1 /* 2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/highmem.h> 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/errno.h> 37 #include <linux/pci.h> 38 #include <linux/dma-mapping.h> 39 #include <linux/slab.h> 40 #if defined(CONFIG_X86) 41 #include <asm/pat.h> 42 #endif 43 #include <linux/sched.h> 44 #include <linux/delay.h> 45 #include <rdma/ib_user_verbs.h> 46 #include <rdma/ib_addr.h> 47 #include <rdma/ib_cache.h> 48 #include <linux/mlx5/port.h> 49 #include <linux/mlx5/vport.h> 50 #include <linux/list.h> 51 #include <rdma/ib_smi.h> 52 #include <rdma/ib_umem.h> 53 #include <linux/in.h> 54 #include <linux/etherdevice.h> 55 #include <linux/mlx5/fs.h> 56 #include "user.h" 57 #include "mlx5_ib.h" 58 59 #define DRIVER_NAME "mlx5_ib" 60 #define DRIVER_VERSION "2.2-1" 61 #define DRIVER_RELDATE "Feb 2014" 62 63 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>"); 64 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver"); 65 MODULE_LICENSE("Dual BSD/GPL"); 66 MODULE_VERSION(DRIVER_VERSION); 67 68 static int deprecated_prof_sel = 2; 69 module_param_named(prof_sel, deprecated_prof_sel, int, 0444); 70 MODULE_PARM_DESC(prof_sel, "profile selector. Deprecated here. Moved to module mlx5_core"); 71 72 static char mlx5_version[] = 73 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v" 74 DRIVER_VERSION " (" DRIVER_RELDATE ")\n"; 75 76 enum { 77 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3, 78 }; 79 80 static enum rdma_link_layer 81 mlx5_port_type_cap_to_rdma_ll(int port_type_cap) 82 { 83 switch (port_type_cap) { 84 case MLX5_CAP_PORT_TYPE_IB: 85 return IB_LINK_LAYER_INFINIBAND; 86 case MLX5_CAP_PORT_TYPE_ETH: 87 return IB_LINK_LAYER_ETHERNET; 88 default: 89 return IB_LINK_LAYER_UNSPECIFIED; 90 } 91 } 92 93 static enum rdma_link_layer 94 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num) 95 { 96 struct mlx5_ib_dev *dev = to_mdev(device); 97 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type); 98 99 return mlx5_port_type_cap_to_rdma_ll(port_type_cap); 100 } 101 102 static int mlx5_netdev_event(struct notifier_block *this, 103 unsigned long event, void *ptr) 104 { 105 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 106 struct mlx5_ib_dev *ibdev = container_of(this, struct mlx5_ib_dev, 107 roce.nb); 108 109 if ((event != NETDEV_UNREGISTER) && (event != NETDEV_REGISTER)) 110 return NOTIFY_DONE; 111 112 write_lock(&ibdev->roce.netdev_lock); 113 if (ndev->dev.parent == &ibdev->mdev->pdev->dev) 114 ibdev->roce.netdev = (event == NETDEV_UNREGISTER) ? NULL : ndev; 115 write_unlock(&ibdev->roce.netdev_lock); 116 117 return NOTIFY_DONE; 118 } 119 120 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device, 121 u8 port_num) 122 { 123 struct mlx5_ib_dev *ibdev = to_mdev(device); 124 struct net_device *ndev; 125 126 /* Ensure ndev does not disappear before we invoke dev_hold() 127 */ 128 read_lock(&ibdev->roce.netdev_lock); 129 ndev = ibdev->roce.netdev; 130 if (ndev) 131 dev_hold(ndev); 132 read_unlock(&ibdev->roce.netdev_lock); 133 134 return ndev; 135 } 136 137 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num, 138 struct ib_port_attr *props) 139 { 140 struct mlx5_ib_dev *dev = to_mdev(device); 141 struct net_device *ndev; 142 enum ib_mtu ndev_ib_mtu; 143 u16 qkey_viol_cntr; 144 145 memset(props, 0, sizeof(*props)); 146 147 props->port_cap_flags |= IB_PORT_CM_SUP; 148 props->port_cap_flags |= IB_PORT_IP_BASED_GIDS; 149 150 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev, 151 roce_address_table_size); 152 props->max_mtu = IB_MTU_4096; 153 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg); 154 props->pkey_tbl_len = 1; 155 props->state = IB_PORT_DOWN; 156 props->phys_state = 3; 157 158 mlx5_query_nic_vport_qkey_viol_cntr(dev->mdev, &qkey_viol_cntr); 159 props->qkey_viol_cntr = qkey_viol_cntr; 160 161 ndev = mlx5_ib_get_netdev(device, port_num); 162 if (!ndev) 163 return 0; 164 165 if (netif_running(ndev) && netif_carrier_ok(ndev)) { 166 props->state = IB_PORT_ACTIVE; 167 props->phys_state = 5; 168 } 169 170 ndev_ib_mtu = iboe_get_mtu(ndev->mtu); 171 172 dev_put(ndev); 173 174 props->active_mtu = min(props->max_mtu, ndev_ib_mtu); 175 176 props->active_width = IB_WIDTH_4X; /* TODO */ 177 props->active_speed = IB_SPEED_QDR; /* TODO */ 178 179 return 0; 180 } 181 182 static void ib_gid_to_mlx5_roce_addr(const union ib_gid *gid, 183 const struct ib_gid_attr *attr, 184 void *mlx5_addr) 185 { 186 #define MLX5_SET_RA(p, f, v) MLX5_SET(roce_addr_layout, p, f, v) 187 char *mlx5_addr_l3_addr = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr, 188 source_l3_address); 189 void *mlx5_addr_mac = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr, 190 source_mac_47_32); 191 192 if (!gid) 193 return; 194 195 ether_addr_copy(mlx5_addr_mac, attr->ndev->dev_addr); 196 197 if (is_vlan_dev(attr->ndev)) { 198 MLX5_SET_RA(mlx5_addr, vlan_valid, 1); 199 MLX5_SET_RA(mlx5_addr, vlan_id, vlan_dev_vlan_id(attr->ndev)); 200 } 201 202 switch (attr->gid_type) { 203 case IB_GID_TYPE_IB: 204 MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_1); 205 break; 206 case IB_GID_TYPE_ROCE_UDP_ENCAP: 207 MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_2); 208 break; 209 210 default: 211 WARN_ON(true); 212 } 213 214 if (attr->gid_type != IB_GID_TYPE_IB) { 215 if (ipv6_addr_v4mapped((void *)gid)) 216 MLX5_SET_RA(mlx5_addr, roce_l3_type, 217 MLX5_ROCE_L3_TYPE_IPV4); 218 else 219 MLX5_SET_RA(mlx5_addr, roce_l3_type, 220 MLX5_ROCE_L3_TYPE_IPV6); 221 } 222 223 if ((attr->gid_type == IB_GID_TYPE_IB) || 224 !ipv6_addr_v4mapped((void *)gid)) 225 memcpy(mlx5_addr_l3_addr, gid, sizeof(*gid)); 226 else 227 memcpy(&mlx5_addr_l3_addr[12], &gid->raw[12], 4); 228 } 229 230 static int set_roce_addr(struct ib_device *device, u8 port_num, 231 unsigned int index, 232 const union ib_gid *gid, 233 const struct ib_gid_attr *attr) 234 { 235 struct mlx5_ib_dev *dev = to_mdev(device); 236 u32 in[MLX5_ST_SZ_DW(set_roce_address_in)]; 237 u32 out[MLX5_ST_SZ_DW(set_roce_address_out)]; 238 void *in_addr = MLX5_ADDR_OF(set_roce_address_in, in, roce_address); 239 enum rdma_link_layer ll = mlx5_ib_port_link_layer(device, port_num); 240 241 if (ll != IB_LINK_LAYER_ETHERNET) 242 return -EINVAL; 243 244 memset(in, 0, sizeof(in)); 245 246 ib_gid_to_mlx5_roce_addr(gid, attr, in_addr); 247 248 MLX5_SET(set_roce_address_in, in, roce_address_index, index); 249 MLX5_SET(set_roce_address_in, in, opcode, MLX5_CMD_OP_SET_ROCE_ADDRESS); 250 251 memset(out, 0, sizeof(out)); 252 return mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); 253 } 254 255 static int mlx5_ib_add_gid(struct ib_device *device, u8 port_num, 256 unsigned int index, const union ib_gid *gid, 257 const struct ib_gid_attr *attr, 258 __always_unused void **context) 259 { 260 return set_roce_addr(device, port_num, index, gid, attr); 261 } 262 263 static int mlx5_ib_del_gid(struct ib_device *device, u8 port_num, 264 unsigned int index, __always_unused void **context) 265 { 266 return set_roce_addr(device, port_num, index, NULL, NULL); 267 } 268 269 __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num, 270 int index) 271 { 272 struct ib_gid_attr attr; 273 union ib_gid gid; 274 275 if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr)) 276 return 0; 277 278 if (!attr.ndev) 279 return 0; 280 281 dev_put(attr.ndev); 282 283 if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) 284 return 0; 285 286 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port)); 287 } 288 289 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev) 290 { 291 return !MLX5_CAP_GEN(dev->mdev, ib_virt); 292 } 293 294 enum { 295 MLX5_VPORT_ACCESS_METHOD_MAD, 296 MLX5_VPORT_ACCESS_METHOD_HCA, 297 MLX5_VPORT_ACCESS_METHOD_NIC, 298 }; 299 300 static int mlx5_get_vport_access_method(struct ib_device *ibdev) 301 { 302 if (mlx5_use_mad_ifc(to_mdev(ibdev))) 303 return MLX5_VPORT_ACCESS_METHOD_MAD; 304 305 if (mlx5_ib_port_link_layer(ibdev, 1) == 306 IB_LINK_LAYER_ETHERNET) 307 return MLX5_VPORT_ACCESS_METHOD_NIC; 308 309 return MLX5_VPORT_ACCESS_METHOD_HCA; 310 } 311 312 static void get_atomic_caps(struct mlx5_ib_dev *dev, 313 struct ib_device_attr *props) 314 { 315 u8 tmp; 316 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations); 317 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp); 318 u8 atomic_req_8B_endianness_mode = 319 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianess_mode); 320 321 /* Check if HW supports 8 bytes standard atomic operations and capable 322 * of host endianness respond 323 */ 324 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD; 325 if (((atomic_operations & tmp) == tmp) && 326 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) && 327 (atomic_req_8B_endianness_mode)) { 328 props->atomic_cap = IB_ATOMIC_HCA; 329 } else { 330 props->atomic_cap = IB_ATOMIC_NONE; 331 } 332 } 333 334 static int mlx5_query_system_image_guid(struct ib_device *ibdev, 335 __be64 *sys_image_guid) 336 { 337 struct mlx5_ib_dev *dev = to_mdev(ibdev); 338 struct mlx5_core_dev *mdev = dev->mdev; 339 u64 tmp; 340 int err; 341 342 switch (mlx5_get_vport_access_method(ibdev)) { 343 case MLX5_VPORT_ACCESS_METHOD_MAD: 344 return mlx5_query_mad_ifc_system_image_guid(ibdev, 345 sys_image_guid); 346 347 case MLX5_VPORT_ACCESS_METHOD_HCA: 348 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp); 349 break; 350 351 case MLX5_VPORT_ACCESS_METHOD_NIC: 352 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp); 353 break; 354 355 default: 356 return -EINVAL; 357 } 358 359 if (!err) 360 *sys_image_guid = cpu_to_be64(tmp); 361 362 return err; 363 364 } 365 366 static int mlx5_query_max_pkeys(struct ib_device *ibdev, 367 u16 *max_pkeys) 368 { 369 struct mlx5_ib_dev *dev = to_mdev(ibdev); 370 struct mlx5_core_dev *mdev = dev->mdev; 371 372 switch (mlx5_get_vport_access_method(ibdev)) { 373 case MLX5_VPORT_ACCESS_METHOD_MAD: 374 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys); 375 376 case MLX5_VPORT_ACCESS_METHOD_HCA: 377 case MLX5_VPORT_ACCESS_METHOD_NIC: 378 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, 379 pkey_table_size)); 380 return 0; 381 382 default: 383 return -EINVAL; 384 } 385 } 386 387 static int mlx5_query_vendor_id(struct ib_device *ibdev, 388 u32 *vendor_id) 389 { 390 struct mlx5_ib_dev *dev = to_mdev(ibdev); 391 392 switch (mlx5_get_vport_access_method(ibdev)) { 393 case MLX5_VPORT_ACCESS_METHOD_MAD: 394 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id); 395 396 case MLX5_VPORT_ACCESS_METHOD_HCA: 397 case MLX5_VPORT_ACCESS_METHOD_NIC: 398 return mlx5_core_query_vendor_id(dev->mdev, vendor_id); 399 400 default: 401 return -EINVAL; 402 } 403 } 404 405 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev, 406 __be64 *node_guid) 407 { 408 u64 tmp; 409 int err; 410 411 switch (mlx5_get_vport_access_method(&dev->ib_dev)) { 412 case MLX5_VPORT_ACCESS_METHOD_MAD: 413 return mlx5_query_mad_ifc_node_guid(dev, node_guid); 414 415 case MLX5_VPORT_ACCESS_METHOD_HCA: 