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/mm.h> 44 #include <linux/fs.h> 45 46 #include "mthca_dev.h" 47 #include "mthca_cmd.h" 48 #include <rdma/mthca-abi.h> 49 #include "mthca_memfree.h" 50 51 static void init_query_mad(struct ib_smp *mad) 52 { 53 mad->base_version = 1; 54 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 55 mad->class_version = 1; 56 mad->method = IB_MGMT_METHOD_GET; 57 } 58 59 static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props, 60 struct ib_udata *uhw) 61 { 62 struct ib_smp *in_mad = NULL; 63 struct ib_smp *out_mad = NULL; 64 int err = -ENOMEM; 65 struct mthca_dev *mdev = to_mdev(ibdev); 66 67 if (uhw->inlen || uhw->outlen) 68 return -EINVAL; 69 70 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 71 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 72 if (!in_mad || !out_mad) 73 goto out; 74 75 memset(props, 0, sizeof *props); 76 77 props->fw_ver = mdev->fw_ver; 78 79 init_query_mad(in_mad); 80 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 81 82 err = mthca_MAD_IFC(mdev, 1, 1, 83 1, NULL, NULL, in_mad, out_mad); 84 if (err) 85 goto out; 86 87 props->device_cap_flags = mdev->device_cap_flags; 88 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 89 0xffffff; 90 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 91 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 92 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 93 94 props->max_mr_size = ~0ull; 95 props->page_size_cap = mdev->limits.page_size_cap; 96 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps; 97 props->max_qp_wr = mdev->limits.max_wqes; 98 props->max_sge = mdev->limits.max_sg; 99 props->max_sge_rd = props->max_sge; 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; 142 143 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 144 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 145 if (!in_mad || !out_mad) 146 goto out; 147 148 memset(props, 0, sizeof *props); 149 150 init_query_mad(in_mad); 151 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 152 in_mad->attr_mod = cpu_to_be32(port); 153 154 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 155 port, NULL, NULL, in_mad, out_mad); 156 if (err) 157 goto out; 158 159 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 160 props->lmc = out_mad->data[34] & 0x7; 161 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 162 props->sm_sl = out_mad->data[36] & 0xf; 163 props->state = out_mad->data[32] & 0xf; 164 props->phys_state = out_mad->data[33] >> 4; 165 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 166 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len; 167 props->max_msg_sz = 0x80000000; 168 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len; 169 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 170 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 171 props->active_width = out_mad->data[31] & 0xf; 172 props->active_speed = out_mad->data[35] >> 4; 173 props->max_mtu = out_mad->data[41] & 0xf; 174 props->active_mtu = out_mad->data[36] >> 4; 175 props->subnet_timeout = out_mad->data[51] & 0x1f; 176 props->max_vl_num = out_mad->data[37] >> 4; 177 props->init_type_reply = out_mad->data[41] >> 4; 178 179 out: 180 kfree(in_mad); 181 kfree(out_mad); 182 return err; 183 } 184 185 static int mthca_modify_device(struct ib_device *ibdev, 186 int mask, 187 struct ib_device_modify *props) 188 { 189 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 190 return -EOPNOTSUPP; 191 192 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 193 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 194 return -ERESTARTSYS; 195 memcpy(ibdev->node_desc, props->node_desc, 196 IB_DEVICE_NODE_DESC_MAX); 197 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 198 } 199 200 return 0; 201 } 202 203 static int mthca_modify_port(struct ib_device *ibdev, 204 u8 port, int port_modify_mask, 205 struct ib_port_modify *props) 206 { 207 struct mthca_set_ib_param set_ib; 208 struct ib_port_attr attr; 209 int err; 210 211 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 212 return -ERESTARTSYS; 213 214 err = mthca_query_port(ibdev, port, &attr); 215 if (err) 216 goto out; 