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 39 #include <rdma/ib_smi.h> 40 #include <rdma/ib_user_verbs.h> 41 42 #include <linux/mlx4/driver.h> 43 #include <linux/mlx4/cmd.h> 44 45 #include "mlx4_ib.h" 46 #include "user.h" 47 48 #define DRV_NAME "mlx4_ib" 49 #define DRV_VERSION "1.0" 50 #define DRV_RELDATE "April 4, 2008" 51 52 MODULE_AUTHOR("Roland Dreier"); 53 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 54 MODULE_LICENSE("Dual BSD/GPL"); 55 MODULE_VERSION(DRV_VERSION); 56 57 static const char mlx4_ib_version[] = 58 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 59 DRV_VERSION " (" DRV_RELDATE ")\n"; 60 61 static void init_query_mad(struct ib_smp *mad) 62 { 63 mad->base_version = 1; 64 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 65 mad->class_version = 1; 66 mad->method = IB_MGMT_METHOD_GET; 67 } 68 69 static int mlx4_ib_query_device(struct ib_device *ibdev, 70 struct ib_device_attr *props) 71 { 72 struct mlx4_ib_dev *dev = to_mdev(ibdev); 73 struct ib_smp *in_mad = NULL; 74 struct ib_smp *out_mad = NULL; 75 int err = -ENOMEM; 76 77 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 78 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 79 if (!in_mad || !out_mad) 80 goto out; 81 82 init_query_mad(in_mad); 83 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 84 85 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); 86 if (err) 87 goto out; 88 89 memset(props, 0, sizeof *props); 90 91 props->fw_ver = dev->dev->caps.fw_ver; 92 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 93 IB_DEVICE_PORT_ACTIVE_EVENT | 94 IB_DEVICE_SYS_IMAGE_GUID | 95 IB_DEVICE_RC_RNR_NAK_GEN | 96 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 97 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 98 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 99 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 100 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 101 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 102 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 103 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 104 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 105 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 106 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 107 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) 108 props->device_cap_flags |= IB_DEVICE_UD_TSO; 109 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 110 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 111 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 112 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 113 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 114 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 115 116 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 117 0xffffff; 118 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 119 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 120 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 121 122 props->max_mr_size = ~0ull; 123 props->page_size_cap = dev->dev->caps.page_size_cap; 124 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; 125 props->max_qp_wr = dev->dev->caps.max_wqes; 126 props->max_sge = min(dev->dev->caps.max_sq_sg, 127 dev->dev->caps.max_rq_sg); 128 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; 129 props->max_cqe = dev->dev->caps.max_cqes; 130 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; 131 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 132 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 133 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 134 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 135 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; 136 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 137 props->max_srq_sge = dev->dev->caps.max_srq_sge; 138 props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64); 139 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 140 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 141 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 142 props->masked_atomic_cap = IB_ATOMIC_HCA; 143 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 144 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 145 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 146 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 147 props->max_mcast_grp; 148 props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1; 149 150 out: 151 kfree(in_mad); 152 kfree(out_mad); 153 154 return err; 155 } 156 157 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 158 struct ib_port_attr *props) 159 { 160 struct ib_smp *in_mad = NULL; 161 struct ib_smp *out_mad = NULL; 162 int err = -ENOMEM; 163 164 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 165 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 166 if (!in_mad || !out_mad) 167 goto out; 168 169 memset(props, 0, sizeof *props); 170 171 init_query_mad(in_mad); 172 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 173 in_mad->attr_mod = cpu_to_be32(port); 174 175 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 176 if (err) 177 goto out; 178 179 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 180 props->lmc = out_mad->data[34] & 0x7; 181 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 182 props->sm_sl = out_mad->data[36] & 0xf; 183 props->state = out_mad->data[32] & 0xf; 184 props->phys_state = out_mad->data[33] >> 4; 185 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 186 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 187 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 188 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 189 