416 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp); 417 break; 418 419 case MLX5_VPORT_ACCESS_METHOD_NIC: 420 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp); 421 break; 422 423 default: 424 return -EINVAL; 425 } 426 427 if (!err) 428 *node_guid = cpu_to_be64(tmp); 429 430 return err; 431 } 432 433 struct mlx5_reg_node_desc { 434 u8 desc[64]; 435 }; 436 437 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 438 { 439 struct mlx5_reg_node_desc in; 440 441 if (mlx5_use_mad_ifc(dev)) 442 return mlx5_query_mad_ifc_node_desc(dev, node_desc); 443 444 memset(&in, 0, sizeof(in)); 445 446 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc, 447 sizeof(struct mlx5_reg_node_desc), 448 MLX5_REG_NODE_DESC, 0, 0); 449 } 450 451 static int mlx5_ib_query_device(struct ib_device *ibdev, 452 struct ib_device_attr *props, 453 struct ib_udata *uhw) 454 { 455 struct mlx5_ib_dev *dev = to_mdev(ibdev); 456 struct mlx5_core_dev *mdev = dev->mdev; 457 int err = -ENOMEM; 458 int max_rq_sg; 459 int max_sq_sg; 460 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz); 461 struct mlx5_ib_query_device_resp resp = {}; 462 size_t resp_len; 463 u64 max_tso; 464 465 resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length); 466 if (uhw->outlen && uhw->outlen < resp_len) 467 return -EINVAL; 468 else 469 resp.response_length = resp_len; 470 471 if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen)) 472 return -EINVAL; 473 474 memset(props, 0, sizeof(*props)); 475 err = mlx5_query_system_image_guid(ibdev, 476 &props->sys_image_guid); 477 if (err) 478 return err; 479 480 err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys); 481 if (err) 482 return err; 483 484 err = mlx5_query_vendor_id(ibdev, &props->vendor_id); 485 if (err) 486 return err; 487 488 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) | 489 (fw_rev_min(dev->mdev) << 16) | 490 fw_rev_sub(dev->mdev); 491 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 492 IB_DEVICE_PORT_ACTIVE_EVENT | 493 IB_DEVICE_SYS_IMAGE_GUID | 494 IB_DEVICE_RC_RNR_NAK_GEN; 495 496 if (MLX5_CAP_GEN(mdev, pkv)) 497 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 498 if (MLX5_CAP_GEN(mdev, qkv)) 499 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 500 if (MLX5_CAP_GEN(mdev, apm)) 501 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 502 if (MLX5_CAP_GEN(mdev, xrc)) 503 props->device_cap_flags |= IB_DEVICE_XRC; 504 if (MLX5_CAP_GEN(mdev, imaicl)) { 505 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW | 506 IB_DEVICE_MEM_WINDOW_TYPE_2B; 507 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 508 /* We support 'Gappy' memory registration too */ 509 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG; 510 } 511 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 512 if (MLX5_CAP_GEN(mdev, sho)) { 513 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER; 514 /* At this stage no support for signature handover */ 515 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 | 516 IB_PROT_T10DIF_TYPE_2 | 517 IB_PROT_T10DIF_TYPE_3; 518 props->sig_guard_cap = IB_GUARD_T10DIF_CRC | 519 IB_GUARD_T10DIF_CSUM; 520 } 521 if (MLX5_CAP_GEN(mdev, block_lb_mc)) 522 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 523 524 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) { 525 if (MLX5_CAP_ETH(mdev, csum_cap)) 526 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 527 528 if (field_avail(typeof(resp), tso_caps, uhw->outlen)) { 529 max_tso = MLX5_CAP_ETH(mdev, max_lso_cap); 530 if (max_tso) { 531 resp.tso_caps.max_tso = 1 << max_tso; 532 resp.tso_caps.supported_qpts |= 533 1 << IB_QPT_RAW_PACKET; 534 resp.response_length += sizeof(resp.tso_caps); 535 } 536 } 537 } 538 539 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) { 540 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 541 props->device_cap_flags |= IB_DEVICE_UD_TSO; 542 } 543 544 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && 545 MLX5_CAP_ETH(dev->mdev, scatter_fcs)) 546 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS; 547 548 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) 549 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 550 551 props->vendor_part_id = mdev->pdev->device; 552 props->hw_ver = mdev->pdev->revision; 553 554 props->max_mr_size = ~0ull; 555 props->page_size_cap = ~(min_page_size - 1); 556 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp); 557 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 558 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) / 559 sizeof(struct mlx5_wqe_data_seg); 560 max_sq_sg = (MLX5_CAP_GEN(mdev, max_wqe_sz_sq) - 561 sizeof(struct mlx5_wqe_ctrl_seg)) / 562 sizeof(struct mlx5_wqe_data_seg); 563 props->max_sge = min(max_rq_sg, max_sq_sg); 564 props->max_sge_rd = MLX5_MAX_SGE_RD; 565 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq); 566 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1; 567 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 568 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd); 569 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp); 570 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp); 571 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq); 572 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1; 573 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay); 574 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 575 props->max_srq_sge = max_rq_sg - 1; 576 props->max_fast_reg_page_list_len = 577 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size); 578 get_atomic_caps(dev, props); 579 props->masked_atomic_cap = IB_ATOMIC_NONE; 580 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg); 581 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg); 582 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 583 props->max_mcast_grp; 584 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */ 585 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz); 586 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL; 587 588 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 589 if (MLX5_CAP_GEN(mdev, pg)) 590 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING; 591 props->odp_caps = dev->odp_caps; 592 #endif 593 594 if (MLX5_CAP_GEN(mdev, cd)) 595 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL; 596 597 if (!mlx5_core_is_pf(mdev)) 598 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION; 599 600 if (uhw->outlen) { 601 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 602 603 if (err) 604 return err; 605 } 606 607 return 0; 608 } 609 610 enum mlx5_ib_width { 611 MLX5_IB_WIDTH_1X = 1 << 0, 612 MLX5_IB_WIDTH_2X = 1 << 1, 613 MLX5_IB_WIDTH_4X = 1 << 2, 614 MLX5_IB_WIDTH_8X = 1 << 3, 615 MLX5_IB_WIDTH_12X = 1 << 4 616 }; 617 618 static int translate_active_width(struct ib_device *ibdev, u8 active_width, 619 u8 *ib_width) 620 { 621 struct mlx5_ib_dev *dev = to_mdev(ibdev); 622 int err = 0; 623 624 if (active_width & MLX5_IB_WIDTH_1X) { 625 *ib_width = IB_WIDTH_1X; 626 } else if (active_width & MLX5_IB_WIDTH_2X) { 627 mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n", 628 (int)active_width); 629 err = -EINVAL; 630 } else if (active_width & MLX5_IB_WIDTH_4X) { 631 *ib_width = IB_WIDTH_4X; 632 } else if (active_width & MLX5_IB_WIDTH_8X) { 633 *ib_width = IB_WIDTH_8X; 634 } else if (active_width & MLX5_IB_WIDTH_12X) { 635 *ib_width = IB_WIDTH_12X; 636 } else { 637 mlx5_ib_dbg(dev, "Invalid active_width %d\n", 638 (int)active_width); 639 err = -EINVAL; 640 } 641 642 return err; 643 } 644 645 static int mlx5_mtu_to_ib_mtu(int mtu) 646 { 647 switch (mtu) { 648 case 256: return 1; 649 case 512: return 2; 650 case 1024: return 3; 651 case 2048: return 4; 652 case 4096: return 5; 653 default: 654 pr_warn("invalid mtu\n"); 655 return -1; 656 } 657 } 658 659 enum ib_max_vl_num { 660 __IB_MAX_VL_0 = 1, 661 __IB_MAX_VL_0_1 = 2, 662 __IB_MAX_VL_0_3 = 3, 663 __IB_MAX_VL_0_7 = 4, 664 __IB_MAX_VL_0_14 = 5, 665 }; 666 667 enum mlx5_vl_hw_cap { 668 MLX5_VL_HW_0 = 1, 669 MLX5_VL_HW_0_1 = 2, 670 MLX5_VL_HW_0_2 = 3, 671 MLX5_VL_HW_0_3 = 4, 672 MLX5_VL_HW_0_4 = 5, 673 MLX5_VL_HW_0_5 = 6, 674 MLX5_VL_HW_0_6 = 7, 675 MLX5_VL_HW_0_7 = 8, 676 MLX5_VL_HW_0_14 = 15 677 }; 678 679 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap, 680 u8 *max_vl_num) 681 { 682 switch (vl_hw_cap) { 683 case MLX5_VL_HW_0: 684 *max_vl_num = __IB_MAX_VL_0; 685 break; 686 case MLX5_VL_HW_0_1: 687 *max_vl_num = __IB_MAX_VL_0_1; 688 break; 689 case MLX5_VL_HW_0_3: 690 *max_vl_num = __IB_MAX_VL_0_3; 691 break; 692 case MLX5_VL_HW_0_7: 693 *max_vl_num = __IB_MAX_VL_0_7; 694 break; 695 case MLX5_VL_HW_0_14: 696 *max_vl_num = __IB_MAX_VL_0_14; 697 break; 698 699 default: 700 return -EINVAL; 701 } 702 703 return 0; 704 } 705 706 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port, 707 struct ib_port_attr *props) 708 { 709 struct mlx5_ib_dev *dev = to_mdev(ibdev); 710 struct mlx5_core_dev *mdev = dev->mdev; 711 struct mlx5_hca_vport_context *rep; 712 u16 max_mtu; 713 u16 oper_mtu; 714 int err; 715 u8 ib_link_width_oper; 716 u8 vl_hw_cap; 717 718 rep = kzalloc(sizeof(*rep), GFP_KERNEL); 719 if (!rep) { 720 err = -ENOMEM; 721 goto out; 722 } 723 724 memset(props, 0, sizeof(*props)); 725 726 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep); 727 if (err) 728 goto out; 729 730 props->lid = rep->lid; 731 props->lmc = rep->lmc; 732 props->sm_lid = rep->sm_lid; 733 props->sm_sl = rep->sm_sl; 734 props->state = rep->vport_state; 735 props->phys_state = rep->port_physical_state; 736 props->port_cap_flags = rep->cap_mask1; 737 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size)); 738 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 739 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size)); 740 props->bad_pkey_cntr = rep->pkey_violation_counter; 741 props->qkey_viol_cntr = rep->qkey_violation_counter; 742 props->subnet_timeout = rep->subnet_timeout; 743 props->init_type_reply = rep->init_type_reply; 744 props->grh_required = rep->grh_required; 745 746 err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port); 747 if (err) 748 goto out; 749 750 err = translate_active_width(ibdev, ib_link_width_oper, 751 &props->active_width); 752 if (err) 753 goto out; 754 err = mlx5_query_port_proto_oper(mdev, &props->active_speed, MLX5_PTYS_IB, 755 port); 756 if (err) 757 goto out; 758 759 mlx5_query_port_max_mtu(mdev, &max_mtu, port); 760 761 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu); 762 763 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port); 764 765 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu); 766 767 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port); 768 if (err) 769 goto out; 770 771 err = translate_max_vl_num(ibdev, vl_hw_cap, 772 &props->max_vl_num); 773 out: 774 kfree(rep); 775 return err; 776 } 777 778 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port, 779 struct ib_port_attr *props) 780 { 781 switch (mlx5_get_vport_access_method(ibdev)) { 