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->caps.num_qps - dev->dev->caps.reserved_qps; 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->caps.num_cqs - dev->dev->caps.reserved_cqs; 185 props->max_cqe = dev->dev->caps.max_cqes; 186 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; 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->caps.num_srqs - dev->dev->caps.reserved_srqs; 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 memset(mailbox->buf, 0, 256); 530 memcpy(mailbox->buf, props->node_desc, 64); 531 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 532 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 533 534 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 535 536 return 0; 537 } 538 539 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 540 u32 cap_mask) 541 { 542 struct mlx4_cmd_mailbox *mailbox; 543 int err; 544 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 545 546 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 547 if (IS_ERR(mailbox)) 548 return PTR_ERR(mailbox); 549 550 memset(mailbox->buf, 0, 256); 551 552 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 553 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 554 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 555 } else { 556 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 557 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 558 } 559 560 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, 561 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 562 563 mlx4_free_cmd_mailbox(dev->dev, mailbox); 564 return err; 565 } 566 567 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 568 struct ib_port_modify *props) 569 { 570 struct ib_port_attr attr; 571 u32 cap_mask; 572 int err; 573 574 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 575 576 err = mlx4_ib_query_port(ibdev, port, &attr); 577 if (err) 578 goto out; 579 580 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 581 ~props->clr_port_cap_mask; 582 583 err = mlx4_SET_PORT(to_mdev(ibdev), port, 584 !!(mask & IB_PORT_RESET_QKEY_CNTR), 585 cap_mask); 586 587 out: 588 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 589 return err; 590 } 591 592 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 593 struct ib_udata *udata) 594 { 595 struct mlx4_ib_dev *dev = to_mdev(ibdev); 596 struct mlx4_ib_ucontext *context; 597 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 598 struct mlx4_ib_alloc_ucontext_resp resp; 599 int err; 600 601 if (!dev->ib_active) 602 return ERR_PTR(-EAGAIN); 603 604 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 605 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 606 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 607 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 608 } else { 609 resp.dev_caps = dev->dev->caps.userspace_caps; 610 resp.qp_tab_size = dev->dev->caps.num_qps; 611 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 612 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 613 resp.cqe_size = dev->dev->caps.cqe_size; 614 } 615 616 context = kmalloc(sizeof *context, GFP_KERNEL); 617 if (!context) 618 return ERR_PTR(-ENOMEM); 619 620 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 621 if (err) { 622 kfree(context); 623 return ERR_PTR(err); 624 } 625 626 INIT_LIST_HEAD(&context->db_page_list); 627 mutex_init(&context->db_page_mutex); 628 629 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 630 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 631 else 632 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 633 634 if (err) { 635 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 636 kfree(context); 637 return ERR_PTR(-EFAULT); 638 } 639 640 return &context->ibucontext; 641 } 642 643 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 644 { 645 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 646 647 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 648 kfree(context); 649 650 return 0; 651 } 652 653 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 654 { 655 struct mlx4_ib_dev *dev = to_mdev(context->device); 656 657 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 658 return -EINVAL; 659 660 if (vma->vm_pgoff == 0) { 661 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 662 663 if (io_remap_pfn_range(vma, vma->vm_start, 664 to_mucontext(context)->uar.pfn, 665 PAGE_SIZE, vma->vm_page_prot)) 666 return -EAGAIN; 667 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 668 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 669 670 if (io_remap_pfn_range(vma, vma->vm_start, 671 to_mucontext(context)->uar.pfn + 672 dev->dev->caps.num_uars, 673 PAGE_SIZE, vma->vm_page_prot)) 674 return -EAGAIN; 675 } else 676 return -EINVAL; 677 678 return 0; 679 } 680 681 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 682 struct ib_ucontext *context, 683 struct ib_udata *udata) 684 { 685 struct mlx4_ib_pd *pd; 686 int err; 687 688 pd = kmalloc(sizeof *pd, GFP_KERNEL); 689 if (!pd) 690 return ERR_PTR(-ENOMEM); 691 692 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 693 if (err) { 694 kfree(pd); 695 return ERR_PTR(err); 696 } 697 698 if (context) 699 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 700 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 