217 218 set_ib.set_si_guid = 0; 219 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 220 221 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 222 ~props->clr_port_cap_mask; 223 224 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port); 225 if (err) 226 goto out; 227 out: 228 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 229 return err; 230 } 231 232 static int mthca_query_pkey(struct ib_device *ibdev, 233 u8 port, u16 index, u16 *pkey) 234 { 235 struct ib_smp *in_mad = NULL; 236 struct ib_smp *out_mad = NULL; 237 int err = -ENOMEM; 238 239 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 240 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 241 if (!in_mad || !out_mad) 242 goto out; 243 244 init_query_mad(in_mad); 245 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 246 in_mad->attr_mod = cpu_to_be32(index / 32); 247 248 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 249 port, NULL, NULL, in_mad, out_mad); 250 if (err) 251 goto out; 252 253 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 254 255 out: 256 kfree(in_mad); 257 kfree(out_mad); 258 return err; 259 } 260 261 static int mthca_query_gid(struct ib_device *ibdev, u8 port, 262 int index, union ib_gid *gid) 263 { 264 struct ib_smp *in_mad = NULL; 265 struct ib_smp *out_mad = NULL; 266 int err = -ENOMEM; 267 268 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 269 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 270 if (!in_mad || !out_mad) 271 goto out; 272 273 init_query_mad(in_mad); 274 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 275 in_mad->attr_mod = cpu_to_be32(port); 276 277 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 278 port, NULL, NULL, in_mad, out_mad); 279 if (err) 280 goto out; 281 282 memcpy(gid->raw, out_mad->data + 8, 8); 283 284 init_query_mad(in_mad); 285 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 286 in_mad->attr_mod = cpu_to_be32(index / 8); 287 288 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 289 port, NULL, NULL, in_mad, out_mad); 290 if (err) 291 goto out; 292 293 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 294 295 out: 296 kfree(in_mad); 297 kfree(out_mad); 298 return err; 299 } 300 301 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev, 302 struct ib_udata *udata) 303 { 304 struct mthca_alloc_ucontext_resp uresp; 305 struct mthca_ucontext *context; 306 int err; 307 308 if (!(to_mdev(ibdev)->active)) 309 return ERR_PTR(-EAGAIN); 310 311 memset(&uresp, 0, sizeof uresp); 312 313 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps; 314 if (mthca_is_memfree(to_mdev(ibdev))) 315 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size; 316 else 317 uresp.uarc_size = 0; 318 319 context = kmalloc(sizeof *context, GFP_KERNEL); 320 if (!context) 321 return ERR_PTR(-ENOMEM); 322 323 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 324 if (err) { 325 kfree(context); 326 return ERR_PTR(err); 327 } 328 329 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 330 if (IS_ERR(context->db_tab)) { 331 err = PTR_ERR(context->db_tab); 332 mthca_uar_free(to_mdev(ibdev), &context->uar); 333 kfree(context); 334 return ERR_PTR(err); 335 } 336 337 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 338 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 339 mthca_uar_free(to_mdev(ibdev), &context->uar); 340 kfree(context); 341 return ERR_PTR(-EFAULT); 342 } 343 344 context->reg_mr_warned = 0; 345 346 return &context->ibucontext; 347 } 348 349 static int mthca_dealloc_ucontext(struct ib_ucontext *context) 350 { 351 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 352 to_mucontext(context)->db_tab); 353 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 354 kfree(to_mucontext(context)); 355 356 return 0; 357 } 358 359 static int mthca_mmap_uar(struct ib_ucontext *context, 360 struct vm_area_struct *vma) 361 { 362 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 363 return -EINVAL; 364 365 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 366 367 if (io_remap_pfn_range(vma, vma->vm_start, 368 to_mucontext(context)->uar.pfn, 369 PAGE_SIZE, vma->vm_page_prot)) 370 return -EAGAIN; 371 372 return 0; 