782 case MLX5_VPORT_ACCESS_METHOD_MAD: 783 return mlx5_query_mad_ifc_port(ibdev, port, props); 784 785 case MLX5_VPORT_ACCESS_METHOD_HCA: 786 return mlx5_query_hca_port(ibdev, port, props); 787 788 case MLX5_VPORT_ACCESS_METHOD_NIC: 789 return mlx5_query_port_roce(ibdev, port, props); 790 791 default: 792 return -EINVAL; 793 } 794 } 795 796 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 797 union ib_gid *gid) 798 { 799 struct mlx5_ib_dev *dev = to_mdev(ibdev); 800 struct mlx5_core_dev *mdev = dev->mdev; 801 802 switch (mlx5_get_vport_access_method(ibdev)) { 803 case MLX5_VPORT_ACCESS_METHOD_MAD: 804 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid); 805 806 case MLX5_VPORT_ACCESS_METHOD_HCA: 807 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid); 808 809 default: 810 return -EINVAL; 811 } 812 813 } 814 815 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 816 u16 *pkey) 817 { 818 struct mlx5_ib_dev *dev = to_mdev(ibdev); 819 struct mlx5_core_dev *mdev = dev->mdev; 820 821 switch (mlx5_get_vport_access_method(ibdev)) { 822 case MLX5_VPORT_ACCESS_METHOD_MAD: 823 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey); 824 825 case MLX5_VPORT_ACCESS_METHOD_HCA: 826 case MLX5_VPORT_ACCESS_METHOD_NIC: 827 return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index, 828 pkey); 829 default: 830 return -EINVAL; 831 } 832 } 833 834 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 835 struct ib_device_modify *props) 836 { 837 struct mlx5_ib_dev *dev = to_mdev(ibdev); 838 struct mlx5_reg_node_desc in; 839 struct mlx5_reg_node_desc out; 840 int err; 841 842 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 843 return -EOPNOTSUPP; 844 845 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 846 return 0; 847 848 /* 849 * If possible, pass node desc to FW, so it can generate 850 * a 144 trap. If cmd fails, just ignore. 851 */ 852 memcpy(&in, props->node_desc, 64); 853 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, 854 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 855 if (err) 856 return err; 857 858 memcpy(ibdev->node_desc, props->node_desc, 64); 859 860 return err; 861 } 862 863 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 864 struct ib_port_modify *props) 865 { 866 struct mlx5_ib_dev *dev = to_mdev(ibdev); 867 struct ib_port_attr attr; 868 u32 tmp; 869 int err; 870 871 mutex_lock(&dev->cap_mask_mutex); 872 873 err = mlx5_ib_query_port(ibdev, port, &attr); 874 if (err) 875 goto out; 876 877 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 878 ~props->clr_port_cap_mask; 879 880 err = mlx5_set_port_caps(dev->mdev, port, tmp); 881 882 out: 883 mutex_unlock(&dev->cap_mask_mutex); 884 return err; 885 } 886 887 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, 888 struct ib_udata *udata) 889 { 890 struct mlx5_ib_dev *dev = to_mdev(ibdev); 891 struct mlx5_ib_alloc_ucontext_req_v2 req = {}; 892 struct mlx5_ib_alloc_ucontext_resp resp = {}; 893 struct mlx5_ib_ucontext *context; 894 struct mlx5_uuar_info *uuari; 895 struct mlx5_uar *uars; 896 int gross_uuars; 897 int num_uars; 898 int ver; 899 int uuarn; 900 int err; 901 int i; 902 size_t reqlen; 903 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2, 904 max_cqe_version); 905 906 if (!dev->ib_active) 907 return ERR_PTR(-EAGAIN); 908 909 if (udata->inlen < sizeof(struct ib_uverbs_cmd_hdr)) 910 return ERR_PTR(-EINVAL); 911 912 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr); 913 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) 914 ver = 0; 915 else if (reqlen >= min_req_v2) 916 ver = 2; 917 else 918 return ERR_PTR(-EINVAL); 919 920 err = ib_copy_from_udata(&req, udata, min(reqlen, sizeof(req))); 921 if (err) 922 return ERR_PTR(err); 923 924 if (req.flags) 925 return ERR_PTR(-EINVAL); 926 927 if (req.total_num_uuars > MLX5_MAX_UUARS) 928 return ERR_PTR(-ENOMEM); 929 930 if (req.total_num_uuars == 0) 931 return ERR_PTR(-EINVAL); 932 933 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2) 934 return ERR_PTR(-EOPNOTSUPP); 935 936 if (reqlen > sizeof(req) && 937 !ib_is_udata_cleared(udata, sizeof(req), 938 reqlen - sizeof(req))) 939 return ERR_PTR(-EOPNOTSUPP); 940 941 req.total_num_uuars = ALIGN(req.total_num_uuars, 942 MLX5_NON_FP_BF_REGS_PER_PAGE); 943 if (req.num_low_latency_uuars > req.total_num_uuars - 1) 944 return ERR_PTR(-EINVAL); 945 946 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE; 947 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE; 948 resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp); 949 if (mlx5_core_is_pf(dev->mdev) && MLX5_CAP_GEN(dev->mdev, bf)) 950 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size); 951 resp.cache_line_size = L1_CACHE_BYTES; 952 resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq); 953 resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq); 954 resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 955 resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 956 resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz); 957 resp.cqe_version = min_t(__u8, 958 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version), 959 req.max_cqe_version); 960 resp.response_length = min(offsetof(typeof(resp), response_length) + 961 sizeof(resp.response_length), udata->outlen); 962 963 context = kzalloc(sizeof(*context), GFP_KERNEL); 964 if (!context) 965 return ERR_PTR(-ENOMEM); 966 967 uuari = &context->uuari; 968 mutex_init(&uuari->lock); 969 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL); 970 if (!uars) { 971 err = -ENOMEM; 972 goto out_ctx; 973 } 974 975 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars), 976 sizeof(*uuari->bitmap), 977 GFP_KERNEL); 978 if (!uuari->bitmap) { 979 err = -ENOMEM; 980 goto out_uar_ctx; 981 } 982 /* 983 * clear all fast path uuars 984 */ 985 for (i = 0; i < gross_uuars; i++) { 986 uuarn = i & 3; 987 if (uuarn == 2 || uuarn == 3) 988 set_bit(i, uuari->bitmap); 989 } 990 991 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL); 992 if (!uuari->count) { 993 err = -ENOMEM; 994 goto out_bitmap; 995 } 996 997 for (i = 0; i < num_uars; i++) { 998 err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index); 999 if (err) 1000 goto out_count; 1001 } 1002 1003 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 1004 context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range; 1005 #endif 1006 1007 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) { 1008 err = mlx5_core_alloc_transport_domain(dev->mdev, 1009 &context->tdn); 1010 if (err) 1011 goto out_uars; 1012 } 1013 1014 INIT_LIST_HEAD(&context->vma_private_list); 1015 INIT_LIST_HEAD(&context->db_page_list); 1016 mutex_init(&context->db_page_mutex); 1017 1018 resp.tot_uuars = req.total_num_uuars; 1019 resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports); 1020 1021 if (field_avail(typeof(resp), cqe_version, udata->outlen)) 1022 resp.response_length += sizeof(resp.cqe_version); 1023 1024 if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) { 1025 resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE; 1026 resp.response_length += sizeof(resp.cmds_supp_uhw); 1027 } 1028 1029 /* 1030 * We don't want to expose information from the PCI bar that is located 1031 * after 4096 bytes, so if the arch only supports larger pages, let's 1032 * pretend we don't support reading the HCA's core clock. This is also 1033 * forced by mmap function. 1034 */ 1035 if (PAGE_SIZE <= 4096 && 1036 field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) { 1037 resp.comp_mask |= 1038 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET; 1039 resp.hca_core_clock_offset = 1040 offsetof(struct mlx5_init_seg, internal_timer_h) % 1041 PAGE_SIZE; 1042 resp.response_length += sizeof(resp.hca_core_clock_offset) + 1043 sizeof(resp.reserved2); 1044 } 1045 1046 err = ib_copy_to_udata(udata, &resp, resp.response_length); 1047 if (err) 1048 goto out_td; 1049 1050 uuari->ver = ver; 1051 uuari->num_low_latency_uuars = req.num_low_latency_uuars; 1052 uuari->uars = uars; 1053 uuari->num_uars = num_uars; 1054 context->cqe_version = resp.cqe_version; 1055 1056 return &context->ibucontext; 1057 1058 out_td: 1059 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1060 mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn); 1061 1062 out_uars: 1063 for (i--; i >= 0; i--) 1064 mlx5_cmd_free_uar(dev->mdev, uars[i].index); 1065 out_count: 1066 kfree(uuari->count); 1067 1068 out_bitmap: 1069 kfree(uuari->bitmap); 1070 1071 out_uar_ctx: 1072 kfree(uars); 1073 1074 out_ctx: 1075 kfree(context); 1076 return ERR_PTR(err); 1077 } 1078 1079 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 1080 { 1081 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 1082 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 1083 struct mlx5_uuar_info *uuari = &context->uuari; 1084 int i; 1085 1086 if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1087 mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn); 1088 1089 for (i = 0; i < uuari->num_uars; i++) { 1090 if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index)) 1091 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index); 1092 } 1093 1094 kfree(uuari->count); 1095 kfree(uuari->bitmap); 1096 kfree(uuari->uars); 1097 kfree(context); 1098 1099 return 0; 1100 } 1101 1102 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index) 1103 { 1104 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index; 1105 } 1106 1107 static int get_command(unsigned long offset) 1108 { 1109 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 1110 } 1111 1112 static int get_arg(unsigned long offset) 1113 { 1114 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 1115 } 1116 1117 static int get_index(unsigned long offset) 1118 { 1119 return get_arg(offset); 1120 } 1121 1122 static void mlx5_ib_vma_open(struct vm_area_struct *area) 1123 { 1124 /* vma_open is called when a new VMA is created on top of our VMA. This 1125 * is done through either mremap flow or split_vma (usually due to 1126 * mlock, madvise, munmap, etc.) We do not support a clone of the VMA, 1127 * as this VMA is strongly hardware related. Therefore we set the 1128 * vm_ops of the newly created/cloned VMA to NULL, to prevent it from 1129 * calling us again and trying to do incorrect actions. We assume that 1130 * the original VMA size is exactly a single page, and therefore all 1131 * "splitting" operation will not happen to it. 1132 */ 1133 area->vm_ops = NULL; 1134 } 1135 1136 static void mlx5_ib_vma_close(struct vm_area_struct *area) 1137 { 1138 struct mlx5_ib_vma_private_data *mlx5_ib_vma_priv_data; 1139 1140 /* It's guaranteed that all VMAs opened on a FD are closed before the 1141 * file itself is closed, therefore no sync is needed with the regular 1142 * closing flow. (e.g. mlx5 ib_dealloc_ucontext) 1143 * However need a sync with accessing the vma as part of 1144 * mlx5_ib_disassociate_ucontext. 