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 * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $ 37 */ 38 39 #include <rdma/ib_smi.h> 40 #include <rdma/ib_umem.h> 41 #include <rdma/ib_user_verbs.h> 42 #include <linux/mm.h> 43 44 #include "mthca_dev.h" 45 #include "mthca_cmd.h" 46 #include "mthca_user.h" 47 #include "mthca_memfree.h" 48 49 static void init_query_mad(struct ib_smp *mad) 50 { 51 mad->base_version = 1; 52 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 53 mad->class_version = 1; 54 mad->method = IB_MGMT_METHOD_GET; 55 } 56 57 static int mthca_query_device(struct ib_device *ibdev, 58 struct ib_device_attr *props) 59 { 60 struct ib_smp *in_mad = NULL; 61 struct ib_smp *out_mad = NULL; 62 int err = -ENOMEM; 63 struct mthca_dev *mdev = to_mdev(ibdev); 64 65 u8 status; 66 67 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 68 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 69 if (!in_mad || !out_mad) 70 goto out; 71 72 memset(props, 0, sizeof *props); 73 74 props->fw_ver = mdev->fw_ver; 75 76 init_query_mad(in_mad); 77 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 78 79 err = mthca_MAD_IFC(mdev, 1, 1, 80 1, NULL, NULL, in_mad, out_mad, 81 &status); 82 if (err) 83 goto out; 84 if (status) { 85 err = -EINVAL; 86 goto out; 87 } 88 89 props->device_cap_flags = mdev->device_cap_flags; 90 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 91 0xffffff; 92 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 93 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 94 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 95 96 props->max_mr_size = ~0ull; 97 props->page_size_cap = mdev->limits.page_size_cap; 98 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps; 99 props->max_qp_wr = mdev->limits.max_wqes; 100 props->max_sge = mdev->limits.max_sg; 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 u8 status; 144 145 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 146 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 147 if (!in_mad || !out_mad) 148 goto out; 149 150 memset(props, 0, sizeof *props); 151 152 init_query_mad(in_mad); 153 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 154 in_mad->attr_mod = cpu_to_be32(port); 155 156 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 157 port, NULL, NULL, in_mad, out_mad, 158 &status); 159 if (err) 160 goto out; 161 if (status) { 162 err = -EINVAL; 163 goto out; 164 } 165 166 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 167 props->lmc = out_mad->data[34] & 0x7; 168 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 169 props->sm_sl = out_mad->data[36] & 0xf; 170 props->state = out_mad->data[32] & 0xf; 171 props->phys_state = out_mad->data[33] >> 4; 172 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 173 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len; 174 props->max_msg_sz = 0x80000000; 175 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len; 176 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 177 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 178 props->active_width = out_mad->data[31] & 0xf; 179 props->active_speed = out_mad->data[35] >> 4; 180 props->max_mtu = out_mad->data[41] & 0xf; 181 props->active_mtu = out_mad->data[36] >> 4; 182 props->subnet_timeout = out_mad->data[51] & 0x1f; 183 props->max_vl_num = out_mad->data[37] >> 4; 184 props->init_type_reply = out_mad->data[41] >> 4; 185 186 out: 187 kfree(in_mad); 188 kfree(out_mad); 189 return err; 190 } 191 192 static int mthca_modify_device(struct ib_device *ibdev, 193 int mask, 194 struct ib_device_modify *props) 195 { 196 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 197 return -EOPNOTSUPP; 198 199 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 200 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 201 return -ERESTARTSYS; 202 memcpy(ibdev->node_desc, props->node_desc, 64); 203 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 204 } 205 206 return 0; 207 } 208 209 static int mthca_modify_port(struct ib_device *ibdev, 210 u8 port, int port_modify_mask, 211 struct ib_port_modify *props) 212 { 213 struct mthca_set_ib_param set_ib; 214 struct ib_port_attr attr; 215 int err; 216 u8 status; 217 218 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 219 return -ERESTARTSYS; 220 221 err = mthca_query_port(ibdev, port, &attr); 222 if (err) 