373 } 374 375 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev, 376 struct ib_ucontext *context, 377 struct ib_udata *udata) 378 { 379 struct mthca_pd *pd; 380 int err; 381 382 pd = kmalloc(sizeof *pd, GFP_KERNEL); 383 if (!pd) 384 return ERR_PTR(-ENOMEM); 385 386 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd); 387 if (err) { 388 kfree(pd); 389 return ERR_PTR(err); 390 } 391 392 if (context) { 393 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 394 mthca_pd_free(to_mdev(ibdev), pd); 395 kfree(pd); 396 return ERR_PTR(-EFAULT); 397 } 398 } 399 400 return &pd->ibpd; 401 } 402 403 static int mthca_dealloc_pd(struct ib_pd *pd) 404 { 405 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 406 kfree(pd); 407 408 return 0; 409 } 410 411 static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 412 struct ib_ah_attr *ah_attr, 413 struct ib_udata *udata) 414 { 415 int err; 416 struct mthca_ah *ah; 417 418 ah = kmalloc(sizeof *ah, GFP_ATOMIC); 419 if (!ah) 420 return ERR_PTR(-ENOMEM); 421 422 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 423 if (err) { 424 kfree(ah); 425 return ERR_PTR(err); 426 } 427 428 return &ah->ibah; 429 } 430 431 static int mthca_ah_destroy(struct ib_ah *ah) 432 { 433 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 434 kfree(ah); 435 436 return 0; 437 } 438 439 static struct ib_srq *mthca_create_srq(struct ib_pd *pd, 440 struct ib_srq_init_attr *init_attr, 441 struct ib_udata *udata) 442 { 443 struct mthca_create_srq ucmd; 444 struct mthca_ucontext *context = NULL; 445 struct mthca_srq *srq; 446 int err; 447 448 if (init_attr->srq_type != IB_SRQT_BASIC) 449 return ERR_PTR(-ENOSYS); 450 451 srq = kmalloc(sizeof *srq, GFP_KERNEL); 452 if (!srq) 453 return ERR_PTR(-ENOMEM); 454 455 if (pd->uobject) { 456 context = to_mucontext(pd->uobject->context); 457 458 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 459 err = -EFAULT; 460 goto err_free; 461 } 462 463 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 464 context->db_tab, ucmd.db_index, 465 ucmd.db_page); 466 467 if (err) 468 goto err_free; 469 470 srq->mr.ibmr.lkey = ucmd.lkey; 471 srq->db_index = ucmd.db_index; 472 } 473 474 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd), 475 &init_attr->attr, srq); 476 477 if (err && pd->uobject) 478 mthca_unmap_user_db(to_mdev(pd->device), &context->uar, 479 context->db_tab, ucmd.db_index); 480 481 if (err) 482 goto err_free; 483 484 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) { 485 mthca_free_srq(to_mdev(pd->device), srq); 486 err = -EFAULT; 487 goto err_free; 488 } 489 490 return &srq->ibsrq; 491 492 err_free: 493 kfree(srq); 494 495 return ERR_PTR(err); 496 } 497 498 static int mthca_destroy_srq(struct ib_srq *srq) 499 { 500 struct mthca_ucontext *context; 501 502 if (srq->uobject) { 503 context = to_mucontext(srq->uobject->context); 504 505 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 506 context->db_tab, to_msrq(srq)->db_index); 507 } 508 509 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 510 kfree(srq); 511 512 return 0; 513 } 514 515 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 516 struct ib_qp_init_attr *init_attr, 517 struct ib_udata *udata) 518 { 519 struct mthca_create_qp ucmd; 520 struct mthca_qp *qp; 521 int err; 522 523 if (init_attr->create_flags) 524 return ERR_PTR(-EINVAL); 525 526 switch (init_attr->qp_type) { 527 case IB_QPT_RC: 528 case IB_QPT_UC: 529 case IB_QPT_UD: 530 { 531 struct mthca_ucontext *context; 532 533 qp = kmalloc(sizeof *qp, GFP_KERNEL); 534 if (!qp) 535 return ERR_PTR(-ENOMEM); 536 537 if (pd->uobject) { 538 context = to_mucontext(pd->uobject->context); 539 540 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 541 kfree(qp); 542 return ERR_PTR(-EFAULT); 543 } 544 545 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 546 context->db_tab, 547 ucmd.sq_db_index, ucmd.sq_db_page); 548 if (err) { 549 kfree(qp); 550 return ERR_PTR(err); 551 } 552 553 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 554 context->db_tab, 555 ucmd.rq_db_index, ucmd.rq_db_page); 556 if (err) { 557 mthca_unmap_user_db(to_mdev(pd->device), 558 &context->uar, 559 context->db_tab, 