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 190 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 191 props->active_width = out_mad->data[31] & 0xf; 192 props->active_speed = out_mad->data[35] >> 4; 193 props->max_mtu = out_mad->data[41] & 0xf; 194 props->active_mtu = out_mad->data[36] >> 4; 195 props->subnet_timeout = out_mad->data[51] & 0x1f; 196 props->max_vl_num = out_mad->data[37] >> 4; 197 props->init_type_reply = out_mad->data[41] >> 4; 198 199 out: 200 kfree(in_mad); 201 kfree(out_mad); 202 203 return err; 204 } 205 206 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 207 union ib_gid *gid) 208 { 209 struct ib_smp *in_mad = NULL; 210 struct ib_smp *out_mad = NULL; 211 int err = -ENOMEM; 212 213 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 214 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 215 if (!in_mad || !out_mad) 216 goto out; 217 218 init_query_mad(in_mad); 219 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 220 in_mad->attr_mod = cpu_to_be32(port); 221 222 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 223 if (err) 224 goto out; 225 226 memcpy(gid->raw, out_mad->data + 8, 8); 227 228 init_query_mad(in_mad); 229 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 230 in_mad->attr_mod = cpu_to_be32(index / 8); 231 232 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 233 if (err) 234 goto out; 235 236 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 237 238 out: 239 kfree(in_mad); 240 kfree(out_mad); 241 return err; 242 } 243 244 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 245 u16 *pkey) 246 { 247 struct ib_smp *in_mad = NULL; 248 struct ib_smp *out_mad = NULL; 249 int err = -ENOMEM; 250 251 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 252 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 253 if (!in_mad || !out_mad) 254 goto out; 255 256 init_query_mad(in_mad); 257 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 258 in_mad->attr_mod = cpu_to_be32(index / 32); 259 260 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 261 if (err) 262 goto out; 263 264 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 265 266 out: 267 kfree(in_mad); 268 kfree(out_mad); 269 return err; 270 } 271 272 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 273 struct ib_device_modify *props) 274 { 275 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 276 return -EOPNOTSUPP; 277 278 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 279 spin_lock(&to_mdev(ibdev)->sm_lock); 280 memcpy(ibdev->node_desc, props->node_desc, 64); 281 spin_unlock(&to_mdev(ibdev)->sm_lock); 282 } 283 284 return 0; 285 } 286 287 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 288 u32 cap_mask) 289 { 290 struct mlx4_cmd_mailbox *mailbox; 291 int err; 292 293 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 294 if (IS_ERR(mailbox)) 295 return PTR_ERR(mailbox); 296 297 memset(mailbox->buf, 0, 256); 298 299 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 300 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 301 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 302 } else { 303 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 304 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 305 } 306 307 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT, 308 MLX4_CMD_TIME_CLASS_B); 309 310 mlx4_free_cmd_mailbox(dev->dev, mailbox); 311 return err; 312 } 313 314 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 315 struct ib_port_modify *props) 316 { 317 struct ib_port_attr attr; 318 u32 cap_mask; 319 int err; 320 321 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 322 323 err = mlx4_ib_query_port(ibdev, port, &attr); 324 if (err) 325 goto out; 326 327 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 328 ~props->clr_port_cap_mask; 329 330 err = mlx4_SET_PORT(to_mdev(ibdev), port, 331 !!(mask & IB_PORT_RESET_QKEY_CNTR), 332 cap_mask); 333 334 out: 335 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 336 return err; 337 } 338 339 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 340 struct ib_udata *udata) 341 { 342 struct mlx4_ib_dev *dev = to_mdev(ibdev); 343 struct mlx4_ib_ucontext *context; 344 struct mlx4_ib_alloc_ucontext_resp resp; 345 int err; 346 347 if (!dev->ib_active) 348 return ERR_PTR(-EAGAIN); 349 350 resp.qp_tab_size = dev->dev->caps.num_qps; 351 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 352 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 353 354 context = kmalloc(sizeof *context, GFP_KERNEL); 355 if (!context) 356 return ERR_PTR(-ENOMEM); 357 358 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 359 if (err) { 360 kfree(context); 361 return ERR_PTR(err); 362 } 363 364 INIT_LIST_HEAD(&context->db_page_list); 365 mutex_init(&context->db_page_mutex); 366 367 err = ib_copy_to_udata(udata, &resp, sizeof resp); 368 if (err) { 369 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 370 kfree(context); 371 return ERR_PTR(-EFAULT); 372 } 373 374 return &context->ibucontext; 375 } 376 377 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 378 { 379 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 380 381 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 382 kfree(context); 383 384 return 0; 385 } 386 387 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 388 { 389 struct mlx4_ib_dev *dev = to_mdev(context->device); 390 391 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 392 return -EINVAL; 393 394 if (vma->vm_pgoff == 0) { 395 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 396 397 if (io_remap_pfn_range(vma, vma->vm_start, 398 to_mucontext(context)->uar.pfn, 399 PAGE_SIZE, vma->vm_page_prot)) 400 return -EAGAIN; 401 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 