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_user_verbs.h> 41 #include <linux/mm.h> 42 43 #include "mthca_dev.h" 44 #include "mthca_cmd.h" 45 #include "mthca_user.h" 46 #include "mthca_memfree.h" 47 48 static void init_query_mad(struct ib_smp *mad) 49 { 50 mad->base_version = 1; 51 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 52 mad->class_version = 1; 53 mad->method = IB_MGMT_METHOD_GET; 54 } 55 56 static int mthca_query_device(struct ib_device *ibdev, 57 struct ib_device_attr *props) 58 { 59 struct ib_smp *in_mad = NULL; 60 struct ib_smp *out_mad = NULL; 61 int err = -ENOMEM; 62 struct mthca_dev* mdev = to_mdev(ibdev); 63 64 u8 status; 65 66 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 67 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 68 if (!in_mad || !out_mad) 69 goto out; 70 71 memset(props, 0, sizeof *props); 72 73 props->fw_ver = mdev->fw_ver; 74 75 init_query_mad(in_mad); 76 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 77 78 err = mthca_MAD_IFC(mdev, 1, 1, 79 1, NULL, NULL, in_mad, out_mad, 80 &status); 81 if (err) 82 goto out; 83 if (status) { 84 err = -EINVAL; 85 goto out; 86 } 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_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs; 101 props->max_cqe = mdev->limits.max_cqes; 102 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws; 103 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds; 104 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift; 105 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma; 106 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 107 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs; 108 props->max_srq_wr = mdev->limits.max_srq_wqes; 109 props->max_srq_sge = mdev->limits.max_srq_sge; 110 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay; 111 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ? 112 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 113 props->max_pkeys = mdev->limits.pkey_table_len; 114 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms; 115 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM; 116 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 117 props->max_mcast_grp; 118 /* 119 * If Sinai memory key optimization is being used, then only 120 * the 8-bit key portion will change. For other HCAs, the 121 * unused index bits will also be used for FMR remapping. 122 */ 123 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT) 124 props->max_map_per_fmr = 255; 125 else 126 props->max_map_per_fmr = 127 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1; 128 129 err = 0; 130 out: 131 kfree(in_mad); 132 kfree(out_mad); 133 return err; 134 } 135 136 static int mthca_query_port(struct ib_device *ibdev, 137 u8 port, struct ib_port_attr *props) 138 { 139 struct ib_smp *in_mad = NULL; 140 struct ib_smp *out_mad = NULL; 141 int err = -ENOMEM; 142 u8 status; 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 &status); 158 if (err) 159 goto out; 160 if (status) { 161 err = -EINVAL; 162 goto out; 163 } 164 165 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 166 props->lmc = out_mad->data[34] & 0x7; 167 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 168 props->sm_sl = out_mad->data[36] & 0xf; 169 props->state = out_mad->data[32] & 0xf; 170 props->phys_state = out_mad->data[33] >> 4; 171 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 172 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len; 173 props->max_msg_sz = 0x80000000; 174 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len; 175 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 176 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 177 props->active_width = out_mad->data[31] & 0xf; 178 props->active_speed = out_mad->data[35] >> 4; 179 props->max_mtu = out_mad->data[41] & 0xf; 180 props->active_mtu = out_mad->data[36] >> 4; 181 props->subnet_timeout = out_mad->data[51] & 0x1f; 182 props->max_vl_num = out_mad->data[37] >> 4; 183 props->init_type_reply = out_mad->data[41] >> 4; 184 185 out: 186 kfree(in_mad); 187 kfree(out_mad); 188 return err; 189 } 190 191 static int mthca_modify_device(struct ib_device *ibdev, 192 int mask, 193 struct ib_device_modify *props) 194 { 195 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 196 return -EOPNOTSUPP; 197 198 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 199 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 