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 <rdma/mthca-abi.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 /* props being zeroed by the caller, avoid zeroing it here */ 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, 197 IB_DEVICE_NODE_DESC_MAX); 198 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 199 } 200 201 return 0; 202 } 203 204 static int mthca_modify_port(struct ib_device *ibdev, 205 u8 port, int port_modify_mask, 206 struct ib_port_modify *props) 207 { 208 struct mthca_set_ib_param set_ib; 209 struct ib_port_attr attr; 210 int err; 211 212 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 213 return -ERESTARTSYS; 214 215 err = ib_query_port(ibdev, port, &attr); 216 if (err) 217 goto out; 218 219 set_ib.set_si_guid = 0; 220 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 221 222 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 223 ~props->clr_port_cap_mask; 224 225 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port); 226 if (err) 227 goto out; 228 out: 229 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 230 return err; 231 } 232 233 static int mthca_query_pkey(struct ib_device *ibdev, 234 u8 port, u16 index, u16 *pkey) 235 { 236 struct ib_smp *in_mad = NULL; 237 struct ib_smp *out_mad = NULL; 238 int err = -ENOMEM; 239 240 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 241 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 242 if (!in_mad || !out_mad) 243 goto out; 244 245 init_query_mad(in_mad); 246 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 247 in_mad->attr_mod = cpu_to_be32(index / 32); 248 249 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 250 port, NULL, NULL, in_mad, out_mad); 251 if (err) 252 goto out; 253 254 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 255 256 out: 257 kfree(in_mad); 258 kfree(out_mad); 259 return err; 260 } 261 262 static int mthca_query_gid(struct ib_device *ibdev, u8 port, 263 int index, union ib_gid *gid) 264 { 265 struct ib_smp *in_mad = NULL; 266 struct ib_smp *out_mad = NULL; 267 int err = -ENOMEM; 268 269 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 270 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 271 if (!in_mad || !out_mad) 272 goto out; 273 274 init_query_mad(in_mad); 275 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 276 in_mad->attr_mod = cpu_to_be32(port); 277 278 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 279 port, NULL, NULL, in_mad, out_mad); 280 if (err) 281 goto out; 282 283 memcpy(gid->raw, out_mad->data + 8, 8); 284 285 init_query_mad(in_mad); 286 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 287 in_mad->attr_mod = cpu_to_be32(index / 8); 288 289 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 290 port, NULL, NULL, in_mad, out_mad); 291 if (err) 292 goto out; 293 294 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 295 296 out: 297 kfree(in_mad); 298 kfree(out_mad); 299 return err; 300 } 301 302 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev, 303 struct ib_udata *udata) 304 { 305 struct mthca_alloc_ucontext_resp uresp; 306 struct mthca_ucontext *context; 307 int err; 308 309 if (!(to_mdev(ibdev)->active)) 310 return ERR_PTR(-EAGAIN); 311 312 memset(&uresp, 0, sizeof uresp); 313 314 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps; 315 if (mthca_is_memfree(to_mdev(ibdev))) 316 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size; 317 else 318 uresp.uarc_size = 0; 319 320 context = kmalloc(sizeof *context, GFP_KERNEL); 321 if (!context) 322 return ERR_PTR(-ENOMEM); 323 324 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 325 if (err) { 326 kfree(context); 327 return ERR_PTR(err); 328 } 329 330 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 331 if (IS_ERR(context->db_tab)) { 332 err = PTR_ERR(context->db_tab); 333 mthca_uar_free(to_mdev(ibdev), &context->uar); 334 kfree(context); 335 return ERR_PTR(err); 336 } 337 338 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 339 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 340 mthca_uar_free(to_mdev(ibdev), &context->uar); 341 kfree(context); 342 return ERR_PTR(-EFAULT); 343 } 344 345 context->reg_mr_warned = 0; 346 347 return &context->ibucontext; 348 } 349 350 static int mthca_dealloc_ucontext(struct