1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. 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 * $Id: mthca_provider.c 1397 2004-12-28 05:09:00Z roland $ 33 */ 34 35 #include <ib_smi.h> 36 37 #include "mthca_dev.h" 38 #include "mthca_cmd.h" 39 40 static int mthca_query_device(struct ib_device *ibdev, 41 struct ib_device_attr *props) 42 { 43 struct ib_smp *in_mad = NULL; 44 struct ib_smp *out_mad = NULL; 45 int err = -ENOMEM; 46 struct mthca_dev* mdev = to_mdev(ibdev); 47 48 u8 status; 49 50 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); 51 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 52 if (!in_mad || !out_mad) 53 goto out; 54 55 props->fw_ver = mdev->fw_ver; 56 57 memset(in_mad, 0, sizeof *in_mad); 58 in_mad->base_version = 1; 59 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 60 in_mad->class_version = 1; 61 in_mad->method = IB_MGMT_METHOD_GET; 62 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 63 64 err = mthca_MAD_IFC(mdev, 1, 1, 65 1, NULL, NULL, in_mad, out_mad, 66 &status); 67 if (err) 68 goto out; 69 if (status) { 70 err = -EINVAL; 71 goto out; 72 } 73 74 props->device_cap_flags = mdev->device_cap_flags; 75 props->vendor_id = be32_to_cpup((u32 *) (out_mad->data + 36)) & 76 0xffffff; 77 props->vendor_part_id = be16_to_cpup((u16 *) (out_mad->data + 30)); 78 props->hw_ver = be16_to_cpup((u16 *) (out_mad->data + 32)); 79 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 80 memcpy(&props->node_guid, out_mad->data + 12, 8); 81 82 err = 0; 83 out: 84 kfree(in_mad); 85 kfree(out_mad); 86 return err; 87 } 88 89 static int mthca_query_port(struct ib_device *ibdev, 90 u8 port, struct ib_port_attr *props) 91 { 92 struct ib_smp *in_mad = NULL; 93 struct ib_smp *out_mad = NULL; 94 int err = -ENOMEM; 95 u8 status; 96 97 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); 98 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 99 if (!in_mad || !out_mad) 100 goto out; 101 102 memset(in_mad, 0, sizeof *in_mad); 103 in_mad->base_version = 1; 104 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 105 in_mad->class_version = 1; 106 in_mad->method = IB_MGMT_METHOD_GET; 107 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 108 in_mad->attr_mod = cpu_to_be32(port); 109 110 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 111 port, NULL, NULL, in_mad, out_mad, 112 &status); 113 if (err) 114 goto out; 115 if (status) { 116 err = -EINVAL; 117 goto out; 118 } 119 120 props->lid = be16_to_cpup((u16 *) (out_mad->data + 16)); 121 props->lmc = out_mad->data[34] & 0x7; 122 props->sm_lid = be16_to_cpup((u16 *) (out_mad->data + 18)); 123 props->sm_sl = out_mad->data[36] & 0xf; 124 props->state = out_mad->data[32] & 0xf; 125 props->phys_state = out_mad->data[33] >> 4; 126 props->port_cap_flags = be32_to_cpup((u32 *) (out_mad->data + 20)); 127 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len; 128 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len; 129 props->qkey_viol_cntr = be16_to_cpup((u16 *) (out_mad->data + 48)); 130 props->active_width = out_mad->data[31] & 0xf; 131 props->active_speed = out_mad->data[35] >> 4; 132 133 out: 134 kfree(in_mad); 135 kfree(out_mad); 136 return err; 137 } 138 139 static int mthca_modify_port(struct ib_device *ibdev, 140 u8 port, int port_modify_mask, 141 struct ib_port_modify *props) 142 { 143 struct mthca_set_ib_param set_ib; 144 struct ib_port_attr attr; 145 int err; 146 u8 status; 147 148 if (down_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 149 return -ERESTARTSYS; 150 151 err = mthca_query_port(ibdev, port, &attr); 152 if (err) 153 goto out; 154 155 set_ib.set_si_guid = 0; 156 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 157 158 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 159 ~props->clr_port_cap_mask; 160 161 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status); 162 if (err) 163 goto out; 164 if (status) { 165 err = -EINVAL; 166 goto out; 167 } 168 169 out: 170 up(&to_mdev(ibdev)->cap_mask_mutex); 171 return err; 172 } 173 174 static int mthca_query_pkey(struct ib_device *ibdev, 175 u8 port, u16 index, u16 *pkey) 176 { 177 struct ib_smp *in_mad = NULL; 178 struct ib_smp *out_mad = NULL; 179 int err = -ENOMEM; 