1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/errno.h> 38 #include <linux/netdevice.h> 39 #include <linux/inetdevice.h> 40 #include <linux/rtnetlink.h> 41 #include <linux/if_vlan.h> 42 43 #include <rdma/ib_smi.h> 44 #include <rdma/ib_user_verbs.h> 45 #include <rdma/ib_addr.h> 46 47 #include <linux/mlx4/driver.h> 48 #include <linux/mlx4/cmd.h> 49 50 #include "mlx4_ib.h" 51 #include "user.h" 52 53 #define DRV_NAME MLX4_IB_DRV_NAME 54 #define DRV_VERSION "1.0" 55 #define DRV_RELDATE "April 4, 2008" 56 57 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 58 59 MODULE_AUTHOR("Roland Dreier"); 60 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 61 MODULE_LICENSE("Dual BSD/GPL"); 62 MODULE_VERSION(DRV_VERSION); 63 64 int mlx4_ib_sm_guid_assign = 1; 65 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 66 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)"); 67 68 static const char mlx4_ib_version[] = 69 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 70 DRV_VERSION " (" DRV_RELDATE ")\n"; 71 72 struct update_gid_work { 73 struct work_struct work; 74 union ib_gid gids[128]; 75 struct mlx4_ib_dev *dev; 76 int port; 77 }; 78 79 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 80 81 static struct workqueue_struct *wq; 82 83 static void init_query_mad(struct ib_smp *mad) 84 { 85 mad->base_version = 1; 86 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 87 mad->class_version = 1; 88 mad->method = IB_MGMT_METHOD_GET; 89 } 90 91 static union ib_gid zgid; 92 93 static int check_flow_steering_support(struct mlx4_dev *dev) 94 { 95 int ib_num_ports = 0; 96 int i; 97 98 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 99 ib_num_ports++; 100 101 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { 102 if (ib_num_ports || mlx4_is_mfunc(dev)) { 103 pr_warn("Device managed flow steering is unavailable " 104 "for IB ports or in multifunction env.\n"); 105 return 0; 106 } 107 return 1; 108 } 109 return 0; 110 } 111 112 static int mlx4_ib_query_device(struct ib_device *ibdev, 113 struct ib_device_attr *props) 114 { 115 struct mlx4_ib_dev *dev = to_mdev(ibdev); 116 struct ib_smp *in_mad = NULL; 117 struct ib_smp *out_mad = NULL; 118 int err = -ENOMEM; 119 120 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 121 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 122 if (!in_mad || !out_mad) 123 goto out; 124 125 init_query_mad(in_mad); 126 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 127 128 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 129 1, NULL, NULL, in_mad, out_mad); 130 if (err) 131 goto out; 132 133 memset(props, 0, sizeof *props); 134 135 props->fw_ver = dev->dev->caps.fw_ver; 136 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 137 IB_DEVICE_PORT_ACTIVE_EVENT | 138 IB_DEVICE_SYS_IMAGE_GUID | 139 IB_DEVICE_RC_RNR_NAK_GEN | 140 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 141 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 142 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 143 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 144 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 145 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 146 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 147 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 148 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 149 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 150 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 151 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) 152 props->device_cap_flags |= IB_DEVICE_UD_TSO; 153 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 154 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 155 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 156 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 157 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 158 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 159 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 160 props->device_cap_flags |= IB_DEVICE_XRC; 161 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 162 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 163 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 164 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 165 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 166 else 167 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 168 if (check_flow_steering_support(dev->dev)) 169 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 170 } 171 172 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 173 0xffffff; 174 props->vendor_part_id = dev->dev->pdev->device; 175 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 176 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 177 178 props->max_mr_size = ~0ull; 179 props->page_size_cap = dev->dev->caps.page_size_cap; 180 props->max_qp = dev->dev->quotas.qp; 181 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 182 props->max_sge = min(dev->dev->caps.max_sq_sg, 183 dev->dev->caps.max_rq_sg); 184 props->max_cq = dev->dev->quotas.cq; 185 props->max_cqe = dev->dev->caps.max_cqes; 186 props->max_mr = dev->dev->quotas.mpt; 187 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 188 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 189 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 190 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 191 props->max_srq = dev->dev->quotas.srq; 192 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 193 props->max_srq_sge = dev->dev->caps.max_srq_sge; 194 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 195 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 196 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 197 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 198 props->masked_atomic_cap = props->atomic_cap; 199 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 200 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 201 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 202 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 203 props->max_mcast_grp; 204 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 205 206 out: 207 kfree(in_mad); 208 kfree(out_mad); 209 210 return err; 211 } 212 213 static enum rdma_link_layer 214 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 215 { 216 struct mlx4_dev *dev = to_mdev(device)->dev; 217 218 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 219 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 220 } 221 222 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 223 struct ib_port_attr *props, int netw_view) 224 { 225 struct ib_smp *in_mad = NULL; 226 struct ib_smp *out_mad = NULL; 227 int ext_active_speed; 228 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 229 int err = -ENOMEM; 230 231 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 232 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 233 if (!in_mad || !out_mad) 234 goto out; 235 236 init_query_mad(in_mad); 237 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 238 in_mad->attr_mod = cpu_to_be32(port); 239 240 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 