1145 * The close operation is usually called under mm->mmap_sem except when 1146 * process is exiting. 1147 * The exiting case is handled explicitly as part of 1148 * mlx5_ib_disassociate_ucontext. 1149 */ 1150 mlx5_ib_vma_priv_data = (struct mlx5_ib_vma_private_data *)area->vm_private_data; 1151 1152 /* setting the vma context pointer to null in the mlx5_ib driver's 1153 * private data, to protect a race condition in 1154 * mlx5_ib_disassociate_ucontext(). 1155 */ 1156 mlx5_ib_vma_priv_data->vma = NULL; 1157 list_del(&mlx5_ib_vma_priv_data->list); 1158 kfree(mlx5_ib_vma_priv_data); 1159 } 1160 1161 static const struct vm_operations_struct mlx5_ib_vm_ops = { 1162 .open = mlx5_ib_vma_open, 1163 .close = mlx5_ib_vma_close 1164 }; 1165 1166 static int mlx5_ib_set_vma_data(struct vm_area_struct *vma, 1167 struct mlx5_ib_ucontext *ctx) 1168 { 1169 struct mlx5_ib_vma_private_data *vma_prv; 1170 struct list_head *vma_head = &ctx->vma_private_list; 1171 1172 vma_prv = kzalloc(sizeof(*vma_prv), GFP_KERNEL); 1173 if (!vma_prv) 1174 return -ENOMEM; 1175 1176 vma_prv->vma = vma; 1177 vma->vm_private_data = vma_prv; 1178 vma->vm_ops = &mlx5_ib_vm_ops; 1179 1180 list_add(&vma_prv->list, vma_head); 1181 1182 return 0; 1183 } 1184 1185 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 1186 { 1187 int ret; 1188 struct vm_area_struct *vma; 1189 struct mlx5_ib_vma_private_data *vma_private, *n; 1190 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 1191 struct task_struct *owning_process = NULL; 1192 struct mm_struct *owning_mm = NULL; 1193 1194 owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID); 1195 if (!owning_process) 1196 return; 1197 1198 owning_mm = get_task_mm(owning_process); 1199 if (!owning_mm) { 1200 pr_info("no mm, disassociate ucontext is pending task termination\n"); 1201 while (1) { 1202 put_task_struct(owning_process); 1203 usleep_range(1000, 2000); 1204 owning_process = get_pid_task(ibcontext->tgid, 1205 PIDTYPE_PID); 1206 if (!owning_process || 1207 owning_process->state == TASK_DEAD) { 1208 pr_info("disassociate ucontext done, task was terminated\n"); 1209 /* in case task was dead need to release the 1210 * task struct. 1211 */ 1212 if (owning_process) 1213 put_task_struct(owning_process); 1214 return; 1215 } 1216 } 1217 } 1218 1219 /* need to protect from a race on closing the vma as part of 1220 * mlx5_ib_vma_close. 1221 */ 1222 down_read(&owning_mm->mmap_sem); 1223 list_for_each_entry_safe(vma_private, n, &context->vma_private_list, 1224 list) { 1225 vma = vma_private->vma; 1226 ret = zap_vma_ptes(vma, vma->vm_start, 1227 PAGE_SIZE); 1228 WARN_ONCE(ret, "%s: zap_vma_ptes failed", __func__); 1229 /* context going to be destroyed, should 1230 * not access ops any more. 1231 */ 1232 vma->vm_ops = NULL; 1233 list_del(&vma_private->list); 1234 kfree(vma_private); 1235 } 1236 up_read(&owning_mm->mmap_sem); 1237 mmput(owning_mm); 1238 put_task_struct(owning_process); 1239 } 1240 1241 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) 1242 { 1243 switch (cmd) { 1244 case MLX5_IB_MMAP_WC_PAGE: 1245 return "WC"; 1246 case MLX5_IB_MMAP_REGULAR_PAGE: 1247 return "best effort WC"; 1248 case MLX5_IB_MMAP_NC_PAGE: 1249 return "NC"; 1250 default: 1251 return NULL; 1252 } 1253 } 1254 1255 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, 1256 struct vm_area_struct *vma, 1257 struct mlx5_ib_ucontext *context) 1258 { 1259 struct mlx5_uuar_info *uuari = &context->uuari; 1260 int err; 1261 unsigned long idx; 1262 phys_addr_t pfn, pa; 1263 pgprot_t prot; 1264 1265 switch (cmd) { 1266 case MLX5_IB_MMAP_WC_PAGE: 1267 /* Some architectures don't support WC memory */ 1268 #if defined(CONFIG_X86) 1269 if (!pat_enabled()) 1270 return -EPERM; 1271 #elif !(defined(CONFIG_PPC) || (defined(CONFIG_ARM) && defined(CONFIG_MMU))) 1272 return -EPERM; 1273 #endif 1274 /* fall through */ 1275 case MLX5_IB_MMAP_REGULAR_PAGE: 1276 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */ 1277 prot = pgprot_writecombine(vma->vm_page_prot); 1278 break; 1279 case MLX5_IB_MMAP_NC_PAGE: 1280 prot = pgprot_noncached(vma->vm_page_prot); 1281 break; 1282 default: 1283 return -EINVAL; 1284 } 1285 1286 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 1287 return -EINVAL; 1288 1289 idx = get_index(vma->vm_pgoff); 1290 if (idx >= uuari->num_uars) 1291 return -EINVAL; 1292 1293 pfn = uar_index2pfn(dev, uuari->uars[idx].index); 1294 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn); 1295 1296 vma->vm_page_prot = prot; 1297 err = io_remap_pfn_range(vma, vma->vm_start, pfn, 1298 PAGE_SIZE, vma->vm_page_prot); 1299 if (err) { 1300 mlx5_ib_err(dev, "io_remap_pfn_range failed with error=%d, vm_start=0x%lx, pfn=%pa, mmap_cmd=%s\n", 1301 err, vma->vm_start, &pfn, mmap_cmd2str(cmd)); 1302 return -EAGAIN; 1303 } 1304 1305 pa = pfn << PAGE_SHIFT; 1306 mlx5_ib_dbg(dev, "mapped %s at 0x%lx, PA %pa\n", mmap_cmd2str(cmd), 1307 vma->vm_start, &pa); 1308 1309 return mlx5_ib_set_vma_data(vma, context); 1310 } 1311 1312 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 1313 { 1314 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 1315 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 1316 unsigned long command; 1317 phys_addr_t pfn; 1318 1319 command = get_command(vma->vm_pgoff); 1320 switch (command) { 1321 case MLX5_IB_MMAP_WC_PAGE: 1322 case MLX5_IB_MMAP_NC_PAGE: 1323 case MLX5_IB_MMAP_REGULAR_PAGE: 1324 return uar_mmap(dev, command, vma, context); 1325 1326 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 1327 return -ENOSYS; 1328 1329 case MLX5_IB_MMAP_CORE_CLOCK: 1330 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 1331 return -EINVAL; 1332 1333 if (vma->vm_flags & VM_WRITE) 1334 return -EPERM; 1335 1336 /* Don't expose to user-space information it shouldn't have */ 1337 if (PAGE_SIZE > 4096) 1338 return -EOPNOTSUPP; 1339 1340 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 1341 pfn = (dev->mdev->iseg_base + 1342 offsetof(struct mlx5_init_seg, internal_timer_h)) >> 1343 PAGE_SHIFT; 1344 if (io_remap_pfn_range(vma, vma->vm_start, pfn, 1345 PAGE_SIZE, vma->vm_page_prot)) 1346 return -EAGAIN; 1347 1348 mlx5_ib_dbg(dev, "mapped internal timer at 0x%lx, PA 0x%llx\n", 1349 vma->vm_start, 1350 (unsigned long long)pfn << PAGE_SHIFT); 1351 break; 1352 1353 default: 1354 return -EINVAL; 1355 } 1356 1357 return 0; 1358 } 1359 1360 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev, 1361 struct ib_ucontext *context, 1362 struct ib_udata *udata) 1363 { 1364 struct mlx5_ib_alloc_pd_resp resp; 1365 struct mlx5_ib_pd *pd; 1366 int err; 1367 1368 pd = kmalloc(sizeof(*pd), GFP_KERNEL); 1369 if (!pd) 1370 return ERR_PTR(-ENOMEM); 1371 1372 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn); 1373 if (err) { 1374 kfree(pd); 1375 return ERR_PTR(err); 1376 } 1377 1378 if (context) { 1379 resp.pdn = pd->pdn; 1380 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 1381 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn); 1382 kfree(pd); 1383 return ERR_PTR(-EFAULT); 1384 } 1385 } 1386 1387 return &pd->ibpd; 1388 } 1389 1390 static int mlx5_ib_dealloc_pd(struct ib_pd *pd) 1391 { 1392 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 1393 struct mlx5_ib_pd *mpd = to_mpd(pd); 1394 1395 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn); 1396 kfree(mpd); 1397 1398 return 0; 1399 } 1400 1401 static bool outer_header_zero(u32 *match_criteria) 1402 { 1403 int size = MLX5_ST_SZ_BYTES(fte_match_param); 1404 char *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_criteria, 1405 outer_headers); 1406 1407 return outer_headers_c[0] == 0 && !memcmp(outer_headers_c, 1408 outer_headers_c + 1, 1409 size - 1); 1410 } 1411 1412 static int parse_flow_attr(u32 *match_c, u32 *match_v, 1413 union ib_flow_spec *ib_spec) 1414 { 1415 void *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_c, 1416 outer_headers); 1417 void *outer_headers_v = MLX5_ADDR_OF(fte_match_param, match_v, 1418 outer_headers); 1419 switch (ib_spec->type) { 1420 case IB_FLOW_SPEC_ETH: 1421 if (ib_spec->size != sizeof(ib_spec->eth)) 1422 return -EINVAL; 1423 1424 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c, 1425 dmac_47_16), 1426 ib_spec->eth.mask.dst_mac); 1427 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v, 1428 dmac_47_16), 1429 ib_spec->eth.val.dst_mac); 1430 1431 if (ib_spec->eth.mask.vlan_tag) { 1432 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1433 vlan_tag, 1); 1434 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1435 vlan_tag, 1); 1436 1437 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1438 first_vid, ntohs(ib_spec->eth.mask.vlan_tag)); 1439 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1440 first_vid, ntohs(ib_spec->eth.val.vlan_tag)); 1441 1442 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1443 first_cfi, 1444 ntohs(ib_spec->eth.mask.vlan_tag) >> 12); 1445 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1446 first_cfi, 1447 ntohs(ib_spec->eth.val.vlan_tag) >> 12); 1448 1449 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1450 first_prio, 1451 ntohs(ib_spec->eth.mask.vlan_tag) >> 13); 1452 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1453 first_prio, 1454 ntohs(ib_spec->eth.val.vlan_tag) >> 13); 1455 } 1456 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1457 ethertype, ntohs(ib_spec->eth.mask.ether_type)); 1458 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1459 ethertype, ntohs(ib_spec->eth.val.ether_type)); 1460 break; 1461 case IB_FLOW_SPEC_IPV4: 1462 if (ib_spec->size != sizeof(ib_spec->ipv4)) 1463 return -EINVAL; 1464 1465 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1466 ethertype, 0xffff); 1467 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1468 ethertype, ETH_P_IP); 1469 1470 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c, 1471 src_ipv4_src_ipv6.ipv4_layout.ipv4), 1472 &ib_spec->ipv4.mask.src_ip, 1473 sizeof(ib_spec->ipv4.mask.src_ip)); 1474 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v, 1475 src_ipv4_src_ipv6.ipv4_layout.ipv4), 1476 &ib_spec->ipv4.val.src_ip, 1477 sizeof(ib_spec->ipv4.val.src_ip)); 1478 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c, 1479 dst_ipv4_dst_ipv6.ipv4_layout.ipv4), 1480 &ib_spec->ipv4.mask.dst_ip, 1481 sizeof(ib_spec->ipv4.mask.dst_ip)); 1482 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v, 1483 dst_ipv4_dst_ipv6.ipv4_layout.ipv4), 1484 &ib_spec->ipv4.val.dst_ip, 1485 sizeof(ib_spec->ipv4.val.dst_ip)); 1486 break; 1487 case IB_FLOW_SPEC_IPV6: 1488 if (ib_spec->size != sizeof(ib_spec->ipv6)) 1489 return -EINVAL; 1490 1491 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, 1492 ethertype, 0xffff); 1493 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, 1494 ethertype, ETH_P_IPV6); 1495 1496 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c, 1497 src_ipv4_src_ipv6.ipv6_layout.ipv6), 1498 &ib_spec->ipv6.mask.src_ip, 1499 sizeof(ib_spec->ipv6.mask.src_ip)); 1500 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v, 1501 src_ipv4_src_ipv6.ipv6_layout.ipv6), 