223 goto out; 224 225 set_ib.set_si_guid = 0; 226 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 227 228 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 229 ~props->clr_port_cap_mask; 230 231 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status); 232 if (err) 233 goto out; 234 if (status) { 235 err = -EINVAL; 236 goto out; 237 } 238 239 out: 240 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 241 return err; 242 } 243 244 static int mthca_query_pkey(struct ib_device *ibdev, 245 u8 port, u16 index, u16 *pkey) 246 { 247 struct ib_smp *in_mad = NULL; 248 struct ib_smp *out_mad = NULL; 249 int err = -ENOMEM; 250 u8 status; 251 252 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 253 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 254 if (!in_mad || !out_mad) 255 goto out; 256 257 init_query_mad(in_mad); 258 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 259 in_mad->attr_mod = cpu_to_be32(index / 32); 260 261 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 262 port, NULL, NULL, in_mad, out_mad, 263 &status); 264 if (err) 265 goto out; 266 if (status) { 267 err = -EINVAL; 268 goto out; 269 } 270 271 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 272 273 out: 274 kfree(in_mad); 275 kfree(out_mad); 276 return err; 277 } 278 279 static int mthca_query_gid(struct ib_device *ibdev, u8 port, 280 int index, union ib_gid *gid) 281 { 282 struct ib_smp *in_mad = NULL; 283 struct ib_smp *out_mad = NULL; 284 int err = -ENOMEM; 285 u8 status; 286 287 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 288 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 289 if (!in_mad || !out_mad) 290 goto out; 291 292 init_query_mad(in_mad); 293 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 294 in_mad->attr_mod = cpu_to_be32(port); 295 296 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 297 port, NULL, NULL, in_mad, out_mad, 298 &status); 299 if (err) 300 goto out; 301 if (status) { 302 err = -EINVAL; 303 goto out; 304 } 305 306 memcpy(gid->raw, out_mad->data + 8, 8); 307 308 init_query_mad(in_mad); 309 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 310 in_mad->attr_mod = cpu_to_be32(index / 8); 311 312 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 313 port, NULL, NULL, in_mad, out_mad, 314 &status); 315 if (err) 316 goto out; 317 if (status) { 318 err = -EINVAL; 319 goto out; 320 } 321 322 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 323 324 out: 325 kfree(in_mad); 326 kfree(out_mad); 327 return err; 328 } 329 330 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev, 331 struct ib_udata *udata) 332 { 333 struct mthca_alloc_ucontext_resp uresp; 334 struct mthca_ucontext *context; 335 int err; 336 337 memset(&uresp, 0, sizeof uresp); 338 339 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps; 340 if (mthca_is_memfree(to_mdev(ibdev))) 341 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size; 342 else 343 uresp.uarc_size = 0; 344 345 context = kmalloc(sizeof *context, GFP_KERNEL); 346 if (!context) 347 return ERR_PTR(-ENOMEM); 348 349 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 350 if (err) { 351 kfree(context); 352 return ERR_PTR(err); 353 } 354 355 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 356 if (IS_ERR(context->db_tab)) { 357 err = PTR_ERR(context->db_tab); 358 mthca_uar_free(to_mdev(ibdev), &context->uar); 359 kfree(context); 360 return ERR_PTR(err); 361 } 362 363 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 364 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 365 mthca_uar_free(to_mdev(ibdev), &context->uar); 366 kfree(context); 367 return ERR_PTR(-EFAULT); 368 } 369 370 return &context->ibucontext; 371 } 372 373 static int mthca_dealloc_ucontext(struct ib_ucontext *context) 374 { 375 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 376 to_mucontext(context)->db_tab); 377 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 378 kfree(to_mucontext(context)); 379 380 return 0; 381 } 382 383 static int mthca_mmap_uar(struct ib_ucontext *context, 384 struct vm_area_struct *vma) 385 { 386 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 387 return -EINVAL; 388 389 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; 395 396 return 0; 397 } 398 399 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev, 400 struct ib_ucontext *context, 401 