1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 4 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. 5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved. 7 * 8 * This software is available to you under a choice of one of two 9 * licenses. You may choose to be licensed under the terms of the GNU 10 * General Public License (GPL) Version 2, available from the file 11 * COPYING in the main directory of this source tree, or the 12 * OpenIB.org BSD license below: 13 * 14 * Redistribution and use in source and binary forms, with or 15 * without modification, are permitted provided that the following 16 * conditions are met: 17 * 18 * - Redistributions of source code must retain the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer. 21 * 22 * - Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials 25 * provided with the distribution. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34 * SOFTWARE. 35 */ 36 37 #include <rdma/ib_smi.h> 38 #include <rdma/ib_umem.h> 39 #include <rdma/ib_user_verbs.h> 40 41 #include <linux/sched.h> 42 #include <linux/slab.h> 43 #include <linux/stat.h> 44 #include <linux/mm.h> 45 #include <linux/export.h> 46 47 #include "mthca_dev.h" 48 #include "mthca_cmd.h" 49 #include "mthca_user.h" 50 #include "mthca_memfree.h" 51 52 static void init_query_mad(struct ib_smp *mad) 53 { 54 mad->base_version = 1; 55 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 56 mad->class_version = 1; 57 mad->method = IB_MGMT_METHOD_GET; 58 } 59 60 static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props, 61 struct ib_udata *uhw) 62 { 63 struct ib_smp *in_mad = NULL; 64 struct ib_smp *out_mad = NULL; 65 int err = -ENOMEM; 66 struct mthca_dev *mdev = to_mdev(ibdev); 67 68 if (uhw->inlen || uhw->outlen) 69 return -EINVAL; 70 71 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 72 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 73 if (!in_mad || !out_mad) 74 goto out; 75 76 memset(props, 0, sizeof *props); 77 78 props->fw_ver = mdev->fw_ver; 79 80 init_query_mad(in_mad); 81 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 82 83 err = mthca_MAD_IFC(mdev, 1, 1, 84 1, NULL, NULL, in_mad, out_mad); 85 if (err) 86 goto out; 87 88 props->device_cap_flags = mdev->device_cap_flags; 89 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 90 0xffffff; 91 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 92 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 93 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 94 95 props->max_mr_size = ~0ull; 96 props->page_size_cap = mdev->limits.page_size_cap; 97 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps; 98 props->max_qp_wr = mdev->limits.max_wqes; 99 props->max_sge = mdev->limits.max_sg; 100 props->max_sge_rd = props->max_sge; 101 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs; 102 props->max_cqe = mdev->limits.max_cqes; 103 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws; 104 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds; 105 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift; 106 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma; 107 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 108 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs; 109 props->max_srq_wr = mdev->limits.max_srq_wqes; 110 props->max_srq_sge = mdev->limits.max_srq_sge; 111 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay; 112 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ? 113 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 114 props->max_pkeys = mdev->limits.pkey_table_len; 115 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms; 116 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM; 117 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 118 props->max_mcast_grp; 119 /* 120 * If Sinai memory key optimization is being used, then only 121 * the 8-bit key portion will change. For other HCAs, the 122 * unused index bits will also be used for FMR remapping. 