1502 &ib_spec->ipv6.val.src_ip, 1503 sizeof(ib_spec->ipv6.val.src_ip)); 1504 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c, 1505 dst_ipv4_dst_ipv6.ipv6_layout.ipv6), 1506 &ib_spec->ipv6.mask.dst_ip, 1507 sizeof(ib_spec->ipv6.mask.dst_ip)); 1508 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v, 1509 dst_ipv4_dst_ipv6.ipv6_layout.ipv6), 1510 &ib_spec->ipv6.val.dst_ip, 1511 sizeof(ib_spec->ipv6.val.dst_ip)); 1512 break; 1513 case IB_FLOW_SPEC_TCP: 1514 if (ib_spec->size != sizeof(ib_spec->tcp_udp)) 1515 return -EINVAL; 1516 1517 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol, 1518 0xff); 1519 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol, 1520 IPPROTO_TCP); 1521 1522 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport, 1523 ntohs(ib_spec->tcp_udp.mask.src_port)); 1524 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_sport, 1525 ntohs(ib_spec->tcp_udp.val.src_port)); 1526 1527 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport, 1528 ntohs(ib_spec->tcp_udp.mask.dst_port)); 1529 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_dport, 1530 ntohs(ib_spec->tcp_udp.val.dst_port)); 1531 break; 1532 case IB_FLOW_SPEC_UDP: 1533 if (ib_spec->size != sizeof(ib_spec->tcp_udp)) 1534 return -EINVAL; 1535 1536 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol, 1537 0xff); 1538 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol, 1539 IPPROTO_UDP); 1540 1541 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_sport, 1542 ntohs(ib_spec->tcp_udp.mask.src_port)); 1543 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_sport, 1544 ntohs(ib_spec->tcp_udp.val.src_port)); 1545 1546 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_dport, 1547 ntohs(ib_spec->tcp_udp.mask.dst_port)); 1548 MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_dport, 1549 ntohs(ib_spec->tcp_udp.val.dst_port)); 1550 break; 1551 default: 1552 return -EINVAL; 1553 } 1554 1555 return 0; 1556 } 1557 1558 /* If a flow could catch both multicast and unicast packets, 1559 * it won't fall into the multicast flow steering table and this rule 1560 * could steal other multicast packets. 1561 */ 1562 static bool flow_is_multicast_only(struct ib_flow_attr *ib_attr) 1563 { 1564 struct ib_flow_spec_eth *eth_spec; 1565 1566 if (ib_attr->type != IB_FLOW_ATTR_NORMAL || 1567 ib_attr->size < sizeof(struct ib_flow_attr) + 1568 sizeof(struct ib_flow_spec_eth) || 1569 ib_attr->num_of_specs < 1) 1570 return false; 1571 1572 eth_spec = (struct ib_flow_spec_eth *)(ib_attr + 1); 1573 if (eth_spec->type != IB_FLOW_SPEC_ETH || 1574 eth_spec->size != sizeof(*eth_spec)) 1575 return false; 1576 1577 return is_multicast_ether_addr(eth_spec->mask.dst_mac) && 1578 is_multicast_ether_addr(eth_spec->val.dst_mac); 1579 } 1580 1581 static bool is_valid_attr(struct ib_flow_attr *flow_attr) 1582 { 1583 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1584 bool has_ipv4_spec = false; 1585 bool eth_type_ipv4 = true; 1586 unsigned int spec_index; 1587 1588 /* Validate that ethertype is correct */ 1589 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) { 1590 if (ib_spec->type == IB_FLOW_SPEC_ETH && 1591 ib_spec->eth.mask.ether_type) { 1592 if (!((ib_spec->eth.mask.ether_type == htons(0xffff)) && 1593 ib_spec->eth.val.ether_type == htons(ETH_P_IP))) 1594 eth_type_ipv4 = false; 1595 } else if (ib_spec->type == IB_FLOW_SPEC_IPV4) { 1596 has_ipv4_spec = true; 1597 } 1598 ib_spec = (void *)ib_spec + ib_spec->size; 1599 } 1600 return !has_ipv4_spec || eth_type_ipv4; 1601 } 1602 1603 static void put_flow_table(struct mlx5_ib_dev *dev, 1604 struct mlx5_ib_flow_prio *prio, bool ft_added) 1605 { 1606 prio->refcount -= !!ft_added; 1607 if (!prio->refcount) { 1608 mlx5_destroy_flow_table(prio->flow_table); 1609 prio->flow_table = NULL; 1610 } 1611 } 1612 1613 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id) 1614 { 1615 struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device); 1616 struct mlx5_ib_flow_handler *handler = container_of(flow_id, 1617 struct mlx5_ib_flow_handler, 1618 ibflow); 1619 struct mlx5_ib_flow_handler *iter, *tmp; 1620 1621 mutex_lock(&dev->flow_db.lock); 1622 1623 list_for_each_entry_safe(iter, tmp, &handler->list, list) { 1624 mlx5_del_flow_rule(iter->rule); 1625 list_del(&iter->list); 1626 kfree(iter); 1627 } 1628 1629 mlx5_del_flow_rule(handler->rule); 1630 put_flow_table(dev, &dev->flow_db.prios[handler->prio], true); 1631 mutex_unlock(&dev->flow_db.lock); 1632 1633 kfree(handler); 1634 1635 return 0; 1636 } 1637 1638 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap) 1639 { 1640 priority *= 2; 1641 if (!dont_trap) 1642 priority++; 1643 return priority; 1644 } 1645 1646 #define MLX5_FS_MAX_TYPES 10 1647 #define MLX5_FS_MAX_ENTRIES 32000UL 1648 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev, 1649 struct ib_flow_attr *flow_attr) 1650 { 1651 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP; 1652 struct mlx5_flow_namespace *ns = NULL; 1653 struct mlx5_ib_flow_prio *prio; 1654 struct mlx5_flow_table *ft; 1655 int num_entries; 1656 int num_groups; 1657 int priority; 1658 int err = 0; 1659 1660 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1661 if (flow_is_multicast_only(flow_attr) && 1662 !dont_trap) 1663 priority = MLX5_IB_FLOW_MCAST_PRIO; 1664 else 1665 priority = ib_prio_to_core_prio(flow_attr->priority, 1666 dont_trap); 1667 ns = mlx5_get_flow_namespace(dev->mdev, 1668 MLX5_FLOW_NAMESPACE_BYPASS); 1669 num_entries = MLX5_FS_MAX_ENTRIES; 1670 num_groups = MLX5_FS_MAX_TYPES; 1671 prio = &dev->flow_db.prios[priority]; 1672 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || 1673 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) { 1674 ns = mlx5_get_flow_namespace(dev->mdev, 1675 MLX5_FLOW_NAMESPACE_LEFTOVERS); 1676 build_leftovers_ft_param(&priority, 1677 &num_entries, 1678 &num_groups); 1679 prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO]; 1680 } 1681 1682 if (!ns) 1683 return ERR_PTR(-ENOTSUPP); 1684 1685 ft = prio->flow_table; 1686 if (!ft) { 1687 ft = mlx5_create_auto_grouped_flow_table(ns, priority, 1688 num_entries, 1689 num_groups, 1690 0); 1691 1692 if (!IS_ERR(ft)) { 1693 prio->refcount = 0; 1694 prio->flow_table = ft; 1695 } else { 1696 err = PTR_ERR(ft); 1697 } 1698 } 1699 1700 return err ? ERR_PTR(err) : prio; 1701 } 1702 1703 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev, 1704 struct mlx5_ib_flow_prio *ft_prio, 1705 struct ib_flow_attr *flow_attr, 1706 struct mlx5_flow_destination *dst) 1707 { 1708 struct mlx5_flow_table *ft = ft_prio->flow_table; 1709 struct mlx5_ib_flow_handler *handler; 1710 struct mlx5_flow_spec *spec; 1711 void *ib_flow = flow_attr + 1; 1712 unsigned int spec_index; 1713 u32 action; 1714 int err = 0; 1715 1716 if (!is_valid_attr(flow_attr)) 1717 return ERR_PTR(-EINVAL); 1718 1719 spec = mlx5_vzalloc(sizeof(*spec)); 1720 handler = kzalloc(sizeof(*handler), GFP_KERNEL); 1721 if (!handler || !spec) { 1722 err = -ENOMEM; 1723 goto free; 1724 } 1725 1726 INIT_LIST_HEAD(&handler->list); 1727 1728 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) { 1729 err = parse_flow_attr(spec->match_criteria, 1730 spec->match_value, ib_flow); 1731 if (err < 0) 1732 goto free; 1733 1734 ib_flow += ((union ib_flow_spec *)ib_flow)->size; 1735 } 1736 1737 /* Outer header support only */ 1738 spec->match_criteria_enable = (!outer_header_zero(spec->match_criteria)) 1739 << 0; 1740 action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST : 1741 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO; 1742 handler->rule = mlx5_add_flow_rule(ft, spec, 1743 action, 1744 MLX5_FS_DEFAULT_FLOW_TAG, 1745 dst); 1746 1747 if (IS_ERR(handler->rule)) { 1748 err = PTR_ERR(handler->rule); 1749 goto free; 1750 } 1751 1752 handler->prio = ft_prio - dev->flow_db.prios; 1753 1754 ft_prio->flow_table = ft; 1755 free: 1756 if (err) 1757 kfree(handler); 1758 kvfree(spec); 1759 return err ? ERR_PTR(err) : handler; 1760 } 1761 1762 static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev, 1763 struct mlx5_ib_flow_prio *ft_prio, 1764 struct ib_flow_attr *flow_attr, 1765 struct mlx5_flow_destination *dst) 1766 { 1767 struct mlx5_ib_flow_handler *handler_dst = NULL; 1768 struct mlx5_ib_flow_handler *handler = NULL; 1769 1770 handler = create_flow_rule(dev, ft_prio, flow_attr, NULL); 1771 if (!IS_ERR(handler)) { 1772 handler_dst = create_flow_rule(dev, ft_prio, 1773 flow_attr, dst); 1774 if (IS_ERR(handler_dst)) { 1775 mlx5_del_flow_rule(handler->rule); 1776 kfree(handler); 1777 handler = handler_dst; 1778 } else { 1779 list_add(&handler_dst->list, &handler->list); 1780 } 1781 } 1782 1783 return handler; 1784 } 1785 enum { 1786 LEFTOVERS_MC, 1787 LEFTOVERS_UC, 1788 }; 1789 1790 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev, 1791 struct mlx5_ib_flow_prio *ft_prio, 1792 struct ib_flow_attr *flow_attr, 1793 struct mlx5_flow_destination *dst) 1794 { 1795 struct mlx5_ib_flow_handler *handler_ucast = NULL; 1796 struct mlx5_ib_flow_handler *handler = NULL; 1797 1798 static struct { 1799 struct ib_flow_attr flow_attr; 1800 struct ib_flow_spec_eth eth_flow; 1801 } leftovers_specs[] = { 1802 [LEFTOVERS_MC] = { 1803 .flow_attr = { 1804 .num_of_specs = 1, 1805 .size = sizeof(leftovers_specs[0]) 1806 }, 1807 .eth_flow = { 1808 .type = IB_FLOW_SPEC_ETH, 1809 .size = sizeof(struct ib_flow_spec_eth), 1810 .mask = {.dst_mac = {0x1} }, 1811 .val = {.dst_mac = {0x1} } 1812 } 1813 }, 1814 [LEFTOVERS_UC] = { 1815 .flow_attr = { 1816 .num_of_specs = 1, 1817 .size = sizeof(leftovers_specs[0]) 1818 }, 1819 .eth_flow = { 1820 .type = IB_FLOW_SPEC_ETH, 1821 .size = sizeof(struct ib_flow_spec_eth), 1822 .mask = {.dst_mac = {0x1} }, 1823 .val = {.dst_mac = {} } 1824 } 1825 } 1826 }; 1827 1828 handler = create_flow_rule(dev, ft_prio, 1829 &leftovers_specs[LEFTOVERS_MC].flow_attr, 1830 dst); 1831 if (!IS_ERR(handler) && 1832 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) { 1833 handler_ucast = create_flow_rule(dev, ft_prio, 1834 &leftovers_specs[LEFTOVERS_UC].flow_attr, 1835 dst); 1836 if (IS_ERR(handler_ucast)) { 1837 kfree(handler); 1838 handler = handler_ucast; 1839 } else { 1840 list_add(&handler_ucast->list, &handler->list); 1841 } 1842 } 1843 1844 return handler; 1845 } 1846 1847 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp, 1848 struct ib_flow_attr *flow_attr, 1849 int domain) 1850 { 1851 struct mlx5_ib_dev *dev = to_mdev(qp->device); 1852 struct mlx5_ib_flow_handler *handler = NULL; 1853 struct mlx5_flow_destination *dst = NULL; 1854 struct mlx5_ib_flow_prio *ft_prio; 1855 int err; 1856 1857 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) 1858 return ERR_PTR(-ENOSPC); 1859 1860 if (domain != IB_FLOW_DOMAIN_USER || 1861 flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) || 1862 (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)) 1863 return ERR_PTR(-EINVAL); 1864 1865 dst = kzalloc(sizeof(*dst), GFP_KERNEL); 1866 if (!dst) 1867 return