560 ucmd.sq_db_index); 561 kfree(qp); 562 return ERR_PTR(err); 563 } 564 565 qp->mr.ibmr.lkey = ucmd.lkey; 566 qp->sq.db_index = ucmd.sq_db_index; 567 qp->rq.db_index = ucmd.rq_db_index; 568 } 569 570 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 571 to_mcq(init_attr->send_cq), 572 to_mcq(init_attr->recv_cq), 573 init_attr->qp_type, init_attr->sq_sig_type, 574 &init_attr->cap, qp); 575 576 if (err && pd->uobject) { 577 context = to_mucontext(pd->uobject->context); 578 579 mthca_unmap_user_db(to_mdev(pd->device), 580 &context->uar, 581 context->db_tab, 582 ucmd.sq_db_index); 583 mthca_unmap_user_db(to_mdev(pd->device), 584 &context->uar, 585 context->db_tab, 586 ucmd.rq_db_index); 587 } 588 589 qp->ibqp.qp_num = qp->qpn; 590 break; 591 } 592 case IB_QPT_SMI: 593 case IB_QPT_GSI: 594 { 595 /* Don't allow userspace to create special QPs */ 596 if (pd->uobject) 597 return ERR_PTR(-EINVAL); 598 599 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 600 if (!qp) 601 return ERR_PTR(-ENOMEM); 602 603 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 604 605 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 606 to_mcq(init_attr->send_cq), 607 to_mcq(init_attr->recv_cq), 608 init_attr->sq_sig_type, &init_attr->cap, 609 qp->ibqp.qp_num, init_attr->port_num, 610 to_msqp(qp)); 611 break; 612 } 613 default: 614 /* Don't support raw QPs */ 615 return ERR_PTR(-ENOSYS); 616 } 617 618 if (err) { 619 kfree(qp); 620 return ERR_PTR(err); 621 } 622 623 init_attr->cap.max_send_wr = qp->sq.max; 624 init_attr->cap.max_recv_wr = qp->rq.max; 625 init_attr->cap.max_send_sge = qp->sq.max_gs; 626 init_attr->cap.max_recv_sge = qp->rq.max_gs; 627 init_attr->cap.max_inline_data = qp->max_inline_data; 628 629 return &qp->ibqp; 630 } 631 632 static int mthca_destroy_qp(struct ib_qp *qp) 633 { 634 if (qp->uobject) { 635 mthca_unmap_user_db(to_mdev(qp->device), 636 &to_mucontext(qp->uobject->context)->uar, 637 to_mucontext(qp->uobject->context)->db_tab, 638 to_mqp(qp)->sq.db_index); 639 mthca_unmap_user_db(to_mdev(qp->device), 640 &to_mucontext(qp->uobject->context)->uar, 641 to_mucontext(qp->uobject->context)->db_tab, 642 to_mqp(qp)->rq.db_index); 643 } 644 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 645 kfree(qp); 646 return 0; 647 } 648 649 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, 650 const struct ib_cq_init_attr *attr, 651 struct ib_ucontext *context, 652 struct ib_udata *udata) 653 { 654 int entries = attr->cqe; 655 struct mthca_create_cq ucmd; 656 struct mthca_cq *cq; 657 int nent; 658 int err; 659 660 if (attr->flags) 661 return ERR_PTR(-EINVAL); 662 663 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 664 return ERR_PTR(-EINVAL); 665 666 if (context) { 667 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 668 return ERR_PTR(-EFAULT); 669 670 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 671 to_mucontext(context)->db_tab, 672 ucmd.set_db_index, ucmd.set_db_page); 673 if (err) 674 return ERR_PTR(err); 675 676 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 677 to_mucontext(context)->db_tab, 678 ucmd.arm_db_index, ucmd.arm_db_page); 679 if (err) 680 goto err_unmap_set; 681 } 682 683 cq = kmalloc(sizeof *cq, GFP_KERNEL); 684 if (!cq) { 685 err = -ENOMEM; 686 goto err_unmap_arm; 687 } 688 689 if (context) { 690 cq->buf.mr.ibmr.lkey = ucmd.lkey; 691 cq->set_ci_db_index = ucmd.set_db_index; 692 cq->arm_db_index = ucmd.arm_db_index; 693 } 694 695 for (nent = 1; nent <= entries; nent <<= 1) 696 ; /* nothing */ 697 698 err = mthca_init_cq(to_mdev(ibdev), nent, 699 context ? to_mucontext(context) : NULL, 700 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 701 cq); 702 if (err) 703 goto err_free; 704 705 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) { 706 mthca_free_cq(to_mdev(ibdev), cq); 707 err = -EFAULT; 708 goto err_free; 709 } 710 711 cq->resize_buf = NULL; 712 713 return &cq->ibcq; 714 715 err_free: 716 kfree(cq); 717 718 err_unmap_arm: 719 if (context) 720 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 721 to_mucontext(context)->db_tab, ucmd.arm_db_index); 722 723 err_unmap_set: 724 if (context) 725 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 