123 */ 124 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT) 125 props->max_map_per_fmr = 255; 126 else 127 props->max_map_per_fmr = 128 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1; 129 130 err = 0; 131 out: 132 kfree(in_mad); 133 kfree(out_mad); 134 return err; 135 } 136 137 static int mthca_query_port(struct ib_device *ibdev, 138 u8 port, struct ib_port_attr *props) 139 { 140 struct ib_smp *in_mad = NULL; 141 struct ib_smp *out_mad = NULL; 142 int err = -ENOMEM; 143 144 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 145 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 146 if (!in_mad || !out_mad) 147 goto out; 148 149 memset(props, 0, sizeof *props); 150 151 init_query_mad(in_mad); 152 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 153 in_mad->attr_mod = cpu_to_be32(port); 154 155 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 156 port, NULL, NULL, in_mad, out_mad); 157 if (err) 158 goto out; 159 160 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 161 props->lmc = out_mad->data[34] & 0x7; 162 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 163 props->sm_sl = out_mad->data[36] & 0xf; 164 props->state = out_mad->data[32] & 0xf; 165 props->phys_state = out_mad->data[33] >> 4; 166 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 167 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len; 168 props->max_msg_sz = 0x80000000; 169 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len; 170 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 171 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 172 props->active_width = out_mad->data[31] & 0xf; 173 props->active_speed = out_mad->data[35] >> 4; 174 props->max_mtu = out_mad->data[41] & 0xf; 175 props->active_mtu = out_mad->data[36] >> 4; 176 props->subnet_timeout = out_mad->data[51] & 0x1f; 177 props->max_vl_num = out_mad->data[37] >> 4; 178 props->init_type_reply = out_mad->data[41] >> 4; 179 180 out: 181 kfree(in_mad); 182 kfree(out_mad); 183 return err; 184 } 185 186 static int mthca_modify_device(struct ib_device *ibdev, 187 int mask, 188 struct ib_device_modify *props) 189 { 190 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 191 return -EOPNOTSUPP; 192 193 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 194 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 195 return -ERESTARTSYS; 196 memcpy(ibdev->node_desc, props->node_desc, 64); 197 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 198 } 199 200 return 0; 201 } 202 203 static int mthca_modify_port(struct ib_device *ibdev, 204 u8 port, int port_modify_mask, 205 struct ib_port_modify *props) 206 { 207 struct mthca_set_ib_param set_ib; 208 struct ib_port_attr attr; 209 int err; 210 211 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 212 return -ERESTARTSYS; 213 214 err = mthca_query_port(ibdev, port, &attr); 215 if (err) 216 goto out; 217 218 set_ib.set_si_guid = 0; 219 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 220 221 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 222 ~props->clr_port_cap_mask; 223 224 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port); 225 if (err) 226 goto out; 227 out: 228 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 229 return err; 230 } 231 232 static int mthca_query_pkey(struct ib_device *ibdev, 233 u8 port, u16 index, u16 *pkey) 234 { 235 struct ib_smp *in_mad = NULL; 236 struct ib_smp *out_mad = NULL; 237 int err = -ENOMEM; 238 239 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 240 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 241 if (!in_mad || !out_mad) 242 goto out; 243 244 init_query_mad(in_mad); 245 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 246 in_mad->attr_mod = cpu_to_be32(index / 32); 247 248 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 249 port, NULL, NULL, in_mad, out_mad); 250 if (err) 251 goto out; 252 253 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 254 255 out: 256 kfree(in_mad); 257 kfree(out_mad); 258 return err; 259 } 260 261 static int mthca_query_gid(struct ib_device *ibdev, u8 port, 262 int index, union ib_gid *gid) 263 { 264 struct ib_smp *in_mad = NULL; 265 struct ib_smp *out_mad = NULL; 266 int err = -ENOMEM; 267 268 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 269 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 270 if (!in_mad || !out_mad) 271 goto out; 272 273 init_query_mad(in_mad); 274 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 275 in_mad->attr_mod = cpu_to_be32(port); 276 277 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 278 port, NULL, NULL, in_mad, out_mad); 279 if (err) 280 goto out; 281 282 memcpy(gid->raw, out_mad->data + 8, 8); 283 284 init_query_mad(in_mad); 285 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 286 in_mad->attr_mod = cpu_to_be32(index / 8); 287 288 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 289 port, NULL, NULL, in_mad, out_mad); 290 if (err) 291 goto out; 292 293 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 294 295 out: 296 kfree(in_mad); 297 kfree(out_mad); 298 return err; 299 } 300 301 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev, 302 struct ib_udata *udata) 303 { 304 struct mthca_alloc_ucontext_resp uresp; 305 struct mthca_ucontext *context; 306 int err; 307 308 if (!