struct ib_udata *udata) 402 { 403 struct mthca_pd *pd; 404 int err; 405 406 pd = kmalloc(sizeof *pd, GFP_KERNEL); 407 if (!pd) 408 return ERR_PTR(-ENOMEM); 409 410 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd); 411 if (err) { 412 kfree(pd); 413 return ERR_PTR(err); 414 } 415 416 if (context) { 417 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 418 mthca_pd_free(to_mdev(ibdev), pd); 419 kfree(pd); 420 return ERR_PTR(-EFAULT); 421 } 422 } 423 424 return &pd->ibpd; 425 } 426 427 static int mthca_dealloc_pd(struct ib_pd *pd) 428 { 429 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 430 kfree(pd); 431 432 return 0; 433 } 434 435 static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 436 struct ib_ah_attr *ah_attr) 437 { 438 int err; 439 struct mthca_ah *ah; 440 441 ah = kmalloc(sizeof *ah, GFP_ATOMIC); 442 if (!ah) 443 return ERR_PTR(-ENOMEM); 444 445 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 446 if (err) { 447 kfree(ah); 448 return ERR_PTR(err); 449 } 450 451 return &ah->ibah; 452 } 453 454 static int mthca_ah_destroy(struct ib_ah *ah) 455 { 456 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 457 kfree(ah); 458 459 return 0; 460 } 461 462 static struct ib_srq *mthca_create_srq(struct ib_pd *pd, 463 struct ib_srq_init_attr *init_attr, 464 struct ib_udata *udata) 465 { 466 struct mthca_create_srq ucmd; 467 struct mthca_ucontext *context = NULL; 468 struct mthca_srq *srq; 469 int err; 470 471 srq = kmalloc(sizeof *srq, GFP_KERNEL); 472 if (!srq) 473 return ERR_PTR(-ENOMEM); 474 475 if (pd->uobject) { 476 context = to_mucontext(pd->uobject->context); 477 478 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 479 err = -EFAULT; 480 goto err_free; 481 } 482 483 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 484 context->db_tab, ucmd.db_index, 485 ucmd.db_page); 486 487 if (err) 488 goto err_free; 489 490 srq->mr.ibmr.lkey = ucmd.lkey; 491 srq->db_index = ucmd.db_index; 492 } 493 494 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd), 495 &init_attr->attr, srq); 496 497 if (err && pd->uobject) 498 mthca_unmap_user_db(to_mdev(pd->device), &context->uar, 499 context->db_tab, ucmd.db_index); 500 501 if (err) 502 goto err_free; 503 504 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) { 505 mthca_free_srq(to_mdev(pd->device), srq); 506 err = -EFAULT; 507 goto err_free; 508 } 509 510 return &srq->ibsrq; 511 512 err_free: 513 kfree(srq); 514 515 return ERR_PTR(err); 516 } 517 518 static int mthca_destroy_srq(struct ib_srq *srq) 519 { 520 struct mthca_ucontext *context; 521 522 if (srq->uobject) { 523 context = to_mucontext(srq->uobject->context); 524 525 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 526 context->db_tab, to_msrq(srq)->db_index); 527 } 528 529 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 530 kfree(srq); 531 532 return 0; 533 } 534 535 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 536 struct ib_qp_init_attr *init_attr, 537 struct ib_udata *udata) 538 { 539 struct mthca_create_qp ucmd; 540 struct mthca_qp *qp; 541 int err; 542 543 if (init_attr->create_flags) 544 return ERR_PTR(-EINVAL); 545 546 switch (init_attr->qp_type) { 547 case IB_QPT_RC: 548 case IB_QPT_UC: 549 case IB_QPT_UD: 550 { 551 struct mthca_ucontext *context; 552 553 qp = kmalloc(sizeof *qp, GFP_KERNEL); 554 if (!qp) 555 return ERR_PTR(-ENOMEM); 556 557 if (pd->uobject) { 558 context = to_mucontext(pd->uobject->context); 559 560 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 561 kfree(qp); 562 return ERR_PTR(-EFAULT); 563 } 564 565 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 566 context->db_tab, 567 ucmd.sq_db_index, ucmd.sq_db_page); 568 if (err) { 569 kfree(qp); 570 return ERR_PTR(err); 571 } 572 573 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 574 context->db_tab, 575 ucmd.rq_db_index, ucmd.rq_db_page); 576 if (err) { 577 mthca_unmap_user_db(to_mdev(pd->device), 578 &context->uar, 579 context->db_tab, 580 ucmd.sq_db_index); 581 kfree(qp); 582 return ERR_PTR(err); 583 } 584 585 qp->mr.ibmr.lkey = ucmd.lkey; 586 qp->sq.db_index = ucmd.sq_db_index; 587 qp->rq.db_index = ucmd.rq_db_index; 588 } 589 590 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 591 to_mcq(init_attr->send_cq), 592 to_mcq(init_attr->recv_cq), 593 init_attr->qp_type, init_attr->sq_sig_type, 594 &init_attr->cap, qp); 