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" 54 #define DRV_VERSION "1.0" 55 #define DRV_RELDATE "April 4, 2008" 56 57 MODULE_AUTHOR("Roland Dreier"); 58 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 59 MODULE_LICENSE("Dual BSD/GPL"); 60 MODULE_VERSION(DRV_VERSION); 61 62 static const char mlx4_ib_version[] = 63 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 64 DRV_VERSION " (" DRV_RELDATE ")\n"; 65 66 struct update_gid_work { 67 struct work_struct work; 68 union ib_gid gids[128]; 69 struct mlx4_ib_dev *dev; 70 int port; 71 }; 72 73 static struct workqueue_struct *wq; 74 75 static void init_query_mad(struct ib_smp *mad) 76 { 77 mad->base_version = 1; 78 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 79 mad->class_version = 1; 80 mad->method = IB_MGMT_METHOD_GET; 81 } 82 83 static union ib_gid zgid; 84 85 static int mlx4_ib_query_device(struct ib_device *ibdev, 86 struct ib_device_attr *props) 87 { 88 struct mlx4_ib_dev *dev = to_mdev(ibdev); 89 struct ib_smp *in_mad = NULL; 90 struct ib_smp *out_mad = NULL; 91 int err = -ENOMEM; 92 93 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 94 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 95 if (!in_mad || !out_mad) 96 goto out; 97 98 init_query_mad(in_mad); 99 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 100 101 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); 102 if (err) 103 goto out; 104 105 memset(props, 0, sizeof *props); 106 107 props->fw_ver = dev->dev->caps.fw_ver; 108 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 109 IB_DEVICE_PORT_ACTIVE_EVENT | 110 IB_DEVICE_SYS_IMAGE_GUID | 111 IB_DEVICE_RC_RNR_NAK_GEN | 112 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 113 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 114 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 115 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 116 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 117 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 118 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 119 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 120 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 121 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 122 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 123 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) 124 props->device_cap_flags |= IB_DEVICE_UD_TSO; 125 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 126 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 127 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 128 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 129 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 130 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 131 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 132 props->device_cap_flags |= IB_DEVICE_XRC; 133 134 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 135 0xffffff; 136 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 137 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 138 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 139 140 props->max_mr_size = ~0ull; 141 props->page_size_cap = dev->dev->caps.page_size_cap; 142 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; 143 props->max_qp_wr = dev->dev->caps.max_wqes; 144 props->max_sge = min(dev->dev->caps.max_sq_sg, 145 dev->dev->caps.max_rq_sg); 146 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; 147 props->max_cqe = dev->dev->caps.max_cqes; 148 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; 149 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 150 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 151 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 152 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 153 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; 154 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 155 props->max_srq_sge = dev->dev->caps.max_srq_sge; 156 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 157 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 158 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 159 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 160 props->masked_atomic_cap = IB_ATOMIC_HCA; 161 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 162 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 163 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 164 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 165 props->max_mcast_grp; 166 props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1; 167 168 out: 169 kfree(in_mad); 170 kfree(out_mad); 171 172 return err; 173 } 174 175 static enum rdma_link_layer 176 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 177 { 178 struct mlx4_dev *dev = to_mdev(device)->dev; 