726 to_mucontext(context)->db_tab, ucmd.set_db_index); 727 728 return ERR_PTR(err); 729 } 730 731 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 732 int entries) 733 { 734 int ret; 735 736 spin_lock_irq(&cq->lock); 737 if (cq->resize_buf) { 738 ret = -EBUSY; 739 goto unlock; 740 } 741 742 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 743 if (!cq->resize_buf) { 744 ret = -ENOMEM; 745 goto unlock; 746 } 747 748 cq->resize_buf->state = CQ_RESIZE_ALLOC; 749 750 ret = 0; 751 752 unlock: 753 spin_unlock_irq(&cq->lock); 754 755 if (ret) 756 return ret; 757 758 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 759 if (ret) { 760 spin_lock_irq(&cq->lock); 761 kfree(cq->resize_buf); 762 cq->resize_buf = NULL; 763 spin_unlock_irq(&cq->lock); 764 return ret; 765 } 766 767 cq->resize_buf->cqe = entries - 1; 768 769 spin_lock_irq(&cq->lock); 770 cq->resize_buf->state = CQ_RESIZE_READY; 771 spin_unlock_irq(&cq->lock); 772 773 return 0; 774 } 775 776 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 777 { 778 struct mthca_dev *dev = to_mdev(ibcq->device); 779 struct mthca_cq *cq = to_mcq(ibcq); 780 struct mthca_resize_cq ucmd; 781 u32 lkey; 782 int ret; 783 784 if (entries < 1 || entries > dev->limits.max_cqes) 785 return -EINVAL; 786 787 mutex_lock(&cq->mutex); 788 789 entries = roundup_pow_of_two(entries + 1); 790 if (entries == ibcq->cqe + 1) { 791 ret = 0; 792 goto out; 793 } 794 795 if (cq->is_kernel) { 796 ret = mthca_alloc_resize_buf(dev, cq, entries); 797 if (ret) 798 goto out; 799 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 800 } else { 801 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 802 ret = -EFAULT; 803 goto out; 804 } 805 lkey = ucmd.lkey; 806 } 807 808 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries)); 809 810 if (ret) { 811 if (cq->resize_buf) { 812 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 813 cq->resize_buf->cqe); 814 kfree(cq->resize_buf); 815 spin_lock_irq(&cq->lock); 816 cq->resize_buf = NULL; 817 spin_unlock_irq(&cq->lock); 818 } 819 goto out; 820 } 821 822 if (cq->is_kernel) { 823 struct mthca_cq_buf tbuf; 824 int tcqe; 825 826 spin_lock_irq(&cq->lock); 827 if (cq->resize_buf->state == CQ_RESIZE_READY) { 828 mthca_cq_resize_copy_cqes(cq); 829 tbuf = cq->buf; 830 tcqe = cq->ibcq.cqe; 831 cq->buf = cq->resize_buf->buf; 832 cq->ibcq.cqe = cq->resize_buf->cqe; 833 } else { 834 tbuf = cq->resize_buf->buf; 835 tcqe = cq->resize_buf->cqe; 836 } 837 838 kfree(cq->resize_buf); 839 cq->resize_buf = NULL; 840 spin_unlock_irq(&cq->lock); 841 842 mthca_free_cq_buf(dev, &tbuf, tcqe); 843 } else 844 ibcq->cqe = entries - 1; 845 846 out: 847 mutex_unlock(&cq->mutex); 848 849 return ret; 850 } 851 852 static int mthca_destroy_cq(struct ib_cq *cq) 853 { 854 if (cq->uobject) { 855 mthca_unmap_user_db(to_mdev(cq->device), 856 &to_mucontext(cq->uobject->context)->uar, 857 to_mucontext(cq->uobject->context)->db_tab, 858 to_mcq(cq)->arm_db_index); 859 mthca_unmap_user_db(to_mdev(cq->device), 860 &to_mucontext(cq->uobject->context)->uar, 861 to_mucontext(cq->uobject->context)->db_tab, 862 to_mcq(cq)->set_ci_db_index); 863 } 864 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 865 kfree(cq); 866 867 return 0; 868 } 869 870 static inline u32 convert_access(int acc) 871 { 872 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 873 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 874 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 875 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 876 MTHCA_MPT_FLAG_LOCAL_READ; 877 } 878 879 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 880 { 881 struct mthca_mr *mr; 882 int err; 883 884 mr = kmalloc(sizeof *mr, GFP_KERNEL); 885 if (!mr) 886 return ERR_PTR(-ENOMEM); 887 888 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 889 to_mpd(pd)->pd_num, 890 convert_access(acc), mr); 891 892 if (err) { 893 kfree(mr); 894 return ERR_PTR(err); 895 } 896 897 mr->umem = NULL; 898 899 return &mr->ibmr; 900 } 901 902 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 903 u64 virt, int acc, struct ib_udata *udata) 904 { 905 struct mthca_dev *dev = to_mdev(pd->device); 906 struct scatterlist *sg; 907 struct mthca_mr *mr; 908 struct mthca_reg_mr ucmd; 909 u64 *pages; 910 int shift, n, len; 911 int i, k, entry; 912 int err = 0; 913 int write_mtt_size; 914 915 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) { 916 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) { 917 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n", 918 current->comm); 919 mthca_warn(dev, " Update libmthca to fix this.