701 kfree(pd); 702 return ERR_PTR(-EFAULT); 703 } 704 705 return &pd->ibpd; 706 } 707 708 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 709 { 710 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 711 kfree(pd); 712 713 return 0; 714 } 715 716 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 717 struct ib_ucontext *context, 718 struct ib_udata *udata) 719 { 720 struct mlx4_ib_xrcd *xrcd; 721 int err; 722 723 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 724 return ERR_PTR(-ENOSYS); 725 726 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 727 if (!xrcd) 728 return ERR_PTR(-ENOMEM); 729 730 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 731 if (err) 732 goto err1; 733 734 xrcd->pd = ib_alloc_pd(ibdev); 735 if (IS_ERR(xrcd->pd)) { 736 err = PTR_ERR(xrcd->pd); 737 goto err2; 738 } 739 740 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 741 if (IS_ERR(xrcd->cq)) { 742 err = PTR_ERR(xrcd->cq); 743 goto err3; 744 } 745 746 return &xrcd->ibxrcd; 747 748 err3: 749 ib_dealloc_pd(xrcd->pd); 750 err2: 751 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 752 err1: 753 kfree(xrcd); 754 return ERR_PTR(err); 755 } 756 757 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 758 { 759 ib_destroy_cq(to_mxrcd(xrcd)->cq); 760 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 761 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 762 kfree(xrcd); 763 764 return 0; 765 } 766 767 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 768 { 769 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 770 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 771 struct mlx4_ib_gid_entry *ge; 772 773 ge = kzalloc(sizeof *ge, GFP_KERNEL); 774 if (!ge) 775 return -ENOMEM; 776 777 ge->gid = *gid; 778 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 779 ge->port = mqp->port; 780 ge->added = 1; 781 } 782 783 mutex_lock(&mqp->mutex); 784 list_add_tail(&ge->list, &mqp->gid_list); 785 mutex_unlock(&mqp->mutex); 786 787 return 0; 788 } 789 790 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 791 union ib_gid *gid) 792 { 793 u8 mac[6]; 794 struct net_device *ndev; 795 int ret = 0; 796 797 if (!mqp->port) 798 return 0; 799 800 spin_lock(&mdev->iboe.lock); 801 ndev = mdev->iboe.netdevs[mqp->port - 1]; 802 if (ndev) 803 dev_hold(ndev); 804 spin_unlock(&mdev->iboe.lock); 805 806 if (ndev) { 807 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 808 rtnl_lock(); 809 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); 810 ret = 1; 811 rtnl_unlock(); 812 dev_put(ndev); 813 } 814 815 return ret; 816 } 817 818 struct mlx4_ib_steering { 819 struct list_head list; 820 u64 reg_id; 821 union ib_gid gid; 822 }; 823 824 static int parse_flow_attr(struct mlx4_dev *dev, 825 union ib_flow_spec *ib_spec, 826 struct _rule_hw *mlx4_spec) 827 { 828 enum mlx4_net_trans_rule_id type; 829 830 switch (ib_spec->type) { 831 case IB_FLOW_SPEC_ETH: 832 type = MLX4_NET_TRANS_RULE_ID_ETH; 833 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 834 ETH_ALEN); 835 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 836 ETH_ALEN); 837 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 838 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 839 break; 840 841 case IB_FLOW_SPEC_IPV4: 842 type = MLX4_NET_TRANS_RULE_ID_IPV4; 843 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 844 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 845 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 846 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 847 break; 848 849 case IB_FLOW_SPEC_TCP: 850 case IB_FLOW_SPEC_UDP: 851 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 852 MLX4_NET_TRANS_RULE_ID_TCP : 853 MLX4_NET_TRANS_RULE_ID_UDP; 854 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 855 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 856 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 857 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 858 break; 859 860 default: 861 return -EINVAL; 862 } 863 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 864 mlx4_hw_rule_sz(dev, type) < 0) 865 return -EINVAL; 866 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 867 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 868 return mlx4_hw_rule_sz(dev, type); 869 } 870 871 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 872 int domain, 873 enum mlx4_net_trans_promisc_mode flow_type, 874 u64 *reg_id) 875 { 876 int ret, i; 877 int size = 0; 878 void *ib_flow; 879 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 880 struct mlx4_cmd_mailbox *mailbox; 881 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 882 size_t rule_size = sizeof(struct mlx4_net_trans_rule_hw_ctrl) + 883 (sizeof(struct _rule_hw) * flow_attr->num_of_specs); 884 885 static const u16 __mlx4_domain[] = { 886 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 887 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 888 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 889 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 890 }; 891 892 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 893 pr_err("Invalid priority value %d\n", flow_attr->priority); 894 return -EINVAL; 895 } 896 897 if (domain >= IB_FLOW_DOMAIN_NUM) { 898 