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/mm.h> 43 44#include "mthca_dev.h" 45#include "mthca_cmd.h" 46#include "mthca_user.h" 47#include "mthca_memfree.h" 48 49static void init_query_mad(struct ib_smp *mad) 50{ 51 mad->base_version = 1; 52 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 53 mad->class_version = 1; 54 mad->method = IB_MGMT_METHOD_GET; 55} 56 57static int mthca_query_device(struct ib_device *ibdev, 58 struct ib_device_attr *props) 59{ 60 struct ib_smp *in_mad = NULL; 61 struct ib_smp *out_mad = NULL; 62 int err = -ENOMEM; 63 struct mthca_dev *mdev = to_mdev(ibdev); 64 65 u8 status; 66 67 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 68 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 69 if (!in_mad || !out_mad) 70 goto out; 71 72 memset(props, 0, sizeof *props); 73 74 props->fw_ver = mdev->fw_ver; 75 76 init_query_mad(in_mad); 77 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 78 79 err = mthca_MAD_IFC(mdev, 1, 1, 80 1, NULL, NULL, in_mad, out_mad, 81 &status); 82 if (err) 83 goto out; 84 if (status) { 85 err = -EINVAL; 86 goto out; 87 } 88 89 props->device_cap_flags = mdev->device_cap_flags; 90 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 91 0xffffff; 92 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); 93 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 94 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 95 96 props->max_mr_size = ~0ull; 97 props->page_size_cap = mdev->limits.page_size_cap; 98 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps; 99 props->max_qp_wr = mdev->limits.max_wqes; 100 props->max_sge = mdev->limits.max_sg; 101 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs; 102 props->max_cqe = mdev->limits.max_cqes; 103 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws; 104 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds; 105 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift; 106 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma; 107 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 108 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs; 109 props->max_srq_wr = mdev->limits.max_srq_wqes; 110 props->max_srq_sge = mdev->limits.max_srq_sge; 111 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay; 112 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ? 113 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 114 props->max_pkeys = mdev->limits.pkey_table_len; 115 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms; 116 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM; 117 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 118 props->max_mcast_grp; 119 /* 120 * If Sinai memory key optimization is being used, then only 121 * the 8-bit key portion will change. For other HCAs, the 122 * unused index bits will also be used for FMR remapping. 123 */ 124 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT) 125 props->max_map_per_fmr = 255; 126 else 127 props->max_map_per_fmr = 128 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1; 129 130 err = 0; 131 out: 132 kfree(in_mad); 133 kfree(out_mad); 134 return err; 135} 136 137static int mthca_query_port(struct ib_device *ibdev, 138 u8 port, struct ib_port_attr *props) 139{ 140 struct ib_smp *in_mad = NULL; 141 struct ib_smp *out_mad = NULL; 142 int err = -ENOMEM; 143 u8 status; 144 145 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 146 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 147 if (!in_mad || !out_mad) 148 goto out; 149 150 memset(props, 0, sizeof *props); 151 152 init_query_mad(in_mad); 153 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 154 in_mad->attr_mod = cpu_to_be32(port); 155 156 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 157 port, NULL, NULL, in_mad, out_mad, 158 &status); 159 if (err) 160 goto out; 161 if (status) { 162 err = -EINVAL; 163 goto out; 164 } 165 166 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 167 props->lmc = out_mad->data[34] & 0x7; 168 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 169 props->sm_sl = out_mad->data[36] & 0xf; 170 props->state = out_mad->data[32] & 0xf; 171 props->phys_state = out_mad->data[33] >> 4; 172 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 173 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len; 174 props->max_msg_sz = 0x80000000; 175 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len; 176 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 177 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 178 props->active_width = out_mad->data[31] & 0xf; 179 props->active_speed = out_mad->data[35] >> 4; 180 props->max_mtu = out_mad->data[41] & 0xf; 181 props->active_mtu = out_mad->data[36] >> 4; 182 props->subnet_timeout = out_mad->data[51] & 0x1f; 183 props->max_vl_num = out_mad->data[37] >> 4; 184 props->init_type_reply = out_mad->data[41] >> 4; 185 186 out: 187 kfree(in_mad); 188 kfree(out_mad); 189 return err; 190} 191 192static int mthca_modify_device(struct ib_device *ibdev, 193 int mask, 194 struct ib_device_modify *props) 195{ 196 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 197 return -EOPNOTSUPP; 198 199 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 200 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 201 return -ERESTARTSYS; 202 memcpy(ibdev->node_desc, props->node_desc, 64); 203 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 204 } 205 206 return 0; 207} 208 209static int mthca_modify_port(struct ib_device *ibdev, 210 u8 port, int port_modify_mask, 211 struct ib_port_modify *props) 212{ 