241 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 242 243 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 244 in_mad, out_mad); 245 if (err) 246 goto out; 247 248 249 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 250 props->lmc = out_mad->data[34] & 0x7; 251 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 252 props->sm_sl = out_mad->data[36] & 0xf; 253 props->state = out_mad->data[32] & 0xf; 254 props->phys_state = out_mad->data[33] >> 4; 255 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 256 if (netw_view) 257 props->gid_tbl_len = out_mad->data[50]; 258 else 259 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 260 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 261 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 262 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 263 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 264 props->active_width = out_mad->data[31] & 0xf; 265 props->active_speed = out_mad->data[35] >> 4; 266 props->max_mtu = out_mad->data[41] & 0xf; 267 props->active_mtu = out_mad->data[36] >> 4; 268 props->subnet_timeout = out_mad->data[51] & 0x1f; 269 props->max_vl_num = out_mad->data[37] >> 4; 270 props->init_type_reply = out_mad->data[41] >> 4; 271 272 /* Check if extended speeds (EDR/FDR/...) are supported */ 273 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 274 ext_active_speed = out_mad->data[62] >> 4; 275 276 switch (ext_active_speed) { 277 case 1: 278 props->active_speed = IB_SPEED_FDR; 279 break; 280 case 2: 281 props->active_speed = IB_SPEED_EDR; 282 break; 283 } 284 } 285 286 /* If reported active speed is QDR, check if is FDR-10 */ 287 if (props->active_speed == IB_SPEED_QDR) { 288 init_query_mad(in_mad); 289 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 290 in_mad->attr_mod = cpu_to_be32(port); 291 292 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 293 NULL, NULL, in_mad, out_mad); 294 if (err) 295 goto out; 296 297 /* Checking LinkSpeedActive for FDR-10 */ 298 if (out_mad->data[15] & 0x1) 299 props->active_speed = IB_SPEED_FDR10; 300 } 301 302 /* Avoid wrong speed value returned by FW if the IB link is down. */ 303 if (props->state == IB_PORT_DOWN) 304 props->active_speed = IB_SPEED_SDR; 305 306 out: 307 kfree(in_mad); 308 kfree(out_mad); 309 return err; 310 } 311 312 static u8 state_to_phys_state(enum ib_port_state state) 313 { 314 return state == IB_PORT_ACTIVE ? 5 : 3; 315 } 316 317 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 318 struct ib_port_attr *props, int netw_view) 319 { 320 321 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 322 struct mlx4_ib_iboe *iboe = &mdev->iboe; 323 struct net_device *ndev; 324 enum ib_mtu tmp; 325 struct mlx4_cmd_mailbox *mailbox; 326 int err = 0; 327 328 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 329 if (IS_ERR(mailbox)) 330 return PTR_ERR(mailbox); 331 332 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 333 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 334 MLX4_CMD_WRAPPED); 335 if (err) 336 goto out; 337 338 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 339 IB_WIDTH_4X : IB_WIDTH_1X; 340 props->active_speed = IB_SPEED_QDR; 341 props->port_cap_flags = IB_PORT_CM_SUP; 342 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 343 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 344 props->pkey_tbl_len = 1; 345 props->max_mtu = IB_MTU_4096; 346 props->max_vl_num = 2; 347 props->state = IB_PORT_DOWN; 348 props->phys_state = state_to_phys_state(props->state); 349 props->active_mtu = IB_MTU_256; 350 spin_lock(&iboe->lock); 351 ndev = iboe->netdevs[port - 1]; 352 if (!ndev) 353 goto out_unlock; 354 355 tmp = iboe_get_mtu(ndev->mtu); 356 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 357 358 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 359 IB_PORT_ACTIVE : IB_PORT_DOWN; 360 props->phys_state = state_to_phys_state(props->state); 361 out_unlock: 362 spin_unlock(&iboe->lock); 363 out: 364 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 365 return err; 366 } 367 368 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 369 struct ib_port_attr *props, int netw_view) 370 { 371 int err; 372 373 memset(props, 0, sizeof *props); 374 375 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 376 ib_link_query_port(ibdev, port, props, netw_view) : 377 eth_link_query_port(ibdev, port, props, netw_view); 378 379 return err; 380 } 381 382 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 383 struct ib_port_attr *props) 384 { 385 /* returns host view */ 386 return __mlx4_ib_query_port(ibdev, port, props, 0); 387 } 388 389 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 390 union ib_gid *gid, int netw_view) 391 { 392 struct ib_smp *in_mad = NULL; 393 struct ib_smp *out_mad = NULL; 394 int err = -ENOMEM; 395 struct mlx4_ib_dev *dev = to_mdev(ibdev); 396 int clear = 0; 397 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 398 399 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 400 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 401 if (!in_mad || !out_mad) 402 goto out; 403 404 init_query_mad(in_mad); 405 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 406 in_mad->attr_mod = cpu_to_be32(port); 407 408 if (mlx4_is_mfunc(dev->dev) && netw_view) 409 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 410 411 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 412 if (err) 413 goto out; 414 415 memcpy(gid->raw, out_mad->data + 8, 8); 416 417 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 418 if (index) { 419 /* For any index > 0, return the null guid */ 420 err = 0; 421 clear = 1; 422 goto out; 423 } 424 } 425 426 init_query_mad(in_mad); 427 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 428 in_mad->attr_mod = cpu_to_be32(index / 8); 429 430 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 431 NULL, NULL, in_mad, out_mad); 432 if (err) 433 goto out; 434 435 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 436 437 out: 438 if (clear) 439 memset(gid->raw + 8, 0, 8); 440 kfree(in_mad); 441 kfree(out_mad); 442 return err; 443 } 444 445 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 446 union ib_gid *gid) 447 { 448 struct mlx4_ib_dev *dev = to_mdev(ibdev); 449 450 *gid = dev->iboe.gid_table[port - 1][index]; 451 452 return 0; 453 } 454 455 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 456 union ib_gid *gid) 457 { 458 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 459 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 460 else 461 return iboe_query_gid(ibdev, port, index, gid); 462 } 463 464 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 465 u16 *pkey, int netw_view) 466 { 467 struct ib_smp *in_mad = NULL; 468 struct ib_smp *out_mad = NULL; 469 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 470 int err = -ENOMEM; 471 472 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 473 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 474 if (!in_mad || !out_mad) 475 goto out; 476 477 init_query_mad(in_mad); 478 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 479 in_mad->attr_mod = cpu_to_be32(index / 32); 480 481 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 482 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 483 484 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 485 in_mad, out_mad); 486 if (err) 487 goto out; 488 489 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 490 491 out: 492 kfree(in_mad); 493 kfree(out_mad); 494 return err; 495 } 496 497 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 498 { 499 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 500 } 501 502 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 503 struct ib_device_modify *props) 504 { 505 struct mlx4_cmd_mailbox *mailbox; 506 unsigned long flags; 507 508 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 509 return -EOPNOTSUPP; 510 511 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 512 return 0; 513 514 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 515 return -EOPNOTSUPP; 516 517 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 518 memcpy(ibdev->node_desc, props->node_desc, 64); 519 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 520 521 /* 522 * If possible, pass node desc to FW, so it can generate 523 * a 144 trap. If cmd fails, just ignore. 524 */ 525 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 526 if (IS_ERR(mailbox)) 527 return 0; 528 529 memcpy(mailbox->buf, props->node_desc, 64); 530 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 531 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 532 533 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 534 535 return 0; 536 } 537 538 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 539 u32 cap_mask) 540 { 541 struct mlx4_cmd_mailbox *mailbox; 542 int err; 543 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 544 545 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 546 if (IS_ERR(mailbox)) 547 return PTR_ERR(mailbox); 548 549 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 550 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 551 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 552 } else { 553 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 554 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 555 } 556 557 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, 558 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 559 560 mlx4_free_cmd_mailbox(dev->dev, mailbox); 561 return err; 562 } 563 564 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 565 struct ib_port_modify *props) 566 { 567 struct ib_port_attr attr; 568 u32 cap_mask; 569 int err; 570 571 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 572 573 err = mlx4_ib_query_port(ibdev, port, &attr); 574 if (err) 575 goto out; 576 577 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 578 ~props->clr_port_cap_mask; 579 580 err = mlx4_SET_PORT(to_mdev(ibdev), port, 581 !!(mask & IB_PORT_RESET_QKEY_CNTR), 582 cap_mask); 583 584 out: 585 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 586 return err; 587 } 588 589 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 590 struct ib_udata *udata) 591 { 592 struct mlx4_ib_dev *dev = to_mdev(ibdev); 593 struct mlx4_ib_ucontext *context; 594 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 595 struct mlx4_ib_alloc_ucontext_resp resp; 596 int err; 597 598 if (!dev->ib_active) 599 return ERR_PTR(-EAGAIN); 600 601 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 602 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 603 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 604 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 605 } else { 606 resp.dev_caps = dev->dev->caps.userspace_caps; 607 resp.qp_tab_size = dev->dev->caps.num_qps; 608 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 609 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 610 resp.cqe_size = dev->dev->caps.cqe_size; 611 } 612 613 context = kmalloc(sizeof *context, GFP_KERNEL); 614 if (!context) 615 return ERR_PTR(-ENOMEM); 616 617 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 618 if (err) { 619 kfree(context); 620 return ERR_PTR(err); 621 } 622 623 INIT_LIST_HEAD(&context->db_page_list); 624 mutex_init(&context->db_page_mutex); 625 626 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 627 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 628 else 629 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 630 631 if (err) { 632 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 633 kfree(context); 634 return ERR_PTR(-EFAULT); 635 } 636 637 return &context->ibucontext; 638 } 639 640 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 641 { 642 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 643 644 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 645 kfree(context); 646 647 return 0; 648 } 649 650 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 651 { 652 struct mlx4_ib_dev *dev = to_mdev(context->device); 653 654 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 655 return -EINVAL; 656 657 if (vma->vm_pgoff == 0) { 658 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 659 660 if (io_remap_pfn_range(vma, vma->vm_start, 661 to_mucontext(context)->uar.pfn, 662 PAGE_SIZE, vma->vm_page_prot)) 663 return -EAGAIN; 664 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 665 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 666 667 if (io_remap_pfn_range(vma, vma->vm_start, 668 to_mucontext(context)->uar.pfn + 669 dev->dev->caps.num_uars, 670 PAGE_SIZE, vma->vm_page_prot)) 671 return -EAGAIN; 672 } else 673 return -EINVAL; 674 675 return 0; 676 } 677 678 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 679 struct ib_ucontext *context, 680 struct ib_udata *udata) 681 { 682 struct mlx4_ib_pd *pd; 683 int err; 684 685 pd = kmalloc(sizeof *pd, GFP_KERNEL); 686 if (!pd) 687 return ERR_PTR(-ENOMEM); 688 689 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 690 if (err) { 691 kfree(pd); 692 return ERR_PTR(err); 693 } 694 695 if (context) 696 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 697 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 698 kfree(pd); 699 return ERR_PTR(-EFAULT); 700 } 701 702 return &pd->ibpd; 703 } 704 705 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 706 { 707 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 708 kfree(pd); 709 710 return 0; 711 } 712 713 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 714 struct ib_ucontext *context, 715 struct ib_udata *udata) 716 { 717 struct mlx4_ib_xrcd *xrcd; 718 int err; 719 720 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 721 return ERR_PTR(-ENOSYS); 722 723 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 724 if (!xrcd) 725 return ERR_PTR(-ENOMEM); 726 727 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 728 if (err) 729 goto err1; 730 731 xrcd->pd = ib_alloc_pd(ibdev); 732 if (IS_ERR(xrcd->pd)) { 733 err = PTR_ERR(xrcd->pd); 734 goto err2; 735 } 736 737 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 738 if (IS_ERR(xrcd->cq)) { 739 err = PTR_ERR(xrcd->cq); 740 goto err3; 741 } 742 743 return &xrcd->ibxrcd; 744 745 err3: 746 ib_dealloc_pd(xrcd->pd); 747 err2: 