ERR_PTR(-ENOMEM); 1868 1869 mutex_lock(&dev->flow_db.lock); 1870 1871 ft_prio = get_flow_table(dev, flow_attr); 1872 if (IS_ERR(ft_prio)) { 1873 err = PTR_ERR(ft_prio); 1874 goto unlock; 1875 } 1876 1877 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR; 1878 dst->tir_num = to_mqp(qp)->raw_packet_qp.rq.tirn; 1879 1880 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1881 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) { 1882 handler = create_dont_trap_rule(dev, ft_prio, 1883 flow_attr, dst); 1884 } else { 1885 handler = create_flow_rule(dev, ft_prio, flow_attr, 1886 dst); 1887 } 1888 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || 1889 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) { 1890 handler = create_leftovers_rule(dev, ft_prio, flow_attr, 1891 dst); 1892 } else { 1893 err = -EINVAL; 1894 goto destroy_ft; 1895 } 1896 1897 if (IS_ERR(handler)) { 1898 err = PTR_ERR(handler); 1899 handler = NULL; 1900 goto destroy_ft; 1901 } 1902 1903 ft_prio->refcount++; 1904 mutex_unlock(&dev->flow_db.lock); 1905 kfree(dst); 1906 1907 return &handler->ibflow; 1908 1909 destroy_ft: 1910 put_flow_table(dev, ft_prio, false); 1911 unlock: 1912 mutex_unlock(&dev->flow_db.lock); 1913 kfree(dst); 1914 kfree(handler); 1915 return ERR_PTR(err); 1916 } 1917 1918 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1919 { 1920 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 1921 int err; 1922 1923 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num); 1924 if (err) 1925 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 1926 ibqp->qp_num, gid->raw); 1927 1928 return err; 1929 } 1930 1931 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1932 { 1933 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 1934 int err; 1935 1936 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num); 1937 if (err) 1938 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 1939 ibqp->qp_num, gid->raw); 1940 1941 return err; 1942 } 1943 1944 static int init_node_data(struct mlx5_ib_dev *dev) 1945 { 1946 int err; 1947 1948 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc); 1949 if (err) 1950 return err; 1951 1952 dev->mdev->rev_id = dev->mdev->pdev->revision; 1953 1954 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid); 1955 } 1956 1957 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr, 1958 char *buf) 1959 { 1960 struct mlx5_ib_dev *dev = 1961 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 1962 1963 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages); 1964 } 1965 1966 static ssize_t show_reg_pages(struct device *device, 1967 struct device_attribute *attr, char *buf) 1968 { 1969 struct mlx5_ib_dev *dev = 1970 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 1971 1972 return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages)); 1973 } 1974 1975 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1976 char *buf) 1977 { 1978 struct mlx5_ib_dev *dev = 1979 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 1980 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device); 1981 } 1982 1983 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1984 char *buf) 1985 { 1986 struct mlx5_ib_dev *dev = 1987 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 1988 return sprintf(buf, "%x\n", dev->mdev->rev_id); 1989 } 1990 1991 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1992 char *buf) 1993 { 1994 struct mlx5_ib_dev *dev = 1995 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 1996 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 1997 dev->mdev->board_id); 1998 } 1999 2000 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 2001 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 2002 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 2003 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL); 2004 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL); 2005 2006 static struct device_attribute *mlx5_class_attributes[] = { 2007 &dev_attr_hw_rev, 2008 &dev_attr_hca_type, 2009 &dev_attr_board_id, 2010 &dev_attr_fw_pages, 2011 &dev_attr_reg_pages, 2012 }; 2013 2014 static void pkey_change_handler(struct work_struct *work) 2015 { 2016 struct mlx5_ib_port_resources *ports = 2017 container_of(work, struct mlx5_ib_port_resources, 2018 pkey_change_work); 2019 2020 mutex_lock(&ports->devr->mutex); 2021 mlx5_ib_gsi_pkey_change(ports->gsi); 2022 mutex_unlock(&ports->devr->mutex); 2023 } 2024 2025 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev) 2026 { 2027 struct mlx5_ib_qp *mqp; 2028 struct mlx5_ib_cq *send_mcq, *recv_mcq; 2029 struct mlx5_core_cq *mcq; 2030 struct list_head cq_armed_list; 2031 unsigned long flags_qp; 2032 unsigned long flags_cq; 2033 unsigned long flags; 2034 2035 INIT_LIST_HEAD(&cq_armed_list); 2036 2037 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 2038 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 2039 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 2040 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 2041 if (mqp->sq.tail != mqp->sq.head) { 2042 send_mcq = to_mcq(mqp->ibqp.send_cq); 2043 spin_lock_irqsave(&send_mcq->lock, flags_cq); 2044 if (send_mcq->mcq.comp && 2045 mqp->ibqp.send_cq->comp_handler) { 2046 if (!send_mcq->mcq.reset_notify_added) { 2047 send_mcq->mcq.reset_notify_added = 1; 2048 list_add_tail(&send_mcq->mcq.reset_notify, 2049 &cq_armed_list); 2050 } 2051 } 2052 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 2053 } 2054 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 2055 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 2056 /* no handling is needed for SRQ */ 2057 if (!mqp->ibqp.srq) { 2058 if (mqp->rq.tail != mqp->rq.head) { 2059 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 2060 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 2061 if (recv_mcq->mcq.comp && 2062 mqp->ibqp.recv_cq->comp_handler) { 2063 if (!recv_mcq->mcq.reset_notify_added) { 2064 recv_mcq->mcq.reset_notify_added = 1; 2065 list_add_tail(&recv_mcq->mcq.reset_notify, 2066 &cq_armed_list); 2067 } 2068 } 2069 spin_unlock_irqrestore(&recv_mcq->lock, 2070 flags_cq); 2071 } 2072 } 2073 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 2074 } 2075 /*At that point all inflight post send were put to be executed as of we 2076 * lock/unlock above locks Now need to arm all involved CQs. 2077 */ 2078 list_for_each_entry(mcq, &cq_armed_list, reset_notify) { 2079 mcq->comp(mcq); 2080 } 2081 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 2082 } 2083 2084 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context, 2085 enum mlx5_dev_event event, unsigned long param) 2086 { 2087 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context; 2088 struct ib_event ibev; 2089 2090 u8 port = 0; 2091 2092 switch (event) { 2093 case MLX5_DEV_EVENT_SYS_ERROR: 2094 ibdev->ib_active = false; 2095 ibev.event = IB_EVENT_DEVICE_FATAL; 2096 mlx5_ib_handle_internal_error(ibdev); 2097 break; 2098 2099 case MLX5_DEV_EVENT_PORT_UP: 2100 ibev.event = IB_EVENT_PORT_ACTIVE; 2101 port = (u8)param; 2102 break; 2103 2104 case MLX5_DEV_EVENT_PORT_DOWN: 2105 case MLX5_DEV_EVENT_PORT_INITIALIZED: 2106 ibev.event = IB_EVENT_PORT_ERR; 2107 port = (u8)param; 2108 break; 2109 2110 case MLX5_DEV_EVENT_LID_CHANGE: 2111 ibev.event = IB_EVENT_LID_CHANGE; 2112 port = (u8)param; 2113 break; 2114 2115 case MLX5_DEV_EVENT_PKEY_CHANGE: 2116 ibev.event = IB_EVENT_PKEY_CHANGE; 2117 port = (u8)param; 2118 2119 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work); 2120 break; 2121 2122 case MLX5_DEV_EVENT_GUID_CHANGE: 2123 ibev.event = IB_EVENT_GID_CHANGE; 2124 port = (u8)param; 2125 break; 2126 2127 case MLX5_DEV_EVENT_CLIENT_REREG: 2128 ibev.event = IB_EVENT_CLIENT_REREGISTER; 2129 port = (u8)param; 2130 break; 2131 } 2132 2133 ibev.device = &ibdev->ib_dev; 2134 ibev.element.port_num = port; 2135 2136 if (port < 1 || port > ibdev->num_ports) { 2137 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port); 2138 return; 2139 } 2140 2141 if (ibdev->ib_active) 2142 ib_dispatch_event(&ibev); 2143 } 2144 2145 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 2146 { 2147 int port; 2148 2149 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) 2150 mlx5_query_ext_port_caps(dev, port); 2151 } 2152 2153 static int get_port_caps(struct mlx5_ib_dev *dev) 2154 { 2155 struct ib_device_attr *dprops = NULL; 2156 struct ib_port_attr *pprops = NULL; 2157 int err = -ENOMEM; 2158 int port; 2159 struct ib_udata uhw = {.inlen = 0, .outlen = 0}; 2160 2161 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL); 2162 if (!pprops) 2163 goto out; 2164 2165 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL); 2166 if (!dprops) 2167 goto out; 2168 2169 err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw); 2170 if (err) { 2171 mlx5_ib_warn(dev, "query_device failed %d\n", err); 2172 goto out; 2173 } 2174 2175 for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) { 2176 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops); 2177 if (err) { 2178 mlx5_ib_warn(dev, "query_port %d failed %d\n", 2179 port, err); 2180 break; 2181 } 2182 dev->mdev->port_caps[port - 1].pkey_table_len = 2183 dprops->max_pkeys; 2184 dev->mdev->port_caps[port - 1].gid_table_len = 2185 pprops->gid_tbl_len; 2186 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n", 2187 dprops->max_pkeys, pprops->gid_tbl_len); 2188 } 2189 2190 out: 2191 kfree(pprops); 2192 kfree(dprops); 2193 2194 return err; 2195 } 2196 2197 static void destroy_umrc_res(struct mlx5_ib_dev *dev) 2198 { 2199 int err; 2200 2201 err = mlx5_mr_cache_cleanup(dev); 2202 if (err) 2203 mlx5_ib_warn(dev, "mr cache cleanup failed\n"); 2204 2205 mlx5_ib_destroy_qp(dev->umrc.qp); 2206 ib_free_cq(dev->umrc.cq); 2207 ib_dealloc_pd(dev->umrc.pd); 2208 } 2209 2210 enum { 2211 MAX_UMR_WR = 128, 2212 }; 2213 2214 static int create_umr_res(struct mlx5_ib_dev *dev) 2215 { 2216 struct ib_qp_init_attr *init_attr = NULL; 2217 struct ib_qp_attr *attr = NULL; 2218 struct ib_pd *pd; 2219 struct ib_cq *cq; 2220 struct ib_qp *qp; 2221 int ret; 2222 2223 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 2224 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); 2225 if (!attr || !init_attr) { 2226 ret = -ENOMEM; 2227 goto error_0; 2228 } 2229 2230 pd = ib_alloc_pd(&dev->ib_dev); 2231 if (IS_ERR(pd)) { 2232 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n"); 2233 ret = PTR_ERR(pd); 2234 goto error_0; 2235 } 2236 2237 cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ); 2238 if (IS_ERR(cq)) { 2239 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n"); 2240 ret = PTR_ERR(cq); 2241 goto error_2; 2242 } 2243 2244 init_attr->send_cq = cq; 2245 init_attr->recv_cq = cq; 2246 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; 2247 init_attr->cap.max_send_wr = MAX_UMR_WR; 2248 init_attr->cap.max_send_sge = 1; 2249 init_attr->qp_type = MLX5_IB_QPT_REG_UMR; 2250 init_attr->port_num = 1; 2251 qp = mlx5_ib_create_qp(pd, init_attr, NULL); 