ib_ucontext *context) 351 { 352 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 353 to_mucontext(context)->db_tab); 354 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 355 kfree(to_mucontext(context)); 356 357 return 0; 358 } 359 360 static int mthca_mmap_uar(struct ib_ucontext *context, 361 struct vm_area_struct *vma) 362 { 363 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 364 return -EINVAL; 365 366 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 367 368 if (io_remap_pfn_range(vma, vma->vm_start, 369 to_mucontext(context)->uar.pfn, 370 PAGE_SIZE, vma->vm_page_prot)) 371 return -EAGAIN; 372 373 return 0; 374 } 375 376 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev, 377 struct ib_ucontext *context, 378 struct ib_udata *udata) 379 { 380 struct mthca_pd *pd; 381 int err; 382 383 pd = kmalloc(sizeof *pd, GFP_KERNEL); 384 if (!pd) 385 return ERR_PTR(-ENOMEM); 386 387 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd); 388 if (err) { 389 kfree(pd); 390 return ERR_PTR(err); 391 } 392 393 if (context) { 394 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 395 mthca_pd_free(to_mdev(ibdev), pd); 396 kfree(pd); 397 return ERR_PTR(-EFAULT); 398 } 399 } 400 401 return &pd->ibpd; 402 } 403 404 static int mthca_dealloc_pd(struct ib_pd *pd) 405 { 406 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 407 kfree(pd); 408 409 return 0; 410 } 411 412 static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 413 struct rdma_ah_attr *ah_attr, 414 struct ib_udata *udata) 415 416 { 417 int err; 418 struct mthca_ah *ah; 419 420 ah = kmalloc(sizeof *ah, GFP_ATOMIC); 421 if (!ah) 422 return ERR_PTR(-ENOMEM); 423 424 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 425 if (err) { 426 kfree(ah); 427 return ERR_PTR(err); 428 } 429 430 return &ah->ibah; 431 } 432 433 static int mthca_ah_destroy(struct ib_ah *ah) 434 { 435 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 436 kfree(ah); 437 438 return 0; 439 } 440 441 static struct ib_srq *mthca_create_srq(struct ib_pd *pd, 442 struct ib_srq_init_attr *init_attr, 443 struct ib_udata *udata) 444 { 445 struct mthca_create_srq ucmd; 446 struct mthca_ucontext *context = NULL; 447 struct mthca_srq *srq; 448 int err; 449 450 if (init_attr->srq_type != IB_SRQT_BASIC) 451 return ERR_PTR(-ENOSYS); 452 453 srq = kmalloc(sizeof *srq, GFP_KERNEL); 454 if (!srq) 455 return ERR_PTR(-ENOMEM); 456 457 if (pd->uobject) { 458 context = to_mucontext(pd->uobject->context); 459 460 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 461 err = -EFAULT; 462 goto err_free; 463 } 464 465 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 466 context->db_tab, ucmd.db_index, 467 ucmd.db_page); 468 469 if (err) 470 goto err_free; 471 472 srq->mr.ibmr.lkey = ucmd.lkey; 473 srq->db_index = ucmd.db_index; 474 } 475 476 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd), 477 &init_attr->attr, srq); 478 479 if (err && pd->uobject) 480 mthca_unmap_user_db(to_mdev(pd->device), &context->uar, 481 context->db_tab, ucmd.db_index); 482 483 if (err) 484 goto err_free; 485 486 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) { 487 mthca_free_srq(to_mdev(pd->device), srq); 488 err = -EFAULT; 489 goto err_free; 490 } 491 492 return &srq->ibsrq; 493 494 err_free: 495 kfree(srq); 496 497 return ERR_PTR(err); 498 } 499 500 static int mthca_destroy_srq(struct ib_srq *srq) 501 { 502 struct mthca_ucontext *context; 503 504 if (srq->uobject) { 505 context = to_mucontext(srq->uobject->context); 506 507 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 508 context->db_tab, to_msrq(srq)->db_index); 509 } 510 511 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 512 kfree(srq); 513 514 return 0; 515 } 516 517 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 518 struct ib_qp_init_attr *init_attr, 519 struct ib_udata *udata) 520 { 521 struct mthca_create_qp ucmd; 522 struct mthca_qp *qp; 523 int err; 524 525 if (init_attr->create_flags) 526 return ERR_PTR(-EINVAL); 527 528 switch (init_attr->qp_type) { 529 case IB_QPT_RC: 530 case IB_QPT_UC: 531 case IB_QPT_UD: 532 { 533 struct mthca_ucontext *context; 534 535 qp = kmalloc(sizeof *qp, GFP_KERNEL); 536 if (!qp) 537 return ERR_PTR(-ENOMEM); 538 539 if (pd->uobject) { 540 context = to_mucontext(pd->uobject->context); 541 542 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 543 kfree(qp); 544 return ERR_PTR(-EFAULT); 545 } 546 547 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 548 context->db_tab, 549 ucmd.sq_db_index, ucmd.sq_db_page); 550 if (err) { 551 kfree(qp); 552 return ERR_PTR(err); 553 } 554 555 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 556 context->db_tab, 557 ucmd.rq_db_index, ucmd.rq_db_page); 558 if (err) { 559 mthca_unmap_user_db(to_mdev(pd->device), 560 &context->uar, 561 context->db_tab, 562 ucmd.sq_db_index); 563 kfree(qp); 564 return ERR_PTR(err); 565 } 566 567 qp->mr.ibmr.lkey = ucmd.lkey; 568 qp->sq.db_index = ucmd.sq_db_index; 569 qp->rq.db_index = ucmd.rq_db_index; 570 } 571 572 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 573 to_mcq(init_attr->send_cq), 574 to_mcq(init_attr->recv_cq), 575 init_attr->qp_type, init_attr->sq_sig_type, 576 &init_attr->cap, qp); 577 578 if (err && pd->uobject) { 579 context = to_mucontext(pd->uobject->context); 580 581 mthca_unmap_user_db(to_mdev(pd->device), 582 &context->uar, 583 context->db_tab, 584 ucmd.sq_db_index); 585 mthca_unmap_user_db(to_mdev(pd->device), 586 &context->uar, 587 context->db_tab, 588 ucmd.rq_db_index); 589 } 590 591 qp->ibqp.qp_num = qp->qpn; 592 break; 593 } 594 case IB_QPT_SMI: 595 case IB_QPT_GSI: 596 { 597 /* Don't allow userspace to create special QPs */ 598 if (pd->uobject) 599 return ERR_PTR(-EINVAL); 600 601 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 602 if (!qp) 603 return ERR_PTR(-ENOMEM); 604 605 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 606 607 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 608 to_mcq(init_attr->send_cq), 609 to_mcq(init_attr->recv_cq), 610 init_attr->sq_sig_type, &init_attr->cap, 611 qp->ibqp.qp_num, init_attr->port_num, 612 to_msqp(qp)); 613 break; 614 } 615 default: 616 /* Don't support raw QPs */ 617 return ERR_PTR(-ENOSYS); 618 } 619 620 if (err) { 621 kfree(qp); 622 return ERR_PTR(err); 623 } 624 625 init_attr->cap.max_send_wr = qp->sq.max; 626 init_attr->cap.max_recv_wr = qp->rq.max; 627 init_attr->cap.max_send_sge = qp->sq.max_gs; 628 init_attr->cap.max_recv_sge = qp->rq.max_gs; 629 init_attr->cap.max_inline_data = qp->max_inline_data; 630 631 return &qp->ibqp; 632 } 633 634 static int mthca_destroy_qp(struct ib_qp *qp) 635 { 636 if (qp->uobject) { 637 mthca_unmap_user_db(to_mdev(qp->device), 638 &to_mucontext(qp->uobject->context)->uar, 639 to_mucontext(qp->uobject->context)->db_tab, 640 to_mqp(qp)->sq.db_index); 641 mthca_unmap_user_db(to_mdev(qp->device), 642 &to_mucontext(qp->uobject->context)->uar, 643 to_mucontext(qp->uobject->context)->db_tab, 644 to_mqp(qp)->rq.db_index); 645 } 646 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 647 kfree(qp); 648 return 0; 649 } 650 651 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, 652 const struct ib_cq_init_attr *attr, 653 struct ib_ucontext *context, 654 struct ib_udata *udata) 655 { 656 int entries = attr->cqe; 657 struct mthca_create_cq ucmd; 658 struct mthca_cq *cq; 659 int nent; 660 int err; 661 662 if (attr->flags) 663 return ERR_PTR(-EINVAL); 664 665 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 666 return ERR_PTR(-EINVAL); 667 668 if (context) { 669 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 670 return ERR_PTR(-EFAULT); 671 672 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 673 to_mucontext(context)->db_tab, 674 ucmd.set_db_index, ucmd.set_db_page); 675 if (err) 676 return ERR_PTR(err); 677 678 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 679 to_mucontext(context)->db_tab, 680 ucmd.arm_db_index, ucmd.arm_db_page); 681 if (err) 682 goto err_unmap_set; 683 } 684 685 cq = kmalloc(sizeof *cq, GFP_KERNEL); 686 if (!cq) { 687 err = -ENOMEM; 688 goto err_unmap_arm; 689 } 690 691 if (context) { 692 cq->buf.mr.ibmr.lkey = ucmd.lkey; 693 cq->set_ci_db_index = ucmd.set_db_index; 694 cq->arm_db_index = ucmd.arm_db_index; 695 } 696 697 for (nent = 1; nent <= entries; nent <<= 1) 698 ; /* nothing */ 699 700 err = mthca_init_cq(to_mdev(ibdev), nent, 701 context ? to_mucontext(context) : NULL, 702 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 703 cq); 704 if (err) 705 goto err_free; 706 707 