(to_mdev(ibdev)->active)) 309 return ERR_PTR(-EAGAIN); 310 311 memset(&uresp, 0, sizeof uresp); 312 313 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps; 314 if (mthca_is_memfree(to_mdev(ibdev))) 315 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size; 316 else 317 uresp.uarc_size = 0; 318 319 context = kmalloc(sizeof *context, GFP_KERNEL); 320 if (!context) 321 return ERR_PTR(-ENOMEM); 322 323 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 324 if (err) { 325 kfree(context); 326 return ERR_PTR(err); 327 } 328 329 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 330 if (IS_ERR(context->db_tab)) { 331 err = PTR_ERR(context->db_tab); 332 mthca_uar_free(to_mdev(ibdev), &context->uar); 333 kfree(context); 334 return ERR_PTR(err); 335 } 336 337 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 338 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 339 mthca_uar_free(to_mdev(ibdev), &context->uar); 340 kfree(context); 341 return ERR_PTR(-EFAULT); 342 } 343 344 context->reg_mr_warned = 0; 345 346 return &context->ibucontext; 347 } 348 349 static int mthca_dealloc_ucontext(struct ib_ucontext *context) 350 { 351 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 352 to_mucontext(context)->db_tab); 353 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 354 kfree(to_mucontext(context)); 355 356 return 0; 357 } 358 359 static int mthca_mmap_uar(struct ib_ucontext *context, 360 struct vm_area_struct *vma) 361 { 362 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 363 return -EINVAL; 364 365 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 366 367 if (io_remap_pfn_range(vma, vma->vm_start, 368 to_mucontext(context)->uar.pfn, 369 PAGE_SIZE, vma->vm_page_prot)) 370 return -EAGAIN; 371 372 return 0; 373 } 374 375 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev, 376 struct ib_ucontext *context, 377 struct ib_udata *udata) 378 { 379 struct mthca_pd *pd; 380 int err; 381 382 pd = kmalloc(sizeof *pd, GFP_KERNEL); 383 if (!pd) 384 return ERR_PTR(-ENOMEM); 385 386 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd); 387 if (err) { 388 kfree(pd); 389 return ERR_PTR(err); 390 } 391 392 if (context) { 393 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 394 mthca_pd_free(to_mdev(ibdev), pd); 395 kfree(pd); 396 return ERR_PTR(-EFAULT); 397 } 398 } 399 400 return &pd->ibpd; 401 } 402 403 static int mthca_dealloc_pd(struct ib_pd *pd) 404 { 405 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 406 kfree(pd); 407 408 return 0; 409 } 410 411 static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 412 struct ib_ah_attr *ah_attr) 413 { 414 int err; 415 struct mthca_ah *ah; 416 417 ah = kmalloc(sizeof *ah, GFP_ATOMIC); 418 if (!ah) 419 return ERR_PTR(-ENOMEM); 420 421 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 422 if (err) { 423 kfree(ah); 424 return ERR_PTR(err); 425 } 426 427 return &ah->ibah; 428 } 429 430 static int mthca_ah_destroy(struct ib_ah *ah) 431 { 432 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 433 kfree(ah); 434 435 return 0; 436 } 437 438 static struct ib_srq *mthca_create_srq(struct ib_pd *pd, 439 struct ib_srq_init_attr *init_attr, 440 struct ib_udata *udata) 441 { 442 struct mthca_create_srq ucmd; 443 struct mthca_ucontext *context = NULL; 444 struct mthca_srq *srq; 445 int err; 446 447 if (init_attr->srq_type != IB_SRQT_BASIC) 448 return ERR_PTR(-ENOSYS); 449 450 srq = kmalloc(sizeof *srq, GFP_KERNEL); 451 if (!srq) 452 return ERR_PTR(-ENOMEM); 453 454 if (pd->uobject) { 455 context = to_mucontext(pd->uobject->context); 456 457 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 458 err = -EFAULT; 459 goto err_free; 460 } 461 462 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 463 context->db_tab, ucmd.db_index, 464 ucmd.db_page); 465 466 if (err) 467 goto err_free; 468 469 srq->mr.ibmr.lkey = ucmd.lkey; 470 srq->db_index = ucmd.db_index; 471 } 472 473 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd), 474 &init_attr->attr, srq); 475 476 if (err && pd->uobject) 477 mthca_unmap_user_db(to_mdev(pd->device), &context->uar, 478 context->db_tab, ucmd.db_index); 479 480 if (err) 481 goto err_free; 482 483 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) { 484 