2252 if (IS_ERR(qp)) { 2253 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n"); 2254 ret = PTR_ERR(qp); 2255 goto error_3; 2256 } 2257 qp->device = &dev->ib_dev; 2258 qp->real_qp = qp; 2259 qp->uobject = NULL; 2260 qp->qp_type = MLX5_IB_QPT_REG_UMR; 2261 2262 attr->qp_state = IB_QPS_INIT; 2263 attr->port_num = 1; 2264 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | 2265 IB_QP_PORT, NULL); 2266 if (ret) { 2267 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n"); 2268 goto error_4; 2269 } 2270 2271 memset(attr, 0, sizeof(*attr)); 2272 attr->qp_state = IB_QPS_RTR; 2273 attr->path_mtu = IB_MTU_256; 2274 2275 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 2276 if (ret) { 2277 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n"); 2278 goto error_4; 2279 } 2280 2281 memset(attr, 0, sizeof(*attr)); 2282 attr->qp_state = IB_QPS_RTS; 2283 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 2284 if (ret) { 2285 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n"); 2286 goto error_4; 2287 } 2288 2289 dev->umrc.qp = qp; 2290 dev->umrc.cq = cq; 2291 dev->umrc.pd = pd; 2292 2293 sema_init(&dev->umrc.sem, MAX_UMR_WR); 2294 ret = mlx5_mr_cache_init(dev); 2295 if (ret) { 2296 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 2297 goto error_4; 2298 } 2299 2300 kfree(attr); 2301 kfree(init_attr); 2302 2303 return 0; 2304 2305 error_4: 2306 mlx5_ib_destroy_qp(qp); 2307 2308 error_3: 2309 ib_free_cq(cq); 2310 2311 error_2: 2312 ib_dealloc_pd(pd); 2313 2314 error_0: 2315 kfree(attr); 2316 kfree(init_attr); 2317 return ret; 2318 } 2319 2320 static int create_dev_resources(struct mlx5_ib_resources *devr) 2321 { 2322 struct ib_srq_init_attr attr; 2323 struct mlx5_ib_dev *dev; 2324 struct ib_cq_init_attr cq_attr = {.cqe = 1}; 2325 int port; 2326 int ret = 0; 2327 2328 dev = container_of(devr, struct mlx5_ib_dev, devr); 2329 2330 mutex_init(&devr->mutex); 2331 2332 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL); 2333 if (IS_ERR(devr->p0)) { 2334 ret = PTR_ERR(devr->p0); 2335 goto error0; 2336 } 2337 devr->p0->device = &dev->ib_dev; 2338 devr->p0->uobject = NULL; 2339 atomic_set(&devr->p0->usecnt, 0); 2340 2341 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL); 2342 if (IS_ERR(devr->c0)) { 2343 ret = PTR_ERR(devr->c0); 2344 goto error1; 2345 } 2346 devr->c0->device = &dev->ib_dev; 2347 devr->c0->uobject = NULL; 2348 devr->c0->comp_handler = NULL; 2349 devr->c0->event_handler = NULL; 2350 devr->c0->cq_context = NULL; 2351 atomic_set(&devr->c0->usecnt, 0); 2352 2353 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 2354 if (IS_ERR(devr->x0)) { 2355 ret = PTR_ERR(devr->x0); 2356 goto error2; 2357 } 2358 devr->x0->device = &dev->ib_dev; 2359 devr->x0->inode = NULL; 2360 atomic_set(&devr->x0->usecnt, 0); 2361 mutex_init(&devr->x0->tgt_qp_mutex); 2362 INIT_LIST_HEAD(&devr->x0->tgt_qp_list); 2363 2364 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 2365 if (IS_ERR(devr->x1)) { 2366 ret = PTR_ERR(devr->x1); 2367 goto error3; 2368 } 2369 devr->x1->device = &dev->ib_dev; 2370 devr->x1->inode = NULL; 2371 atomic_set(&devr->x1->usecnt, 0); 2372 mutex_init(&devr->x1->tgt_qp_mutex); 2373 INIT_LIST_HEAD(&devr->x1->tgt_qp_list); 2374 2375 memset(&attr, 0, sizeof(attr)); 2376 attr.attr.max_sge = 1; 2377 attr.attr.max_wr = 1; 2378 attr.srq_type = IB_SRQT_XRC; 2379 attr.ext.xrc.cq = devr->c0; 2380 attr.ext.xrc.xrcd = devr->x0; 2381 2382 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL); 2383 if (IS_ERR(devr->s0)) { 2384 ret = PTR_ERR(devr->s0); 2385 goto error4; 2386 } 2387 devr->s0->device = &dev->ib_dev; 2388 devr->s0->pd = devr->p0; 2389 devr->s0->uobject = NULL; 2390 devr->s0->event_handler = NULL; 2391 devr->s0->srq_context = NULL; 2392 devr->s0->srq_type = IB_SRQT_XRC; 2393 devr->s0->ext.xrc.xrcd = devr->x0; 2394 devr->s0->ext.xrc.cq = devr->c0; 2395 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt); 2396 atomic_inc(&devr->s0->ext.xrc.cq->usecnt); 2397 atomic_inc(&devr->p0->usecnt); 2398 atomic_set(&devr->s0->usecnt, 0); 2399 2400 memset(&attr, 0, sizeof(attr)); 2401 attr.attr.max_sge = 1; 2402 attr.attr.max_wr = 1; 2403 attr.srq_type = IB_SRQT_BASIC; 2404 devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL); 2405 if (IS_ERR(devr->s1)) { 2406 ret = PTR_ERR(devr->s1); 2407 goto error5; 2408 } 2409 devr->s1->device = &dev->ib_dev; 2410 devr->s1->pd = devr->p0; 2411 devr->s1->uobject = NULL; 2412 devr->s1->event_handler = NULL; 2413 devr->s1->srq_context = NULL; 2414 devr->s1->srq_type = IB_SRQT_BASIC; 2415 devr->s1->ext.xrc.cq = devr->c0; 2416 atomic_inc(&devr->p0->usecnt); 2417 atomic_set(&devr->s0->usecnt, 0); 2418 2419 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) { 2420 INIT_WORK(&devr->ports[port].pkey_change_work, 2421 pkey_change_handler); 2422 devr->ports[port].devr = devr; 2423 } 2424 2425 return 0; 2426 2427 error5: 2428 mlx5_ib_destroy_srq(devr->s0); 2429 error4: 2430 mlx5_ib_dealloc_xrcd(devr->x1); 2431 error3: 2432 mlx5_ib_dealloc_xrcd(devr->x0); 2433 error2: 2434 mlx5_ib_destroy_cq(devr->c0); 2435 error1: 2436 mlx5_ib_dealloc_pd(devr->p0); 2437 error0: 2438 return ret; 2439 } 2440 2441 static void destroy_dev_resources(struct mlx5_ib_resources *devr) 2442 { 2443 struct mlx5_ib_dev *dev = 2444 container_of(devr, struct mlx5_ib_dev, devr); 2445 int port; 2446 2447 mlx5_ib_destroy_srq(devr->s1); 2448 mlx5_ib_destroy_srq(devr->s0); 2449 mlx5_ib_dealloc_xrcd(devr->x0); 2450 mlx5_ib_dealloc_xrcd(devr->x1); 2451 mlx5_ib_destroy_cq(devr->c0); 2452 mlx5_ib_dealloc_pd(devr->p0); 2453 2454 /* Make sure no change P_Key work items are still executing */ 2455 for (port = 0; port < dev->num_ports; ++port) 2456 cancel_work_sync(&devr->ports[port].pkey_change_work); 2457 } 2458 2459 static u32 get_core_cap_flags(struct ib_device *ibdev) 2460 { 2461 struct mlx5_ib_dev *dev = to_mdev(ibdev); 2462 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1); 2463 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type); 2464 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version); 2465 u32 ret = 0; 2466 2467 if (ll == IB_LINK_LAYER_INFINIBAND) 2468 return RDMA_CORE_PORT_IBA_IB; 2469 2470 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP)) 2471 return 0; 2472 2473 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP)) 2474 return 0; 2475 2476 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP) 2477 ret |= RDMA_CORE_PORT_IBA_ROCE; 2478 2479 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP) 2480 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2481 2482 return ret; 2483 } 2484 2485 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num, 2486 struct ib_port_immutable *immutable) 2487 { 2488 struct ib_port_attr attr; 2489 int err; 2490 2491 err = mlx5_ib_query_port(ibdev, port_num, &attr); 2492 if (err) 2493 return err; 2494 2495 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2496 immutable->gid_tbl_len = attr.gid_tbl_len; 2497 immutable->core_cap_flags = get_core_cap_flags(ibdev); 2498 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2499 2500 return 0; 2501 } 2502 2503 static void get_dev_fw_str(struct ib_device *ibdev, char *str, 2504 size_t str_len) 2505 { 2506 struct mlx5_ib_dev *dev = 2507 container_of(ibdev, struct mlx5_ib_dev, ib_dev); 2508 snprintf(str, str_len, "%d.%d.%04d", fw_rev_maj(dev->mdev), 2509 fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev)); 2510 } 2511 2512 static int mlx5_enable_roce(struct mlx5_ib_dev *dev) 2513 { 2514 int err; 2515 2516 dev->roce.nb.notifier_call = mlx5_netdev_event; 2517 err = register_netdevice_notifier(&dev->roce.nb); 2518 if (err) 2519 return err; 2520 2521 err = mlx5_nic_vport_enable_roce(dev->mdev); 2522 if (err) 2523 goto err_unregister_netdevice_notifier; 2524 2525 return 0; 2526 2527 err_unregister_netdevice_notifier: 2528 unregister_netdevice_notifier(&dev->roce.nb); 2529 return err; 2530 } 2531 2532 static void mlx5_disable_roce(struct mlx5_ib_dev *dev) 2533 { 2534 mlx5_nic_vport_disable_roce(dev->mdev); 2535 unregister_netdevice_notifier(&dev->roce.nb); 2536 } 2537 2538 static void mlx5_ib_dealloc_q_counters(struct mlx5_ib_dev *dev) 2539 { 2540 unsigned int i; 2541 2542 for (i = 0; i < dev->num_ports; i++) 2543 mlx5_core_dealloc_q_counter(dev->mdev, 2544 dev->port[i].q_cnt_id); 2545 } 2546 2547 static int mlx5_ib_alloc_q_counters(struct mlx5_ib_dev *dev) 2548 { 2549 int i; 2550 int ret; 2551 2552 for (i = 0; i < dev->num_ports; i++) { 2553 ret = mlx5_core_alloc_q_counter(dev->mdev, 2554 &dev->port[i].q_cnt_id); 2555 if (ret) { 2556 mlx5_ib_warn(dev, 2557 "couldn't allocate queue counter for port %d, err %d\n", 2558 i + 1, ret); 2559 goto dealloc_counters; 2560 } 2561 } 2562 2563 return 0; 2564 2565 dealloc_counters: 2566 while (--i >= 0) 2567 mlx5_core_dealloc_q_counter(dev->mdev, 2568 dev->port[i].q_cnt_id); 2569 2570 return ret; 2571 } 2572 2573 static const char * const names[] = { 2574 "rx_write_requests", 2575 "rx_read_requests", 2576 "rx_atomic_requests", 2577 "out_of_buffer", 2578 "out_of_sequence", 2579 "duplicate_request", 2580 "rnr_nak_retry_err", 2581 "packet_seq_err", 2582 "implied_nak_seq_err", 2583 "local_ack_timeout_err", 2584 }; 2585 2586 static const size_t stats_offsets[] = { 2587 MLX5_BYTE_OFF(query_q_counter_out, rx_write_requests), 2588 MLX5_BYTE_OFF(query_q_counter_out, rx_read_requests), 2589 MLX5_BYTE_OFF(query_q_counter_out, rx_atomic_requests), 2590 MLX5_BYTE_OFF(query_q_counter_out, out_of_buffer), 2591 MLX5_BYTE_OFF(query_q_counter_out, out_of_sequence), 2592 MLX5_BYTE_OFF(query_q_counter_out, duplicate_request), 2593 MLX5_BYTE_OFF(query_q_counter_out, rnr_nak_retry_err), 2594 MLX5_BYTE_OFF(query_q_counter_out, packet_seq_err), 2595 MLX5_BYTE_OFF(query_q_counter_out, implied_nak_seq_err), 2596 MLX5_BYTE_OFF(query_q_counter_out, local_ack_timeout_err), 2597 }; 2598 2599 static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev, 2600 u8 port_num) 2601 { 2602 BUILD_BUG_ON(ARRAY_SIZE(names) != ARRAY_SIZE(stats_offsets)); 2603 2604 /* We support only per port stats */ 2605 if (port_num == 0) 2606 return NULL; 2607 2608 return rdma_alloc_hw_stats_struct(names, ARRAY_SIZE(names), 2609 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2610 } 2611 2612 static int mlx5_ib_get_hw_stats(struct ib_device *ibdev, 2613 struct rdma_hw_stats *stats, 2614 u8 port, int index) 2615 { 2616 struct mlx5_ib_dev *dev = to_mdev(ibdev); 2617 int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out); 2618 void *out; 2619 __be32 val; 2620 int ret; 2621 int i; 2622 2623 if (!port || !stats) 2624 return -ENOSYS; 2625 2626 out = mlx5_vzalloc(outlen); 2627 if (!out) 2628 return -ENOMEM; 2629 2630 ret = mlx5_core_query_q_counter(dev->mdev, 2631 dev->port[port - 1].q_cnt_id, 0, 2632 out, outlen); 2633 if (ret) 2634 goto free; 2635 2636 for (i = 0; i < ARRAY_SIZE(names); i++) { 2637 val = *(__be32 *)(out + stats_offsets[i]); 2638 stats->value[i] = (u64)be32_to_cpu(val); 2639 } 2640 free: 2641 