200 return -ERESTARTSYS; 201 memcpy(ibdev->node_desc, props->node_desc, 64); 202 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 203 } 204 205 return 0; 206 } 207 208 static int mthca_modify_port(struct ib_device *ibdev, 209 u8 port, int port_modify_mask, 210 struct ib_port_modify *props) 211 { 212 struct mthca_set_ib_param set_ib; 213 struct ib_port_attr attr; 214 int err; 215 u8 status; 216 217 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 218 return -ERESTARTSYS; 219 220 err = mthca_query_port(ibdev, port, &attr); 221 if (err) 222 goto out; 223 224 set_ib.set_si_guid = 0; 225 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 226 227 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 228 ~props->clr_port_cap_mask; 229 230 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status); 231 if (err) 232 goto out; 233 if (status) { 234 err = -EINVAL; 235 goto out; 236 } 237 238 out: 239 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 240 return err; 241 } 242 243 static int mthca_query_pkey(struct ib_device *ibdev, 244 u8 port, u16 index, u16 *pkey) 245 { 246 struct ib_smp *in_mad = NULL; 247 struct ib_smp *out_mad = NULL; 248 int err = -ENOMEM; 249 u8 status; 250 251 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 252 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 253 if (!in_mad || !out_mad) 254 goto out; 255 256 init_query_mad(in_mad); 257 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 258 in_mad->attr_mod = cpu_to_be32(index / 32); 259 260 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 261 port, NULL, NULL, in_mad, out_mad, 262 &status); 263 if (err) 264 goto out; 265 if (status) { 266 err = -EINVAL; 267 goto out; 268 } 269 270 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 271 272 out: 273 kfree(in_mad); 274 kfree(out_mad); 275 return err; 276 } 277 278 static int mthca_query_gid(struct ib_device *ibdev, u8 port, 279 int index, union ib_gid *gid) 280 { 281 struct ib_smp *in_mad = NULL; 282 struct ib_smp *out_mad = NULL; 283 int err = -ENOMEM; 284 u8 status; 285 286 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 287 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 288 if (!in_mad || !out_mad) 289 goto out; 290 291 init_query_mad(in_mad); 292 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 293 in_mad->attr_mod = cpu_to_be32(port); 294 295 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 296 port, NULL, NULL, in_mad, out_mad, 297 &status); 298 if (err) 299 goto out; 300 if (status) { 301 err = -EINVAL; 302 goto out; 303 } 304 305 memcpy(gid->raw, out_mad->data + 8, 8); 306 307 init_query_mad(in_mad); 308 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 309 in_mad->attr_mod = cpu_to_be32(index / 8); 310 311 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 312 port, NULL, NULL, in_mad, out_mad, 313 &status); 314 if (err) 315 goto out; 316 if (status) { 317 err = -EINVAL; 318 goto out; 319 } 320 321 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 322 323 out: 324 kfree(in_mad); 325 kfree(out_mad); 326 return err; 327 } 328 329 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev, 330 struct ib_udata *udata) 331 { 332 struct mthca_alloc_ucontext_resp uresp; 333 struct mthca_ucontext *context; 334 int err; 335 336 memset(&uresp, 0, sizeof uresp); 337 338 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps; 339 if (mthca_is_memfree(to_mdev(ibdev))) 340 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size; 341 else 342 uresp.uarc_size = 0; 343 344 context = kmalloc(sizeof *context, GFP_KERNEL); 345 if (!context) 346 return ERR_PTR(-ENOMEM); 347 348 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 349 if (err) { 350 kfree(context); 351 return ERR_PTR(err); 352 } 353 354 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 355 if (IS_ERR(context->db_tab)) { 356 err = PTR_ERR(context->db_tab); 357 mthca_uar_free(to_mdev(ibdev), &context->uar); 358 kfree(context); 359 return ERR_PTR(err); 360 } 361 362 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 363 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 364 mthca_uar_free(to_mdev(ibdev), &context->uar); 365 kfree(context); 366 return ERR_PTR(-EFAULT); 367 } 368 369 return &context->ibucontext; 370 } 371 372 static int mthca_dealloc_ucontext(struct ib_ucontext *context) 373 { 374 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 375 to_mucontext(context)->db_tab); 376 