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) { 708 mthca_free_cq(to_mdev(ibdev), cq); 709 err = -EFAULT; 710 goto err_free; 711 } 712 713 cq->resize_buf = NULL; 714 715 return &cq->ibcq; 716 717 err_free: 718 kfree(cq); 719 720 err_unmap_arm: 721 if (context) 722 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 723 to_mucontext(context)->db_tab, ucmd.arm_db_index); 724 725 err_unmap_set: 726 if (context) 727 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 728 to_mucontext(context)->db_tab, ucmd.set_db_index); 729 730 return ERR_PTR(err); 731 } 732 733 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 734 int entries) 735 { 736 int ret; 737 738 spin_lock_irq(&cq->lock); 739 if (cq->resize_buf) { 740 ret = -EBUSY; 741 goto unlock; 742 } 743 744 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 745 if (!cq->resize_buf) { 746 ret = -ENOMEM; 747 goto unlock; 748 } 749 750 cq->resize_buf->state = CQ_RESIZE_ALLOC; 751 752 ret = 0; 753 754 unlock: 755 spin_unlock_irq(&cq->lock); 756 757 if (ret) 758 return ret; 759 760 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 761 if (ret) { 762 spin_lock_irq(&cq->lock); 763 kfree(cq->resize_buf); 764 cq->resize_buf = NULL; 765 spin_unlock_irq(&cq->lock); 766 return ret; 767 } 768 769 cq->resize_buf->cqe = entries - 1; 770 771 spin_lock_irq(&cq->lock); 772 cq->resize_buf->state = CQ_RESIZE_READY; 773 spin_unlock_irq(&cq->lock); 774 775 return 0; 776 } 777 778 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 779 { 780 struct mthca_dev *dev = to_mdev(ibcq->device); 781 struct mthca_cq *cq = to_mcq(ibcq); 782 struct mthca_resize_cq ucmd; 783 u32 lkey; 784 int ret; 785 786 if (entries < 1 || entries > dev->limits.max_cqes) 787 return -EINVAL; 788 789 mutex_lock(&cq->mutex); 790 791 entries = roundup_pow_of_two(entries + 1); 792 if (entries == ibcq->cqe + 1) { 793 ret = 0; 794 goto out; 795 } 796 797 if (cq->is_kernel) { 798 ret = mthca_alloc_resize_buf(dev, cq, entries); 799 if (ret) 800 goto out; 801 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 802 } else { 803 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 804 ret = -EFAULT; 805 goto out; 806 } 807 lkey = ucmd.lkey; 808 } 809 810 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries)); 811 812 if (ret) { 813 if (cq->resize_buf) { 814 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 815 cq->resize_buf->cqe); 816 kfree(cq->resize_buf); 817 spin_lock_irq(&cq->lock); 818 cq->resize_buf = NULL; 819 spin_unlock_irq(&cq->lock); 820 } 821 goto out; 822 } 823 824 if (cq->is_kernel) { 825 struct mthca_cq_buf tbuf; 826 int tcqe; 827 828 spin_lock_irq(&cq->lock); 829 if (cq->resize_buf->state == CQ_RESIZE_READY) { 830 mthca_cq_resize_copy_cqes(cq); 831 tbuf = cq->buf; 832 tcqe = cq->ibcq.cqe; 833 cq->buf = cq->resize_buf->buf; 834 cq->ibcq.cqe = cq->resize_buf->cqe; 835 } else { 836 tbuf = cq->resize_buf->buf; 837 tcqe = cq->resize_buf->cqe; 838 } 839 840 kfree(cq->resize_buf); 841 cq->resize_buf = NULL; 842 spin_unlock_irq(&cq->lock); 843 844 mthca_free_cq_buf(dev, &tbuf, tcqe); 845 } else 846 ibcq->cqe = entries - 1; 847 848 out: 849 mutex_unlock(&cq->mutex); 850 851 return ret; 852 } 853 854 static int mthca_destroy_cq(struct ib_cq *cq) 855 { 856 if (cq->uobject) { 857 mthca_unmap_user_db(to_mdev(cq->device), 858 &to_mucontext(cq->uobject->context)->uar, 859 to_mucontext(cq->uobject->context)->db_tab, 860 to_mcq(cq)->arm_db_index); 861 mthca_unmap_user_db(to_mdev(cq->device), 862 &to_mucontext(cq->uobject->context)->uar, 863 to_mucontext(cq->uobject->context)->db_tab, 864 to_mcq(cq)->set_ci_db_index); 865 } 866 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 867 kfree(cq); 868 869 return 0; 870 } 871 872 static inline u32 convert_access(int acc) 873 { 874 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 875 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 876 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 877 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 878 MTHCA_MPT_FLAG_LOCAL_READ; 879 } 880 881 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 882 { 883 struct mthca_mr *mr; 884 int err; 885 886 mr = kmalloc(sizeof *mr, GFP_KERNEL); 887 if (!mr) 888 return ERR_PTR(-ENOMEM); 889 890 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 891 