pr_err("Invalid domain value %d\n", domain); 899 return -EINVAL; 900 } 901 902 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 903 return -EINVAL; 904 905 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 906 if (IS_ERR(mailbox)) 907 return PTR_ERR(mailbox); 908 memset(mailbox->buf, 0, rule_size); 909 ctrl = mailbox->buf; 910 911 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 912 flow_attr->priority); 913 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 914 ctrl->port = flow_attr->port; 915 ctrl->qpn = cpu_to_be32(qp->qp_num); 916 917 ib_flow = flow_attr + 1; 918 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 919 for (i = 0; i < flow_attr->num_of_specs; i++) { 920 ret = parse_flow_attr(mdev->dev, ib_flow, mailbox->buf + size); 921 if (ret < 0) { 922 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 923 return -EINVAL; 924 } 925 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 926 size += ret; 927 } 928 929 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 930 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 931 MLX4_CMD_NATIVE); 932 if (ret == -ENOMEM) 933 pr_err("mcg table is full. Fail to register network rule.\n"); 934 else if (ret == -ENXIO) 935 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 936 else if (ret) 937 pr_err("Invalid argumant. Fail to register network rule.\n"); 938 939 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 940 return ret; 941 } 942 943 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 944 { 945 int err; 946 err = mlx4_cmd(dev, reg_id, 0, 0, 947 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 948 MLX4_CMD_NATIVE); 949 if (err) 950 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 951 reg_id); 952 return err; 953 } 954 955 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 956 struct ib_flow_attr *flow_attr, 957 int domain) 958 { 959 int err = 0, i = 0; 960 struct mlx4_ib_flow *mflow; 961 enum mlx4_net_trans_promisc_mode type[2]; 962 963 memset(type, 0, sizeof(type)); 964 965 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 966 if (!mflow) { 967 err = -ENOMEM; 968 goto err_free; 969 } 970 971 switch (flow_attr->type) { 972 case IB_FLOW_ATTR_NORMAL: 973 type[0] = MLX4_FS_REGULAR; 974 break; 975 976 case IB_FLOW_ATTR_ALL_DEFAULT: 977 type[0] = MLX4_FS_ALL_DEFAULT; 978 break; 979 980 case IB_FLOW_ATTR_MC_DEFAULT: 981 type[0] = MLX4_FS_MC_DEFAULT; 982 break; 983 984 case IB_FLOW_ATTR_SNIFFER: 985 type[0] = MLX4_FS_UC_SNIFFER; 986 type[1] = MLX4_FS_MC_SNIFFER; 987 break; 988 989 default: 990 err = -EINVAL; 991 goto err_free; 992 } 993 994 while (i < ARRAY_SIZE(type) && type[i]) { 995 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 996 &mflow->reg_id[i]); 997 if (err) 998 goto err_free; 999 i++; 1000 } 1001 1002 return &mflow->ibflow; 1003 1004 err_free: 1005 kfree(mflow); 1006 return ERR_PTR(err); 1007 } 1008 1009 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1010 { 1011 int err, ret = 0; 1012 int i = 0; 1013 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1014 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1015 1016 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) { 1017 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]); 1018 if (err) 1019 ret = err; 1020 i++; 1021 } 1022 1023 kfree(mflow); 1024 return ret; 1025 } 1026 1027 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1028 { 1029 int err; 1030 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1031 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1032 u64 reg_id; 1033 struct mlx4_ib_steering *ib_steering = NULL; 1034 1035 if (mdev->dev->caps.steering_mode == 1036 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1037 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1038 if (!ib_steering) 1039 return -ENOMEM; 1040 } 1041 1042 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1043 !!(mqp->flags & 1044 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1045 MLX4_PROT_IB_IPV6, ®_id); 1046 if (err) 1047 goto err_malloc; 1048 1049 err = add_gid_entry(ibqp, gid); 1050 if (err) 1051 goto err_add; 1052 1053 if (ib_steering) { 1054 memcpy(ib_steering->gid.raw, gid->raw, 16); 1055 ib_steering->reg_id = reg_id; 1056 mutex_lock(&mqp->mutex); 1057 list_add(&ib_steering->list, &mqp->steering_rules); 1058 mutex_unlock(&mqp->mutex); 1059 } 1060 return 0; 1061 1062 err_add: 1063 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1064 MLX4_PROT_IB_IPV6, reg_id); 1065 err_malloc: 1066 kfree(ib_steering); 1067 1068 return err; 1069 } 1070 1071 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1072 { 1073 struct mlx4_ib_gid_entry *ge; 1074 struct mlx4_ib_gid_entry *tmp; 1075 struct mlx4_ib_gid_entry *ret = NULL; 1076 1077 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1078 if (!memcmp(raw, ge->gid.raw, 16)) { 1079 ret = ge; 1080 break; 1081 } 1082 } 1083 1084 return ret; 1085 } 1086 1087 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1088 { 1089 int err; 1090 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1091 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1092 u8 mac[6]; 1093 struct net_device *ndev; 1094 struct mlx4_ib_gid_entry *ge; 1095 u64 reg_id = 0; 1096 1097 if (mdev->dev->caps.steering_mode == 1098 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1099 