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 377 kfree(to_mucontext(context)); 378 379 return 0; 380 } 381 382 static int mthca_mmap_uar(struct ib_ucontext *context, 383 struct vm_area_struct *vma) 384 { 385 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 386 return -EINVAL; 387 388 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 389 390 if (io_remap_pfn_range(vma, vma->vm_start, 391 to_mucontext(context)->uar.pfn, 392 PAGE_SIZE, vma->vm_page_prot)) 393 return -EAGAIN; 394 395 return 0; 396 } 397 398 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev, 399 struct ib_ucontext *context, 400 struct ib_udata *udata) 401 { 402 struct mthca_pd *pd; 403 int err; 404 405 pd = kmalloc(sizeof *pd, GFP_KERNEL); 406 if (!pd) 407 return ERR_PTR(-ENOMEM); 408 409 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd); 410 if (err) { 411 kfree(pd); 412 return ERR_PTR(err); 413 } 414 415 if (context) { 416 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 417 mthca_pd_free(to_mdev(ibdev), pd); 418 kfree(pd); 419 return ERR_PTR(-EFAULT); 420 } 421 } 422 423 return &pd->ibpd; 424 } 425 426 static int mthca_dealloc_pd(struct ib_pd *pd) 427 { 428 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 429 kfree(pd); 430 431 return 0; 432 } 433 434 static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 435 struct ib_ah_attr *ah_attr) 436 { 437 int err; 438 struct mthca_ah *ah; 439 440 ah = kmalloc(sizeof *ah, GFP_ATOMIC); 441 if (!ah) 442 return ERR_PTR(-ENOMEM); 443 444 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 445 if (err) { 446 kfree(ah); 447 return ERR_PTR(err); 448 } 449 450 return &ah->ibah; 451 } 452 453 static int mthca_ah_destroy(struct ib_ah *ah) 454 { 455 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 456 kfree(ah); 457 458 return 0; 459 } 460 461 static struct ib_srq *mthca_create_srq(struct ib_pd *pd, 462 struct ib_srq_init_attr *init_attr, 463 struct ib_udata *udata) 464 { 465 struct mthca_create_srq ucmd; 466 struct mthca_ucontext *context = NULL; 467 struct mthca_srq *srq; 468 int err; 469 470 srq = kmalloc(sizeof *srq, GFP_KERNEL); 471 if (!srq) 472 return ERR_PTR(-ENOMEM); 473 474 if (pd->uobject) { 475 context = to_mucontext(pd->uobject->context); 476 477 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 478 err = -EFAULT; 479 goto err_free; 480 } 481 482 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 483 context->db_tab, ucmd.db_index, 484 ucmd.db_page); 485 486 if (err) 487 goto err_free; 488 489 srq->mr.ibmr.lkey = ucmd.lkey; 490 srq->db_index = ucmd.db_index; 491 } 492 493 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd), 494 &init_attr->attr, srq); 495 496 if (err && pd->uobject) 497 mthca_unmap_user_db(to_mdev(pd->device), &context->uar, 498 context->db_tab, ucmd.db_index); 499 500 if (err) 501 goto err_free; 502 503 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) { 504 mthca_free_srq(to_mdev(pd->device), srq); 505 err = -EFAULT; 506 goto err_free; 507 } 508 509 return &srq->ibsrq; 510 511 err_free: 512 kfree(srq); 513 514 return ERR_PTR(err); 515 } 516 517 static int mthca_destroy_srq(struct ib_srq *srq) 518 { 519 struct mthca_ucontext *context; 520 521 if (srq->uobject) { 522 context = to_mucontext(srq->uobject->context); 523 524 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 525 context->db_tab, to_msrq(srq)->db_index); 526 } 527 528 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 529 kfree(srq); 530 531 return 0; 532 } 533 534 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 535 struct ib_qp_init_attr *init_attr, 536 struct ib_udata *udata) 537 { 538 struct mthca_create_qp ucmd; 539 struct mthca_qp *qp; 540 int err; 541 542 switch (init_attr->qp_type) { 543 case IB_QPT_RC: 544 case IB_QPT_UC: 545 case IB_QPT_UD: 546 { 547 struct mthca_ucontext *context; 548 549 qp = kmalloc(sizeof *qp, GFP_KERNEL); 550 if (!qp) 551 return ERR_PTR(-ENOMEM); 552 553 if (pd->uobject) { 554 context = to_mucontext(pd->uobject->context); 555 556 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 557 kfree(qp); 558 return ERR_PTR(-EFAULT); 559 } 560 561 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 562 context->db_tab, 563 ucmd.sq_db_index, ucmd.sq_db_page); 564 if (err) { 565 kfree(qp); 566 return ERR_PTR(err); 567 } 568 569 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 570 context->db_tab, 571 ucmd.rq_db_index, ucmd.rq_db_page); 572 if (err) { 573 mthca_unmap_user_db(to_mdev(pd->device), 574 &context->uar, 575 context->db_tab, 576 ucmd.sq_db_index); 577 kfree(qp); 578 return ERR_PTR(err); 579 } 580 581 qp->mr.ibmr.lkey = ucmd.lkey; 582 qp->sq.db_index = ucmd.sq_db_index; 583 qp->rq.db_index = ucmd.rq_db_index; 584 } 585 586 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 587 to_mcq(init_attr->send_cq), 588 to_mcq(init_attr->recv_cq), 589 init_attr->qp_type, init_attr->sq_sig_type, 590 &init_attr->cap, qp); 591 592 if (err && pd->uobject) { 593 context = to_mucontext(pd->uobject->context); 594 595 mthca_unmap_user_db(to_mdev(pd->device), 596 &context->uar, 597 context->db_tab, 598 ucmd.sq_db_index); 599 mthca_unmap_user_db(to_mdev(pd->device), 600 &context->uar, 601 context->db_tab, 602 ucmd.rq_db_index); 603 } 604 605 qp->ibqp.qp_num = qp->qpn; 606 break; 607 } 608 case IB_QPT_SMI: 609 case IB_QPT_GSI: 610 { 611 /* Don't allow userspace to create special QPs */ 612 if (pd->uobject) 613 return ERR_PTR(-EINVAL); 614 615 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 616 if (!qp) 617 return ERR_PTR(-ENOMEM); 618 619 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 620 621 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 622 to_mcq(init_attr->send_cq), 623 to_mcq(init_attr->recv_cq), 624 init_attr->sq_sig_type, &init_attr->cap, 625 qp->ibqp.qp_num, init_attr->port_num, 626 to_msqp(qp)); 627 break; 628 } 629 default: 630 /* Don't support raw QPs */ 631 return ERR_PTR(-ENOSYS); 632 } 633 634 if (err) { 635 kfree(qp); 636 return ERR_PTR(err); 637 } 638 639 init_attr->cap.max_send_wr = qp->sq.max; 640 init_attr->cap.max_recv_wr = qp->rq.max; 641 init_attr->cap.max_send_sge = qp->sq.max_gs; 642 init_attr->cap.max_recv_sge = qp->rq.max_gs; 643 init_attr->cap.max_inline_data = qp->max_inline_data; 644 645 return &qp->ibqp; 646 } 647 648 static int mthca_destroy_qp(struct ib_qp *qp) 649 { 650 if (qp->uobject) { 651 mthca_unmap_user_db(to_mdev(qp->device), 652 &to_mucontext(qp->uobject->context)->uar, 653 to_mucontext(qp->uobject->context)->db_tab, 654 to_mqp(qp)->sq.db_index); 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)->rq.db_index); 659 } 660 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 661 kfree(qp); 662 return 0; 663 } 664 665 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries, 666 struct ib_ucontext *context, 667 struct ib_udata *udata) 668 { 669 struct mthca_create_cq ucmd; 670 struct mthca_cq *cq; 671 int nent; 672 int err; 673 674 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 675 return ERR_PTR(-EINVAL); 676 677 if (context) { 678 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 679 return ERR_PTR(-EFAULT); 680 681 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 682 to_mucontext(context)->db_tab, 683 ucmd.set_db_index, ucmd.set_db_page); 684 if (err) 685 return ERR_PTR(err); 686 687 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 688 to_mucontext(context)->db_tab, 689 ucmd.arm_db_index, ucmd.arm_db_page); 690 if (err) 691 goto err_unmap_set; 692 } 693 694 cq = kmalloc(sizeof *cq, GFP_KERNEL); 695 if (!cq) { 696 err = -ENOMEM; 697 goto err_unmap_arm; 698 } 699 700 if (context) { 701 cq->buf.mr.ibmr.lkey = ucmd.lkey; 702 cq->set_ci_db_index = ucmd.set_db_index; 703 cq->arm_db_index = ucmd.arm_db_index; 704 } 705 706 for (nent = 1; nent <= entries; nent <<= 1) 707 ; /* nothing */ 708 709 err = mthca_init_cq(to_mdev(ibdev), nent, 710 context ? to_mucontext(context) : NULL, 711 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 712 cq); 713 if (err) 714 goto err_free; 715 716 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) { 717 mthca_free_cq(to_mdev(ibdev), cq); 718 goto err_free; 719 } 720 721 cq->resize_buf = NULL; 722 723 return &cq->ibcq; 724 725 err_free: 726 kfree(cq); 727 728 err_unmap_arm: 729 if (context) 730 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 731 to_mucontext(context)->db_tab, ucmd.arm_db_index); 732 733 err_unmap_set: 734 if (context) 735 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 736 to_mucontext(context)->db_tab, ucmd.set_db_index); 737 738 return ERR_PTR(err); 739 } 740 741 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 742 int entries) 743 { 744 int ret; 745 746 spin_lock_irq(&cq->lock); 747 if (cq->resize_buf) { 748 ret = -EBUSY; 749 goto unlock; 750 } 751 752 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 753 if (!cq->resize_buf) { 754 