to_mpd(pd)->pd_num, 892 convert_access(acc), mr); 893 894 if (err) { 895 kfree(mr); 896 return ERR_PTR(err); 897 } 898 899 mr->umem = NULL; 900 901 return &mr->ibmr; 902 } 903 904 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 905 u64 virt, int acc, struct ib_udata *udata) 906 { 907 struct mthca_dev *dev = to_mdev(pd->device); 908 struct scatterlist *sg; 909 struct mthca_mr *mr; 910 struct mthca_reg_mr ucmd; 911 u64 *pages; 912 int shift, n, len; 913 int i, k, entry; 914 int err = 0; 915 int write_mtt_size; 916 917 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) { 918 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) { 919 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n", 920 current->comm); 921 mthca_warn(dev, " Update libmthca to fix this.\n"); 922 } 923 ++to_mucontext(pd->uobject->context)->reg_mr_warned; 924 ucmd.mr_attrs = 0; 925 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 926 return ERR_PTR(-EFAULT); 927 928 mr = kmalloc(sizeof *mr, GFP_KERNEL); 929 if (!mr) 930 return ERR_PTR(-ENOMEM); 931 932 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 933 ucmd.mr_attrs & MTHCA_MR_DMASYNC); 934 935 if (IS_ERR(mr->umem)) { 936 err = PTR_ERR(mr->umem); 937 goto err; 938 } 939 940 shift = mr->umem->page_shift; 941 n = mr->umem->nmap; 942 943 mr->mtt = mthca_alloc_mtt(dev, n); 944 if (IS_ERR(mr->mtt)) { 945 err = PTR_ERR(mr->mtt); 946 goto err_umem; 947 } 948 949 pages = (u64 *) __get_free_page(GFP_KERNEL); 950 if (!pages) { 951 err = -ENOMEM; 952 goto err_mtt; 953 } 954 955 i = n = 0; 956 957 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 958 959 for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) { 960 len = sg_dma_len(sg) >> shift; 961 for (k = 0; k < len; ++k) { 962 pages[i++] = sg_dma_address(sg) + (k << shift); 963 /* 964 * Be friendly to write_mtt and pass it chunks 965 * of appropriate size. 966 */ 967 if (i == write_mtt_size) { 968 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 969 if (err) 970 goto mtt_done; 971 n += i; 972 i = 0; 973 } 974 } 975 } 976 977 if (i) 978 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 979 mtt_done: 980 free_page((unsigned long) pages); 981 if (err) 982 goto err_mtt; 983 984 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length, 985 convert_access(acc), mr); 986 987 if (err) 988 goto err_mtt; 989 990 return &mr->ibmr; 991 992 err_mtt: 993 mthca_free_mtt(dev, mr->mtt); 994 995 err_umem: 996 ib_umem_release(mr->umem); 997 998 err: 999 kfree(mr); 1000 return ERR_PTR(err); 1001 } 1002 1003 static int mthca_dereg_mr(struct ib_mr *mr) 1004 { 1005 struct mthca_mr *mmr = to_mmr(mr); 1006 1007 mthca_free_mr(to_mdev(mr->device), mmr); 1008 if (mmr->umem) 1009 ib_umem_release(mmr->umem); 1010 kfree(mmr); 1011 1012 return 0; 1013 } 1014 1015 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 1016 struct ib_fmr_attr *fmr_attr) 1017 { 1018 struct mthca_fmr *fmr; 1019 int err; 1020 1021 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 1022 if (!fmr) 1023 return ERR_PTR(-ENOMEM); 1024 1025 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 1026 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 1027 convert_access(mr_access_flags), fmr); 1028 1029 if (err) { 1030 kfree(fmr); 1031 return ERR_PTR(err); 1032 } 1033 1034 return &fmr->ibmr; 1035 } 1036 1037 static int mthca_dealloc_fmr(struct ib_fmr *fmr) 1038 { 1039 struct mthca_fmr *mfmr = to_mfmr(fmr); 1040 int err; 1041 1042 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 1043 if (err) 1044 return err; 1045 1046 kfree(mfmr); 1047 return 0; 1048 } 1049 1050 static int mthca_unmap_fmr(struct list_head *fmr_list) 1051 { 1052 struct ib_fmr *fmr; 1053 int err; 1054 struct mthca_dev *mdev = NULL; 1055 1056 list_for_each_entry(fmr, fmr_list, list) { 1057 if (mdev && to_mdev(fmr->device) != mdev) 1058 return -EINVAL; 1059 mdev = to_mdev(fmr->device); 1060 } 1061 1062 if (!mdev) 1063 return 0; 1064 1065 if (mthca_is_memfree(mdev)) { 1066 list_for_each_entry(fmr, fmr_list, list) 1067 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1068 1069 wmb(); 1070 } else 1071 list_for_each_entry(fmr, fmr_list, list) 1072 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1073 1074 err = mthca_SYNC_TPT(mdev); 1075 return err; 1076 } 1077 1078 