748 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 749 err1: 750 kfree(xrcd); 751 return ERR_PTR(err); 752 } 753 754 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 755 { 756 ib_destroy_cq(to_mxrcd(xrcd)->cq); 757 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 758 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 759 kfree(xrcd); 760 761 return 0; 762 } 763 764 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 765 { 766 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 767 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 768 struct mlx4_ib_gid_entry *ge; 769 770 ge = kzalloc(sizeof *ge, GFP_KERNEL); 771 if (!ge) 772 return -ENOMEM; 773 774 ge->gid = *gid; 775 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 776 ge->port = mqp->port; 777 ge->added = 1; 778 } 779 780 mutex_lock(&mqp->mutex); 781 list_add_tail(&ge->list, &mqp->gid_list); 782 mutex_unlock(&mqp->mutex); 783 784 return 0; 785 } 786 787 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 788 union ib_gid *gid) 789 { 790 u8 mac[6]; 791 struct net_device *ndev; 792 int ret = 0; 793 794 if (!mqp->port) 795 return 0; 796 797 spin_lock(&mdev->iboe.lock); 798 ndev = mdev->iboe.netdevs[mqp->port - 1]; 799 if (ndev) 800 dev_hold(ndev); 801 spin_unlock(&mdev->iboe.lock); 802 803 if (ndev) { 804 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 805 rtnl_lock(); 806 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); 807 ret = 1; 808 rtnl_unlock(); 809 dev_put(ndev); 810 } 811 812 return ret; 813 } 814 815 struct mlx4_ib_steering { 816 struct list_head list; 817 u64 reg_id; 818 union ib_gid gid; 819 }; 820 821 static int parse_flow_attr(struct mlx4_dev *dev, 822 union ib_flow_spec *ib_spec, 823 struct _rule_hw *mlx4_spec) 824 { 825 enum mlx4_net_trans_rule_id type; 826 827 switch (ib_spec->type) { 828 case IB_FLOW_SPEC_ETH: 829 type = MLX4_NET_TRANS_RULE_ID_ETH; 830 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 831 ETH_ALEN); 832 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 833 ETH_ALEN); 834 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 835 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 836 break; 837 838 case IB_FLOW_SPEC_IPV4: 839 type = MLX4_NET_TRANS_RULE_ID_IPV4; 840 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 841 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 842 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 843 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 844 break; 845 846 case IB_FLOW_SPEC_TCP: 847 case IB_FLOW_SPEC_UDP: 848 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 849 MLX4_NET_TRANS_RULE_ID_TCP : 850 MLX4_NET_TRANS_RULE_ID_UDP; 851 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 852 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 853 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 854 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 855 break; 856 857 default: 858 return -EINVAL; 859 } 860 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 861 mlx4_hw_rule_sz(dev, type) < 0) 862 return -EINVAL; 863 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 864 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 865 return mlx4_hw_rule_sz(dev, type); 866 } 867 868 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 869 int domain, 870 enum mlx4_net_trans_promisc_mode flow_type, 871 u64 *reg_id) 872 { 873 int ret, i; 874 int size = 0; 875 void *ib_flow; 876 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 877 struct mlx4_cmd_mailbox *mailbox; 878 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 879 880 static const u16 __mlx4_domain[] = { 881 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 882 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 883 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 884 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 885 }; 886 887 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 888 pr_err("Invalid priority value %d\n", flow_attr->priority); 889 return -EINVAL; 890 } 891 892 if (domain >= IB_FLOW_DOMAIN_NUM) { 893 pr_err("Invalid domain value %d\n", domain); 894 return -EINVAL; 895 } 896 897 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 898 return -EINVAL; 899 900 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 901 if (IS_ERR(mailbox)) 902 return PTR_ERR(mailbox); 903 ctrl = mailbox->buf; 904 905 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 906 flow_attr->priority); 907 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 908 ctrl->port = flow_attr->port; 909 ctrl->qpn = cpu_to_be32(qp->qp_num); 910 911 ib_flow = flow_attr + 1; 912 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 913 for (i = 0; i < flow_attr->num_of_specs; i++) { 914 ret = parse_flow_attr(mdev->dev, ib_flow, mailbox->buf + size); 915 if (ret < 0) { 916 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 917 return -EINVAL; 918 } 919 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 920 size += ret; 921 } 922 923 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 924 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 925 MLX4_CMD_NATIVE); 926 if (ret == -ENOMEM) 927 pr_err("mcg table is full. Fail to register network rule.\n"); 928 else if (ret == -ENXIO) 929 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 930 else if (ret) 931 pr_err("Invalid argumant. Fail to register network rule.\n"); 932 933 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 934 return ret; 935 } 936 937 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 938 { 939 int err; 940 err = mlx4_cmd(dev, reg_id, 0, 0, 941 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 942 MLX4_CMD_NATIVE); 943 if (err) 944 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 945 reg_id); 946 return err; 947 } 948 949 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 950 struct ib_flow_attr *flow_attr, 951 int domain) 952 { 953 int err = 0, i = 0; 954 struct mlx4_ib_flow *mflow; 955 enum mlx4_net_trans_promisc_mode type[2]; 956 957 memset(type, 0, sizeof(type)); 958 959 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 960 if (!mflow) { 961 err = -ENOMEM; 962 goto err_free; 963 } 964 965 switch (flow_attr->type) { 966 case IB_FLOW_ATTR_NORMAL: 967 type[0] = MLX4_FS_REGULAR; 968 break; 969 970 case IB_FLOW_ATTR_ALL_DEFAULT: 971 type[0] = MLX4_FS_ALL_DEFAULT; 972 break; 973 974 case IB_FLOW_ATTR_MC_DEFAULT: 975 type[0] = MLX4_FS_MC_DEFAULT; 976 break; 977 978 case IB_FLOW_ATTR_SNIFFER: 979 type[0] = MLX4_FS_UC_SNIFFER; 980 type[1] = MLX4_FS_MC_SNIFFER; 981 break; 982 983 default: 984 err = -EINVAL; 985 goto err_free; 986 } 987 988 while (i < ARRAY_SIZE(type) && type[i]) { 989 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 990 &mflow->reg_id[i]); 991 if (err) 992 goto err_free; 993 i++; 994 } 995 996 return &mflow->ibflow; 997 998 err_free: 999 kfree(mflow); 1000 return ERR_PTR(err); 1001 } 1002 1003 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1004 { 1005 int err, ret = 0; 1006 int i = 0; 1007 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1008 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1009 1010 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) { 1011 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]); 1012 if (err) 1013 ret = err; 1014 i++; 1015 } 1016 1017 kfree(mflow); 1018 return ret; 1019 } 1020 1021 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1022 { 1023 int err; 1024 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1025 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1026 u64 reg_id; 1027 struct mlx4_ib_steering *ib_steering = NULL; 1028 1029 if (mdev->dev->caps.steering_mode == 1030 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1031 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1032 if (!ib_steering) 1033 return -ENOMEM; 1034 } 1035 1036 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1037 !!