ret = -ENOMEM; 755 goto unlock; 756 } 757 758 cq->resize_buf->state = CQ_RESIZE_ALLOC; 759 760 ret = 0; 761 762 unlock: 763 spin_unlock_irq(&cq->lock); 764 765 if (ret) 766 return ret; 767 768 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 769 if (ret) { 770 spin_lock_irq(&cq->lock); 771 kfree(cq->resize_buf); 772 cq->resize_buf = NULL; 773 spin_unlock_irq(&cq->lock); 774 return ret; 775 } 776 777 cq->resize_buf->cqe = entries - 1; 778 779 spin_lock_irq(&cq->lock); 780 cq->resize_buf->state = CQ_RESIZE_READY; 781 spin_unlock_irq(&cq->lock); 782 783 return 0; 784 } 785 786 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 787 { 788 struct mthca_dev *dev = to_mdev(ibcq->device); 789 struct mthca_cq *cq = to_mcq(ibcq); 790 struct mthca_resize_cq ucmd; 791 u32 lkey; 792 u8 status; 793 int ret; 794 795 if (entries < 1 || entries > dev->limits.max_cqes) 796 return -EINVAL; 797 798 mutex_lock(&cq->mutex); 799 800 entries = roundup_pow_of_two(entries + 1); 801 if (entries == ibcq->cqe + 1) { 802 ret = 0; 803 goto out; 804 } 805 806 if (cq->is_kernel) { 807 ret = mthca_alloc_resize_buf(dev, cq, entries); 808 if (ret) 809 goto out; 810 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 811 } else { 812 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 813 ret = -EFAULT; 814 goto out; 815 } 816 lkey = ucmd.lkey; 817 } 818 819 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status); 820 if (status) 821 ret = -EINVAL; 822 823 if (ret) { 824 if (cq->resize_buf) { 825 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 826 cq->resize_buf->cqe); 827 kfree(cq->resize_buf); 828 spin_lock_irq(&cq->lock); 829 cq->resize_buf = NULL; 830 spin_unlock_irq(&cq->lock); 831 } 832 goto out; 833 } 834 835 if (cq->is_kernel) { 836 struct mthca_cq_buf tbuf; 837 int tcqe; 838 839 spin_lock_irq(&cq->lock); 840 if (cq->resize_buf->state == CQ_RESIZE_READY) { 841 mthca_cq_resize_copy_cqes(cq); 842 tbuf = cq->buf; 843 tcqe = cq->ibcq.cqe; 844 cq->buf = cq->resize_buf->buf; 845 cq->ibcq.cqe = cq->resize_buf->cqe; 846 } else { 847 tbuf = cq->resize_buf->buf; 848 tcqe = cq->resize_buf->cqe; 849 } 850 851 kfree(cq->resize_buf); 852 cq->resize_buf = NULL; 853 spin_unlock_irq(&cq->lock); 854 855 mthca_free_cq_buf(dev, &tbuf, tcqe); 856 } else 857 ibcq->cqe = entries - 1; 858 859 out: 860 mutex_unlock(&cq->mutex); 861 862 return ret; 863 } 864 865 static int mthca_destroy_cq(struct ib_cq *cq) 866 { 867 if (cq->uobject) { 868 mthca_unmap_user_db(to_mdev(cq->device), 869 &to_mucontext(cq->uobject->context)->uar, 870 to_mucontext(cq->uobject->context)->db_tab, 871 to_mcq(cq)->arm_db_index); 872 mthca_unmap_user_db(to_mdev(cq->device), 873 &to_mucontext(cq->uobject->context)->uar, 874 to_mucontext(cq->uobject->context)->db_tab, 875 to_mcq(cq)->set_ci_db_index); 876 } 877 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 878 kfree(cq); 879 880 return 0; 881 } 882 883 static inline u32 convert_access(int acc) 884 { 885 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 886 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 887 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 888 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 889 MTHCA_MPT_FLAG_LOCAL_READ; 890 } 891 892 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 893 { 894 struct mthca_mr *mr; 895 int err; 896 897 mr = kmalloc(sizeof *mr, GFP_KERNEL); 898 if (!mr) 899 return ERR_PTR(-ENOMEM); 900 901 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 902 to_mpd(pd)->pd_num, 903 convert_access(acc), mr); 904 905 if (err) { 906 kfree(mr); 907 return ERR_PTR(err); 908 } 909 910 return &mr->ibmr; 911 } 912 913 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd, 914 struct ib_phys_buf *buffer_list, 915 int num_phys_buf, 916 int acc, 917 u64 *iova_start) 918 { 919 struct mthca_mr *mr; 920 u64 *page_list; 921 u64 total_size; 922 u64 mask; 923 int shift; 924 int npages; 925 int err; 926 int i, j, n; 927 928 /* First check that we have enough alignment */ 929 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) 930 return ERR_PTR(-EINVAL); 931 932 mask = 0; 933 total_size = 0; 934 for (i = 0; i < num_phys_buf; ++i) { 935 if (i != 0) 936 mask |= buffer_list[i].addr; 937 if (i != num_phys_buf - 1) 938 mask |= buffer_list[i].addr + buffer_list[i].size; 939 940 total_size += buffer_list[i].size; 941 } 942 943 if (mask & ~PAGE_MASK) 944 return ERR_PTR(-EINVAL); 945 946 /* Find largest