1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/module.h> 34 #include <linux/init.h> 35 #include <linux/errno.h> 36 37 #include <rdma/ib_smi.h> 38 #include <rdma/ib_user_verbs.h> 39 40 #include <linux/mlx4/driver.h> 41 #include <linux/mlx4/cmd.h> 42 43 #include "mlx4_ib.h" 44 #include "user.h" 45 46 #define DRV_NAME "mlx4_ib" 47 #define DRV_VERSION "1.0" 48 #define DRV_RELDATE "April 4, 2008" 49 50 MODULE_AUTHOR("Roland Dreier"); 51 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 52 MODULE_LICENSE("Dual BSD/GPL"); 53 MODULE_VERSION(DRV_VERSION); 54 55 static const char mlx4_ib_version[] = 56 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 57 DRV_VERSION " (" DRV_RELDATE ")\n"; 58 59 static void init_query_mad(struct ib_smp *mad) 60 { 61 mad->base_version = 1; 62 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 63 mad->class_version = 1; 64 mad->method = IB_MGMT_METHOD_GET; 65 } 66 67 static int mlx4_ib_query_device(struct ib_device *ibdev, 68 struct ib_device_attr *props) 69 { 70 struct mlx4_ib_dev *dev = to_mdev(ibdev); 71 struct ib_smp *in_mad = NULL; 72 struct ib_smp *out_mad = NULL; 73 int err = -ENOMEM; 74 75 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 76 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 77 if (!in_mad || !out_mad) 78 goto out; 79 80 init_query_mad(in_mad); 81 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 82 83 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); 84 if (err) 85 goto out; 86 87 memset(props, 0, sizeof *props); 88 89 props->fw_ver = dev->dev->caps.fw_ver; 90 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 91 IB_DEVICE_PORT_ACTIVE_EVENT | 92 IB_DEVICE_SYS_IMAGE_GUID | 93 IB_DEVICE_RC_RNR_NAK_GEN | 94 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 95 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 96 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 97 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 98 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 99 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 100 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 101 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 102 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 103 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 104 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 105 if (dev->dev->caps.max_gso_sz) 106 props->device_cap_flags |= IB_DEVICE_UD_TSO; 107 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 108 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 109 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 110 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 111 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 112 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 113 114 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 115 0xffffff; 116 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 117 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 118 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 119 120 props->max_mr_size = ~0ull; 121 props->page_size_cap = dev->dev->caps.page_size_cap; 122 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; 123 props->max_qp_wr = dev->dev->caps.max_wqes; 124 props->max_sge = min(dev->dev->caps.max_sq_sg, 125 dev->dev->caps.max_rq_sg); 126 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; 127 props->max_cqe = dev->dev->caps.max_cqes; 128 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; 129 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 130 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 131 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 132 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 133 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; 134 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 135 props->max_srq_sge = dev->dev->caps.max_srq_sge; 136 props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64); 137 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 138 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 139 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 140 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 141 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 142 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 143 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 144 props->max_mcast_grp; 145 props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1; 146 147 out: 148 kfree(in_mad); 149 kfree(out_mad); 150 151 return err; 152 } 153 154 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 155 struct ib_port_attr *props) 156 { 157 struct ib_smp *in_mad = NULL; 158 struct ib_smp *out_mad = NULL; 159 int err = -ENOMEM; 160 161 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 162 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 163 if (!in_mad || !out_mad) 164 goto out; 165 166 memset(props, 0, sizeof *props); 167 168 init_query_mad(in_mad); 169 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 170 in_mad->attr_mod = cpu_to_be32(port); 171 172 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 173 if (err) 174 goto out; 175 176 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 177 props->lmc = out_mad->data[34] & 0x7; 178 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 179 props->sm_sl = out_mad->data[36] & 0xf; 180 props->state = out_mad->data[32] & 0xf; 181 props->phys_state = out_mad->data[33] >> 4; 182 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 183 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 184 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 185 