(mqp->flags & 1038 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1039 MLX4_PROT_IB_IPV6, ®_id); 1040 if (err) 1041 goto err_malloc; 1042 1043 err = add_gid_entry(ibqp, gid); 1044 if (err) 1045 goto err_add; 1046 1047 if (ib_steering) { 1048 memcpy(ib_steering->gid.raw, gid->raw, 16); 1049 ib_steering->reg_id = reg_id; 1050 mutex_lock(&mqp->mutex); 1051 list_add(&ib_steering->list, &mqp->steering_rules); 1052 mutex_unlock(&mqp->mutex); 1053 } 1054 return 0; 1055 1056 err_add: 1057 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1058 MLX4_PROT_IB_IPV6, reg_id); 1059 err_malloc: 1060 kfree(ib_steering); 1061 1062 return err; 1063 } 1064 1065 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1066 { 1067 struct mlx4_ib_gid_entry *ge; 1068 struct mlx4_ib_gid_entry *tmp; 1069 struct mlx4_ib_gid_entry *ret = NULL; 1070 1071 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1072 if (!memcmp(raw, ge->gid.raw, 16)) { 1073 ret = ge; 1074 break; 1075 } 1076 } 1077 1078 return ret; 1079 } 1080 1081 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1082 { 1083 int err; 1084 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1085 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1086 u8 mac[6]; 1087 struct net_device *ndev; 1088 struct mlx4_ib_gid_entry *ge; 1089 u64 reg_id = 0; 1090 1091 if (mdev->dev->caps.steering_mode == 1092 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1093 struct mlx4_ib_steering *ib_steering; 1094 1095 mutex_lock(&mqp->mutex); 1096 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1097 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1098 list_del(&ib_steering->list); 1099 break; 1100 } 1101 } 1102 mutex_unlock(&mqp->mutex); 1103 if (&ib_steering->list == &mqp->steering_rules) { 1104 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1105 return -EINVAL; 1106 } 1107 reg_id = ib_steering->reg_id; 1108 kfree(ib_steering); 1109 } 1110 1111 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1112 MLX4_PROT_IB_IPV6, reg_id); 1113 if (err) 1114 return err; 1115 1116 mutex_lock(&mqp->mutex); 1117 ge = find_gid_entry(mqp, gid->raw); 1118 if (ge) { 1119 spin_lock(&mdev->iboe.lock); 1120 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1121 if (ndev) 1122 dev_hold(ndev); 1123 spin_unlock(&mdev->iboe.lock); 1124 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 1125 if (ndev) { 1126 rtnl_lock(); 1127 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); 1128 rtnl_unlock(); 1129 dev_put(ndev); 1130 } 1131 list_del(&ge->list); 1132 kfree(ge); 1133 } else 1134 pr_warn("could not find mgid entry\n"); 1135 1136 mutex_unlock(&mqp->mutex); 1137 1138 return 0; 1139 } 1140 1141 static int init_node_data(struct mlx4_ib_dev *dev) 1142 { 1143 struct ib_smp *in_mad = NULL; 1144 struct ib_smp *out_mad = NULL; 1145 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1146 int err = -ENOMEM; 1147 1148 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1149 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1150 if (!in_mad || !out_mad) 1151 goto out; 1152 1153 init_query_mad(in_mad); 1154 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1155 if (mlx4_is_master(dev->dev)) 1156 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1157 1158 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1159 if (err) 1160 goto out; 1161 1162 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1163 1164 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1165 1166 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1167 if (err) 1168 goto out; 1169 1170 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1171 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1172 1173 out: 1174 kfree(in_mad); 1175 kfree(out_mad); 1176 return err; 1177 } 1178 1179 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1180 char *buf) 1181 { 1182 struct mlx4_ib_dev *dev = 1183 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1184 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 1185 } 1186 1187 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1188 char *buf) 1189 { 1190 struct mlx4_ib_dev *dev = 1191 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1192 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 1193 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 1194 (int) dev->dev->caps.fw_ver & 0xffff); 1195 } 1196 1197 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1198 char *buf) 1199 { 1200 struct mlx4_ib_dev *dev = 1201 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1202 return sprintf(buf, "%x\n", dev->dev->rev_id); 1203 } 1204 1205 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1206 char *buf) 1207 { 1208 struct mlx4_ib_dev *dev = 1209 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1210 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 1211 dev->dev->board_id); 1212 } 1213 1214 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1215 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1216 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1217 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1218 1219 static struct device_attribute *mlx4_class_attributes[] = { 1220 &dev_attr_hw_rev, 1221 &dev_attr_fw_ver, 1222 &dev_attr_hca_type, 1223 &dev_attr_board_id 1224 }; 1225 1226 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) 1227 { 1228 memcpy(eui, dev->dev_addr, 3); 1229 memcpy(eui + 5, dev->dev_addr + 3, 3); 1230 if (vlan_id < 0x1000) { 1231 eui[3] = vlan_id >> 8; 1232 eui[4] = vlan_id & 0xff; 1233 } else { 1234 eui[3] = 0xff; 1235 eui[4] = 0xfe; 1236 } 1237 eui[0] ^= 2; 1238 } 1239 1240 static void update_gids_task(struct work_struct *work) 1241 { 1242 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1243 struct mlx4_cmd_mailbox *mailbox; 1244 union ib_gid *gids; 1245 int err; 1246 struct mlx4_dev *dev = gw->dev->dev; 1247 1248 mailbox = mlx4_alloc_cmd_mailbox(dev); 1249 if (IS_ERR(mailbox)) { 1250 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1251 return; 1252 } 1253 1254 gids = mailbox->buf; 1255 memcpy(gids, gw->gids, sizeof gw->gids); 1256 1257 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1258 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1259 MLX4_CMD_WRAPPED); 1260 if (err) 1261 pr_warn("set port command failed\n"); 1262 else { 1263 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); 1264 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); 