struct mlx4_ib_steering *ib_steering; 1100 1101 mutex_lock(&mqp->mutex); 1102 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1103 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1104 list_del(&ib_steering->list); 1105 break; 1106 } 1107 } 1108 mutex_unlock(&mqp->mutex); 1109 if (&ib_steering->list == &mqp->steering_rules) { 1110 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1111 return -EINVAL; 1112 } 1113 reg_id = ib_steering->reg_id; 1114 kfree(ib_steering); 1115 } 1116 1117 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1118 MLX4_PROT_IB_IPV6, reg_id); 1119 if (err) 1120 return err; 1121 1122 mutex_lock(&mqp->mutex); 1123 ge = find_gid_entry(mqp, gid->raw); 1124 if (ge) { 1125 spin_lock(&mdev->iboe.lock); 1126 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1127 if (ndev) 1128 dev_hold(ndev); 1129 spin_unlock(&mdev->iboe.lock); 1130 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 1131 if (ndev) { 1132 rtnl_lock(); 1133 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); 1134 rtnl_unlock(); 1135 dev_put(ndev); 1136 } 1137 list_del(&ge->list); 1138 kfree(ge); 1139 } else 1140 pr_warn("could not find mgid entry\n"); 1141 1142 mutex_unlock(&mqp->mutex); 1143 1144 return 0; 1145 } 1146 1147 static int init_node_data(struct mlx4_ib_dev *dev) 1148 { 1149 struct ib_smp *in_mad = NULL; 1150 struct ib_smp *out_mad = NULL; 1151 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1152 int err = -ENOMEM; 1153 1154 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1155 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1156 if (!in_mad || !out_mad) 1157 goto out; 1158 1159 init_query_mad(in_mad); 1160 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1161 if (mlx4_is_master(dev->dev)) 1162 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1163 1164 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1165 if (err) 1166 goto out; 1167 1168 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1169 1170 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1171 1172 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1173 if (err) 1174 goto out; 1175 1176 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1177 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1178 1179 out: 1180 kfree(in_mad); 1181 kfree(out_mad); 1182 return err; 1183 } 1184 1185 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1186 char *buf) 1187 { 1188 struct mlx4_ib_dev *dev = 1189 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1190 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 1191 } 1192 1193 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1194 char *buf) 1195 { 1196 struct mlx4_ib_dev *dev = 1197 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1198 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 1199 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 1200 (int) dev->dev->caps.fw_ver & 0xffff); 1201 } 1202 1203 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1204 char *buf) 1205 { 1206 struct mlx4_ib_dev *dev = 1207 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1208 return sprintf(buf, "%x\n", dev->dev->rev_id); 1209 } 1210 1211 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1212 char *buf) 1213 { 1214 struct mlx4_ib_dev *dev = 1215 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1216 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 1217 dev->dev->board_id); 1218 } 1219 1220 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1221 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1222 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1223 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1224 1225 static struct device_attribute *mlx4_class_attributes[] = { 1226 &dev_attr_hw_rev, 1227 &dev_attr_fw_ver, 1228 &dev_attr_hca_type, 1229 &dev_attr_board_id 1230 }; 1231 1232 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) 1233 { 1234 memcpy(eui, dev->dev_addr, 3); 1235 memcpy(eui + 5, dev->dev_addr + 3, 3); 1236 if (vlan_id < 0x1000) { 1237 eui[3] = vlan_id >> 8; 1238 eui[4] = vlan_id & 0xff; 1239 } else { 1240 eui[3] = 0xff; 1241 eui[4] = 0xfe; 1242 } 1243 eui[0] ^= 2; 1244 } 1245 1246 static void update_gids_task(struct work_struct *work) 1247 { 1248 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1249 struct mlx4_cmd_mailbox *mailbox; 1250 union ib_gid *gids; 1251 int err; 1252 struct mlx4_dev *dev = gw->dev->dev; 1253 1254 mailbox = mlx4_alloc_cmd_mailbox(dev); 1255 if (IS_ERR(mailbox)) { 1256 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1257 return; 1258 } 1259 1260 gids = mailbox->buf; 1261 memcpy(gids, gw->gids, sizeof gw->gids); 1262 1263 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1264 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1265 MLX4_CMD_WRAPPED); 1266 if (err) 1267 pr_warn("set port command failed\n"); 1268 else { 1269 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); 1270 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); 1271 } 1272 1273 mlx4_free_cmd_mailbox(dev, mailbox); 1274 kfree(gw); 1275 } 1276 1277 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) 1278 { 1279 struct net_device *ndev = dev->iboe.netdevs[port - 1]; 1280 struct update_gid_work *work; 1281 struct net_device *tmp; 1282 