page shift we can use to cover buffers */ 947 for (shift = PAGE_SHIFT; shift < 31; ++shift) 948 if (num_phys_buf > 1) { 949 if ((1ULL << shift) & mask) 950 break; 951 } else { 952 if (1ULL << shift >= 953 buffer_list[0].size + 954 (buffer_list[0].addr & ((1ULL << shift) - 1))) 955 break; 956 } 957 958 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1); 959 buffer_list[0].addr &= ~0ull << shift; 960 961 mr = kmalloc(sizeof *mr, GFP_KERNEL); 962 if (!mr) 963 return ERR_PTR(-ENOMEM); 964 965 npages = 0; 966 for (i = 0; i < num_phys_buf; ++i) 967 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 968 969 if (!npages) 970 return &mr->ibmr; 971 972 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL); 973 if (!page_list) { 974 kfree(mr); 975 return ERR_PTR(-ENOMEM); 976 } 977 978 n = 0; 979 for (i = 0; i < num_phys_buf; ++i) 980 for (j = 0; 981 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 982 ++j) 983 page_list[n++] = buffer_list[i].addr + ((u64) j << shift); 984 985 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) " 986 "in PD %x; shift %d, npages %d.\n", 987 (unsigned long long) buffer_list[0].addr, 988 (unsigned long long) *iova_start, 989 to_mpd(pd)->pd_num, 990 shift, npages); 991 992 err = mthca_mr_alloc_phys(to_mdev(pd->device), 993 to_mpd(pd)->pd_num, 994 page_list, shift, npages, 995 *iova_start, total_size, 996 convert_access(acc), mr); 997 998 if (err) { 999 kfree(page_list); 1000 kfree(mr); 1001 return ERR_PTR(err); 1002 } 1003 1004 kfree(page_list); 1005 return &mr->ibmr; 1006 } 1007 1008 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region, 1009 int acc, struct ib_udata *udata) 1010 { 1011 struct mthca_dev *dev = to_mdev(pd->device); 1012 struct ib_umem_chunk *chunk; 1013 struct mthca_mr *mr; 1014 u64 *pages; 1015 int shift, n, len; 1016 int i, j, k; 1017 int err = 0; 1018 int write_mtt_size; 1019 1020 shift = ffs(region->page_size) - 1; 1021 1022 mr = kmalloc(sizeof *mr, GFP_KERNEL); 1023 if (!mr) 1024 return ERR_PTR(-ENOMEM); 1025 1026 n = 0; 1027 list_for_each_entry(chunk, ®ion->chunk_list, list) 1028 n += chunk->nents; 1029 1030 mr->mtt = mthca_alloc_mtt(dev, n); 1031 if (IS_ERR(mr->mtt)) { 1032 err = PTR_ERR(mr->mtt); 1033 goto err; 1034 } 1035 1036 pages = (u64 *) __get_free_page(GFP_KERNEL); 1037 if (!pages) { 1038 err = -ENOMEM; 1039 goto err_mtt; 1040 } 1041 1042 i = n = 0; 1043 1044 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 1045 1046 list_for_each_entry(chunk, ®ion->chunk_list, list) 1047 for (j = 0; j < chunk->nmap; ++j) { 1048 len = sg_dma_len(&chunk->page_list[j]) >> shift; 1049 for (k = 0; k < len; ++k) { 1050 pages[i++] = sg_dma_address(&chunk->page_list[j]) + 1051 region->page_size * k; 1052 /* 1053 * Be friendly to write_mtt and pass it chunks 1054 * of appropriate size. 1055 */ 1056 if (i == write_mtt_size) { 1057 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 1058 if (err) 1059 goto mtt_done; 1060 n += i; 1061 i = 0; 1062 } 1063 } 1064 } 1065 1066 if (i) 1067 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 1068 mtt_done: 1069 free_page((unsigned long) pages); 1070 if (err) 1071 goto err_mtt; 1072 1073 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base, 1074 region->length, convert_access(acc), mr); 1075 1076 if (err) 1077 goto err_mtt; 1078 1079 return &mr->ibmr; 1080 1081 err_mtt: 1082 mthca_free_mtt(dev, mr->mtt); 1083 1084 err: 1085 kfree(mr); 1086 return ERR_PTR(err); 1087 } 1088 1089 static int mthca_dereg_mr(struct ib_mr *mr) 1090 { 1091 struct mthca_mr *mmr = to_mmr(mr); 1092 mthca_free_mr(to_mdev(mr->device), mmr); 1093 kfree(mmr); 1094 return 0; 1095 } 1096 1097 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 1098 struct ib_fmr_attr *fmr_attr) 1099 { 1100 struct mthca_fmr *fmr; 1101 int err; 1102 1103 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 1104 if (!fmr) 1105 return ERR_PTR(-ENOMEM); 1106 1107 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 1108 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 1109 convert_access(mr_access_flags), fmr); 1110 1111 if (err) { 1112 kfree(fmr); 1113 return ERR_PTR(err); 1114 } 1115 1116 return &fmr->ibmr; 1117 } 1118 1119 static int mthca_dealloc_fmr(struct ib_fmr *fmr) 1120 { 1121 struct mthca_fmr *mfmr = to_mfmr(fmr); 1122 int err; 1123 1124 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 1125 if (err) 1126 return err; 1127 1128 kfree(mfmr); 1129 return 0; 1130 } 1131 