mthca_free_srq(to_mdev(pd->device), srq); 485 err = -EFAULT; 486 goto err_free; 487 } 488 489 return &srq->ibsrq; 490 491 err_free: 492 kfree(srq); 493 494 return ERR_PTR(err); 495 } 496 497 static int mthca_destroy_srq(struct ib_srq *srq) 498 { 499 struct mthca_ucontext *context; 500 501 if (srq->uobject) { 502 context = to_mucontext(srq->uobject->context); 503 504 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 505 context->db_tab, to_msrq(srq)->db_index); 506 } 507 508 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 509 kfree(srq); 510 511 return 0; 512 } 513 514 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 515 struct ib_qp_init_attr *init_attr, 516 struct ib_udata *udata) 517 { 518 struct mthca_create_qp ucmd; 519 struct mthca_qp *qp; 520 int err; 521 522 if (init_attr->create_flags) 523 return ERR_PTR(-EINVAL); 524 525 switch (init_attr->qp_type) { 526 case IB_QPT_RC: 527 case IB_QPT_UC: 528 case IB_QPT_UD: 529 { 530 struct mthca_ucontext *context; 531 532 qp = kmalloc(sizeof *qp, GFP_KERNEL); 533 if (!qp) 534 return ERR_PTR(-ENOMEM); 535 536 if (pd->uobject) { 537 context = to_mucontext(pd->uobject->context); 538 539 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 540 kfree(qp); 541 return ERR_PTR(-EFAULT); 542 } 543 544 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 545 context->db_tab, 546 ucmd.sq_db_index, ucmd.sq_db_page); 547 if (err) { 548 kfree(qp); 549 return ERR_PTR(err); 550 } 551 552 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 553 context->db_tab, 554 ucmd.rq_db_index, ucmd.rq_db_page); 555 if (err) { 556 mthca_unmap_user_db(to_mdev(pd->device), 557 &context->uar, 558 context->db_tab, 559 ucmd.sq_db_index); 560 kfree(qp); 561 return ERR_PTR(err); 562 } 563 564 qp->mr.ibmr.lkey = ucmd.lkey; 565 qp->sq.db_index = ucmd.sq_db_index; 566 qp->rq.db_index = ucmd.rq_db_index; 567 } 568 569 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 570 to_mcq(init_attr->send_cq), 571 to_mcq(init_attr->recv_cq), 572 init_attr->qp_type, init_attr->sq_sig_type, 573 &init_attr->cap, qp); 574 575 if (err && pd->uobject) { 576 context = to_mucontext(pd->uobject->context); 577 578 mthca_unmap_user_db(to_mdev(pd->device), 579 &context->uar, 580 context->db_tab, 581 ucmd.sq_db_index); 582 mthca_unmap_user_db(to_mdev(pd->device), 583 &context->uar, 584 context->db_tab, 585 ucmd.rq_db_index); 586 } 587 588 qp->ibqp.qp_num = qp->qpn; 589 break; 590 } 591 case IB_QPT_SMI: 592 case IB_QPT_GSI: 593 { 594 /* Don't allow userspace to create special QPs */ 595 if (pd->uobject) 596 return ERR_PTR(-EINVAL); 597 598 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 599 if (!qp) 600 return ERR_PTR(-ENOMEM); 601 602 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 603 604 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 605 to_mcq(init_attr->send_cq), 606 to_mcq(init_attr->recv_cq), 607 init_attr->sq_sig_type, &init_attr->cap, 608 qp->ibqp.qp_num, init_attr->port_num, 609 to_msqp(qp)); 610 break; 611 } 612 default: 613 /* Don't support raw QPs */ 614 return ERR_PTR(-ENOSYS); 615 } 616 617 if (err) { 618 kfree(qp); 619 return ERR_PTR(err); 620 } 621 622 init_attr->cap.max_send_wr = qp->sq.max; 623 init_attr->cap.max_recv_wr = qp->rq.max; 624 init_attr->cap.max_send_sge = qp->sq.max_gs; 625 init_attr->cap.max_recv_sge = qp->rq.max_gs; 626 init_attr->cap.max_inline_data = qp->max_inline_data; 627 628 return &qp->ibqp; 629 } 630 631 static int mthca_destroy_qp(struct ib_qp *qp) 632 { 633 if (qp->uobject) { 634 mthca_unmap_user_db(to_mdev(qp->device), 635 &to_mucontext(qp->uobject->context)->uar, 636 to_mucontext(qp->uobject->context)->db_tab, 637 to_mqp(qp)->sq.db_index); 638 mthca_unmap_user_db(to_mdev(qp->device), 639 &to_mucontext(qp->uobject->context)->uar, 640 to_mucontext(qp->uobject->context)->db_tab, 641 to_mqp(qp)->rq.db_index); 642 } 643 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 644 kfree(qp); 645 return 0; 646 } 647 648 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, 649 const struct ib_cq_init_attr *attr, 650 struct ib_ucontext *context, 651 struct ib_udata *udata) 652 { 653 int entries = attr->cqe; 654 struct mthca_create_cq ucmd; 655 struct mthca_cq *cq; 656 int nent; 657 int err; 658 659 if (attr->flags) 660 return ERR_PTR(-EINVAL); 661 662 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 663 return ERR_PTR(-EINVAL); 664 665 if (context) { 666 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 667 return ERR_PTR(-EFAULT); 668 669 