180 u8 status; 181 182 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); 183 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 184 if (!in_mad || !out_mad) 185 goto out; 186 187 memset(in_mad, 0, sizeof *in_mad); 188 in_mad->base_version = 1; 189 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 190 in_mad->class_version = 1; 191 in_mad->method = IB_MGMT_METHOD_GET; 192 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 193 in_mad->attr_mod = cpu_to_be32(index / 32); 194 195 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 196 port, NULL, NULL, in_mad, out_mad, 197 &status); 198 if (err) 199 goto out; 200 if (status) { 201 err = -EINVAL; 202 goto out; 203 } 204 205 *pkey = be16_to_cpu(((u16 *) out_mad->data)[index % 32]); 206 207 out: 208 kfree(in_mad); 209 kfree(out_mad); 210 return err; 211 } 212 213 static int mthca_query_gid(struct ib_device *ibdev, u8 port, 214 int index, union ib_gid *gid) 215 { 216 struct ib_smp *in_mad = NULL; 217 struct ib_smp *out_mad = NULL; 218 int err = -ENOMEM; 219 u8 status; 220 221 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); 222 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 223 if (!in_mad || !out_mad) 224 goto out; 225 226 memset(in_mad, 0, sizeof *in_mad); 227 in_mad->base_version = 1; 228 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 229 in_mad->class_version = 1; 230 in_mad->method = IB_MGMT_METHOD_GET; 231 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 232 in_mad->attr_mod = cpu_to_be32(port); 233 234 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 235 port, NULL, NULL, in_mad, out_mad, 236 &status); 237 if (err) 238 goto out; 239 if (status) { 240 err = -EINVAL; 241 goto out; 242 } 243 244 memcpy(gid->raw, out_mad->data + 8, 8); 245 246 memset(in_mad, 0, sizeof *in_mad); 247 in_mad->base_version = 1; 248 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 249 in_mad->class_version = 1; 250 in_mad->method = IB_MGMT_METHOD_GET; 251 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 252 in_mad->attr_mod = cpu_to_be32(index / 8); 253 254 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 255 port, NULL, NULL, in_mad, out_mad, 256 &status); 257 if (err) 258 goto out; 259 if (status) { 260 err = -EINVAL; 261 goto out; 262 } 263 264 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 16, 8); 265 266 out: 267 kfree(in_mad); 268 kfree(out_mad); 269 return err; 270 } 271 272 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev) 273 { 274 struct mthca_pd *pd; 275 int err; 276 277 pd = kmalloc(sizeof *pd, GFP_KERNEL); 278 if (!pd) 279 return ERR_PTR(-ENOMEM); 280 281 err = mthca_pd_alloc(to_mdev(ibdev), pd); 282 if (err) { 283 kfree(pd); 284 return ERR_PTR(err); 285 } 286 287 return &pd->ibpd; 288 } 289 290 static int mthca_dealloc_pd(struct ib_pd *pd) 291 { 292 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 293 kfree(pd); 294 295 return 0; 296 } 297 298 static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 299 struct ib_ah_attr *ah_attr) 300 { 301 int err; 302 struct mthca_ah *ah; 303 304 ah = kmalloc(sizeof *ah, GFP_KERNEL); 305 if (!ah) 306 return ERR_PTR(-ENOMEM); 307 308 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 309 if (err) { 310 kfree(ah); 311 return ERR_PTR(err); 312 } 313 314 return &ah->ibah; 315 } 316 317 static int mthca_ah_destroy(struct ib_ah *ah) 318 { 319 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 320 kfree(ah); 321 322 return 0; 323 } 324 325 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 326 struct ib_qp_init_attr *init_attr) 327 { 328 struct mthca_qp *qp; 329 int err; 330 331 switch (init_attr->qp_type) { 332 case IB_QPT_RC: 333 case IB_QPT_UC: 334 case IB_QPT_UD: 335 { 336 qp = kmalloc(sizeof *qp, GFP_KERNEL); 337 if (!qp) 338 return ERR_PTR(-ENOMEM); 339 340 qp->sq.max = init_attr->cap.max_send_wr; 341 qp->rq.max = init_attr->cap.max_recv_wr; 342 qp->sq.max_gs = init_attr->cap.max_send_sge; 343 qp->rq.max_gs = init_attr->cap.max_recv_sge; 344 345 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 346 to_mcq(init_attr->send_cq), 347 to_mcq(init_attr->recv_cq), 348 init_attr->qp_type, init_attr->sq_sig_type, 349 qp); 350 qp->ibqp.qp_num = qp->qpn; 351 break; 352 } 353 case IB_QPT_SMI: 354 case IB_QPT_GSI: 355 { 356 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 357 if (!qp) 358 return ERR_PTR(-ENOMEM); 359 360 qp->sq.max = init_attr->cap.max_send_wr; 361 qp->rq.max = init_attr->cap.max_recv_wr; 362 qp->sq.max_gs = init_attr->cap.max_send_sge; 363 qp->rq.max_gs = init_attr->cap.max_recv_sge; 364 365 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 366 367 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 368 to_mcq(init_attr->send_cq), 369 to_mcq(init_attr->recv_cq), 370 init_attr->sq_sig_type, 371 qp->ibqp.qp_num, init_attr->port_num, 372 to_msqp(qp)); 373 break; 374 } 375 default: 376 /* Don't support raw QPs */ 377 return ERR_PTR(-ENOSYS); 378 } 379 380 if (err) { 381 kfree(qp); 382 return ERR_PTR(err); 383 } 384 385 init_attr->cap.max_inline_data = 0; 386 387 return &qp->ibqp; 388 } 389 390 static int mthca_destroy_qp(struct ib_qp *qp) 391 { 392 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 393 kfree(qp); 394 return 0; 395 } 396 397 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries) 398 { 399 struct mthca_cq *cq; 400 int nent; 401 int err; 402 403 cq = kmalloc(sizeof *cq, GFP_KERNEL); 404 if (!cq) 405 return ERR_PTR(-ENOMEM); 406 407 for (nent = 1; nent <= entries; nent <<= 1) 408 ; /* nothing */ 409 410 err = mthca_init_cq(to_mdev(ibdev), nent, cq); 411 if (err) { 412 kfree(cq); 413 cq = ERR_PTR(err); 414 } 415 416 return &cq->ibcq; 417 } 418 419 static int mthca_destroy_cq(struct ib_cq *cq) 420 { 421 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 422 kfree(cq); 423 424 return 0; 425 } 426 427 static inline u32 convert_access(int acc) 428 { 429 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 430 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 431 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 432 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 433 MTHCA_MPT_FLAG_LOCAL_READ; 434 } 435 436 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 437 { 438 struct mthca_mr *mr; 439 int err; 440 441 mr = kmalloc(sizeof *mr, GFP_KERNEL); 442 if (!mr) 443 return ERR_PTR(-ENOMEM); 444 445 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 446 to_mpd(pd)->pd_num, 447 convert_access(acc), mr); 448 449 if (err) { 450 kfree(mr); 451 return ERR_PTR(err); 452 } 453 454 return &mr->ibmr; 455 } 456 457 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd, 458 struct ib_phys_buf *buffer_list, 459 int num_phys_buf, 460 int acc, 461 u64 *iova_start) 462 { 463 struct mthca_mr *mr; 464 u64 *page_list; 465 u64 total_size; 466 u64 mask; 467 int shift; 468 int npages; 469 int err; 470 int i, j, n; 471 472 /* First check that we have enough alignment */ 473 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) 474 return ERR_PTR(-EINVAL); 475 476 if (num_phys_buf > 1 && 477 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) 478 return ERR_PTR(-EINVAL); 479 480 mask = 0; 481 total_size = 0; 482 for (i = 0; i < num_phys_buf; ++i) { 483 if (buffer_list[i].addr & ~PAGE_MASK) 484 return ERR_PTR(-EINVAL); 485 if (i != 0 && i != num_phys_buf - 1 && 486 (buffer_list[i].size & ~PAGE_MASK)) 487 return ERR_PTR(-EINVAL); 488 489 total_size += buffer_list[i].size; 490 if (i > 0) 491 mask |= buffer_list[i].addr; 492 } 493 494 /* Find largest page shift we can use to cover buffers */ 495 for (shift = PAGE_SHIFT; shift < 31; ++shift) 496 if (num_phys_buf > 1) { 497 if ((1ULL << shift) & mask) 498 break; 499 } else { 500 if (1ULL << shift >= 501 buffer_list[0].size + 502 (buffer_list[0].addr & ((1ULL << shift) - 1))) 503 break; 504 } 505 506 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1); 507 buffer_list[0].addr &= ~0ull << shift; 508 509 mr = kmalloc(sizeof *mr, GFP_KERNEL); 510 if (!mr) 511 return ERR_PTR(-ENOMEM); 512 513 npages = 0; 514 for (i = 0; i < num_phys_buf; ++i) 515 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 516 517 if (!npages) 518 return &mr->ibmr; 519 520 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL); 521 if (!page_list) { 522 kfree(mr); 523 return ERR_PTR(-ENOMEM); 524 } 525 526 n = 0; 527 for (i = 0; i < num_phys_buf; ++i) 528 for (j = 0; 529 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 530 ++j) 531 page_list[n++] = buffer_list[i].addr + ((u64) j << shift); 532 533 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) " 534 "in PD %x; shift %d, npages %d.