179 180 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 181 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 182 } 183 184 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 185 struct ib_port_attr *props, 186 struct ib_smp *in_mad, 187 struct ib_smp *out_mad) 188 { 189 int ext_active_speed; 190 int err; 191 192 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 193 props->lmc = out_mad->data[34] & 0x7; 194 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 195 props->sm_sl = out_mad->data[36] & 0xf; 196 props->state = out_mad->data[32] & 0xf; 197 props->phys_state = out_mad->data[33] >> 4; 198 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 199 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 200 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 201 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 202 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 203 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 204 props->active_width = out_mad->data[31] & 0xf; 205 props->active_speed = out_mad->data[35] >> 4; 206 props->max_mtu = out_mad->data[41] & 0xf; 207 props->active_mtu = out_mad->data[36] >> 4; 208 props->subnet_timeout = out_mad->data[51] & 0x1f; 209 props->max_vl_num = out_mad->data[37] >> 4; 210 props->init_type_reply = out_mad->data[41] >> 4; 211 212 /* Check if extended speeds (EDR/FDR/...) are supported */ 213 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 214 ext_active_speed = out_mad->data[62] >> 4; 215 216 switch (ext_active_speed) { 217 case 1: 218 props->active_speed = 16; /* FDR */ 219 break; 220 case 2: 221 props->active_speed = 32; /* EDR */ 222 break; 223 } 224 } 225 226 /* If reported active speed is QDR, check if is FDR-10 */ 227 if (props->active_speed == 4) { 228 if (to_mdev(ibdev)->dev->caps.ext_port_cap[port] & 229 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 230 init_query_mad(in_mad); 231 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 232 in_mad->attr_mod = cpu_to_be32(port); 233 234 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, 235 NULL, NULL, in_mad, out_mad); 236 if (err) 237 return err; 238 239 /* Checking LinkSpeedActive for FDR-10 */ 240 if (out_mad->data[15] & 0x1) 241 props->active_speed = 8; 242 } 243 } 244 245 return 0; 246 } 247 248 static u8 state_to_phys_state(enum ib_port_state state) 249 { 250 return state == IB_PORT_ACTIVE ? 5 : 3; 251 } 252 253 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 254 struct ib_port_attr *props, 255 struct ib_smp *out_mad) 256 { 257 struct mlx4_ib_iboe *iboe = &to_mdev(ibdev)->iboe; 258 struct net_device *ndev; 259 enum ib_mtu tmp; 260 261 props->active_width = IB_WIDTH_1X; 262 props->active_speed = 4; 263 props->port_cap_flags = IB_PORT_CM_SUP; 264 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 265 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 266 props->pkey_tbl_len = 1; 267 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 268 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 269 props->max_mtu = IB_MTU_4096; 270 props->subnet_timeout = 0; 271 props->max_vl_num = out_mad->data[37] >> 4; 272 props->init_type_reply = 0; 273 props->state = IB_PORT_DOWN; 274 props->phys_state = state_to_phys_state(props->state); 275 props->active_mtu = IB_MTU_256; 276 spin_lock(&iboe->lock); 277 ndev = iboe->netdevs[port - 1]; 278 if (!ndev) 279 goto out; 280 281 tmp = iboe_get_mtu(ndev->mtu); 282 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 283 284 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 285 IB_PORT_ACTIVE : IB_PORT_DOWN; 286 props->phys_state = state_to_phys_state(props->state); 287 288 out: 289 spin_unlock(&iboe->lock); 290 return 0; 291 } 292 293 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 294 struct ib_port_attr *props) 295 { 296 struct ib_smp *in_mad = NULL; 297 struct ib_smp *out_mad = NULL; 298 int err = -ENOMEM; 299 300 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 301 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 302 if (!in_mad || !out_mad) 303 goto out; 304 305 memset(props, 0, sizeof *props); 306 307 init_query_mad(in_mad); 308 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 309 in_mad->attr_mod = cpu_to_be32(port); 310 311 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 312 if (err) 313 goto out; 314 315 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 316 ib_link_query_port(ibdev, port, props, in_mad, out_mad) : 317 eth_link_query_port(ibdev, port, props, out_mad); 318 319 out: 320 kfree(in_mad); 321 kfree(out_mad); 322 323 return err; 324 } 325 326 static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 327 union ib_gid *gid) 328 { 329 struct ib_smp *in_mad = NULL; 330 struct ib_smp *out_mad = NULL; 331 int err = -ENOMEM; 332 333 