\n"); 920 } 921 ++to_mucontext(pd->uobject->context)->reg_mr_warned; 922 ucmd.mr_attrs = 0; 923 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 924 return ERR_PTR(-EFAULT); 925 926 mr = kmalloc(sizeof *mr, GFP_KERNEL); 927 if (!mr) 928 return ERR_PTR(-ENOMEM); 929 930 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 931 ucmd.mr_attrs & MTHCA_MR_DMASYNC); 932 933 if (IS_ERR(mr->umem)) { 934 err = PTR_ERR(mr->umem); 935 goto err; 936 } 937 938 shift = ffs(mr->umem->page_size) - 1; 939 n = mr->umem->nmap; 940 941 mr->mtt = mthca_alloc_mtt(dev, n); 942 if (IS_ERR(mr->mtt)) { 943 err = PTR_ERR(mr->mtt); 944 goto err_umem; 945 } 946 947 pages = (u64 *) __get_free_page(GFP_KERNEL); 948 if (!pages) { 949 err = -ENOMEM; 950 goto err_mtt; 951 } 952 953 i = n = 0; 954 955 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 956 957 for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) { 958 len = sg_dma_len(sg) >> shift; 959 for (k = 0; k < len; ++k) { 960 pages[i++] = sg_dma_address(sg) + 961 mr->umem->page_size * k; 962 /* 963 * Be friendly to write_mtt and pass it chunks 964 * of appropriate size. 965 */ 966 if (i == write_mtt_size) { 967 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 968 if (err) 969 goto mtt_done; 970 n += i; 971 i = 0; 972 } 973 } 974 } 975 976 if (i) 977 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 978 mtt_done: 979 free_page((unsigned long) pages); 980 if (err) 981 goto err_mtt; 982 983 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length, 984 convert_access(acc), mr); 985 986 if (err) 987 goto err_mtt; 988 989 return &mr->ibmr; 990 991 err_mtt: 992 mthca_free_mtt(dev, mr->mtt); 993 994 err_umem: 995 ib_umem_release(mr->umem); 996 997 err: 998 kfree(mr); 999 return ERR_PTR(err); 1000 } 1001 1002 static int mthca_dereg_mr(struct ib_mr *mr) 1003 { 1004 struct mthca_mr *mmr = to_mmr(mr); 1005 1006 mthca_free_mr(to_mdev(mr->device), mmr); 1007 if (mmr->umem) 1008 ib_umem_release(mmr->umem); 1009 kfree(mmr); 1010 1011 return 0; 1012 } 1013 1014 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 1015 struct ib_fmr_attr *fmr_attr) 1016 { 1017 struct mthca_fmr *fmr; 1018 int err; 1019 1020 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 1021 if (!fmr) 1022 return ERR_PTR(-ENOMEM); 1023 1024 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 1025 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 1026 convert_access(mr_access_flags), fmr); 1027 1028 if (err) { 1029 kfree(fmr); 1030 return ERR_PTR(err); 1031 } 1032 1033 return &fmr->ibmr; 1034 } 1035 1036 static int mthca_dealloc_fmr(struct ib_fmr *fmr) 1037 { 1038 struct mthca_fmr *mfmr = to_mfmr(fmr); 1039 int err; 1040 1041 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 1042 if (err) 1043 return err; 1044 1045 kfree(mfmr); 1046 return 0; 1047 } 1048 1049 static int mthca_unmap_fmr(struct list_head *fmr_list) 1050 { 1051 struct ib_fmr *fmr; 1052 int err; 1053 struct mthca_dev *mdev = NULL; 1054 1055 list_for_each_entry(fmr, fmr_list, list) { 1056 if (mdev && to_mdev(fmr->device) != mdev) 1057 return -EINVAL; 1058 mdev = to_mdev(fmr->device); 1059 } 1060 1061 if (!mdev) 1062 return 0; 1063 1064 if (mthca_is_memfree(mdev)) { 1065 list_for_each_entry(fmr, fmr_list, list) 1066 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1067 1068 wmb(); 1069 } else 1070 list_for_each_entry(fmr, fmr_list, list) 1071 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1072 1073 err = mthca_SYNC_TPT(mdev); 1074 return err; 1075 } 1076 1077 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1078 char *buf) 1079 { 1080 struct mthca_dev *dev = 1081 container_of(device, struct mthca_dev, ib_dev.dev); 1082 return sprintf(buf, "%x\n", dev->rev_id); 