595 596 if (err && pd->uobject) { 597 context = to_mucontext(pd->uobject->context); 598 599 mthca_unmap_user_db(to_mdev(pd->device), 600 &context->uar, 601 context->db_tab, 602 ucmd.sq_db_index); 603 mthca_unmap_user_db(to_mdev(pd->device), 604 &context->uar, 605 context->db_tab, 606 ucmd.rq_db_index); 607 } 608 609 qp->ibqp.qp_num = qp->qpn; 610 break; 611 } 612 case IB_QPT_SMI: 613 case IB_QPT_GSI: 614 { 615 /* Don't allow userspace to create special QPs */ 616 if (pd->uobject) 617 return ERR_PTR(-EINVAL); 618 619 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 620 if (!qp) 621 return ERR_PTR(-ENOMEM); 622 623 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 624 625 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 626 to_mcq(init_attr->send_cq), 627 to_mcq(init_attr->recv_cq), 628 init_attr->sq_sig_type, &init_attr->cap, 629 qp->ibqp.qp_num, init_attr->port_num, 630 to_msqp(qp)); 631 break; 632 } 633 default: 634 /* Don't support raw QPs */ 635 return ERR_PTR(-ENOSYS); 636 } 637 638 if (err) { 639 kfree(qp); 640 return ERR_PTR(err); 641 } 642 643 init_attr->cap.max_send_wr = qp->sq.max; 644 init_attr->cap.max_recv_wr = qp->rq.max; 645 init_attr->cap.max_send_sge = qp->sq.max_gs; 646 init_attr->cap.max_recv_sge = qp->rq.max_gs; 647 init_attr->cap.max_inline_data = qp->max_inline_data; 648 649 return &qp->ibqp; 650 } 651 652 static int mthca_destroy_qp(struct ib_qp *qp) 653 { 654 if (qp->uobject) { 655 mthca_unmap_user_db(to_mdev(qp->device), 656 &to_mucontext(qp->uobject->context)->uar, 657 to_mucontext(qp->uobject->context)->db_tab, 658 to_mqp(qp)->sq.db_index); 659 mthca_unmap_user_db(to_mdev(qp->device), 660 &to_mucontext(qp->uobject->context)->uar, 661 to_mucontext(qp->uobject->context)->db_tab, 662 to_mqp(qp)->rq.db_index); 663 } 664 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 665 kfree(qp); 666 return 0; 667 } 668 669 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries, 670 int comp_vector, 671 struct ib_ucontext *context, 672 struct ib_udata *udata) 673 { 674 struct mthca_create_cq ucmd; 675 struct mthca_cq *cq; 676 int nent; 677 int err; 678 679 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 680 return ERR_PTR(-EINVAL); 681 682 if (context) { 683 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 684 return ERR_PTR(-EFAULT); 685 686 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 687 to_mucontext(context)->db_tab, 688 ucmd.set_db_index, ucmd.set_db_page); 689 if (err) 690 return ERR_PTR(err); 691 692 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 693 to_mucontext(context)->db_tab, 694 ucmd.arm_db_index, ucmd.arm_db_page); 695 if (err) 696 goto err_unmap_set; 697 } 698 699 cq = kmalloc(sizeof *cq, GFP_KERNEL); 700 if (!cq) { 701 err = -ENOMEM; 702 goto err_unmap_arm; 703 } 704 705 if (context) { 706 cq->buf.mr.ibmr.lkey = ucmd.lkey; 707 cq->set_ci_db_index = ucmd.set_db_index; 708 cq->arm_db_index = ucmd.arm_db_index; 709 } 710 711 for (nent = 1; nent <= entries; nent <<= 1) 712 ; /* nothing */ 713 714 err = mthca_init_cq(to_mdev(ibdev), nent, 715 context ? to_mucontext(context) : NULL, 716 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 717 cq); 718 if (err) 719 goto err_free; 720 721 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) { 722 mthca_free_cq(to_mdev(ibdev), cq); 723 goto err_free; 724 } 725 726 cq->resize_buf = NULL; 727 728 return &cq->ibcq; 729 730 err_free: 731 kfree(cq); 732 733 err_unmap_arm: 734 if (context) 735 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 736 to_mucontext(context)->db_tab, ucmd.arm_db_index); 737 738 err_unmap_set: 739 if (context) 740 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 741 to_mucontext(context)->db_tab, ucmd.set_db_index); 742 743 return ERR_PTR(err); 744 } 745 746 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 747 int entries) 748 { 749 int ret; 750 751 spin_lock_irq(&cq->lock); 752 if (cq->resize_buf) { 753 ret = -EBUSY; 754 goto unlock; 755 } 756 757 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 758 if (!cq->resize_buf) { 759 ret = -ENOMEM; 760 goto unlock; 761 } 762 763 cq->resize_buf->state = CQ_RESIZE_ALLOC; 764 765 ret = 0; 766 767 unlock: 768 spin_unlock_irq(&cq->lock); 769 770 if (ret) 771 return ret; 772 773 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 774 if (ret) { 775 spin_lock_irq(&cq->lock); 