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 334 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 335 if (!in_mad || !out_mad) 336 goto out; 337 338 init_query_mad(in_mad); 339 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 340 in_mad->attr_mod = cpu_to_be32(port); 341 342 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 343 if (err) 344 goto out; 345 346 memcpy(gid->raw, out_mad->data + 8, 8); 347 348 init_query_mad(in_mad); 349 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 350 in_mad->attr_mod = cpu_to_be32(index / 8); 351 352 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 353 if (err) 354 goto out; 355 356 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 357 358 out: 359 kfree(in_mad); 360 kfree(out_mad); 361 return err; 362 } 363 364 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 365 union ib_gid *gid) 366 { 367 struct mlx4_ib_dev *dev = to_mdev(ibdev); 368 369 *gid = dev->iboe.gid_table[port - 1][index]; 370 371 return 0; 372 } 373 374 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 375 union ib_gid *gid) 376 { 377 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 378 return __mlx4_ib_query_gid(ibdev, port, index, gid); 379 else 380 return iboe_query_gid(ibdev, port, index, gid); 381 } 382 383 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 384 u16 *pkey) 385 { 386 struct ib_smp *in_mad = NULL; 387 struct ib_smp *out_mad = NULL; 388 int err = -ENOMEM; 389 390 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 391 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 392 if (!in_mad || !out_mad) 393 goto out; 394 395 init_query_mad(in_mad); 396 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 397 in_mad->attr_mod = cpu_to_be32(index / 32); 398 399 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 400 if (err) 401 goto out; 402 403 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 404 405 out: 406 kfree(in_mad); 407 kfree(out_mad); 408 return err; 409 } 410 411 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 412 struct ib_device_modify *props) 413 { 414 struct mlx4_cmd_mailbox *mailbox; 415 416 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 417 return -EOPNOTSUPP; 418 419 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 420 return 0; 421 422 spin_lock(&to_mdev(ibdev)->sm_lock); 423 memcpy(ibdev->node_desc, props->node_desc, 64); 424 spin_unlock(&to_mdev(ibdev)->sm_lock); 425 426 /* 427 * If possible, pass node desc to FW, so it can generate 428 * a 144 trap. If cmd fails, just ignore. 429 */ 430 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 431 if (IS_ERR(mailbox)) 432 return 0; 433 434 memset(mailbox->buf, 0, 256); 435 memcpy(mailbox->buf, props->node_desc, 64); 436 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 437 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); 438 439 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 440 441 return 0; 442 } 443 444 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 445 u32 cap_mask) 446 { 447 struct mlx4_cmd_mailbox *mailbox; 448 int err; 449 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 450 451 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 452 if (IS_ERR(mailbox)) 453 return PTR_ERR(mailbox); 454 455 memset(mailbox->buf, 0, 256); 456 457 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 458 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 459 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 460 } else { 461 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 462 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 463 } 464 465 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, 466 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 467 468 mlx4_free_cmd_mailbox(dev->dev, mailbox); 469 return err; 470 } 471 472 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 473 struct ib_port_modify *props) 474 { 475 struct ib_port_attr attr; 476 u32 cap_mask; 477 int err; 478 479 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 480 481 err = mlx4_ib_query_port(ibdev, port, &attr); 482 if (err) 483 goto out; 484 485 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 486 ~props->clr_port_cap_mask; 487 488 err = mlx4_SET_PORT(to_mdev(ibdev), port, 489 !!