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 670 to_mucontext(context)->db_tab, 671 ucmd.set_db_index, ucmd.set_db_page); 672 if (err) 673 return ERR_PTR(err); 674 675 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 676 to_mucontext(context)->db_tab, 677 ucmd.arm_db_index, ucmd.arm_db_page); 678 if (err) 679 goto err_unmap_set; 680 } 681 682 cq = kmalloc(sizeof *cq, GFP_KERNEL); 683 if (!cq) { 684 err = -ENOMEM; 685 goto err_unmap_arm; 686 } 687 688 if (context) { 689 cq->buf.mr.ibmr.lkey = ucmd.lkey; 690 cq->set_ci_db_index = ucmd.set_db_index; 691 cq->arm_db_index = ucmd.arm_db_index; 692 } 693 694 for (nent = 1; nent <= entries; nent <<= 1) 695 ; /* nothing */ 696 697 err = mthca_init_cq(to_mdev(ibdev), nent, 698 context ? to_mucontext(context) : NULL, 699 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 700 cq); 701 if (err) 702 goto err_free; 703 704 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) { 705 mthca_free_cq(to_mdev(ibdev), cq); 706 err = -EFAULT; 707 goto err_free; 708 } 709 710 cq->resize_buf = NULL; 711 712 return &cq->ibcq; 713 714 err_free: 715 kfree(cq); 716 717 err_unmap_arm: 718 if (context) 719 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 720 to_mucontext(context)->db_tab, ucmd.arm_db_index); 721 722 err_unmap_set: 723 if (context) 724 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 725 to_mucontext(context)->db_tab, ucmd.set_db_index); 726 727 return ERR_PTR(err); 728 } 729 730 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 731 int entries) 732 { 733 int ret; 734 735 spin_lock_irq(&cq->lock); 736 if (cq->resize_buf) { 737 ret = -EBUSY; 738 goto unlock; 739 } 740 741 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 742 if (!cq->resize_buf) { 743 ret = -ENOMEM; 744 goto unlock; 745 } 746 747 cq->resize_buf->state = CQ_RESIZE_ALLOC; 748 749 ret = 0; 750 751 unlock: 752 spin_unlock_irq(&cq->lock); 753 754 if (ret) 755 return ret; 756 757 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 758 if (ret) { 759 spin_lock_irq(&cq->lock); 760 kfree(cq->resize_buf); 761 cq->resize_buf = NULL; 762 spin_unlock_irq(&cq->lock); 763 return ret; 764 } 765 766 cq->resize_buf->cqe = entries - 1; 767 768 spin_lock_irq(&cq->lock); 769 cq->resize_buf->state = CQ_RESIZE_READY; 770 spin_unlock_irq(&cq->lock); 771 772 return 0; 773 } 774 775 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 776 { 777 struct mthca_dev *dev = to_mdev(ibcq->device); 778 struct mthca_cq *cq = to_mcq(ibcq); 779 struct mthca_resize_cq ucmd; 780 u32 lkey; 781 int ret; 782 783 if (entries < 1 || entries > dev->limits.max_cqes) 784 return -EINVAL; 785 786 mutex_lock(&cq->mutex); 787 788 entries = roundup_pow_of_two(entries + 1); 789 if (entries == ibcq->cqe + 1) { 790 ret = 0; 791 goto out; 792 } 793 794 if (cq->is_kernel) { 795 ret = mthca_alloc_resize_buf(dev, cq, entries); 796 if (ret) 797 goto out; 798 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 799 } else { 800 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 801 ret = -EFAULT; 802 goto out; 803 } 804 lkey = ucmd.lkey; 805 } 806 807 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries)); 808 809 if (ret) { 810 if (cq->resize_buf) { 811 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 812 cq->resize_buf->cqe); 813 kfree(cq->resize_buf); 814 spin_lock_irq(&cq->lock); 815 cq->resize_buf = NULL; 816 spin_unlock_irq(&cq->lock); 817 } 818 goto out; 819 } 820 821 if (cq->is_kernel) { 822 struct mthca_cq_buf tbuf; 823 int tcqe; 824 825 spin_lock_irq(&cq->lock); 826 if (cq->resize_buf->state == CQ_RESIZE_READY) { 827 mthca_cq_resize_copy_cqes(cq); 828 tbuf = cq->buf; 829 tcqe = cq->ibcq.cqe; 830 cq->buf = cq->resize_buf->buf; 831 cq->ibcq.cqe = cq->resize_buf->cqe; 832 } else { 833 tbuf = cq->resize_buf->buf; 834 tcqe = cq->resize_buf->cqe; 835 } 836 837 kfree(cq->resize_buf); 838 cq->resize_buf = NULL; 839 spin_unlock_irq(&cq->lock); 840 841 mthca_free_cq_buf(dev, &tbuf, tcqe); 842 } else 843 ibcq->cqe = entries - 1; 844 845 out: 846 mutex_unlock(&cq->mutex); 847 848 return ret; 849 } 850 851 static int mthca_destroy_cq(struct ib_cq *cq) 852 { 853 if (cq->uobject) { 854 mthca_unmap_user_db(to_mdev(cq->device), 855 &to_mucontext(cq->uobject->context)->uar, 856 to_mucontext(cq->uobject->context)->db_tab, 857 to_mcq(cq)->arm_db_index); 858 mthca_unmap_user_db(to_mdev(cq->device), 859 &to_mucontext(cq->uobject->context)->uar, 860 to_mucontext(cq->uobject->context)->db_tab, 861 to_mcq(cq)->set_ci_db_index); 862 } 863 