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1079 char *buf) 1080 { 1081 struct mthca_dev *dev = 1082 container_of(device, struct mthca_dev, ib_dev.dev); 1083 return sprintf(buf, "%x\n", dev->rev_id); 1084 } 1085 1086 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1087 char *buf) 1088 { 1089 struct mthca_dev *dev = 1090 container_of(device, struct mthca_dev, ib_dev.dev); 1091 switch (dev->pdev->device) { 1092 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1093 return sprintf(buf, "MT23108\n"); 1094 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1095 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1096 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1097 return sprintf(buf, "MT25208\n"); 1098 case PCI_DEVICE_ID_MELLANOX_SINAI: 1099 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1100 return sprintf(buf, "MT25204\n"); 1101 default: 1102 return sprintf(buf, "unknown\n"); 1103 } 1104 } 1105 1106 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1107 char *buf) 1108 { 1109 struct mthca_dev *dev = 1110 container_of(device, struct mthca_dev, ib_dev.dev); 1111 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1112 } 1113 1114 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1115 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1116 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1117 1118 static struct device_attribute *mthca_dev_attributes[] = { 1119 &dev_attr_hw_rev, 1120 &dev_attr_hca_type, 1121 &dev_attr_board_id 1122 }; 1123 1124 static int mthca_init_node_data(struct mthca_dev *dev) 1125 { 1126 struct ib_smp *in_mad = NULL; 1127 struct ib_smp *out_mad = NULL; 1128 int err = -ENOMEM; 1129 1130 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1131 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1132 if (!in_mad || !out_mad) 1133 goto out; 1134 1135 init_query_mad(in_mad); 1136 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1137 1138 err = mthca_MAD_IFC(dev, 1, 1, 1139 1, NULL, NULL, in_mad, out_mad); 1140 if (err) 1141 goto out; 1142 1143 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 1144 1145 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1146 1147 err = mthca_MAD_IFC(dev, 1, 1, 1148 1, NULL, NULL, in_mad, out_mad); 1149 if (err) 1150 goto out; 1151 1152 if (mthca_is_memfree(dev)) 1153 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1154 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1155 1156 out: 1157 kfree(in_mad); 1158 kfree(out_mad); 1159 return err; 1160 } 1161 1162 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num, 1163 struct ib_port_immutable *immutable) 1164 { 1165 struct ib_port_attr attr; 1166 int err; 1167 1168 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 1169 1170 err = ib_query_port(ibdev, port_num, &attr); 1171 if (err) 1172 return err; 1173 1174 immutable->pkey_tbl_len = attr.pkey_tbl_len; 1175 immutable->gid_tbl_len = attr.gid_tbl_len; 1176 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 1177 1178 return 0; 1179 } 1180 1181 static void get_dev_fw_str(struct ib_device *device, char *str, 1182 size_t str_len) 1183 { 1184 struct mthca_dev *dev = 1185 container_of(device, struct mthca_dev, ib_dev); 1186 snprintf(str, str_len, "%d.%d.%d", 1187 (int) (dev->fw_ver >> 32), 1188 (int) (dev->fw_ver >> 16) & 0xffff, 1189 (int) dev->fw_ver & 0xffff); 1190 } 1191 1192 int mthca_register_device(struct mthca_dev *dev) 1193 { 1194 int ret; 1195 int i; 1196 1197 ret = mthca_init_node_data(dev); 1198 if (ret) 1199 return ret; 1200 1201 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1202 dev->ib_dev.owner = THIS_MODULE; 1203 1204 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1205 dev->ib_dev.uverbs_cmd_mask = 1206 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1207 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1208 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1209 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1210 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1211 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1212 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1213 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1214 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1215 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1216 