402 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 403 404 if (io_remap_pfn_range(vma, vma->vm_start, 405 to_mucontext(context)->uar.pfn + 406 dev->dev->caps.num_uars, 407 PAGE_SIZE, vma->vm_page_prot)) 408 return -EAGAIN; 409 } else 410 return -EINVAL; 411 412 return 0; 413 } 414 415 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 416 struct ib_ucontext *context, 417 struct ib_udata *udata) 418 { 419 struct mlx4_ib_pd *pd; 420 int err; 421 422 pd = kmalloc(sizeof *pd, GFP_KERNEL); 423 if (!pd) 424 return ERR_PTR(-ENOMEM); 425 426 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 427 if (err) { 428 kfree(pd); 429 return ERR_PTR(err); 430 } 431 432 if (context) 433 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 434 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 435 kfree(pd); 436 return ERR_PTR(-EFAULT); 437 } 438 439 return &pd->ibpd; 440 } 441 442 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 443 { 444 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 445 kfree(pd); 446 447 return 0; 448 } 449 450 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 451 { 452 return mlx4_multicast_attach(to_mdev(ibqp->device)->dev, 453 &to_mqp(ibqp)->mqp, gid->raw, 454 !!(to_mqp(ibqp)->flags & 455 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK)); 456 } 457 458 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 459 { 460 return mlx4_multicast_detach(to_mdev(ibqp->device)->dev, 461 &to_mqp(ibqp)->mqp, gid->raw); 462 } 463 464 static int init_node_data(struct mlx4_ib_dev *dev) 465 { 466 struct ib_smp *in_mad = NULL; 467 struct ib_smp *out_mad = NULL; 468 int err = -ENOMEM; 469 470 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 471 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 472 if (!in_mad || !out_mad) 473 goto out; 474 475 init_query_mad(in_mad); 476 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 477 478 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 479 if (err) 480 goto out; 481 482 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 483 484 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 485 486 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 487 if (err) 488 goto out; 489 490 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 491 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 492 493 out: 494 kfree(in_mad); 495 kfree(out_mad); 496 return err; 497 } 498 499 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 500 char *buf) 501 { 502 struct mlx4_ib_dev *dev = 503 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 504 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 505 } 506 507 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 508 char *buf) 509 { 510 struct mlx4_ib_dev *dev = 511 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 512 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 513 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 514 (int) dev->dev->caps.fw_ver & 0xffff); 515 } 516 517 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 518 char *buf) 519 { 520 struct mlx4_ib_dev *dev = 521 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 522 return sprintf(buf, "%x\n", dev->dev->rev_id); 523 } 524 525 static ssize_t show_board(struct device *device, struct device_attribute *attr, 526 char *buf) 527 { 528 struct mlx4_ib_dev *dev = 529 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 530 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 531 dev->dev->board_id); 532 } 533 534 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 535 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 536 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 537 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 538 539 static struct device_attribute *mlx4_class_attributes[] = { 540 &dev_attr_hw_rev, 541 &dev_attr_fw_ver, 542 &dev_attr_hca_type, 543 &dev_attr_board_id 544 }; 545 546 static void *mlx4_ib_add(struct mlx4_dev *dev) 547 { 548 struct mlx4_ib_dev *ibdev; 549 int num_ports = 0; 550 int i; 551 552 printk_once(KERN_INFO "%s", mlx4_ib_version); 553 554 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 555 num_ports++; 556 557 /* No point in registering a device with no ports... */ 558 if (num_ports == 0) 559 return NULL; 560 561 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 562 if (!ibdev) { 563 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 564 return NULL; 565 } 566 567 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 568 goto err_dealloc; 569 570 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 571 goto err_pd; 572 573 ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 574 if (!ibdev->uar_map) 575 goto err_uar; 576 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 577 578 ibdev->dev = dev; 579 580 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 581 ibdev->ib_dev.owner = THIS_MODULE; 582 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 583 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 584 ibdev->num_ports = num_ports; 585 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 586 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 587 ibdev->ib_dev.dma_device = &dev->pdev->dev; 588 589 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 590 ibdev->ib_dev.uverbs_cmd_mask = 591 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 592 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 593 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 594 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 595 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 596 (1ull << IB_USER_VERBS_CMD_REG_MR) | 597 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 598 