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 864 kfree(cq); 865 866 return 0; 867 } 868 869 static inline u32 convert_access(int acc) 870 { 871 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 872 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 873 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 874 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 875 MTHCA_MPT_FLAG_LOCAL_READ; 876 } 877 878 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 879 { 880 struct mthca_mr *mr; 881 int err; 882 883 mr = kmalloc(sizeof *mr, GFP_KERNEL); 884 if (!mr) 885 return ERR_PTR(-ENOMEM); 886 887 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 888 to_mpd(pd)->pd_num, 889 convert_access(acc), mr); 890 891 if (err) { 892 kfree(mr); 893 return ERR_PTR(err); 894 } 895 896 mr->umem = NULL; 897 898 return &mr->ibmr; 899 } 900 901 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 902 u64 virt, int acc, struct ib_udata *udata) 903 { 904 struct mthca_dev *dev = to_mdev(pd->device); 905 struct scatterlist *sg; 906 struct mthca_mr *mr; 907 struct mthca_reg_mr ucmd; 908 u64 *pages; 909 int shift, n, len; 910 int i, k, entry; 911 int err = 0; 912 int write_mtt_size; 913 914 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) { 915 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) { 916 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n", 917 current->comm); 918 mthca_warn(dev, " Update libmthca to fix this.\n"); 919 } 920 ++to_mucontext(pd->uobject->context)->reg_mr_warned; 921 ucmd.mr_attrs = 0; 922 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 923 return ERR_PTR(-EFAULT); 924 925 mr = kmalloc(sizeof *mr, GFP_KERNEL); 926 if (!mr) 927 return ERR_PTR(-ENOMEM); 928 929 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 930 ucmd.mr_attrs & MTHCA_MR_DMASYNC); 931 932 if (IS_ERR(mr->umem)) { 933 err = PTR_ERR(mr->umem); 934 goto err; 935 } 936 937 shift = ffs(mr->umem->page_size) - 1; 938 n = mr->umem->nmap; 939 940 mr->mtt = mthca_alloc_mtt(dev, n); 941 if (IS_ERR(mr->mtt)) { 942 err = PTR_ERR(mr->mtt); 943 goto err_umem; 944 } 945 946 pages = (u64 *) __get_free_page(GFP_KERNEL); 947 if (!pages) { 948 err = -ENOMEM; 949 goto err_mtt; 950 } 951 952 i = n = 0; 953 954 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 955 956 for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) { 957 len = sg_dma_len(sg) >> shift; 958 for (k = 0; k < len; ++k) { 959 pages[i++] = sg_dma_address(sg) + 960 mr->umem->page_size * k; 961 /* 962 * Be friendly to write_mtt and pass it chunks 963 * of appropriate size. 964 */ 965 if (i == write_mtt_size) { 966 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 967 if (err) 968 goto mtt_done; 969 n += i; 970 i = 0; 971 } 972 } 973 } 974 975 if (i) 976 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 977 mtt_done: 978 free_page((unsigned long) pages); 979 if (err) 980 goto err_mtt; 981 982 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length, 983 convert_access(acc), mr); 984 985 if (err) 986 goto err_mtt; 987 988 return &mr->ibmr; 989 990 err_mtt: 991 mthca_free_mtt(dev, mr->mtt); 992 993 err_umem: 994 ib_umem_release(mr->umem); 995 996 err: 997 kfree(mr); 998 return ERR_PTR(err); 999 } 1000 1001 static int mthca_dereg_mr(struct ib_mr *mr) 1002 { 1003 struct mthca_mr *mmr = to_mmr(mr); 1004 1005 mthca_free_mr(to_mdev(mr->device), mmr); 1006 if (mmr->umem) 1007 ib_umem_release(mmr->umem); 1008 kfree(mmr); 1009 1010 return 0; 1011 } 1012 1013 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 1014 struct ib_fmr_attr *fmr_attr) 1015 { 1016 struct mthca_fmr *fmr; 1017 int err; 1018 1019 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 1020 if (!fmr) 1021 return ERR_PTR(-ENOMEM); 1022 1023 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 1024 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 1025 convert_access(mr_access_flags), fmr); 1026 1027 if (err) { 1028 kfree(fmr); 1029 return ERR_PTR(err); 1030 } 1031 1032 return &fmr->ibmr; 1033 } 1034 1035 static int mthca_dealloc_fmr(struct ib_fmr *fmr) 1036 { 1037 struct mthca_fmr *mfmr = to_mfmr(fmr); 1038 int err; 1039 1040 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 1041 if (err) 1042 return err; 1043 1044 kfree(mfmr); 1045 return 0; 1046 } 1047 1048 static int mthca_unmap_fmr(struct list_head *fmr_list) 1049 { 1050 struct ib_fmr *fmr; 1051 int err; 1052 struct mthca_dev *mdev = NULL; 1053 1054 list_for_each_entry(fmr, fmr_list, list) { 1055 if (mdev && to_mdev(fmr->device) != mdev) 