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 186 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 187 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 188 props->active_width = out_mad->data[31] & 0xf; 189 props->active_speed = out_mad->data[35] >> 4; 190 props->max_mtu = out_mad->data[41] & 0xf; 191 props->active_mtu = out_mad->data[36] >> 4; 192 props->subnet_timeout = out_mad->data[51] & 0x1f; 193 props->max_vl_num = out_mad->data[37] >> 4; 194 props->init_type_reply = out_mad->data[41] >> 4; 195 196 out: 197 kfree(in_mad); 198 kfree(out_mad); 199 200 return err; 201 } 202 203 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 204 union ib_gid *gid) 205 { 206 struct ib_smp *in_mad = NULL; 207 struct ib_smp *out_mad = NULL; 208 int err = -ENOMEM; 209 210 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 211 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 212 if (!in_mad || !out_mad) 213 goto out; 214 215 init_query_mad(in_mad); 216 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 217 in_mad->attr_mod = cpu_to_be32(port); 218 219 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 220 if (err) 221 goto out; 222 223 memcpy(gid->raw, out_mad->data + 8, 8); 224 225 init_query_mad(in_mad); 226 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 227 in_mad->attr_mod = cpu_to_be32(index / 8); 228 229 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 230 if (err) 231 goto out; 232 233 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 234 235 out: 236 kfree(in_mad); 237 kfree(out_mad); 238 return err; 239 } 240 241 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 242 u16 *pkey) 243 { 244 struct ib_smp *in_mad = NULL; 245 struct ib_smp *out_mad = NULL; 246 int err = -ENOMEM; 247 248 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 249 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 250 if (!in_mad || !out_mad) 251 goto out; 252 253 init_query_mad(in_mad); 254 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 255 in_mad->attr_mod = cpu_to_be32(index / 32); 256 257 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 258 if (err) 259 goto out; 260 261 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 262 263 out: 264 kfree(in_mad); 265 kfree(out_mad); 266 return err; 267 } 268 269 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 270 struct ib_device_modify *props) 271 { 272 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 273 return -EOPNOTSUPP; 274 275 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 276 spin_lock(&to_mdev(ibdev)->sm_lock); 277 memcpy(ibdev->node_desc, props->node_desc, 64); 278 spin_unlock(&to_mdev(ibdev)->sm_lock); 279 } 280 281 return 0; 282 } 283 284 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 285 u32 cap_mask) 286 { 287 struct mlx4_cmd_mailbox *mailbox; 288 int err; 289 290 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 291 if (IS_ERR(mailbox)) 292 return PTR_ERR(mailbox); 293 294 memset(mailbox->buf, 0, 256); 295 296 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 297 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 298 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 299 } else { 300 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 301 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 302 } 303 304 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT, 305 MLX4_CMD_TIME_CLASS_B); 306 307 mlx4_free_cmd_mailbox(dev->dev, mailbox); 308 return err; 309 } 310 311 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 312 struct ib_port_modify *props) 313 { 314 struct ib_port_attr attr; 315 u32 cap_mask; 316 int err; 317 318 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 319 320 err = mlx4_ib_query_port(ibdev, port, &attr); 321 if (err) 322 goto out; 323 324 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 325 ~props->clr_port_cap_mask; 326 327 err = mlx4_SET_PORT(to_mdev(ibdev), port, 328 !!(mask & IB_PORT_RESET_QKEY_CNTR), 329 cap_mask); 330 331 out: 332 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 333 return err; 334 } 335 336 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 337 struct ib_udata *udata) 338 { 339 struct mlx4_ib_dev *dev = to_mdev(ibdev); 340 struct mlx4_ib_ucontext *context; 341 struct mlx4_ib_alloc_ucontext_resp resp; 342 int err; 343 344 resp.qp_tab_size = dev->dev->caps.num_qps; 345 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 346 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 347 348 context = kmalloc(sizeof *context, GFP_KERNEL); 349 if (!context) 350 return ERR_PTR(-ENOMEM); 351 352 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 353 if (err) { 354 kfree(context); 355 return ERR_PTR(err); 356 } 357 358 INIT_LIST_HEAD(&context->db_page_list); 359 mutex_init(&context->db_page_mutex); 360 361 err = ib_copy_to_udata(udata, &resp, sizeof resp); 362 if (err) { 363 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 364 kfree(context); 365 return ERR_PTR(-EFAULT); 366 } 367 368 return &context->ibucontext; 369 } 370 371 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 372 { 373 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 374 375 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 376 kfree(context); 377 378 return 0; 379 } 380 381 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 382 { 383 struct mlx4_ib_dev *dev = to_mdev(context->device); 384 385 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 386 return -EINVAL; 387 388 if (vma->vm_pgoff == 0) { 389 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 390 391 if (io_remap_pfn_range(vma, vma->vm_start, 392 to_mucontext(context)->uar.pfn, 