)
4859 {
4860         mutex_lock(&xlt_emergency_page_mutex);
4861         return xlt_emergency_page;
4862 }
4863
4864 void mlx5_ib_put_xlt_emergency_page(void)
4865 {
4866         mutex_unlock(&xlt_emergency_page_mutex);
4867 }
4868
4869 static int __init mlx5_ib_init(void)
4870 {
4871         int err;
4872
4873         xlt_emergency_page = __get_free_page(GFP_KERNEL);
4874         if (!xlt_emergency_page)
4875                 return -ENOMEM;
4876
4877         mutex_init(&xlt_emergency_page_mutex);
4878
4879         mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0);
4880         if (!mlx5_ib_event_wq) {
4881                 free_page(xlt_emergency_page);
4882                 return -ENOMEM;
4883         }
4884
4885         mlx5_ib_odp_init();
4886
4887         err = mlx5_register_interface(&mlx5_ib_interface);
4888
4889         return err;
4890 }
4891
4892 static void __exit mlx5_ib_cleanup(void)
4893 {
4894         mlx5_unregister_interface(&mlx5_ib_interface);
4895         destroy_workqueue(mlx5_ib_event_wq);
4896         mutex_destroy(&xlt_emergency_page_mutex);
4897         free_page(xlt_emergency_page);
4898 }
4899
4900 module_init(mlx5_ib_init);
4901 module_exit(mlx5_ib_cleanup);