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1217 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1218 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1219 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1220 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1221 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1222 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1223 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1224 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1225 dev->ib_dev.num_comp_vectors = 1; 1226 dev->ib_dev.dev.parent = &dev->pdev->dev; 1227 dev->ib_dev.query_device = mthca_query_device; 1228 dev->ib_dev.query_port = mthca_query_port; 1229 dev->ib_dev.modify_device = mthca_modify_device; 1230 dev->ib_dev.modify_port = mthca_modify_port; 1231 dev->ib_dev.query_pkey = mthca_query_pkey; 1232 dev->ib_dev.query_gid = mthca_query_gid; 1233 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1234 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1235 dev->ib_dev.mmap = mthca_mmap_uar; 1236 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1237 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1238 dev->ib_dev.create_ah = mthca_ah_create; 1239 dev->ib_dev.query_ah = mthca_ah_query; 1240 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1241 1242 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1243 dev->ib_dev.create_srq = mthca_create_srq; 1244 dev->ib_dev.modify_srq = mthca_modify_srq; 1245 dev->ib_dev.query_srq = mthca_query_srq; 1246 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1247 dev->ib_dev.uverbs_cmd_mask |= 1248 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1249 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1250 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1251 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1252 1253 if (mthca_is_memfree(dev)) 1254 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1255 else 1256 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1257 } 1258 1259 dev->ib_dev.create_qp = mthca_create_qp; 1260 dev->ib_dev.modify_qp = mthca_modify_qp; 1261 dev->ib_dev.query_qp = mthca_query_qp; 1262 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1263 dev->ib_dev.create_cq = mthca_create_cq; 1264 dev->ib_dev.resize_cq = mthca_resize_cq; 1265 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1266 dev->ib_dev.poll_cq = mthca_poll_cq; 1267 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1268 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1269 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1270 dev->ib_dev.get_port_immutable = mthca_port_immutable; 1271 dev->ib_dev.get_dev_fw_str = get_dev_fw_str; 1272 1273 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1274 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1275 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1276 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1277 if (mthca_is_memfree(dev)) 1278 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1279 else 1280 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1281 } 1282 1283 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1284 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1285 dev->ib_dev.process_mad = mthca_process_mad; 1286 1287 if (mthca_is_memfree(dev)) { 1288 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1289 dev->ib_dev.post_send = mthca_arbel_post_send; 1290 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1291 } else { 1292 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1293 dev->ib_dev.post_send = mthca_tavor_post_send; 1294 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1295 } 1296 1297 mutex_init(&dev->cap_mask_mutex); 1298 1299 ret = ib_register_device(&dev->ib_dev, NULL); 1300 if (ret) 1301 return ret; 1302 1303 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) { 1304 ret = device_create_file(&dev->ib_dev.dev, 1305 mthca_dev_attributes[i]); 1306 if (ret) { 1307 ib_unregister_device(&dev->ib_dev); 1308 return ret; 1309 } 1310 } 1311 1312 mthca_start_catas_poll(dev); 1313 1314 return 0; 1315 } 1316 1317 void mthca_unregister_device(struct mthca_dev *dev) 1318 { 1319 mthca_stop_catas_poll(dev); 1320 ib_unregister_device(&dev->ib_dev); 1321 } 1322