1132 static int mthca_unmap_fmr(struct list_head *fmr_list) 1133 { 1134 struct ib_fmr *fmr; 1135 int err; 1136 u8 status; 1137 struct mthca_dev *mdev = NULL; 1138 1139 list_for_each_entry(fmr, fmr_list, list) { 1140 if (mdev && to_mdev(fmr->device) != mdev) 1141 return -EINVAL; 1142 mdev = to_mdev(fmr->device); 1143 } 1144 1145 if (!mdev) 1146 return 0; 1147 1148 if (mthca_is_memfree(mdev)) { 1149 list_for_each_entry(fmr, fmr_list, list) 1150 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1151 1152 wmb(); 1153 } else 1154 list_for_each_entry(fmr, fmr_list, list) 1155 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1156 1157 err = mthca_SYNC_TPT(mdev, &status); 1158 if (err) 1159 return err; 1160 if (status) 1161 return -EINVAL; 1162 return 0; 1163 } 1164 1165 static ssize_t show_rev(struct class_device *cdev, char *buf) 1166 { 1167 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1168 return sprintf(buf, "%x\n", dev->rev_id); 1169 } 1170 1171 static ssize_t show_fw_ver(struct class_device *cdev, char *buf) 1172 { 1173 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1174 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32), 1175 (int) (dev->fw_ver >> 16) & 0xffff, 1176 (int) dev->fw_ver & 0xffff); 1177 } 1178 1179 static ssize_t show_hca(struct class_device *cdev, char *buf) 1180 { 1181 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1182 switch (dev->pdev->device) { 1183 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1184 return sprintf(buf, "MT23108\n"); 1185 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1186 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1187 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1188 return sprintf(buf, "MT25208\n"); 1189 case PCI_DEVICE_ID_MELLANOX_SINAI: 1190 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1191 return sprintf(buf, "MT25204\n"); 1192 default: 1193 return sprintf(buf, "unknown\n"); 1194 } 1195 } 1196 1197 static ssize_t show_board(struct class_device *cdev, char *buf) 1198 { 1199 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev); 1200 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1201 } 1202 1203 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1204 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1205 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1206 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1207 1208 static struct class_device_attribute *mthca_class_attributes[] = { 1209 &class_device_attr_hw_rev, 1210 &class_device_attr_fw_ver, 1211 &class_device_attr_hca_type, 1212 &class_device_attr_board_id 1213 }; 1214 1215 static int mthca_init_node_data(struct mthca_dev *dev) 1216 { 1217 struct ib_smp *in_mad = NULL; 1218 struct ib_smp *out_mad = NULL; 1219 int err = -ENOMEM; 1220 u8 status; 1221 1222 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1223 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1224 if (!in_mad || !out_mad) 1225 goto out; 1226 1227 init_query_mad(in_mad); 1228 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1229 1230 err = mthca_MAD_IFC(dev, 1, 1, 1231 1, NULL, NULL, in_mad, out_mad, 1232 &status); 1233 if (err) 1234 goto out; 1235 if (status) { 1236 err = -EINVAL; 1237 goto out; 1238 } 1239 1240 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1241 1242 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1243 1244 err = mthca_MAD_IFC(dev, 1, 1, 1245 1, NULL, NULL, in_mad, out_mad, 1246 &status); 1247 if (err) 1248 goto out; 1249 if (status) { 1250 err = -EINVAL; 1251 goto out; 1252 } 1253 1254 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1255 1256 out: 1257 kfree(in_mad); 1258 kfree(out_mad); 1259 return err; 1260 } 1261 1262 int mthca_register_device(struct mthca_dev *dev) 1263 { 1264 int ret; 1265 int i; 1266 1267 ret = mthca_init_node_data(dev); 1268 if (ret) 1269 return ret; 1270 1271 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1272 dev->ib_dev.owner = THIS_MODULE; 1273 1274 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1275 dev->ib_dev.uverbs_cmd_mask = 1276 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1277 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1278 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1279 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1280 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1281 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1282 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1283 