776 kfree(cq->resize_buf); 777 cq->resize_buf = NULL; 778 spin_unlock_irq(&cq->lock); 779 return ret; 780 } 781 782 cq->resize_buf->cqe = entries - 1; 783 784 spin_lock_irq(&cq->lock); 785 cq->resize_buf->state = CQ_RESIZE_READY; 786 spin_unlock_irq(&cq->lock); 787 788 return 0; 789 } 790 791 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 792 { 793 struct mthca_dev *dev = to_mdev(ibcq->device); 794 struct mthca_cq *cq = to_mcq(ibcq); 795 struct mthca_resize_cq ucmd; 796 u32 lkey; 797 u8 status; 798 int ret; 799 800 if (entries < 1 || entries > dev->limits.max_cqes) 801 return -EINVAL; 802 803 mutex_lock(&cq->mutex); 804 805 entries = roundup_pow_of_two(entries + 1); 806 if (entries == ibcq->cqe + 1) { 807 ret = 0; 808 goto out; 809 } 810 811 if (cq->is_kernel) { 812 ret = mthca_alloc_resize_buf(dev, cq, entries); 813 if (ret) 814 goto out; 815 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 816 } else { 817 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 818 ret = -EFAULT; 819 goto out; 820 } 821 lkey = ucmd.lkey; 822 } 823 824 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status); 825 if (status) 826 ret = -EINVAL; 827 828 if (ret) { 829 if (cq->resize_buf) { 830 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 831 cq->resize_buf->cqe); 832 kfree(cq->resize_buf); 833 spin_lock_irq(&cq->lock); 834 cq->resize_buf = NULL; 835 spin_unlock_irq(&cq->lock); 836 } 837 goto out; 838 } 839 840 if (cq->is_kernel) { 841 struct mthca_cq_buf tbuf; 842 int tcqe; 843 844 spin_lock_irq(&cq->lock); 845 if (cq->resize_buf->state == CQ_RESIZE_READY) { 846 mthca_cq_resize_copy_cqes(cq); 847 tbuf = cq->buf; 848 tcqe = cq->ibcq.cqe; 849 cq->buf = cq->resize_buf->buf; 850 cq->ibcq.cqe = cq->resize_buf->cqe; 851 } else { 852 tbuf = cq->resize_buf->buf; 853 tcqe = cq->resize_buf->cqe; 854 } 855 856 kfree(cq->resize_buf); 857 cq->resize_buf = NULL; 858 spin_unlock_irq(&cq->lock); 859 860 mthca_free_cq_buf(dev, &tbuf, tcqe); 861 } else 862 ibcq->cqe = entries - 1; 863 864 out: 865 mutex_unlock(&cq->mutex); 866 867 return ret; 868 } 869 870 static int mthca_destroy_cq(struct ib_cq *cq) 871 { 872 if (cq->uobject) { 873 mthca_unmap_user_db(to_mdev(cq->device), 874 &to_mucontext(cq->uobject->context)->uar, 875 to_mucontext(cq->uobject->context)->db_tab, 876 to_mcq(cq)->arm_db_index); 877 mthca_unmap_user_db(to_mdev(cq->device), 878 &to_mucontext(cq->uobject->context)->uar, 879 to_mucontext(cq->uobject->context)->db_tab, 880 to_mcq(cq)->set_ci_db_index); 881 } 882 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 883 kfree(cq); 884 885 return 0; 886 } 887 888 static inline u32 convert_access(int acc) 889 { 890 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 891 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 892 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 893 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 894 MTHCA_MPT_FLAG_LOCAL_READ; 895 } 896 897 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 898 { 899 struct mthca_mr *mr; 900 int err; 901 902 mr = kmalloc(sizeof *mr, GFP_KERNEL); 903 if (!mr) 904 return ERR_PTR(-ENOMEM); 905 906 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 907 to_mpd(pd)->pd_num, 908 convert_access(acc), mr); 909 910 if (err) { 911 kfree(mr); 912 return ERR_PTR(err); 913 } 914 915 mr->umem = NULL; 916 917 return &mr->ibmr; 918 } 919 920 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd, 921 struct ib_phys_buf *buffer_list, 922 int num_phys_buf, 923 int acc, 924 u64 *iova_start) 925 { 926 struct mthca_mr *mr; 927 u64 *page_list; 928 u64 total_size; 929 unsigned long mask; 930 int shift; 931 int npages; 932 int err; 933 int i, j, n; 934 935 mask = buffer_list[0].addr ^ *iova_start; 936 total_size = 0; 937 for (i = 0; i < num_phys_buf; ++i) { 938 if (i != 0) 939 mask |= buffer_list[i].addr; 940 if (i != num_phys_buf - 1) 941 mask |= buffer_list[i].addr + buffer_list[i].size; 942 943 total_size += buffer_list[i].size; 944 } 945 946 if (mask & ~PAGE_MASK) 947 return ERR_PTR(-EINVAL); 948 949 shift = __ffs(mask | 1 << 31); 950 951 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1); 952 buffer_list[0].addr &= ~0ull << shift; 953 954 mr = kmalloc(sizeof *mr, GFP_KERNEL); 955 if (!mr) 956 return ERR_PTR(-ENOMEM); 957 958 npages = 0; 959 for (i = 0; i < num_phys_buf; ++i) 960 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 961 962 if (!npages) 963 return &mr->ibmr; 964 965 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL); 966 if (!page_list) { 967 kfree(mr); 968 return ERR_PTR(-ENOMEM); 969 } 970 971 n = 0; 972 for (i = 0; i < num_phys_buf; ++i) 973 for (j = 0; 974 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 975 ++j) 976 page_list[n++] = buffer_list[i].addr + ((u64) j << shift); 977 978 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) " 979 "in PD %x; shift %d, npages %d.