int i; 1283 u8 *hits; 1284 int ret; 1285 union ib_gid gid; 1286 int free; 1287 int found; 1288 int need_update = 0; 1289 u16 vid; 1290 1291 work = kzalloc(sizeof *work, GFP_ATOMIC); 1292 if (!work) 1293 return -ENOMEM; 1294 1295 hits = kzalloc(128, GFP_ATOMIC); 1296 if (!hits) { 1297 ret = -ENOMEM; 1298 goto out; 1299 } 1300 1301 rcu_read_lock(); 1302 for_each_netdev_rcu(&init_net, tmp) { 1303 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { 1304 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1305 vid = rdma_vlan_dev_vlan_id(tmp); 1306 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); 1307 found = 0; 1308 free = -1; 1309 for (i = 0; i < 128; ++i) { 1310 if (free < 0 && 1311 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1312 free = i; 1313 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { 1314 hits[i] = 1; 1315 found = 1; 1316 break; 1317 } 1318 } 1319 1320 if (!found) { 1321 if (tmp == ndev && 1322 (memcmp(&dev->iboe.gid_table[port - 1][0], 1323 &gid, sizeof gid) || 1324 !memcmp(&dev->iboe.gid_table[port - 1][0], 1325 &zgid, sizeof gid))) { 1326 dev->iboe.gid_table[port - 1][0] = gid; 1327 ++need_update; 1328 hits[0] = 1; 1329 } else if (free >= 0) { 1330 dev->iboe.gid_table[port - 1][free] = gid; 1331 hits[free] = 1; 1332 ++need_update; 1333 } 1334 } 1335 } 1336 } 1337 rcu_read_unlock(); 1338 1339 for (i = 0; i < 128; ++i) 1340 if (!hits[i]) { 1341 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1342 ++need_update; 1343 dev->iboe.gid_table[port - 1][i] = zgid; 1344 } 1345 1346 if (need_update) { 1347 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); 1348 INIT_WORK(&work->work, update_gids_task); 1349 work->port = port; 1350 work->dev = dev; 1351 queue_work(wq, &work->work); 1352 } else 1353 kfree(work); 1354 1355 kfree(hits); 1356 return 0; 1357 1358 out: 1359 kfree(work); 1360 return ret; 1361 } 1362 1363 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) 1364 { 1365 switch (event) { 1366 case NETDEV_UP: 1367 case NETDEV_CHANGEADDR: 1368 update_ipv6_gids(dev, port, 0); 1369 break; 1370 1371 case NETDEV_DOWN: 1372 update_ipv6_gids(dev, port, 1); 1373 dev->iboe.netdevs[port - 1] = NULL; 1374 } 1375 } 1376 1377 static void netdev_added(struct mlx4_ib_dev *dev, int port) 1378 { 1379 update_ipv6_gids(dev, port, 0); 1380 } 1381 1382 static void netdev_removed(struct mlx4_ib_dev *dev, int port) 1383 { 1384 update_ipv6_gids(dev, port, 1); 1385 } 1386 1387 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, 1388 void *ptr) 1389 { 1390 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1391 struct mlx4_ib_dev *ibdev; 1392 struct net_device *oldnd; 1393 struct mlx4_ib_iboe *iboe; 1394 int port; 1395 1396 if (!net_eq(dev_net(dev), &init_net)) 1397 return NOTIFY_DONE; 1398 1399 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1400 iboe = &ibdev->iboe; 1401 1402 spin_lock(&iboe->lock); 1403 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1404 oldnd = iboe->netdevs[port - 1]; 1405 iboe->netdevs[port - 1] = 1406 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1407 if (oldnd != iboe->netdevs[port - 1]) { 1408 if (iboe->netdevs[port - 1]) 1409 netdev_added(ibdev, port); 1410 else 1411 netdev_removed(ibdev, port); 1412 } 1413 } 1414 1415 if (dev == iboe->netdevs[0] || 1416 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) 1417 handle_en_event(ibdev, 1, event); 1418 else if (dev == iboe->netdevs[1] 1419 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) 1420 handle_en_event(ibdev, 2, event); 1421 1422 spin_unlock(&iboe->lock); 1423 1424 return NOTIFY_DONE; 1425 } 1426 1427 static void init_pkeys(struct mlx4_ib_dev *ibdev) 1428 { 1429 int port; 1430 int slave; 1431 int i; 1432 1433 if (mlx4_is_master(ibdev->dev)) { 1434 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) { 1435 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1436 for (i = 0; 1437 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1438 ++i) { 1439 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 1440 /* master has the identity virt2phys pkey mapping */ 1441 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 1442 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 1443 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 1444 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 1445 } 1446 } 1447 } 1448 /* initialize pkey cache */ 1449 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1450 for (i = 0; 1451 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1452 ++i) 1453 ibdev->pkeys.phys_pkey_cache[port-1][i] = 1454 (i) ? 