(mask & IB_PORT_RESET_QKEY_CNTR), 490 cap_mask); 491 492 out: 493 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 494 return err; 495 } 496 497 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 498 struct ib_udata *udata) 499 { 500 struct mlx4_ib_dev *dev = to_mdev(ibdev); 501 struct mlx4_ib_ucontext *context; 502 struct mlx4_ib_alloc_ucontext_resp resp; 503 int err; 504 505 if (!dev->ib_active) 506 return ERR_PTR(-EAGAIN); 507 508 resp.qp_tab_size = dev->dev->caps.num_qps; 509 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 510 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 511 512 context = kmalloc(sizeof *context, GFP_KERNEL); 513 if (!context) 514 return ERR_PTR(-ENOMEM); 515 516 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 517 if (err) { 518 kfree(context); 519 return ERR_PTR(err); 520 } 521 522 INIT_LIST_HEAD(&context->db_page_list); 523 mutex_init(&context->db_page_mutex); 524 525 err = ib_copy_to_udata(udata, &resp, sizeof resp); 526 if (err) { 527 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 528 kfree(context); 529 return ERR_PTR(-EFAULT); 530 } 531 532 return &context->ibucontext; 533 } 534 535 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 536 { 537 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 538 539 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 540 kfree(context); 541 542 return 0; 543 } 544 545 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 546 { 547 struct mlx4_ib_dev *dev = to_mdev(context->device); 548 549 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 550 return -EINVAL; 551 552 if (vma->vm_pgoff == 0) { 553 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 554 555 if (io_remap_pfn_range(vma, vma->vm_start, 556 to_mucontext(context)->uar.pfn, 557 PAGE_SIZE, vma->vm_page_prot)) 558 return -EAGAIN; 559 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 560 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 561 562 if (io_remap_pfn_range(vma, vma->vm_start, 563 to_mucontext(context)->uar.pfn + 564 dev->dev->caps.num_uars, 565 PAGE_SIZE, vma->vm_page_prot)) 566 return -EAGAIN; 567 } else 568 return -EINVAL; 569 570 return 0; 571 } 572 573 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 574 struct ib_ucontext *context, 575 struct ib_udata *udata) 576 { 577 struct mlx4_ib_pd *pd; 578 int err; 579 580 pd = kmalloc(sizeof *pd, GFP_KERNEL); 581 if (!pd) 582 return ERR_PTR(-ENOMEM); 583 584 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 585 if (err) { 586 kfree(pd); 587 return ERR_PTR(err); 588 } 589 590 if (context) 591 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 592 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 593 kfree(pd); 594 return ERR_PTR(-EFAULT); 595 } 596 597 return &pd->ibpd; 598 } 599 600 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 601 { 602 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 603 kfree(pd); 604 605 return 0; 606 } 607 608 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 609 struct ib_ucontext *context, 610 struct ib_udata *udata) 611 { 612 struct mlx4_ib_xrcd *xrcd; 613 int err; 614 615 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 616 return ERR_PTR(-ENOSYS); 617 618 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 619 if (!xrcd) 620 return ERR_PTR(-ENOMEM); 621 622 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 623 if (err) 624 goto err1; 625 626 xrcd->pd = ib_alloc_pd(ibdev); 627 if (IS_ERR(xrcd->pd)) { 628 err = PTR_ERR(xrcd->pd); 629 goto err2; 630 } 631 632 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 633 if (IS_ERR(xrcd->cq)) { 634 err = PTR_ERR(xrcd->cq); 635 goto err3; 636 } 637 638 return &xrcd->ibxrcd; 639 640 err3: 641 ib_dealloc_pd(xrcd->pd); 642 err2: 643 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 644 err1: 645 kfree(xrcd); 646 return ERR_PTR(err); 647 } 648 649 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 650 { 651 ib_destroy_cq(to_mxrcd(xrcd)->cq); 652 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 653 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 654 kfree(xrcd); 655 656 return 0; 657 } 658 659 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 660 { 661 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 662 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 663 struct mlx4_ib_gid_entry *ge; 664 665 ge = kzalloc(sizeof *ge, GFP_KERNEL); 666 if (!ge) 667 return -ENOMEM; 668 669 ge->gid = *gid; 670 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 671 ge->port = mqp->port; 672 ge->added = 1; 673 } 674 675 mutex_lock(&mqp->mutex); 676 list_add_tail(&ge->list, &mqp->gid_list); 677 mutex_unlock(&mqp->mutex); 678 679 return 0; 680 } 681 682 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 683 union ib_gid *gid) 684 { 685 u8 mac[6]; 686 struct net_device *ndev; 687 int ret = 0; 688 689 if (!mqp->port) 690 return 0; 691 692 spin_lock(&mdev->iboe.lock); 693 ndev = mdev->iboe.netdevs[mqp->port - 1]; 694 if (ndev) 695 dev_hold(ndev); 696 spin_unlock(&mdev->iboe.lock); 697 698 if (ndev) { 699 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 700 rtnl_lock(); 701 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); 702 ret = 1; 703 rtnl_unlock(); 704 dev_put(ndev); 705 } 706 707 return ret; 708 } 709 710 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 711 { 712 int err; 713 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 714 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 715 716 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 717 !