1265 } 1266 1267 mlx4_free_cmd_mailbox(dev, mailbox); 1268 kfree(gw); 1269 } 1270 1271 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) 1272 { 1273 struct net_device *ndev = dev->iboe.netdevs[port - 1]; 1274 struct update_gid_work *work; 1275 struct net_device *tmp; 1276 int i; 1277 u8 *hits; 1278 int ret; 1279 union ib_gid gid; 1280 int free; 1281 int found; 1282 int need_update = 0; 1283 u16 vid; 1284 1285 work = kzalloc(sizeof *work, GFP_ATOMIC); 1286 if (!work) 1287 return -ENOMEM; 1288 1289 hits = kzalloc(128, GFP_ATOMIC); 1290 if (!hits) { 1291 ret = -ENOMEM; 1292 goto out; 1293 } 1294 1295 rcu_read_lock(); 1296 for_each_netdev_rcu(&init_net, tmp) { 1297 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { 1298 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1299 vid = rdma_vlan_dev_vlan_id(tmp); 1300 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); 1301 found = 0; 1302 free = -1; 1303 for (i = 0; i < 128; ++i) { 1304 if (free < 0 && 1305 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1306 free = i; 1307 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { 1308 hits[i] = 1; 1309 found = 1; 1310 break; 1311 } 1312 } 1313 1314 if (!found) { 1315 if (tmp == ndev && 1316 (memcmp(&dev->iboe.gid_table[port - 1][0], 1317 &gid, sizeof gid) || 1318 !memcmp(&dev->iboe.gid_table[port - 1][0], 1319 &zgid, sizeof gid))) { 1320 dev->iboe.gid_table[port - 1][0] = gid; 1321 ++need_update; 1322 hits[0] = 1; 1323 } else if (free >= 0) { 1324 dev->iboe.gid_table[port - 1][free] = gid; 1325 hits[free] = 1; 1326 ++need_update; 1327 } 1328 } 1329 } 1330 } 1331 rcu_read_unlock(); 1332 1333 for (i = 0; i < 128; ++i) 1334 if (!hits[i]) { 1335 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1336 ++need_update; 1337 dev->iboe.gid_table[port - 1][i] = zgid; 1338 } 1339 1340 if (need_update) { 1341 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); 1342 INIT_WORK(&work->work, update_gids_task); 1343 work->port = port; 1344 work->dev = dev; 1345 queue_work(wq, &work->work); 1346 } else 1347 kfree(work); 1348 1349 kfree(hits); 1350 return 0; 1351 1352 out: 1353 kfree(work); 1354 return ret; 1355 } 1356 1357 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) 1358 { 1359 switch (event) { 1360 case NETDEV_UP: 1361 case NETDEV_CHANGEADDR: 1362 update_ipv6_gids(dev, port, 0); 1363 break; 1364 1365 case NETDEV_DOWN: 1366 update_ipv6_gids(dev, port, 1); 1367 dev->iboe.netdevs[port - 1] = NULL; 1368 } 1369 } 1370 1371 static void netdev_added(struct mlx4_ib_dev *dev, int port) 1372 { 1373 update_ipv6_gids(dev, port, 0); 1374 } 1375 1376 static void netdev_removed(struct mlx4_ib_dev *dev, int port) 1377 { 1378 update_ipv6_gids(dev, port, 1); 1379 } 1380 1381 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, 1382 void *ptr) 1383 { 1384 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1385 struct mlx4_ib_dev *ibdev; 1386 struct net_device *oldnd; 1387 struct mlx4_ib_iboe *iboe; 1388 int port; 1389 1390 if (!net_eq(dev_net(dev), &init_net)) 1391 return NOTIFY_DONE; 1392 1393 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1394 iboe = &ibdev->iboe; 1395 1396 spin_lock(&iboe->lock); 1397 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1398 oldnd = iboe->netdevs[port - 1]; 1399 iboe->netdevs[port - 1] = 1400 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1401 if (oldnd != iboe->netdevs[port - 1]) { 1402 if (iboe->netdevs[port - 1]) 1403 netdev_added(ibdev, port); 1404 else 1405 netdev_removed(ibdev, port); 1406 } 1407 } 1408 1409 if (dev == iboe->netdevs[0] || 1410 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) 1411 handle_en_event(ibdev, 1, event); 1412 else if (dev == iboe->netdevs[1] 1413 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) 1414 handle_en_event(ibdev, 2, event); 1415 1416 spin_unlock(&iboe->lock); 1417 1418 return NOTIFY_DONE; 1419 } 1420 1421 static void init_pkeys(struct mlx4_ib_dev *ibdev) 1422 { 1423 int port; 1424 int slave; 1425 int i; 1426 1427 if (mlx4_is_master(ibdev->dev)) { 1428 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) { 1429 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1430 for (i = 0; 1431 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1432 ++i) { 1433 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 1434 /* master has the identity virt2phys pkey mapping */ 1435 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 1436 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 1437 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 1438 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 1439 } 1440 } 1441 } 1442 /* initialize pkey cache */ 1443 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1444 for (i = 0; 1445 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1446 ++i) 1447 ibdev->pkeys.phys_pkey_cache[port-1][i] = 1448 (i) ? 0 : 0xFFFF; 1449 } 1450 } 1451 } 1452 1453 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1454 { 1455 char name[32]; 1456 int eq_per_port = 0; 1457 int added_eqs = 0; 1458 int total_eqs = 0; 1459 int i, j, eq; 1460 1461 /* Legacy mode or comp_pool is not large enough */ 1462 if (dev->caps.comp_pool == 0 || 1463 dev->caps.num_ports > dev->caps.comp_pool) 1464 return; 1465 1466 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ 1467 dev->caps.num_ports); 1468 1469 /* Init eq table */ 1470 added_eqs = 0; 1471 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 1472 added_eqs += eq_per_port; 1473 1474 total_eqs = dev->caps.num_comp_vectors + added_eqs; 1475 1476 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 1477 if (!ibdev->eq_table) 1478 return; 1479 1480 ibdev->eq_added = added_eqs; 1481 1482 eq = 0; 1483 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 1484 for (j = 0; j < eq_per_port; j++) { 1485 sprintf(name, "mlx4-ib-%d-%d@%s", 1486 i, j, dev->pdev->bus->name); 1487 /* Set IRQ for specific name (per ring) */ 1488 if (mlx4_assign_eq(dev, name, NULL, 1489 &ibdev->eq_table[eq])) { 1490 /* Use legacy (same as mlx4_en driver) */ 1491 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 1492 ibdev->eq_table[eq] = 1493 (eq % dev->caps.num_comp_vectors); 1494 } 1495 eq++; 1496 } 1497 } 1498 1499 /* Fill the reset of the vector with legacy EQ */ 1500 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 1501 ibdev->eq_table[eq++] = i; 1502 1503 /* Advertise the new number of EQs to clients */ 1504 ibdev->ib_dev.num_comp_vectors = total_eqs; 1505 } 1506 1507 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1508 { 1509 int i; 1510 1511 /* no additional eqs were added */ 1512 if (!ibdev->eq_table) 1513 return; 1514 1515 /* Reset the advertised EQ number */ 1516 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1517 1518 /* Free only the added eqs */ 1519 for (i = 0; i < ibdev->eq_added; i++) { 1520 /* Don't free legacy eqs if used */ 1521 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 1522 continue; 1523 mlx4_release_eq(dev, ibdev->eq_table[i]); 1524 } 1525 1526 kfree(ibdev->eq_table); 1527 } 1528 1529 static void *mlx4_ib_add(struct mlx4_dev *dev) 1530 { 1531 struct mlx4_ib_dev *ibdev; 1532 int