393 PAGE_SIZE, vma->vm_page_prot)) 394 return -EAGAIN; 395 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 396 /* FIXME want pgprot_writecombine() for BlueFlame pages */ 397 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 398 399 if (io_remap_pfn_range(vma, vma->vm_start, 400 to_mucontext(context)->uar.pfn + 401 dev->dev->caps.num_uars, 402 PAGE_SIZE, vma->vm_page_prot)) 403 return -EAGAIN; 404 } else 405 return -EINVAL; 406 407 return 0; 408 } 409 410 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 411 struct ib_ucontext *context, 412 struct ib_udata *udata) 413 { 414 struct mlx4_ib_pd *pd; 415 int err; 416 417 pd = kmalloc(sizeof *pd, GFP_KERNEL); 418 if (!pd) 419 return ERR_PTR(-ENOMEM); 420 421 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 422 if (err) { 423 kfree(pd); 424 return ERR_PTR(err); 425 } 426 427 if (context) 428 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 429 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 430 kfree(pd); 431 return ERR_PTR(-EFAULT); 432 } 433 434 return &pd->ibpd; 435 } 436 437 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 438 { 439 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 440 kfree(pd); 441 442 return 0; 443 } 444 445 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 446 { 447 return mlx4_multicast_attach(to_mdev(ibqp->device)->dev, 448 &to_mqp(ibqp)->mqp, gid->raw, 449 !!(to_mqp(ibqp)->flags & 450 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK)); 451 } 452 453 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 454 { 455 return mlx4_multicast_detach(to_mdev(ibqp->device)->dev, 456 &to_mqp(ibqp)->mqp, gid->raw); 457 } 458 459 static int init_node_data(struct mlx4_ib_dev *dev) 460 { 461 struct ib_smp *in_mad = NULL; 462 struct ib_smp *out_mad = NULL; 463 int err = -ENOMEM; 464 465 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 466 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 467 if (!in_mad || !out_mad) 468 goto out; 469 470 init_query_mad(in_mad); 471 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 472 473 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 474 if (err) 475 goto out; 476 477 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 478 479 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 480 481 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 482 if (err) 483 goto out; 484 485 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 486 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 487 488 out: 489 kfree(in_mad); 490 kfree(out_mad); 491 return err; 492 } 493 494 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 495 char *buf) 496 { 497 struct mlx4_ib_dev *dev = 498 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 499 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 500 } 501 502 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 503 char *buf) 504 { 505 struct mlx4_ib_dev *dev = 506 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 507 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 508 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 509 (int) dev->dev->caps.fw_ver & 0xffff); 510 } 511 512 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 513 char *buf) 514 { 515 struct mlx4_ib_dev *dev = 516 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 517 return sprintf(buf, "%x\n", dev->dev->rev_id); 518 } 519 520 static ssize_t show_board(struct device *device, struct device_attribute *attr, 521 char *buf) 522 { 523 struct mlx4_ib_dev *dev = 524 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 525 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 526 dev->dev->board_id); 527 } 528 529 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 530 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 531 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 532 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 533 534 static struct device_attribute *mlx4_class_attributes[] = { 535 &dev_attr_hw_rev, 536 &dev_attr_fw_ver, 537 &dev_attr_hca_type, 538 &dev_attr_board_id 539 }; 540 541 static void *mlx4_ib_add(struct mlx4_dev *dev) 542 { 543 static int mlx4_ib_version_printed; 544 struct mlx4_ib_dev *ibdev; 545 int i; 546 547 548 if (!mlx4_ib_version_printed) { 549 printk(KERN_INFO "%s", mlx4_ib_version); 550 ++mlx4_ib_version_printed; 551 } 552 553 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 554 if (!ibdev) { 555 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 556 return NULL; 557 } 558 559 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 560 goto err_dealloc; 561 562 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 563 goto err_pd; 564 565 ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 566 if (!ibdev->uar_map) 567 goto err_uar; 568 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 569 570 ibdev->dev = dev; 571 572 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 573 ibdev->ib_dev.owner = THIS_MODULE; 574 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 575 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 576 ibdev->ib_dev.phys_port_cnt = dev->caps.num_ports; 577 ibdev->ib_dev.num_comp_vectors = 1; 578 ibdev->ib_dev.dma_device = &dev->pdev->dev; 579 580 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 581 ibdev->ib_dev.uverbs_cmd_mask = 582 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 583 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 584 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 585 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 586 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 587 (1ull << IB_USER_VERBS_CMD_REG_MR) | 