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1284 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1285 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1286 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1287 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1288 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1289 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1290 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1291 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1292 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1293 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1294 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1295 dev->ib_dev.dma_device = &dev->pdev->dev; 1296 dev->ib_dev.class_dev.dev = &dev->pdev->dev; 1297 dev->ib_dev.query_device = mthca_query_device; 1298 dev->ib_dev.query_port = mthca_query_port; 1299 dev->ib_dev.modify_device = mthca_modify_device; 1300 dev->ib_dev.modify_port = mthca_modify_port; 1301 dev->ib_dev.query_pkey = mthca_query_pkey; 1302 dev->ib_dev.query_gid = mthca_query_gid; 1303 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1304 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1305 dev->ib_dev.mmap = mthca_mmap_uar; 1306 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1307 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1308 dev->ib_dev.create_ah = mthca_ah_create; 1309 dev->ib_dev.query_ah = mthca_ah_query; 1310 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1311 1312 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1313 dev->ib_dev.create_srq = mthca_create_srq; 1314 dev->ib_dev.modify_srq = mthca_modify_srq; 1315 dev->ib_dev.query_srq = mthca_query_srq; 1316 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1317 dev->ib_dev.uverbs_cmd_mask |= 1318 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1319 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1320 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1321 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1322 1323 if (mthca_is_memfree(dev)) 1324 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1325 else 1326 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1327 } 1328 1329 dev->ib_dev.create_qp = mthca_create_qp; 1330 dev->ib_dev.modify_qp = mthca_modify_qp; 1331 dev->ib_dev.query_qp = mthca_query_qp; 1332 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1333 dev->ib_dev.create_cq = mthca_create_cq; 1334 dev->ib_dev.resize_cq = mthca_resize_cq; 1335 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1336 dev->ib_dev.poll_cq = mthca_poll_cq; 1337 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1338 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr; 1339 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1340 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1341 1342 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1343 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1344 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1345 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1346 if (mthca_is_memfree(dev)) 1347 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1348 else 1349 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1350 } 1351 1352 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1353 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1354 dev->ib_dev.process_mad = mthca_process_mad; 1355 1356 if (mthca_is_memfree(dev)) { 1357 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1358 dev->ib_dev.post_send = mthca_arbel_post_send; 1359 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1360 } else { 1361 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1362 dev->ib_dev.post_send = mthca_tavor_post_send; 1363 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1364 } 1365 1366 mutex_init(&dev->cap_mask_mutex); 1367 1368 ret = ib_register_device(&dev->ib_dev); 1369 if (ret) 1370 return ret; 1371 1372 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) { 1373 ret = class_device_create_file(&dev->ib_dev.class_dev, 1374 mthca_class_attributes[i]); 1375 if (ret) { 1376 ib_unregister_device(&dev->ib_dev); 1377 return ret; 1378 } 1379 } 1380 1381 mthca_start_catas_poll(dev); 1382 1383 return 0; 1384 } 1385 1386 void mthca_unregister_device(struct mthca_dev *dev) 1387 { 1388 mthca_stop_catas_poll(dev); 1389 ib_unregister_device(&dev->ib_dev); 1390 } 1391