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 599 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 600 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 601 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 602 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 603 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 604 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 605 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 606 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 607 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 608 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 609 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 610 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 611 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 612 613 ibdev->ib_dev.query_device = mlx4_ib_query_device; 614 ibdev->ib_dev.query_port = mlx4_ib_query_port; 615 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 616 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 617 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 618 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 619 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 620 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 621 ibdev->ib_dev.mmap = mlx4_ib_mmap; 622 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 623 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 624 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 625 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 626 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 627 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 628 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 629 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 630 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 631 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 632 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 633 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 634 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 635 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 636 ibdev->ib_dev.post_send = mlx4_ib_post_send; 637 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 638 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 639 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 640 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 641 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 642 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 643 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 644 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 645 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 646 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 647 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 648 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 649 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 650 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 651 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 652 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 653 654 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 655 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 656 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 657 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 658 659 if (init_node_data(ibdev)) 660 goto err_map; 661 662 spin_lock_init(&ibdev->sm_lock); 663 mutex_init(&ibdev->cap_mask_mutex); 664 665 if (ib_register_device(&ibdev->ib_dev, NULL)) 666 goto err_map; 667 668 if (mlx4_ib_mad_init(ibdev)) 669 goto err_reg; 670 671 for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) { 672 if (device_create_file(&ibdev->ib_dev.dev, 673 mlx4_class_attributes[i])) 674 goto err_reg; 675 } 676 677 ibdev->ib_active = true; 678 679 return ibdev; 680 681 err_reg: 682 ib_unregister_device(&ibdev->ib_dev); 683 684 err_map: 685 iounmap(ibdev->uar_map); 686 687 err_uar: 688 mlx4_uar_free(dev, &ibdev->priv_uar); 689 690 err_pd: 691 mlx4_pd_free(dev, ibdev->priv_pdn); 692 693 err_dealloc: 694 ib_dealloc_device(&ibdev->ib_dev); 695 696 return NULL; 697 } 698 699 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 700 { 701 struct mlx4_ib_dev *ibdev = ibdev_ptr; 702 int p; 703 704 mlx4_ib_mad_cleanup(ibdev); 705 ib_unregister_device(&ibdev->ib_dev); 706 707 for (p = 1; p <= ibdev->num_ports; ++p) 708 mlx4_CLOSE_PORT(dev, p); 709 710 iounmap(ibdev->uar_map); 711 mlx4_uar_free(dev, &ibdev->priv_uar); 712 mlx4_pd_free(dev, ibdev->priv_pdn); 713 ib_dealloc_device(&ibdev->ib_dev); 714 } 715 716 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 717 enum mlx4_dev_event event, int port) 718 { 719 struct ib_event ibev; 720 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 721 722 if (port > ibdev->num_ports) 723 return; 724 725 switch (event) { 726 case MLX4_DEV_EVENT_PORT_UP: 727 ibev.event = IB_EVENT_PORT_ACTIVE; 728 break; 729 730 case MLX4_DEV_EVENT_PORT_DOWN: 731 ibev.event = IB_EVENT_PORT_ERR; 732 break; 733 734 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 735 ibdev->ib_active = false; 736 ibev.event = IB_EVENT_DEVICE_FATAL; 737 break; 738 739 default: 740 return; 741 } 742 743 ibev.device = ibdev_ptr; 744 ibev.element.port_num = port; 745 746 ib_dispatch_event(&ibev); 747 } 748 749 static struct mlx4_interface mlx4_ib_interface = { 750 .add = mlx4_ib_add, 751 .remove = mlx4_ib_remove, 752 .event = mlx4_ib_event 753 }; 754 755 static int __init mlx4_ib_init(void) 756 { 757 return mlx4_register_interface(&mlx4_ib_interface); 758 } 759 760 static void __exit mlx4_ib_cleanup(void) 761 { 762 mlx4_unregister_interface(&mlx4_ib_interface); 763 } 764 765 module_init(mlx4_ib_init); 766 module_exit(mlx4_ib_cleanup); 767