num_ports = 0; 1533 int i, j; 1534 int err; 1535 struct mlx4_ib_iboe *iboe; 1536 1537 pr_info_once("%s", mlx4_ib_version); 1538 1539 mlx4_foreach_non_ib_transport_port(i, dev) 1540 num_ports++; 1541 1542 if (mlx4_is_mfunc(dev) && num_ports) { 1543 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n"); 1544 return NULL; 1545 } 1546 1547 num_ports = 0; 1548 mlx4_foreach_ib_transport_port(i, dev) 1549 num_ports++; 1550 1551 /* No point in registering a device with no ports... */ 1552 if (num_ports == 0) 1553 return NULL; 1554 1555 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 1556 if (!ibdev) { 1557 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 1558 return NULL; 1559 } 1560 1561 iboe = &ibdev->iboe; 1562 1563 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 1564 goto err_dealloc; 1565 1566 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 1567 goto err_pd; 1568 1569 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 1570 PAGE_SIZE); 1571 if (!ibdev->uar_map) 1572 goto err_uar; 1573 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 1574 1575 ibdev->dev = dev; 1576 1577 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 1578 ibdev->ib_dev.owner = THIS_MODULE; 1579 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 1580 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 1581 ibdev->num_ports = num_ports; 1582 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 1583 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1584 ibdev->ib_dev.dma_device = &dev->pdev->dev; 1585 1586 if (dev->caps.userspace_caps) 1587 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 1588 else 1589 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 1590 1591 ibdev->ib_dev.uverbs_cmd_mask = 1592 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1593 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1594 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1595 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1596 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1597 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1598 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1599 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1600 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1601 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1602 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1603 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1604 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1605 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1606 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1607 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1608 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1609 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1610 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1611 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1612 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1613 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1614 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1615 1616 ibdev->ib_dev.query_device = mlx4_ib_query_device; 1617 ibdev->ib_dev.query_port = mlx4_ib_query_port; 1618 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 1619 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 1620 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 1621 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 1622 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 1623 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 1624 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 1625 ibdev->ib_dev.mmap = mlx4_ib_mmap; 1626 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 1627 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 1628 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 1629 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 1630 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 1631 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 1632 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 1633 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 1634 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 1635 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 1636 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 1637 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 1638 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 1639 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 1640 ibdev->ib_dev.post_send = mlx4_ib_post_send; 1641 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 1642 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 1643 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 1644 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 1645 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 1646 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 1647 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 1648 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 1649 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 1650 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 1651 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 1652 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 1653 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 1654 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 1655 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 1656 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 1657 1658 if (!mlx4_is_slave(ibdev->dev)) { 1659 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 1660 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 1661 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 1662 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 1663 } 1664 1665 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 1666 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 1667 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 1668 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw; 1669 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 1670 1671 ibdev->ib_dev.uverbs_cmd_mask |= 1672 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 1673 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 1674 } 1675 1676 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 1677 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 1678 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 1679 ibdev->ib_dev.uverbs_cmd_mask |= 1680 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1681 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1682 } 1683 1684 if (check_flow_steering_support(dev)) { 1685 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 1686 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 1687 1688 ibdev->ib_dev.uverbs_ex_cmd_mask |= 1689 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 1690 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 1691 } 1692 1693 mlx4_ib_alloc_eqs(dev, ibdev); 1694 1695 spin_lock_init(&iboe->lock); 1696 1697 if (init_node_data(ibdev)) 1698 goto err_map; 1699 1700 for (i = 0; i < ibdev->num_ports; ++i) { 1701 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 