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 718 MLX4_PROT_IB_IPV6); 719 if (err) 720 return err; 721 722 err = add_gid_entry(ibqp, gid); 723 if (err) 724 goto err_add; 725 726 return 0; 727 728 err_add: 729 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6); 730 return err; 731 } 732 733 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 734 { 735 struct mlx4_ib_gid_entry *ge; 736 struct mlx4_ib_gid_entry *tmp; 737 struct mlx4_ib_gid_entry *ret = NULL; 738 739 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 740 if (!memcmp(raw, ge->gid.raw, 16)) { 741 ret = ge; 742 break; 743 } 744 } 745 746 return ret; 747 } 748 749 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 750 { 751 int err; 752 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 753 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 754 u8 mac[6]; 755 struct net_device *ndev; 756 struct mlx4_ib_gid_entry *ge; 757 758 err = mlx4_multicast_detach(mdev->dev, 759 &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6); 760 if (err) 761 return err; 762 763 mutex_lock(&mqp->mutex); 764 ge = find_gid_entry(mqp, gid->raw); 765 if (ge) { 766 spin_lock(&mdev->iboe.lock); 767 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 768 if (ndev) 769 dev_hold(ndev); 770 spin_unlock(&mdev->iboe.lock); 771 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 772 if (ndev) { 773 rtnl_lock(); 774 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); 775 rtnl_unlock(); 776 dev_put(ndev); 777 } 778 list_del(&ge->list); 779 kfree(ge); 780 } else 781 printk(KERN_WARNING "could not find mgid entry\n"); 782 783 mutex_unlock(&mqp->mutex); 784 785 return 0; 786 } 787 788 static int init_node_data(struct mlx4_ib_dev *dev) 789 { 790 struct ib_smp *in_mad = NULL; 791 struct ib_smp *out_mad = NULL; 792 int err = -ENOMEM; 793 794 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 795 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 796 if (!in_mad || !out_mad) 797 goto out; 798 799 init_query_mad(in_mad); 800 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 801 802 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 803 if (err) 804 goto out; 805 806 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 807 808 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 809 810 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 811 if (err) 812 goto out; 813 814 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 815 816 out: 817 kfree(in_mad); 818 kfree(out_mad); 819 return err; 820 } 821 822 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 823 char *buf) 824 { 825 struct mlx4_ib_dev *dev = 826 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 827 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 828 } 829 830 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 831 char *buf) 832 { 833 struct mlx4_ib_dev *dev = 834 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 835 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 836 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 837 (int) dev->dev->caps.fw_ver & 0xffff); 838 } 839 840 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 841 char *buf) 842 { 843 struct mlx4_ib_dev *dev = 844 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 845 return sprintf(buf, "%x\n", dev->dev->rev_id); 846 } 847 848 static ssize_t show_board(struct device *device, struct device_attribute *attr, 849 char *buf) 850 { 851 struct mlx4_ib_dev *dev = 852 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 853 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 854 dev->dev->board_id); 855 } 856 857 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 858 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 859 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 860 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 861 862 static struct device_attribute *mlx4_class_attributes[] = { 863 &dev_attr_hw_rev, 864 &dev_attr_fw_ver, 865 &dev_attr_hca_type, 866 &dev_attr_board_id 867 }; 868 869 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) 870 { 871 memcpy(eui, dev->dev_addr, 3); 872 memcpy(eui + 5, dev->dev_addr + 3, 3); 873 if (vlan_id < 0x1000) { 874 eui[3] = vlan_id >> 8; 875 eui[4] = vlan_id & 0xff; 876 } else { 877 eui[3] = 0xff; 878 eui[4] = 0xfe; 879 } 880 eui[0] ^= 2; 881 } 882 883 static void update_gids_task(struct work_struct *work) 884 { 885 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 886 struct mlx4_cmd_mailbox *mailbox; 887 union ib_gid *gids; 888 int err; 889 struct mlx4_dev *dev = gw->dev->dev; 890 struct ib_event event; 891 892 