0 : 0xFFFF; 1455 } 1456 } 1457 } 1458 1459 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1460 { 1461 char name[32]; 1462 int eq_per_port = 0; 1463 int added_eqs = 0; 1464 int total_eqs = 0; 1465 int i, j, eq; 1466 1467 /* Legacy mode or comp_pool is not large enough */ 1468 if (dev->caps.comp_pool == 0 || 1469 dev->caps.num_ports > dev->caps.comp_pool) 1470 return; 1471 1472 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ 1473 dev->caps.num_ports); 1474 1475 /* Init eq table */ 1476 added_eqs = 0; 1477 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 1478 added_eqs += eq_per_port; 1479 1480 total_eqs = dev->caps.num_comp_vectors + added_eqs; 1481 1482 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 1483 if (!ibdev->eq_table) 1484 return; 1485 1486 ibdev->eq_added = added_eqs; 1487 1488 eq = 0; 1489 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 1490 for (j = 0; j < eq_per_port; j++) { 1491 sprintf(name, "mlx4-ib-%d-%d@%s", 1492 i, j, dev->pdev->bus->name); 1493 /* Set IRQ for specific name (per ring) */ 1494 if (mlx4_assign_eq(dev, name, NULL, 1495 &ibdev->eq_table[eq])) { 1496 /* Use legacy (same as mlx4_en driver) */ 1497 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 1498 ibdev->eq_table[eq] = 1499 (eq % dev->caps.num_comp_vectors); 1500 } 1501 eq++; 1502 } 1503 } 1504 1505 /* Fill the reset of the vector with legacy EQ */ 1506 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 1507 ibdev->eq_table[eq++] = i; 1508 1509 /* Advertise the new number of EQs to clients */ 1510 ibdev->ib_dev.num_comp_vectors = total_eqs; 1511 } 1512 1513 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1514 { 1515 int i; 1516 1517 /* no additional eqs were added */ 1518 if (!ibdev->eq_table) 1519 return; 1520 1521 /* Reset the advertised EQ number */ 1522 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1523 1524 /* Free only the added eqs */ 1525 for (i = 0; i < ibdev->eq_added; i++) { 1526 /* Don't free legacy eqs if used */ 1527 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 1528 continue; 1529 mlx4_release_eq(dev, ibdev->eq_table[i]); 1530 } 1531 1532 kfree(ibdev->eq_table); 1533 } 1534 1535 static void *mlx4_ib_add(struct mlx4_dev *dev) 1536 { 1537 struct mlx4_ib_dev *ibdev; 1538 int num_ports = 0; 1539 int i, j; 1540 int err; 1541 struct mlx4_ib_iboe *iboe; 1542 1543 pr_info_once("%s", mlx4_ib_version); 1544 1545 mlx4_foreach_non_ib_transport_port(i, dev) 1546 num_ports++; 1547 1548 if (mlx4_is_mfunc(dev) && num_ports) { 1549 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n"); 1550 return NULL; 1551 } 1552 1553 num_ports = 0; 1554 mlx4_foreach_ib_transport_port(i, dev) 1555 num_ports++; 1556 1557 /* No point in registering a device with no ports... */ 1558 if (num_ports == 0) 1559 return NULL; 1560 1561 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 1562 if (!ibdev) { 1563 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 1564 return NULL; 1565 } 1566 1567 iboe = &ibdev->iboe; 1568 1569 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 1570 goto err_dealloc; 1571 1572 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 1573 goto err_pd; 1574 1575 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 1576 PAGE_SIZE); 1577 if (!ibdev->uar_map) 1578 goto err_uar; 1579 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 1580 1581 ibdev->dev = dev; 1582 1583 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 1584 ibdev->ib_dev.owner = THIS_MODULE; 1585 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 1586 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 1587 ibdev->num_ports = num_ports; 1588 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 1589 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1590 ibdev->ib_dev.dma_device = &dev->pdev->dev; 1591 1592 if (dev->caps.userspace_caps) 1593 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 1594 else 1595 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 1596 1597 ibdev->ib_dev.uverbs_cmd_mask = 1598 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1599 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1600 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1601 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1602 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1603 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1604 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1605 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1606 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1607 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1608 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1609 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1610 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1611 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1612 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1613 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1614 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1615 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1616 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1617 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1618 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1619 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1620 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1621 1622 ibdev->ib_dev.query_device = mlx4_ib_query_device; 1623 ibdev->ib_dev.query_port = mlx4_ib_query_port; 1624 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 1625 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 1626 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 1627 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 1628 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 1629 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 1630 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 1631 ibdev->ib_dev.mmap = mlx4_ib_mmap; 1632 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 