kvfree(out); 2642 return ARRAY_SIZE(names); 2643 } 2644 2645 static void *mlx5_ib_add(struct mlx5_core_dev *mdev) 2646 { 2647 struct mlx5_ib_dev *dev; 2648 enum rdma_link_layer ll; 2649 int port_type_cap; 2650 int err; 2651 int i; 2652 2653 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 2654 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 2655 2656 if ((ll == IB_LINK_LAYER_ETHERNET) && !MLX5_CAP_GEN(mdev, roce)) 2657 return NULL; 2658 2659 printk_once(KERN_INFO "%s", mlx5_version); 2660 2661 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev)); 2662 if (!dev) 2663 return NULL; 2664 2665 dev->mdev = mdev; 2666 2667 dev->port = kcalloc(MLX5_CAP_GEN(mdev, num_ports), sizeof(*dev->port), 2668 GFP_KERNEL); 2669 if (!dev->port) 2670 goto err_dealloc; 2671 2672 rwlock_init(&dev->roce.netdev_lock); 2673 err = get_port_caps(dev); 2674 if (err) 2675 goto err_free_port; 2676 2677 if (mlx5_use_mad_ifc(dev)) 2678 get_ext_port_caps(dev); 2679 2680 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock); 2681 2682 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX); 2683 dev->ib_dev.owner = THIS_MODULE; 2684 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 2685 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */; 2686 dev->num_ports = MLX5_CAP_GEN(mdev, num_ports); 2687 dev->ib_dev.phys_port_cnt = dev->num_ports; 2688 dev->ib_dev.num_comp_vectors = 2689 dev->mdev->priv.eq_table.num_comp_vectors; 2690 dev->ib_dev.dma_device = &mdev->pdev->dev; 2691 2692 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION; 2693 dev->ib_dev.uverbs_cmd_mask = 2694 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2695 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2696 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2697 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2698 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2699 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2700 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2701 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2702 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2703 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2704 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2705 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2706 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2707 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2708 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2709 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2710 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2711 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2712 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2713 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2714 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2715 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2716 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2717 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2718 dev->ib_dev.uverbs_ex_cmd_mask = 2719 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | 2720 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | 2721 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP); 2722 2723 dev->ib_dev.query_device = mlx5_ib_query_device; 2724 dev->ib_dev.query_port = mlx5_ib_query_port; 2725 dev->ib_dev.get_link_layer = mlx5_ib_port_link_layer; 2726 if (ll == IB_LINK_LAYER_ETHERNET) 2727 dev->ib_dev.get_netdev = mlx5_ib_get_netdev; 2728 dev->ib_dev.query_gid = mlx5_ib_query_gid; 2729 dev->ib_dev.add_gid = mlx5_ib_add_gid; 2730 dev->ib_dev.del_gid = mlx5_ib_del_gid; 2731 dev->ib_dev.query_pkey = mlx5_ib_query_pkey; 2732 dev->ib_dev.modify_device = mlx5_ib_modify_device; 2733 dev->ib_dev.modify_port = mlx5_ib_modify_port; 2734 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext; 2735 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext; 2736 dev->ib_dev.mmap = mlx5_ib_mmap; 2737 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd; 2738 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd; 2739 dev->ib_dev.create_ah = mlx5_ib_create_ah; 2740 dev->ib_dev.query_ah = mlx5_ib_query_ah; 2741 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah; 2742 dev->ib_dev.create_srq = mlx5_ib_create_srq; 2743 dev->ib_dev.modify_srq = mlx5_ib_modify_srq; 2744 dev->ib_dev.query_srq = mlx5_ib_query_srq; 2745 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq; 2746 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv; 2747 dev->ib_dev.create_qp = mlx5_ib_create_qp; 2748 dev->ib_dev.modify_qp = mlx5_ib_modify_qp; 2749 dev->ib_dev.query_qp = mlx5_ib_query_qp; 2750 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp; 2751 dev->ib_dev.post_send = mlx5_ib_post_send; 2752 dev->ib_dev.post_recv = mlx5_ib_post_recv; 2753 dev->ib_dev.create_cq = mlx5_ib_create_cq; 2754 dev->ib_dev.modify_cq = mlx5_ib_modify_cq; 2755 dev->ib_dev.resize_cq = mlx5_ib_resize_cq; 2756 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq; 2757 dev->ib_dev.poll_cq = mlx5_ib_poll_cq; 2758 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq; 2759 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr; 2760 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr; 2761 dev->ib_dev.rereg_user_mr = mlx5_ib_rereg_user_mr; 2762 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr; 2763 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach; 2764 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach; 2765 dev->ib_dev.process_mad = mlx5_ib_process_mad; 2766 dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr; 2767 dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg; 2768 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status; 2769 dev->ib_dev.get_port_immutable = mlx5_port_immutable; 2770 dev->ib_dev.get_dev_fw_str = get_dev_fw_str; 2771 if (mlx5_core_is_pf(mdev)) { 2772 dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config; 2773 dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state; 2774 dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats; 2775 dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid; 2776 } 2777 2778 dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext; 2779 2780 mlx5_ib_internal_fill_odp_caps(dev); 2781 2782 if (MLX5_CAP_GEN(mdev, imaicl)) { 2783 dev->ib_dev.alloc_mw = mlx5_ib_alloc_mw; 2784 dev->ib_dev.dealloc_mw = mlx5_ib_dealloc_mw; 2785 dev->ib_dev.uverbs_cmd_mask |= 2786 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2787 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2788 } 2789 2790 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt) && 2791 MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) { 2792 dev->ib_dev.get_hw_stats = mlx5_ib_get_hw_stats; 2793 dev->ib_dev.alloc_hw_stats = mlx5_ib_alloc_hw_stats; 2794 } 2795 2796 if (MLX5_CAP_GEN(mdev, xrc)) { 2797 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd; 2798 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd; 2799 dev->ib_dev.uverbs_cmd_mask |= 2800 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2801 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2802 } 2803 2804 if (mlx5_ib_port_link_layer(&dev->ib_dev, 1) == 2805 IB_LINK_LAYER_ETHERNET) { 2806 dev->ib_dev.create_flow = mlx5_ib_create_flow; 2807 dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow; 2808 dev->ib_dev.create_wq = mlx5_ib_create_wq; 2809 dev->ib_dev.modify_wq = mlx5_ib_modify_wq; 2810 dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq; 2811 dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table; 2812 dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table; 2813 dev->ib_dev.uverbs_ex_cmd_mask |= 2814 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2815 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW) | 2816 (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) | 2817 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) | 2818 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) | 2819 (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) | 2820 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL); 2821 } 2822 err = init_node_data(dev); 2823 if (err) 2824 goto err_dealloc; 2825 2826 mutex_init(&dev->flow_db.lock); 2827 mutex_init(&dev->cap_mask_mutex); 2828 INIT_LIST_HEAD(&dev->qp_list); 2829 spin_lock_init(&dev->reset_flow_resource_lock); 2830 2831 if (ll == IB_LINK_LAYER_ETHERNET) { 2832 err = mlx5_enable_roce(dev); 2833 if (err) 2834 goto err_dealloc; 2835 } 2836 2837 err = create_dev_resources(&dev->devr); 2838 if (err) 2839 goto err_disable_roce; 2840 2841 err = mlx5_ib_odp_init_one(dev); 2842 if (err) 2843 goto err_rsrc; 2844 2845 err = mlx5_ib_alloc_q_counters(dev); 2846 if (err) 2847 goto err_odp; 2848 2849 err = ib_register_device(&dev->ib_dev, NULL); 2850 if (err) 2851 goto err_q_cnt; 2852 2853 err = create_umr_res(dev); 2854 if (err) 2855 goto err_dev; 2856 2857 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) { 2858 err = device_create_file(&dev->ib_dev.dev, 2859 mlx5_class_attributes[i]); 2860 if (err) 2861 goto err_umrc; 2862 } 2863 2864 dev->ib_active = true; 2865 2866 return dev; 2867 2868 err_umrc: 2869 destroy_umrc_res(dev); 2870 2871 err_dev: 2872 ib_unregister_device(&dev->ib_dev); 2873 2874 err_q_cnt: 2875 mlx5_ib_dealloc_q_counters(dev); 2876 2877 err_odp: 2878 mlx5_ib_odp_remove_one(dev); 2879 2880 err_rsrc: 2881 destroy_dev_resources(&dev->devr); 2882 2883 err_disable_roce: 2884 if (ll == IB_LINK_LAYER_ETHERNET) 2885 mlx5_disable_roce(dev); 2886 2887 err_free_port: 2888 kfree(dev->port); 2889 2890 err_dealloc: 2891 ib_dealloc_device((struct ib_device *)dev); 2892 2893 return NULL; 2894 } 2895 2896 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context) 2897 { 2898 struct mlx5_ib_dev *dev = context; 2899 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1); 2900 2901 ib_unregister_device(&dev->ib_dev); 2902 mlx5_ib_dealloc_q_counters(dev); 2903 destroy_umrc_res(dev); 2904 mlx5_ib_odp_remove_one(dev); 2905 destroy_dev_resources(&dev->devr); 2906 if (ll == IB_LINK_LAYER_ETHERNET) 2907 mlx5_disable_roce(dev); 2908 kfree(dev->port); 2909 ib_dealloc_device(&dev->ib_dev); 2910 } 2911 2912 static struct mlx5_interface mlx5_ib_interface = { 2913 .add = mlx5_ib_add, 2914 .remove = mlx5_ib_remove, 2915 .event = mlx5_ib_event, 2916 .protocol = MLX5_INTERFACE_PROTOCOL_IB, 2917 }; 2918 2919 static int __init mlx5_ib_init(void) 2920 { 2921 int err; 2922 2923 if (deprecated_prof_sel != 2) 2924 pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n"); 2925 2926 err = mlx5_ib_odp_init(); 2927 if (err) 2928 return err; 2929 2930 err = mlx5_register_interface(&mlx5_ib_interface); 2931 if (err) 2932 goto clean_odp; 2933 2934 return err; 2935 2936 clean_odp: 2937 mlx5_ib_odp_cleanup(); 2938 return err; 2939 } 2940 2941 static void __exit mlx5_ib_cleanup(void) 2942 { 2943 mlx5_unregister_interface(&mlx5_ib_interface); 2944 mlx5_ib_odp_cleanup(); 2945 } 2946 2947 module_init(mlx5_ib_init); 2948 module_exit(mlx5_ib_cleanup); 2949