1083 } 1084 1085 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1086 char *buf) 1087 { 1088 struct mthca_dev *dev = 1089 container_of(device, struct mthca_dev, ib_dev.dev); 1090 switch (dev->pdev->device) { 1091 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1092 return sprintf(buf, "MT23108\n"); 1093 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1094 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1095 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1096 return sprintf(buf, "MT25208\n"); 1097 case PCI_DEVICE_ID_MELLANOX_SINAI: 1098 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1099 return sprintf(buf, "MT25204\n"); 1100 default: 1101 return sprintf(buf, "unknown\n"); 1102 } 1103 } 1104 1105 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1106 char *buf) 1107 { 1108 struct mthca_dev *dev = 1109 container_of(device, struct mthca_dev, ib_dev.dev); 1110 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1111 } 1112 1113 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1114 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1115 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1116 1117 static struct device_attribute *mthca_dev_attributes[] = { 1118 &dev_attr_hw_rev, 1119 &dev_attr_hca_type, 1120 &dev_attr_board_id 1121 }; 1122 1123 static int mthca_init_node_data(struct mthca_dev *dev) 1124 { 1125 struct ib_smp *in_mad = NULL; 1126 struct ib_smp *out_mad = NULL; 1127 int err = -ENOMEM; 1128 1129 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1130 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1131 if (!in_mad || !out_mad) 1132 goto out; 1133 1134 init_query_mad(in_mad); 1135 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1136 1137 err = mthca_MAD_IFC(dev, 1, 1, 1138 1, NULL, NULL, in_mad, out_mad); 1139 if (err) 1140 goto out; 1141 1142 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 1143 1144 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1145 1146 err = mthca_MAD_IFC(dev, 1, 1, 1147 1, NULL, NULL, in_mad, out_mad); 1148 if (err) 1149 goto out; 1150 1151 if (mthca_is_memfree(dev)) 1152 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1153 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1154 1155 out: 1156 kfree(in_mad); 1157 kfree(out_mad); 1158 return err; 1159 } 1160 1161 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num, 1162 struct ib_port_immutable *immutable) 1163 { 1164 struct ib_port_attr attr; 1165 int err; 1166 1167 err = mthca_query_port(ibdev, port_num, &attr); 1168 if (err) 1169 return err; 1170 1171 immutable->pkey_tbl_len = attr.pkey_tbl_len; 1172 immutable->gid_tbl_len = attr.gid_tbl_len; 1173 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 1174 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 1175 1176 return 0; 1177 } 1178 1179 static void get_dev_fw_str(struct ib_device *device, char *str, 1180 size_t str_len) 1181 { 1182 struct mthca_dev *dev = 1183 container_of(device, struct mthca_dev, ib_dev); 1184 snprintf(str, str_len, "%d.%d.%d", 1185 (int) (dev->fw_ver >> 32), 1186 (int) (dev->fw_ver >> 16) & 0xffff, 1187 (int) dev->fw_ver & 0xffff); 1188 } 1189 1190 int mthca_register_device(struct mthca_dev *dev) 1191 { 1192 int ret; 1193 int i; 1194 1195 ret = mthca_init_node_data(dev); 1196 if (ret) 1197 return ret; 1198 1199 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1200 dev->ib_dev.owner = THIS_MODULE; 1201 1202 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1203 dev->ib_dev.uverbs_cmd_mask = 1204 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1205 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1206 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1207 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1208 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1209 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1210 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1211 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1212 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1213 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1214 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1215 