1633 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 1634 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 1635 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 1636 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 1637 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 1638 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 1639 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 1640 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 1641 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 1642 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 1643 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 1644 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 1645 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 1646 ibdev->ib_dev.post_send = mlx4_ib_post_send; 1647 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 1648 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 1649 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 1650 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 1651 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 1652 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 1653 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 1654 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 1655 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 1656 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 1657 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 1658 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 1659 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 1660 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 1661 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 1662 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 1663 1664 if (!mlx4_is_slave(ibdev->dev)) { 1665 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 1666 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 1667 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 1668 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 1669 } 1670 1671 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 1672 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 1673 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 1674 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw; 1675 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 1676 1677 ibdev->ib_dev.uverbs_cmd_mask |= 1678 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 1679 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 1680 } 1681 1682 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 1683 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 1684 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 1685 ibdev->ib_dev.uverbs_cmd_mask |= 1686 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1687 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1688 } 1689 1690 if (check_flow_steering_support(dev)) { 1691 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 1692 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 1693 1694 ibdev->ib_dev.uverbs_cmd_mask |= 1695 (1ull << IB_USER_VERBS_CMD_CREATE_FLOW) | 1696 (1ull << IB_USER_VERBS_CMD_DESTROY_FLOW); 1697 } 1698 1699 mlx4_ib_alloc_eqs(dev, ibdev); 1700 1701 spin_lock_init(&iboe->lock); 1702 1703 if (init_node_data(ibdev)) 1704 goto err_map; 1705 1706 for (i = 0; i < ibdev->num_ports; ++i) { 1707 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 1708 IB_LINK_LAYER_ETHERNET) { 1709 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 1710 if (err) 1711 ibdev->counters[i] = -1; 1712 } else 1713 ibdev->counters[i] = -1; 1714 } 1715 1716 spin_lock_init(&ibdev->sm_lock); 1717 mutex_init(&ibdev->cap_mask_mutex); 1718 1719 if (ib_register_device(&ibdev->ib_dev, NULL)) 1720 goto err_counter; 1721 1722 if (mlx4_ib_mad_init(ibdev)) 1723 goto err_reg; 1724 1725 if (mlx4_ib_init_sriov(ibdev)) 1726 goto err_mad; 1727 1728 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { 1729 iboe->nb.notifier_call = mlx4_ib_netdev_event; 1730 err = register_netdevice_notifier(&iboe->nb); 1731 if (err) 1732 goto err_sriov; 1733 } 1734 1735 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 1736 if (device_create_file(&ibdev->ib_dev.dev, 1737 mlx4_class_attributes[j])) 1738 goto err_notif; 1739 } 1740 1741 ibdev->ib_active = true; 1742 1743 if (mlx4_is_mfunc(ibdev->dev)) 1744 init_pkeys(ibdev); 1745 1746 /* create paravirt contexts for any VFs which are active */ 1747 if (mlx4_is_master(ibdev->dev)) { 1748 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 1749 if (j == mlx4_master_func_num(ibdev->dev)) 1750 continue; 1751 if (mlx4_is_slave_active(ibdev->dev, j)) 1752 do_slave_init(ibdev, j, 1); 1753 } 1754 } 1755 return ibdev; 1756 1757 err_notif: 1758 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1759 pr_warn("failure unregistering notifier\n"); 1760 flush_workqueue(wq); 1761 1762 err_sriov: 1763 mlx4_ib_close_sriov(ibdev); 1764 1765 err_mad: 1766 mlx4_ib_mad_cleanup(ibdev); 1767 1768 err_reg: 1769 ib_unregister_device(&ibdev->ib_dev); 1770 1771 err_counter: 1772 for (; i; --i) 1773 if (ibdev->counters[i - 1] != -1) 1774 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 1775 1776 err_map: 1777 iounmap(ibdev->uar_map); 1778 1779 err_uar: 1780 