1056 return -EINVAL; 1057 mdev = to_mdev(fmr->device); 1058 } 1059 1060 if (!mdev) 1061 return 0; 1062 1063 if (mthca_is_memfree(mdev)) { 1064 list_for_each_entry(fmr, fmr_list, list) 1065 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1066 1067 wmb(); 1068 } else 1069 list_for_each_entry(fmr, fmr_list, list) 1070 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1071 1072 err = mthca_SYNC_TPT(mdev); 1073 return err; 1074 } 1075 1076 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1077 char *buf) 1078 { 1079 struct mthca_dev *dev = 1080 container_of(device, struct mthca_dev, ib_dev.dev); 1081 return sprintf(buf, "%x\n", dev->rev_id); 1082 } 1083 1084 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1085 char *buf) 1086 { 1087 struct mthca_dev *dev = 1088 container_of(device, struct mthca_dev, ib_dev.dev); 1089 switch (dev->pdev->device) { 1090 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1091 return sprintf(buf, "MT23108\n"); 1092 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1093 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1094 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1095 return sprintf(buf, "MT25208\n"); 1096 case PCI_DEVICE_ID_MELLANOX_SINAI: 1097 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1098 return sprintf(buf, "MT25204\n"); 1099 default: 1100 return sprintf(buf, "unknown\n"); 1101 } 1102 } 1103 1104 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1105 char *buf) 1106 { 1107 struct mthca_dev *dev = 1108 container_of(device, struct mthca_dev, ib_dev.dev); 1109 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1110 } 1111 1112 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1113 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1114 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1115 1116 static struct device_attribute *mthca_dev_attributes[] = { 1117 &dev_attr_hw_rev, 1118 &dev_attr_hca_type, 1119 &dev_attr_board_id 1120 }; 1121 1122 static int mthca_init_node_data(struct mthca_dev *dev) 1123 { 1124 struct ib_smp *in_mad = NULL; 1125 struct ib_smp *out_mad = NULL; 1126 int err = -ENOMEM; 1127 1128 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1129 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1130 if (!in_mad || !out_mad) 1131 goto out; 1132 1133 init_query_mad(in_mad); 1134 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1135 1136 err = mthca_MAD_IFC(dev, 1, 1, 1137 1, NULL, NULL, in_mad, out_mad); 1138 if (err) 1139 goto out; 1140 1141 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1142 1143 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1144 1145 err = mthca_MAD_IFC(dev, 1, 1, 1146 1, NULL, NULL, in_mad, out_mad); 1147 if (err) 1148 goto out; 1149 1150 if (mthca_is_memfree(dev)) 1151 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1152 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1153 1154 out: 1155 kfree(in_mad); 1156 kfree(out_mad); 1157 return err; 1158 } 1159 1160 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num, 1161 struct ib_port_immutable *immutable) 1162 { 1163 struct ib_port_attr attr; 1164 int err; 1165 1166 err = mthca_query_port(ibdev, port_num, &attr); 1167 if (err) 1168 return err; 1169 1170 immutable->pkey_tbl_len = attr.pkey_tbl_len; 1171 immutable->gid_tbl_len = attr.gid_tbl_len; 1172 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 1173 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 1174 1175 return 0; 1176 } 1177 1178 static void get_dev_fw_str(struct ib_device *device, char *str, 1179 size_t str_len) 1180 { 1181 struct mthca_dev *dev = 1182 container_of(device, struct mthca_dev, ib_dev); 1183 snprintf(str, str_len, "%d.%d.%d", 1184 (int) (dev->fw_ver >> 32), 1185 (int) (dev->fw_ver >> 16) & 0xffff, 1186 (int) dev->fw_ver & 0xffff); 1187 } 1188 1189 int mthca_register_device(struct mthca_dev *dev) 1190 { 1191 int ret; 1192 int i; 1193 1194 ret = mthca_init_node_data(dev); 1195 if (ret) 1196 return ret; 1197 1198 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1199 dev->ib_dev.owner = THIS_MODULE; 1200 1201 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1202 dev->ib_dev.uverbs_cmd_mask = 1203 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1204 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1205 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1206 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1207 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1208 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1209 