\n", 980 (unsigned long long) buffer_list[0].addr, 981 (unsigned long long) *iova_start, 982 to_mpd(pd)->pd_num, 983 shift, npages); 984 985 err = mthca_mr_alloc_phys(to_mdev(pd->device), 986 to_mpd(pd)->pd_num, 987 page_list, shift, npages, 988 *iova_start, total_size, 989 convert_access(acc), mr); 990 991 if (err) { 992 kfree(page_list); 993 kfree(mr); 994 return ERR_PTR(err); 995 } 996 997 kfree(page_list); 998 mr->umem = NULL; 999 1000 return &mr->ibmr; 1001 } 1002 1003 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 1004 u64 virt, int acc, struct ib_udata *udata) 1005 { 1006 struct mthca_dev *dev = to_mdev(pd->device); 1007 struct ib_umem_chunk *chunk; 1008 struct mthca_mr *mr; 1009 u64 *pages; 1010 int shift, n, len; 1011 int i, j, k; 1012 int err = 0; 1013 int write_mtt_size; 1014 1015 mr = kmalloc(sizeof *mr, GFP_KERNEL); 1016 if (!mr) 1017 return ERR_PTR(-ENOMEM); 1018 1019 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc); 1020 if (IS_ERR(mr->umem)) { 1021 err = PTR_ERR(mr->umem); 1022 goto err; 1023 } 1024 1025 shift = ffs(mr->umem->page_size) - 1; 1026 1027 n = 0; 1028 list_for_each_entry(chunk, &mr->umem->chunk_list, list) 1029 n += chunk->nents; 1030 1031 mr->mtt = mthca_alloc_mtt(dev, n); 1032 if (IS_ERR(mr->mtt)) { 1033 err = PTR_ERR(mr->mtt); 1034 goto err_umem; 1035 } 1036 1037 pages = (u64 *) __get_free_page(GFP_KERNEL); 1038 if (!pages) { 1039 err = -ENOMEM; 1040 goto err_mtt; 1041 } 1042 1043 i = n = 0; 1044 1045 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 1046 1047 list_for_each_entry(chunk, &mr->umem->chunk_list, list) 1048 for (j = 0; j < chunk->nmap; ++j) { 1049 len = sg_dma_len(&chunk->page_list[j]) >> shift; 1050 for (k = 0; k < len; ++k) { 1051 pages[i++] = sg_dma_address(&chunk->page_list[j]) + 1052 mr->umem->page_size * k; 1053 /* 1054 * Be friendly to write_mtt and pass it chunks 1055 * of appropriate size. 1056 */ 1057 if (i == write_mtt_size) { 1058 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 1059 if (err) 1060 goto mtt_done; 1061 n += i; 1062 i = 0; 1063 } 1064 } 1065 } 1066 1067 if (i) 1068 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 1069 mtt_done: 1070 free_page((unsigned long) pages); 1071 if (err) 1072 goto err_mtt; 1073 1074 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length, 1075 convert_access(acc), mr); 1076 1077 if (err) 1078 goto err_mtt; 1079 1080 return &mr->ibmr; 1081 1082 err_mtt: 1083 mthca_free_mtt(dev, mr->mtt); 1084 1085 err_umem: 1086 ib_umem_release(mr->umem); 1087 1088 err: 1089 kfree(mr); 1090 return ERR_PTR(err); 1091 } 1092 1093 static int mthca_dereg_mr(struct ib_mr *mr) 1094 { 1095 struct mthca_mr *mmr = to_mmr(mr); 1096 1097 mthca_free_mr(to_mdev(mr->device), mmr); 1098 if (mmr->umem) 1099 ib_umem_release(mmr->umem); 1100 kfree(mmr); 1101 1102 return 0; 1103 } 1104 1105 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 1106 struct ib_fmr_attr *fmr_attr) 1107 { 1108 struct mthca_fmr *fmr; 1109 int err; 1110 1111 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 1112 if (!fmr) 1113 return ERR_PTR(-ENOMEM); 1114 1115 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 1116 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 1117 convert_access(mr_access_flags), fmr); 1118 1119 if (err) { 1120 kfree(fmr); 1121 return ERR_PTR(err); 1122 } 1123 1124 return &fmr->ibmr; 1125 } 1126 1127 static int mthca_dealloc_fmr(struct ib_fmr *fmr) 1128 { 1129 struct mthca_fmr *mfmr = to_mfmr(fmr); 1130 int err; 1131 1132 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 1133 if (err) 1134 return err; 1135 1136 kfree(mfmr); 1137 return 0; 1138 } 1139 1140 static int mthca_unmap_fmr(struct list_head *fmr_list) 1141 { 1142 struct ib_fmr *fmr; 1143 int err; 1144 u8 status; 1145 struct mthca_dev *mdev = NULL; 1146 1147 list_for_each_entry(fmr, fmr_list, list) { 1148 if (mdev && to_mdev(fmr->device) != mdev) 1149 return -EINVAL; 1150 mdev = to_mdev(fmr->device); 1151 } 1152 1153 if (!mdev) 1154 return 0; 1155 1156 if (mthca_is_memfree(mdev)) { 1157 list_for_each_entry(fmr, fmr_list, list) 1158 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1159 1160 wmb(); 1161 } else 1162 list_for_each_entry(fmr, fmr_list, list) 1163 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1164 1165 err = mthca_SYNC_TPT(mdev, &status); 1166 if (err) 1167 return err; 1168 if (status) 1169 return -EINVAL; 1170 return 0; 1171 } 1172 1173 static ssize_t show_rev(struct class_device *cdev, char *buf) 1174 { 1175 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1176 return sprintf(buf, "%x\n", dev->rev_id); 1177 } 1178 1179 static ssize_t show_fw_ver(struct class_device *cdev, char *buf) 1180 { 1181 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1182 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32), 1183 (int) (dev->fw_ver >> 16) & 0xffff, 1184 (int) dev->fw_ver & 0xffff); 1185 } 1186 1187 static ssize_t show_hca(struct class_device *cdev, char *buf) 1188 { 1189 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1190 switch (dev->pdev->device) { 1191 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1192 return sprintf(buf, "MT23108\n"); 1193 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1194 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1195 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1196 return sprintf(buf, "MT25208\n"); 1197 case PCI_DEVICE_ID_MELLANOX_SINAI: 1198 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1199 return sprintf(buf, "MT25204\n"); 1200 default: 1201 return sprintf(buf, "unknown\n"); 1202 } 1203 } 1204 1205 static ssize_t show_board(struct class_device *cdev, char *buf) 1206 { 1207 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1208 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1209 } 1210 1211 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1212 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1213 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1214 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1215 1216 static struct class_device_attribute *mthca_class_attributes[] = { 1217 &class_device_attr_hw_rev, 1218 &class_device_attr_fw_ver, 1219 &class_device_attr_hca_type, 1220 &class_device_attr_board_id 1221 }; 1222 1223 static int mthca_init_node_data(struct mthca_dev *dev) 1224 { 1225 struct ib_smp *in_mad = NULL; 1226 struct ib_smp *out_mad = NULL; 1227 int err = -ENOMEM; 1228 u8 status; 1229 1230 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1231 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1232 if (!in_mad || !out_mad) 1233 goto out; 1234 1235 init_query_mad(in_mad); 1236 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1237 1238 err = mthca_MAD_IFC(dev, 1, 1, 1239 1, NULL, NULL, in_mad, out_mad, 1240 &status); 1241 if (err) 1242 goto out; 1243 if (status) { 1244 err = -EINVAL; 1245 goto out; 1246 } 1247 1248 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1249 1250 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1251 1252 err = mthca_MAD_IFC(dev, 1, 1, 1253 1, NULL, NULL, in_mad, out_mad, 1254 &status); 1255 if (err) 1256 goto out; 1257 if (status) { 1258 err = -EINVAL; 1259 goto out; 1260 } 1261 1262 if (mthca_is_memfree(dev)) 1263 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1264 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1265 1266 out: 1267 kfree(in_mad); 1268 kfree(out_mad); 1269 return err; 1270 } 1271 1272 int mthca_register_device(struct mthca_dev *dev) 1273 { 1274 int ret; 1275 int i; 1276 1277 ret = mthca_init_node_data(dev); 1278 if (ret) 1279 return ret; 1280 1281 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1282 dev->ib_dev.owner = THIS_MODULE; 1283 1284 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1285 dev->ib_dev.uverbs_cmd_mask = 1286 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1287 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1288 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1289 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1290 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1291 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1292 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1293 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1294 