mlx4_uar_free(dev, &ibdev->priv_uar); 1781 1782 err_pd: 1783 mlx4_pd_free(dev, ibdev->priv_pdn); 1784 1785 err_dealloc: 1786 ib_dealloc_device(&ibdev->ib_dev); 1787 1788 return NULL; 1789 } 1790 1791 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 1792 { 1793 struct mlx4_ib_dev *ibdev = ibdev_ptr; 1794 int p; 1795 1796 mlx4_ib_close_sriov(ibdev); 1797 mlx4_ib_mad_cleanup(ibdev); 1798 ib_unregister_device(&ibdev->ib_dev); 1799 if (ibdev->iboe.nb.notifier_call) { 1800 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1801 pr_warn("failure unregistering notifier\n"); 1802 ibdev->iboe.nb.notifier_call = NULL; 1803 } 1804 iounmap(ibdev->uar_map); 1805 for (p = 0; p < ibdev->num_ports; ++p) 1806 if (ibdev->counters[p] != -1) 1807 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 1808 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 1809 mlx4_CLOSE_PORT(dev, p); 1810 1811 mlx4_ib_free_eqs(dev, ibdev); 1812 1813 mlx4_uar_free(dev, &ibdev->priv_uar); 1814 mlx4_pd_free(dev, ibdev->priv_pdn); 1815 ib_dealloc_device(&ibdev->ib_dev); 1816 } 1817 1818 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 1819 { 1820 struct mlx4_ib_demux_work **dm = NULL; 1821 struct mlx4_dev *dev = ibdev->dev; 1822 int i; 1823 unsigned long flags; 1824 1825 if (!mlx4_is_master(dev)) 1826 return; 1827 1828 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC); 1829 if (!dm) { 1830 pr_err("failed to allocate memory for tunneling qp update\n"); 1831 goto out; 1832 } 1833 1834 for (i = 0; i < dev->caps.num_ports; i++) { 1835 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 1836 if (!dm[i]) { 1837 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 1838 for (i = 0; i < dev->caps.num_ports; i++) { 1839 if (dm[i]) 1840 kfree(dm[i]); 1841 } 1842 goto out; 1843 } 1844 } 1845 /* initialize or tear down tunnel QPs for the slave */ 1846 for (i = 0; i < dev->caps.num_ports; i++) { 1847 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 1848 dm[i]->port = i + 1; 1849 dm[i]->slave = slave; 1850 dm[i]->do_init = do_init; 1851 dm[i]->dev = ibdev; 1852 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 1853 if (!ibdev->sriov.is_going_down) 1854 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 1855 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 1856 } 1857 out: 1858 kfree(dm); 1859 return; 1860 } 1861 1862 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 1863 enum mlx4_dev_event event, unsigned long param) 1864 { 1865 struct ib_event ibev; 1866 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 1867 struct mlx4_eqe *eqe = NULL; 1868 struct ib_event_work *ew; 1869 int p = 0; 1870 1871 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 1872 eqe = (struct mlx4_eqe *)param; 1873 else 1874 p = (int) param; 1875 1876 switch (event) { 1877 case MLX4_DEV_EVENT_PORT_UP: 1878 if (p > ibdev->num_ports) 1879 return; 1880 if (mlx4_is_master(dev) && 1881 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 1882 IB_LINK_LAYER_INFINIBAND) { 1883 mlx4_ib_invalidate_all_guid_record(ibdev, p); 1884 } 1885 ibev.event = IB_EVENT_PORT_ACTIVE; 1886 break; 1887 1888 case MLX4_DEV_EVENT_PORT_DOWN: 1889 if (p > ibdev->num_ports) 1890 return; 1891 ibev.event = IB_EVENT_PORT_ERR; 1892 break; 1893 1894 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 1895 ibdev->ib_active = false; 1896 ibev.event = IB_EVENT_DEVICE_FATAL; 1897 break; 1898 1899 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 1900 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 1901 if (!ew) { 1902 pr_err("failed to allocate memory for events work\n"); 1903 break; 1904 } 1905 1906 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 1907 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 1908 ew->ib_dev = ibdev; 1909 /* need to queue only for port owner, which uses GEN_EQE */ 1910 if (mlx4_is_master(dev)) 1911 queue_work(wq, &ew->work); 1912 else 1913 handle_port_mgmt_change_event(&ew->work); 1914 return; 1915 1916 case MLX4_DEV_EVENT_SLAVE_INIT: 1917 /* here, p is the slave id */ 1918 do_slave_init(ibdev, p, 1); 1919 return; 1920 1921 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 1922 /* here, p is the slave id */ 1923 do_slave_init(ibdev, p, 0); 1924 return; 1925 1926 default: 1927 return; 1928 } 1929 1930 ibev.device = ibdev_ptr; 1931 ibev.element.port_num = (u8) p; 1932 1933 ib_dispatch_event(&ibev); 1934 } 1935 1936 static struct mlx4_interface mlx4_ib_interface = { 1937 .add = mlx4_ib_add, 1938 .remove = mlx4_ib_remove, 1939 .event = mlx4_ib_event, 1940 .protocol = MLX4_PROT_IB_IPV6 1941 }; 1942 1943 static int __init mlx4_ib_init(void) 1944 { 1945 int err; 1946 1947 wq = create_singlethread_workqueue("mlx4_ib"); 1948 if (!wq) 1949 return -ENOMEM; 1950 1951 err = mlx4_ib_mcg_init(); 1952 if (err) 1953 goto clean_wq; 1954 1955 err = mlx4_register_interface(&mlx4_ib_interface); 1956 if (err) 1957 goto clean_mcg; 1958 1959 return 0; 1960 1961 clean_mcg: 1962 mlx4_ib_mcg_destroy(); 1963 1964 clean_wq: 1965 destroy_workqueue(wq); 1966 return err; 1967 } 1968 1969 static void __exit mlx4_ib_cleanup(void) 1970 { 1971 mlx4_unregister_interface(&mlx4_ib_interface); 1972 mlx4_ib_mcg_destroy(); 1973 destroy_workqueue(wq); 1974 } 1975 1976 module_init(mlx4_ib_init); 1977 module_exit(mlx4_ib_cleanup); 1978