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1210 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1211 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1212 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1213 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1214 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1215 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1216 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1217 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1218 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1219 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1220 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1221 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1222 dev->ib_dev.num_comp_vectors = 1; 1223 dev->ib_dev.dma_device = &dev->pdev->dev; 1224 dev->ib_dev.query_device = mthca_query_device; 1225 dev->ib_dev.query_port = mthca_query_port; 1226 dev->ib_dev.modify_device = mthca_modify_device; 1227 dev->ib_dev.modify_port = mthca_modify_port; 1228 dev->ib_dev.query_pkey = mthca_query_pkey; 1229 dev->ib_dev.query_gid = mthca_query_gid; 1230 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1231 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1232 dev->ib_dev.mmap = mthca_mmap_uar; 1233 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1234 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1235 dev->ib_dev.create_ah = mthca_ah_create; 1236 dev->ib_dev.query_ah = mthca_ah_query; 1237 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1238 1239 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1240 dev->ib_dev.create_srq = mthca_create_srq; 1241 dev->ib_dev.modify_srq = mthca_modify_srq; 1242 dev->ib_dev.query_srq = mthca_query_srq; 1243 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1244 dev->ib_dev.uverbs_cmd_mask |= 1245 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1246 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1247 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1248 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1249 1250 if (mthca_is_memfree(dev)) 1251 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1252 else 1253 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1254 } 1255 1256 dev->ib_dev.create_qp = mthca_create_qp; 1257 dev->ib_dev.modify_qp = mthca_modify_qp; 1258 dev->ib_dev.query_qp = mthca_query_qp; 1259 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1260 dev->ib_dev.create_cq = mthca_create_cq; 1261 dev->ib_dev.resize_cq = mthca_resize_cq; 1262 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1263 dev->ib_dev.poll_cq = mthca_poll_cq; 1264 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1265 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1266 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1267 dev->ib_dev.get_port_immutable = mthca_port_immutable; 1268 dev->ib_dev.get_dev_fw_str = get_dev_fw_str; 1269 1270 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1271 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1272 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1273 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1274 if (mthca_is_memfree(dev)) 1275 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1276 else 1277 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1278 } 1279 1280 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1281 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1282 dev->ib_dev.process_mad = mthca_process_mad; 1283 1284 if (mthca_is_memfree(dev)) { 1285 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1286 dev->ib_dev.post_send = mthca_arbel_post_send; 1287 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1288 } else { 1289 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1290 dev->ib_dev.post_send = mthca_tavor_post_send; 1291 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1292 } 1293 1294 mutex_init(&dev->cap_mask_mutex); 1295 1296 ret = ib_register_device(&dev->ib_dev, NULL); 1297 if (ret) 1298 return ret; 1299 1300 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) { 1301 ret = device_create_file(&dev->ib_dev.dev, 1302 mthca_dev_attributes[i]); 1303 if (ret) { 1304 ib_unregister_device(&dev->ib_dev); 1305 return ret; 1306 } 1307 } 1308 1309 mthca_start_catas_poll(dev); 1310 1311 return 0; 1312 } 1313 1314 void mthca_unregister_device(struct mthca_dev *dev) 1315 { 1316 mthca_stop_catas_poll(dev); 1317 ib_unregister_device(&dev->ib_dev); 1318 } 1319