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1295 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1296 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1297 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1298 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1299 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1300 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1301 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1302 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1303 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1304 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1305 dev->ib_dev.num_comp_vectors = 1; 1306 dev->ib_dev.dma_device = &dev->pdev->dev; 1307 dev->ib_dev.query_device = mthca_query_device; 1308 dev->ib_dev.query_port = mthca_query_port; 1309 dev->ib_dev.modify_device = mthca_modify_device; 1310 dev->ib_dev.modify_port = mthca_modify_port; 1311 dev->ib_dev.query_pkey = mthca_query_pkey; 1312 dev->ib_dev.query_gid = mthca_query_gid; 1313 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1314 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1315 dev->ib_dev.mmap = mthca_mmap_uar; 1316 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1317 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1318 dev->ib_dev.create_ah = mthca_ah_create; 1319 dev->ib_dev.query_ah = mthca_ah_query; 1320 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1321 1322 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1323 dev->ib_dev.create_srq = mthca_create_srq; 1324 dev->ib_dev.modify_srq = mthca_modify_srq; 1325 dev->ib_dev.query_srq = mthca_query_srq; 1326 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1327 dev->ib_dev.uverbs_cmd_mask |= 1328 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1329 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1330 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1331 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1332 1333 if (mthca_is_memfree(dev)) 1334 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1335 else 1336 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1337 } 1338 1339 dev->ib_dev.create_qp = mthca_create_qp; 1340 dev->ib_dev.modify_qp = mthca_modify_qp; 1341 dev->ib_dev.query_qp = mthca_query_qp; 1342 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1343 dev->ib_dev.create_cq = mthca_create_cq; 1344 dev->ib_dev.resize_cq = mthca_resize_cq; 1345 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1346 dev->ib_dev.poll_cq = mthca_poll_cq; 1347 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1348 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr; 1349 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1350 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1351 1352 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1353 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1354 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1355 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1356 if (mthca_is_memfree(dev)) 1357 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1358 else 1359 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1360 } 1361 1362 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1363 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1364 dev->ib_dev.process_mad = mthca_process_mad; 1365 1366 if (mthca_is_memfree(dev)) { 1367 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1368 dev->ib_dev.post_send = mthca_arbel_post_send; 1369 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1370 } else { 1371 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1372 dev->ib_dev.post_send = mthca_tavor_post_send; 1373 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1374 } 1375 1376 mutex_init(&dev->cap_mask_mutex); 1377 1378 ret = ib_register_device(&dev->ib_dev); 1379 if (ret) 1380 return ret; 1381 1382 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) { 1383 ret = class_device_create_file(&dev->ib_dev.class_dev, 1384 mthca_class_attributes[i]); 1385 if (ret) { 1386 ib_unregister_device(&dev->ib_dev); 1387 return ret; 1388 } 1389 } 1390 1391 mthca_start_catas_poll(dev); 1392 1393 return 0; 1394 } 1395 1396 void mthca_unregister_device(struct mthca_dev *dev) 1397 { 1398 mthca_stop_catas_poll(dev); 1399 ib_unregister_device(&dev->ib_dev); 1400 } 1401