588 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 589 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 590 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 591 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 592 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 593 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 594 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 595 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 596 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 597 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 598 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 599 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 600 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 601 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 602 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 603 604 ibdev->ib_dev.query_device = mlx4_ib_query_device; 605 ibdev->ib_dev.query_port = mlx4_ib_query_port; 606 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 607 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 608 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 609 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 610 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 611 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 612 ibdev->ib_dev.mmap = mlx4_ib_mmap; 613 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 614 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 615 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 616 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 617 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 618 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 619 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 620 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 621 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 622 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 623 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 624 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 625 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 626 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 627 ibdev->ib_dev.post_send = mlx4_ib_post_send; 628 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 629 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 630 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 631 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 632 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 633 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 634 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 635 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 636 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 637 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 638 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 639 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 640 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 641 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 642 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 643 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 644 645 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 646 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 647 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 648 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 649 650 if (init_node_data(ibdev)) 651 goto err_map; 652 653 spin_lock_init(&ibdev->sm_lock); 654 mutex_init(&ibdev->cap_mask_mutex); 655 656 if (ib_register_device(&ibdev->ib_dev)) 657 goto err_map; 658 659 if (mlx4_ib_mad_init(ibdev)) 660 goto err_reg; 661 662 for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) { 663 if (device_create_file(&ibdev->ib_dev.dev, 664 mlx4_class_attributes[i])) 665 goto err_reg; 666 } 667 668 return ibdev; 669 670 err_reg: 671 ib_unregister_device(&ibdev->ib_dev); 672 673 err_map: 674 iounmap(ibdev->uar_map); 675 676 err_uar: 677 mlx4_uar_free(dev, &ibdev->priv_uar); 678 679 err_pd: 680 mlx4_pd_free(dev, ibdev->priv_pdn); 681 682 err_dealloc: 683 ib_dealloc_device(&ibdev->ib_dev); 684 685 return NULL; 686 } 687 688 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 689 { 690 struct mlx4_ib_dev *ibdev = ibdev_ptr; 691 int p; 692 693 for (p = 1; p <= dev->caps.num_ports; ++p) 694 mlx4_CLOSE_PORT(dev, p); 695 696 mlx4_ib_mad_cleanup(ibdev); 697 ib_unregister_device(&ibdev->ib_dev); 698 iounmap(ibdev->uar_map); 699 mlx4_uar_free(dev, &ibdev->priv_uar); 700 mlx4_pd_free(dev, ibdev->priv_pdn); 701 ib_dealloc_device(&ibdev->ib_dev); 702 } 703 704 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 705 enum mlx4_dev_event event, int port) 706 { 707 struct ib_event ibev; 708 709 switch (event) { 710 case MLX4_DEV_EVENT_PORT_UP: 711 ibev.event = IB_EVENT_PORT_ACTIVE; 712 break; 713 714 case MLX4_DEV_EVENT_PORT_DOWN: 715 ibev.event = IB_EVENT_PORT_ERR; 716 break; 717 718 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 719 ibev.event = IB_EVENT_DEVICE_FATAL; 720 break; 721 722 default: 723 return; 724 } 725 726 ibev.device = ibdev_ptr; 727 ibev.element.port_num = port; 728 729 ib_dispatch_event(&ibev); 730 } 731 732 static struct mlx4_interface mlx4_ib_interface = { 733 .add = mlx4_ib_add, 734 .remove = mlx4_ib_remove, 735 .event = mlx4_ib_event 736 }; 737 738 static int __init mlx4_ib_init(void) 739 { 740 return mlx4_register_interface(&mlx4_ib_interface); 741 } 742 743 static void __exit mlx4_ib_cleanup(void) 744 { 745 mlx4_unregister_interface(&mlx4_ib_interface); 746 } 747 748 module_init(mlx4_ib_init); 749 module_exit(mlx4_ib_cleanup); 750