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1216 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1217 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1218 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1219 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1220 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1221 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1222 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1223 dev->ib_dev.num_comp_vectors = 1; 1224 dev->ib_dev.dma_device = &dev->pdev->dev; 1225 dev->ib_dev.query_device = mthca_query_device; 1226 dev->ib_dev.query_port = mthca_query_port; 1227 dev->ib_dev.modify_device = mthca_modify_device; 1228 dev->ib_dev.modify_port = mthca_modify_port; 1229 dev->ib_dev.query_pkey = mthca_query_pkey; 1230 dev->ib_dev.query_gid = mthca_query_gid; 1231 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1232 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1233 dev->ib_dev.mmap = mthca_mmap_uar; 1234 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1235 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1236 dev->ib_dev.create_ah = mthca_ah_create; 1237 dev->ib_dev.query_ah = mthca_ah_query; 1238 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1239 1240 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1241 dev->ib_dev.create_srq = mthca_create_srq; 1242 dev->ib_dev.modify_srq = mthca_modify_srq; 1243 dev->ib_dev.query_srq = mthca_query_srq; 1244 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1245 dev->ib_dev.uverbs_cmd_mask |= 1246 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1247 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1248 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1249 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1250 1251 if (mthca_is_memfree(dev)) 1252 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1253 else 1254 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1255 } 1256 1257 dev->ib_dev.create_qp = mthca_create_qp; 1258 dev->ib_dev.modify_qp = mthca_modify_qp; 1259 dev->ib_dev.query_qp = mthca_query_qp; 1260 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1261 dev->ib_dev.create_cq = mthca_create_cq; 1262 dev->ib_dev.resize_cq = mthca_resize_cq; 1263 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1264 dev->ib_dev.poll_cq = mthca_poll_cq; 1265 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1266 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1267 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1268 dev->ib_dev.get_port_immutable = mthca_port_immutable; 1269 dev->ib_dev.get_dev_fw_str = get_dev_fw_str; 1270 1271 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1272 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1273 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1274 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1275 if (mthca_is_memfree(dev)) 1276 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1277 else 1278 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1279 } 1280 1281 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1282 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1283 dev->ib_dev.process_mad = mthca_process_mad; 1284 1285 if (mthca_is_memfree(dev)) { 1286 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1287 dev->ib_dev.post_send = mthca_arbel_post_send; 1288 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1289 } else { 1290 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1291 dev->ib_dev.post_send = mthca_tavor_post_send; 1292 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1293 } 1294 1295 mutex_init(&dev->cap_mask_mutex); 1296 1297 ret = ib_register_device(&dev->ib_dev, NULL); 1298 if (ret) 1299 return ret; 1300 1301 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) { 1302 ret = device_create_file(&dev->ib_dev.dev, 1303 mthca_dev_attributes[i]); 1304 if (ret) { 1305 ib_unregister_device(&dev->ib_dev); 1306 return ret; 1307 } 1308 } 1309 1310 mthca_start_catas_poll(dev); 1311 1312 return 0; 1313 } 1314 1315 void mthca_unregister_device(struct mthca_dev *dev) 1316 { 1317 mthca_stop_catas_poll(dev); 1318 ib_unregister_device(&dev->ib_dev); 1319 } 1320