mailbox = mlx4_alloc_cmd_mailbox(dev); 893 if (IS_ERR(mailbox)) { 894 printk(KERN_WARNING "update gid table failed %ld\n", PTR_ERR(mailbox)); 895 return; 896 } 897 898 gids = mailbox->buf; 899 memcpy(gids, gw->gids, sizeof gw->gids); 900 901 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 902 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 903 MLX4_CMD_NATIVE); 904 if (err) 905 printk(KERN_WARNING "set port command failed\n"); 906 else { 907 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); 908 event.device = &gw->dev->ib_dev; 909 event.element.port_num = gw->port; 910 event.event = IB_EVENT_GID_CHANGE; 911 ib_dispatch_event(&event); 912 } 913 914 mlx4_free_cmd_mailbox(dev, mailbox); 915 kfree(gw); 916 } 917 918 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) 919 { 920 struct net_device *ndev = dev->iboe.netdevs[port - 1]; 921 struct update_gid_work *work; 922 struct net_device *tmp; 923 int i; 924 u8 *hits; 925 int ret; 926 union ib_gid gid; 927 int free; 928 int found; 929 int need_update = 0; 930 u16 vid; 931 932 work = kzalloc(sizeof *work, GFP_ATOMIC); 933 if (!work) 934 return -ENOMEM; 935 936 hits = kzalloc(128, GFP_ATOMIC); 937 if (!hits) { 938 ret = -ENOMEM; 939 goto out; 940 } 941 942 rcu_read_lock(); 943 for_each_netdev_rcu(&init_net, tmp) { 944 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { 945 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 946 vid = rdma_vlan_dev_vlan_id(tmp); 947 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); 948 found = 0; 949 free = -1; 950 for (i = 0; i < 128; ++i) { 951 if (free < 0 && 952 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 953 free = i; 954 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { 955 hits[i] = 1; 956 found = 1; 957 break; 958 } 959 } 960 961 if (!found) { 962 if (tmp == ndev && 963 (memcmp(&dev->iboe.gid_table[port - 1][0], 964 &gid, sizeof gid) || 965 !memcmp(&dev->iboe.gid_table[port - 1][0], 966 &zgid, sizeof gid))) { 967 dev->iboe.gid_table[port - 1][0] = gid; 968 ++need_update; 969 hits[0] = 1; 970 } else if (free >= 0) { 971 dev->iboe.gid_table[port - 1][free] = gid; 972 hits[free] = 1; 973 ++need_update; 974 } 975 } 976 } 977 } 978 rcu_read_unlock(); 979 980 for (i = 0; i < 128; ++i) 981 if (!hits[i]) { 982 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 983 ++need_update; 984 dev->iboe.gid_table[port - 1][i] = zgid; 985 } 986 987 if (need_update) { 988 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); 989 INIT_WORK(&work->work, update_gids_task); 990 work->port = port; 991 work->dev = dev; 992 queue_work(wq, &work->work); 993 } else 994 kfree(work); 995 996 kfree(hits); 997 return 0; 998 999 out: 1000 kfree(work); 1001 return ret; 1002 } 1003 1004 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) 1005 { 1006 switch (event) { 1007 case NETDEV_UP: 1008 case NETDEV_CHANGEADDR: 1009 update_ipv6_gids(dev, port, 0); 1010 break; 1011 1012 case NETDEV_DOWN: 1013 update_ipv6_gids(dev, port, 1); 1014 dev->iboe.netdevs[port - 1] = NULL; 1015 } 1016 } 1017 1018 static void netdev_added(struct mlx4_ib_dev *dev, int port) 1019 { 1020 update_ipv6_gids(dev, port, 0); 1021 } 1022 1023 static void netdev_removed(struct mlx4_ib_dev *dev, int port) 1024 { 1025 update_ipv6_gids(dev, port, 1); 1026 } 1027 1028 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, 1029 void *ptr) 1030 { 1031 struct net_device *dev = ptr; 1032 struct mlx4_ib_dev *ibdev; 1033 struct net_device *oldnd; 1034 struct mlx4_ib_iboe *iboe; 1035 int port; 1036 1037 if (!net_eq(dev_net(dev), &init_net)) 1038 return NOTIFY_DONE; 1039 1040 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1041 iboe = &ibdev->iboe; 1042 1043 spin_lock(&iboe->lock); 1044 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1045 oldnd = iboe->netdevs[port - 1]; 1046 iboe->netdevs[port - 1] = 1047 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1048 if (oldnd != iboe->netdevs[port - 1]) { 1049 if (iboe->netdevs[port - 1]) 1050 netdev_added(ibdev, port); 1051 else 1052 netdev_removed(ibdev, port); 1053 } 1054 } 1055 1056 if (dev == iboe->netdevs[0] || 1057 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) 1058 handle_en_event(ibdev, 1, event); 1059 else if (dev == iboe->netdevs[1] 1060 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) 1061 handle_en_event(ibdev, 2, event); 1062 1063 spin_unlock(&iboe->lock); 1064 1065 return NOTIFY_DONE; 1066 } 1067 1068 static void *mlx4_ib_add(struct mlx4_dev *dev) 1069 { 1070 struct mlx4_ib_dev *ibdev; 1071 int num_ports = 0; 1072 int i; 1073 int err; 1074 struct mlx4_ib_iboe *iboe; 1075 1076 printk_once(KERN_INFO "%s", mlx4_ib_version); 1077 1078 if (mlx4_is_mfunc(dev)) { 1079 printk(KERN_WARNING "IB not yet supported in SRIOV\n"); 1080 return NULL; 1081 } 1082 1083 