1702 IB_LINK_LAYER_ETHERNET) { 1703 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 1704 if (err) 1705 ibdev->counters[i] = -1; 1706 } else 1707 ibdev->counters[i] = -1; 1708 } 1709 1710 spin_lock_init(&ibdev->sm_lock); 1711 mutex_init(&ibdev->cap_mask_mutex); 1712 1713 if (ib_register_device(&ibdev->ib_dev, NULL)) 1714 goto err_counter; 1715 1716 if (mlx4_ib_mad_init(ibdev)) 1717 goto err_reg; 1718 1719 if (mlx4_ib_init_sriov(ibdev)) 1720 goto err_mad; 1721 1722 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { 1723 iboe->nb.notifier_call = mlx4_ib_netdev_event; 1724 err = register_netdevice_notifier(&iboe->nb); 1725 if (err) 1726 goto err_sriov; 1727 } 1728 1729 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 1730 if (device_create_file(&ibdev->ib_dev.dev, 1731 mlx4_class_attributes[j])) 1732 goto err_notif; 1733 } 1734 1735 ibdev->ib_active = true; 1736 1737 if (mlx4_is_mfunc(ibdev->dev)) 1738 init_pkeys(ibdev); 1739 1740 /* create paravirt contexts for any VFs which are active */ 1741 if (mlx4_is_master(ibdev->dev)) { 1742 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 1743 if (j == mlx4_master_func_num(ibdev->dev)) 1744 continue; 1745 if (mlx4_is_slave_active(ibdev->dev, j)) 1746 do_slave_init(ibdev, j, 1); 1747 } 1748 } 1749 return ibdev; 1750 1751 err_notif: 1752 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1753 pr_warn("failure unregistering notifier\n"); 1754 flush_workqueue(wq); 1755 1756 err_sriov: 1757 mlx4_ib_close_sriov(ibdev); 1758 1759 err_mad: 1760 mlx4_ib_mad_cleanup(ibdev); 1761 1762 err_reg: 1763 ib_unregister_device(&ibdev->ib_dev); 1764 1765 err_counter: 1766 for (; i; --i) 1767 if (ibdev->counters[i - 1] != -1) 1768 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 1769 1770 err_map: 1771 iounmap(ibdev->uar_map); 1772 1773 err_uar: 1774 mlx4_uar_free(dev, &ibdev->priv_uar); 1775 1776 err_pd: 1777 mlx4_pd_free(dev, ibdev->priv_pdn); 1778 1779 err_dealloc: 1780 ib_dealloc_device(&ibdev->ib_dev); 1781 1782 return NULL; 1783 } 1784 1785 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 1786 { 1787 struct mlx4_ib_dev *ibdev = ibdev_ptr; 1788 int p; 1789 1790 mlx4_ib_close_sriov(ibdev); 1791 mlx4_ib_mad_cleanup(ibdev); 1792 ib_unregister_device(&ibdev->ib_dev); 1793 if (ibdev->iboe.nb.notifier_call) { 1794 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1795 pr_warn("failure unregistering notifier\n"); 1796 ibdev->iboe.nb.notifier_call = NULL; 1797 } 1798 iounmap(ibdev->uar_map); 1799 for (p = 0; p < ibdev->num_ports; ++p) 1800 if (ibdev->counters[p] != -1) 1801 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 1802 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 1803 mlx4_CLOSE_PORT(dev, p); 1804 1805 mlx4_ib_free_eqs(dev, ibdev); 1806 1807 mlx4_uar_free(dev, &ibdev->priv_uar); 1808 mlx4_pd_free(dev, ibdev->priv_pdn); 1809 ib_dealloc_device(&ibdev->ib_dev); 1810 } 1811 1812 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 1813 { 1814 struct mlx4_ib_demux_work **dm = NULL; 1815 struct mlx4_dev *dev = ibdev->dev; 1816 int i; 1817 unsigned long flags; 1818 1819 if (!mlx4_is_master(dev)) 1820 return; 1821 1822 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC); 1823 if (!dm) { 1824 pr_err("failed to allocate memory for tunneling qp update\n"); 1825 goto out; 1826 } 1827 1828 for (i = 0; i < dev->caps.num_ports; i++) { 1829 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 1830 if (!dm[i]) { 1831 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 1832 for (i = 0; i < dev->caps.num_ports; i++) { 1833 if (dm[i]) 1834 kfree(dm[i]); 1835 } 1836 goto out; 1837 } 1838 } 1839 /* initialize or tear down tunnel QPs for the slave */ 1840 for (i = 0; i < dev->caps.num_ports; i++) { 1841 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 1842 dm[i]->port = i + 1; 1843 dm[i]->slave = slave; 1844 dm[i]->do_init = do_init; 1845 dm[i]->dev = ibdev; 1846 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 1847 if (!ibdev->sriov.is_going_down) 1848 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 1849 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 1850 } 1851 out: 1852 kfree(dm); 1853 return; 1854 } 1855 1856 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 1857 enum mlx4_dev_event event, unsigned long param) 1858 { 1859 struct ib_event ibev; 1860 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 1861 struct mlx4_eqe *eqe = NULL; 1862 struct ib_event_work *ew; 1863 int p = 0; 1864 1865 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 1866 eqe = (struct mlx4_eqe *)param; 1867 else 1868 p = (int) param; 1869 1870 switch (event) { 1871 case MLX4_DEV_EVENT_PORT_UP: 1872 if (p > ibdev->num_ports) 1873 return; 1874 if (mlx4_is_master(dev) && 1875 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 1876 IB_LINK_LAYER_INFINIBAND) { 1877 mlx4_ib_invalidate_all_guid_record(ibdev, p); 1878 } 1879 ibev.event = IB_EVENT_PORT_ACTIVE; 1880 break; 1881 1882 case MLX4_DEV_EVENT_PORT_DOWN: 1883 if (p > ibdev->num_ports) 1884 return; 1885 ibev.event = IB_EVENT_PORT_ERR; 1886 break; 1887 1888 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 1889 ibdev->ib_active = false; 1890 ibev.event = IB_EVENT_DEVICE_FATAL; 1891 break; 1892 1893 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 1894 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 1895 if (!ew) { 1896 pr_err("failed to allocate memory for events work\n"); 1897 break; 1898 } 1899 1900 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 1901 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 1902 ew->ib_dev = ibdev; 1903 /* need to queue only for port owner, which uses GEN_EQE */ 1904 if (mlx4_is_master(dev)) 1905 queue_work(wq, &ew->work); 1906 else 1907 handle_port_mgmt_change_event(&ew->work); 1908 return; 1909 1910 case MLX4_DEV_EVENT_SLAVE_INIT: 1911 /* here, p is the slave id */ 1912 do_slave_init(ibdev, p, 1); 1913 return; 1914 1915 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 1916 /* here, p is the slave id */ 1917 do_slave_init(ibdev, p, 0); 1918 return; 1919 1920 default: 1921 return; 1922 } 1923 1924 ibev.device = ibdev_ptr; 1925 ibev.element.port_num = (u8) p; 1926 1927 ib_dispatch_event(&ibev); 1928 } 1929 1930 static struct mlx4_interface mlx4_ib_interface = { 1931 .add = mlx4_ib_add, 1932 .remove = mlx4_ib_remove, 1933 .event = mlx4_ib_event, 1934 .protocol = MLX4_PROT_IB_IPV6 1935 }; 1936 1937 static int __init mlx4_ib_init(void) 1938 { 1939 int err; 1940 1941 wq = create_singlethread_workqueue("mlx4_ib"); 1942 if (!wq) 1943 return -ENOMEM; 1944 1945 err = mlx4_ib_mcg_init(); 1946 if (err) 1947 goto clean_wq; 1948 1949 err = mlx4_register_interface(&mlx4_ib_interface); 1950 if (err) 1951 goto clean_mcg; 1952 1953 return 0; 1954 1955 clean_mcg: 1956 mlx4_ib_mcg_destroy(); 1957 1958 clean_wq: 1959 destroy_workqueue(wq); 1960 return err; 1961 } 1962 1963 static void __exit mlx4_ib_cleanup(void) 1964 { 1965 mlx4_unregister_interface(&mlx4_ib_interface); 1966 mlx4_ib_mcg_destroy(); 1967 destroy_workqueue(wq); 1968 } 1969 1970 module_init(mlx4_ib_init); 1971 module_exit(mlx4_ib_cleanup); 1972