\n", 535 (unsigned long long) buffer_list[0].addr, 536 (unsigned long long) *iova_start, 537 to_mpd(pd)->pd_num, 538 shift, npages); 539 540 err = mthca_mr_alloc_phys(to_mdev(pd->device), 541 to_mpd(pd)->pd_num, 542 page_list, shift, npages, 543 *iova_start, total_size, 544 convert_access(acc), mr); 545 546 if (err) { 547 kfree(mr); 548 return ERR_PTR(err); 549 } 550 551 kfree(page_list); 552 return &mr->ibmr; 553 } 554 555 static int mthca_dereg_mr(struct ib_mr *mr) 556 { 557 mthca_free_mr(to_mdev(mr->device), to_mmr(mr)); 558 kfree(mr); 559 return 0; 560 } 561 562 static ssize_t show_rev(struct class_device *cdev, char *buf) 563 { 564 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 565 return sprintf(buf, "%x\n", dev->rev_id); 566 } 567 568 static ssize_t show_fw_ver(struct class_device *cdev, char *buf) 569 { 570 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 571 return sprintf(buf, "%x.%x.%x\n", (int) (dev->fw_ver >> 32), 572 (int) (dev->fw_ver >> 16) & 0xffff, 573 (int) dev->fw_ver & 0xffff); 574 } 575 576 static ssize_t show_hca(struct class_device *cdev, char *buf) 577 { 578 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 579 switch (dev->hca_type) { 580 case TAVOR: return sprintf(buf, "MT23108\n"); 581 case ARBEL_COMPAT: return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 582 case ARBEL_NATIVE: return sprintf(buf, "MT25208\n"); 583 default: return sprintf(buf, "unknown\n"); 584 } 585 } 586 587 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 588 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 589 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 590 591 static struct class_device_attribute *mthca_class_attributes[] = { 592 &class_device_attr_hw_rev, 593 &class_device_attr_fw_ver, 594 &class_device_attr_hca_type 595 }; 596 597 int mthca_register_device(struct mthca_dev *dev) 598 { 599 int ret; 600 int i; 601 602 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 603 dev->ib_dev.node_type = IB_NODE_CA; 604 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 605 dev->ib_dev.dma_device = &dev->pdev->dev; 606 dev->ib_dev.class_dev.dev = &dev->pdev->dev; 607 dev->ib_dev.query_device = mthca_query_device; 608 dev->ib_dev.query_port = mthca_query_port; 609 dev->ib_dev.modify_port = mthca_modify_port; 610 dev->ib_dev.query_pkey = mthca_query_pkey; 611 dev->ib_dev.query_gid = mthca_query_gid; 612 dev->ib_dev.alloc_pd = mthca_alloc_pd; 613 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 614 dev->ib_dev.create_ah = mthca_ah_create; 615 dev->ib_dev.destroy_ah = mthca_ah_destroy; 616 dev->ib_dev.create_qp = mthca_create_qp; 617 dev->ib_dev.modify_qp = mthca_modify_qp; 618 dev->ib_dev.destroy_qp = mthca_destroy_qp; 619 dev->ib_dev.create_cq = mthca_create_cq; 620 dev->ib_dev.destroy_cq = mthca_destroy_cq; 621 dev->ib_dev.poll_cq = mthca_poll_cq; 622 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 623 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr; 624 dev->ib_dev.dereg_mr = mthca_dereg_mr; 625 dev->ib_dev.attach_mcast = mthca_multicast_attach; 626 dev->ib_dev.detach_mcast = mthca_multicast_detach; 627 dev->ib_dev.process_mad = mthca_process_mad; 628 629 if (dev->hca_type == ARBEL_NATIVE) { 630 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 631 dev->ib_dev.post_send = mthca_arbel_post_send; 632 dev->ib_dev.post_recv = mthca_arbel_post_receive; 633 } else { 634 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 635 dev->ib_dev.post_send = mthca_tavor_post_send; 636 dev->ib_dev.post_recv = mthca_tavor_post_receive; 637 } 638 639 init_MUTEX(&dev->cap_mask_mutex); 640 641 ret = ib_register_device(&dev->ib_dev); 642 if (ret) 643 return ret; 644 645 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) { 646 ret = class_device_create_file(&dev->ib_dev.class_dev, 647 mthca_class_attributes[i]); 648 if (ret) { 649 ib_unregister_device(&dev->ib_dev); 650 return ret; 651 } 652 } 653 654 return 0; 655 } 656 657 void mthca_unregister_device(struct mthca_dev *dev) 658 { 659 ib_unregister_device(&dev->ib_dev); 660 } 661