mlx4_foreach_ib_transport_port(i, dev) 1084 num_ports++; 1085 1086 /* No point in registering a device with no ports... */ 1087 if (num_ports == 0) 1088 return NULL; 1089 1090 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 1091 if (!ibdev) { 1092 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 1093 return NULL; 1094 } 1095 1096 iboe = &ibdev->iboe; 1097 1098 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 1099 goto err_dealloc; 1100 1101 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 1102 goto err_pd; 1103 1104 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 1105 PAGE_SIZE); 1106 if (!ibdev->uar_map) 1107 goto err_uar; 1108 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 1109 1110 ibdev->dev = dev; 1111 1112 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 1113 ibdev->ib_dev.owner = THIS_MODULE; 1114 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 1115 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 1116 ibdev->num_ports = num_ports; 1117 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 1118 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1119 ibdev->ib_dev.dma_device = &dev->pdev->dev; 1120 1121 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 1122 ibdev->ib_dev.uverbs_cmd_mask = 1123 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1124 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1125 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1126 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1127 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1128 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1129 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1130 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1131 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1132 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1133 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1134 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1135 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1136 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1137 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1138 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1139 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1140 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1141 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1142 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1143 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1144 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1145 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1146 1147 ibdev->ib_dev.query_device = mlx4_ib_query_device; 1148 ibdev->ib_dev.query_port = mlx4_ib_query_port; 1149 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 1150 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 1151 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 1152 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 1153 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 1154 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 1155 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 1156 ibdev->ib_dev.mmap = mlx4_ib_mmap; 1157 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 1158 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 1159 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 1160 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 1161 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 1162 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 1163 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 1164 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 1165 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 1166 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 1167 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 1168 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 1169 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 1170 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 1171 ibdev->ib_dev.post_send = mlx4_ib_post_send; 1172 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 1173 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 1174 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 1175 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 1176 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 1177 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 1178 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 1179 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 1180 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 1181 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 1182 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 1183 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 1184 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 1185 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 1186 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 1187 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 1188 1189 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 1190 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 1191 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 1192 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 1193 1194 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 1195 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 1196 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 1197 ibdev->ib_dev.uverbs_cmd_mask |= 1198 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1199 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1200 } 1201 1202 spin_lock_init(&iboe->lock); 1203 1204 if (init_node_data(ibdev)) 1205 goto err_map; 1206 1207 for (i = 0; i < ibdev->num_ports; ++i) { 1208 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 1209 IB_LINK_LAYER_ETHERNET) { 1210 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 1211 if (err) 1212 ibdev->counters[i] = -1; 1213 } else 1214 ibdev->counters[i] = -1; 1215 } 1216 1217 spin_lock_init(&ibdev->sm_lock); 1218 mutex_init(&ibdev->cap_mask_mutex); 1219 1220 if (ib_register_device(&ibdev->ib_dev, NULL)) 1221 goto err_counter; 1222 1223 if (mlx4_ib_mad_init(ibdev)) 1224 goto err_reg; 1225 1226 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { 1227 iboe->nb.notifier_call = mlx4_ib_netdev_event; 1228 err = register_netdevice_notifier(&iboe->nb); 1229 if (err) 1230 goto err_reg; 1231 } 1232 1233 for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) { 1234 if (device_create_file(&ibdev->ib_dev.dev, 1235 mlx4_class_attributes[i])) 1236 goto err_notif; 1237 } 1238 1239 ibdev->ib_active = true; 1240 1241 return ibdev; 1242 1243 err_notif: 1244 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1245 printk(KERN_WARNING "failure unregistering notifier\n"); 1246 flush_workqueue(wq); 1247 1248 err_reg: 1249 ib_unregister_device(&ibdev->ib_dev); 1250 1251 err_counter: 1252 for (; i; --i) 1253 if (ibdev->counters[i - 1] != -1) 1254 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 1255 1256 err_map: 1257 iounmap(ibdev->uar_map); 1258 1259 err_uar: 1260 mlx4_uar_free(dev, &ibdev->priv_uar); 1261 1262 err_pd: 1263 mlx4_pd_free(dev, ibdev->priv_pdn); 1264 1265 err_dealloc: 1266 ib_dealloc_device(&ibdev->ib_dev); 1267 1268 return NULL; 1269 } 1270 1271 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 1272 { 1273 struct mlx4_ib_dev *ibdev = ibdev_ptr; 1274 int p; 1275 1276 mlx4_ib_mad_cleanup(ibdev); 1277 ib_unregister_device(&ibdev->ib_dev); 1278 if (ibdev->iboe.nb.notifier_call) { 1279 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1280 printk(KERN_WARNING "failure unregistering notifier\n"); 1281 ibdev->iboe.nb.notifier_call = NULL; 1282 } 1283 iounmap(ibdev->uar_map); 1284 for (p = 0; p < ibdev->num_ports; ++p) 1285 if (ibdev->counters[p] != -1) 1286 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 1287 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 1288 mlx4_CLOSE_PORT(dev, p); 1289 1290 mlx4_uar_free(dev, &ibdev->priv_uar); 1291 mlx4_pd_free(dev, ibdev->priv_pdn); 1292 ib_dealloc_device(&ibdev->ib_dev); 1293 } 1294 1295 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 1296 enum mlx4_dev_event event, int port) 1297 { 1298 struct ib_event ibev; 1299 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 1300 1301 if (port > ibdev->num_ports) 1302 return; 1303 1304 switch (event) { 1305 case MLX4_DEV_EVENT_PORT_UP: 1306 ibev.event = IB_EVENT_PORT_ACTIVE; 1307 break; 1308 1309 case MLX4_DEV_EVENT_PORT_DOWN: 1310 ibev.event = IB_EVENT_PORT_ERR; 1311 break; 1312 1313 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 1314 ibdev->ib_active = false; 1315 ibev.event = IB_EVENT_DEVICE_FATAL; 1316 break; 1317 1318 default: 1319 return; 1320 } 1321 1322 ibev.device = ibdev_ptr; 1323 ibev.element.port_num = port; 1324 1325 ib_dispatch_event(&ibev); 1326 } 1327 1328 static struct mlx4_interface mlx4_ib_interface = { 1329 .add = mlx4_ib_add, 1330 .remove = mlx4_ib_remove, 1331 .event = mlx4_ib_event, 1332 .protocol = MLX4_PROT_IB_IPV6 1333 }; 1334 1335 static int __init mlx4_ib_init(void) 1336 { 1337 int err; 1338 1339 wq = create_singlethread_workqueue("mlx4_ib"); 1340 if (!wq) 1341 return -ENOMEM; 1342 1343 err = mlx4_register_interface(&mlx4_ib_interface); 1344 if (err) { 1345 destroy_workqueue(wq); 1346 return err; 1347 } 1348 1349 return 0; 1350 } 1351 1352 static void __exit mlx4_ib_cleanup(void) 1353 { 1354 mlx4_unregister_interface(&mlx4_ib_interface); 1355 destroy_workqueue(wq); 1356 } 1357 1358 module_init(mlx4_ib_init); 1359 module_exit(mlx4_ib_cleanup); 1360