213 struct mthca_set_ib_param set_ib; 214 struct ib_port_attr attr; 215 int err; 216 u8 status; 217 218 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex)) 219 return -ERESTARTSYS; 220 221 err = mthca_query_port(ibdev, port, &attr); 222 if (err) 223 goto out; 224 225 set_ib.set_si_guid = 0; 226 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR); 227 228 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 229 ~props->clr_port_cap_mask; 230 231 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status); 232 if (err) 233 goto out; 234 if (status) { 235 err = -EINVAL; 236 goto out; 237 } 238 239out: 240 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 241 return err; 242} 243 244static int mthca_query_pkey(struct ib_device *ibdev, 245 u8 port, u16 index, u16 *pkey) 246{ 247 struct ib_smp *in_mad = NULL; 248 struct ib_smp *out_mad = NULL; 249 int err = -ENOMEM; 250 u8 status; 251 252 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 253 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 254 if (!in_mad || !out_mad) 255 goto out; 256 257 init_query_mad(in_mad); 258 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 259 in_mad->attr_mod = cpu_to_be32(index / 32); 260 261 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 262 port, NULL, NULL, in_mad, out_mad, 263 &status); 264 if (err) 265 goto out; 266 if (status) { 267 err = -EINVAL; 268 goto out; 269 } 270 271 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 272 273 out: 274 kfree(in_mad); 275 kfree(out_mad); 276 return err; 277} 278 279static int mthca_query_gid(struct ib_device *ibdev, u8 port, 280 int index, union ib_gid *gid) 281{ 282 struct ib_smp *in_mad = NULL; 283 struct ib_smp *out_mad = NULL; 284 int err = -ENOMEM; 285 u8 status; 286 287 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 288 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 289 if (!in_mad || !out_mad) 290 goto out; 291 292 init_query_mad(in_mad); 293 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 294 in_mad->attr_mod = cpu_to_be32(port); 295 296 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 297 port, NULL, NULL, in_mad, out_mad, 298 &status); 299 if (err) 300 goto out; 301 if (status) { 302 err = -EINVAL; 303 goto out; 304 } 305 306 memcpy(gid->raw, out_mad->data + 8, 8); 307 308 init_query_mad(in_mad); 309 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 310 in_mad->attr_mod = cpu_to_be32(index / 8); 311 312 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 313 port, NULL, NULL, in_mad, out_mad, 314 &status); 315 if (err) 316 goto out; 317 if (status) { 318 err = -EINVAL; 319 goto out; 320 } 321 322 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 323 324 out: 325 kfree(in_mad); 326 kfree(out_mad); 327 return err; 328} 329 330static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev, 331 struct ib_udata *udata) 332{ 333 struct mthca_alloc_ucontext_resp uresp; 334 struct mthca_ucontext *context; 335 int err; 336 337 if (!(to_mdev(ibdev)->active)) 338 return ERR_PTR(-EAGAIN); 339 340 memset(&uresp, 0, sizeof uresp); 341 342 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps; 343 if (mthca_is_memfree(to_mdev(ibdev))) 344 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size; 345 else 346 uresp.uarc_size = 0; 347 348 context = kmalloc(sizeof *context, GFP_KERNEL); 349 if (!context) 350 return ERR_PTR(-ENOMEM); 351 352 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 353 if (err) { 354 kfree(context); 355 return ERR_PTR(err); 356 } 357 358 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 359 if (IS_ERR(context->db_tab)) { 360 err = PTR_ERR(context->db_tab); 361 mthca_uar_free(to_mdev(ibdev), &context->uar); 362 kfree(context); 363 return ERR_PTR(err); 364 } 365 366 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 367 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 368 mthca_uar_free(to_mdev(ibdev), &context->uar); 369 kfree(context); 370 return ERR_PTR(-EFAULT); 371 } 372 373 context->reg_mr_warned = 0; 374 375 return &context->ibucontext; 376} 377 378static int mthca_dealloc_ucontext(struct ib_ucontext *context) 379{ 380 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 381 to_mucontext(context)->db_tab); 382 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 383 kfree(to_mucontext(context)); 384 385 return 0; 386} 387 388static int mthca_mmap_uar(struct ib_ucontext *context, 389 struct vm_area_struct *vma) 390{ 391 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 392 return -EINVAL; 393 394 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 395 396 if (io_remap_pfn_range(vma, vma->vm_start, 397 to_mucontext(context)->uar.pfn, 398 PAGE_SIZE, vma->vm_page_prot)) 399 return -EAGAIN; 400 401 return 0; 402} 403 404static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev, 405 struct ib_ucontext *context, 406 struct ib_udata *udata) 407{ 408 struct mthca_pd *pd; 409 int err; 410 411 pd = kmalloc(sizeof *pd, GFP_KERNEL); 412 if (!pd) 413 return ERR_PTR(-ENOMEM); 414 415 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd); 416 if (err) { 417 kfree(pd); 418 return ERR_PTR(err); 419 } 420 421 if (context) { 422 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 423 mthca_pd_free(to_mdev(ibdev), pd); 424 kfree(pd); 425 return ERR_PTR(-EFAULT); 426 } 427 } 428 429 return &pd->ibpd; 430} 431 432static int mthca_dealloc_pd(struct ib_pd *pd) 433{ 434 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 435 kfree(pd); 436 437 return 0; 438} 439 440static struct ib_ah *mthca_ah_create(struct ib_pd *pd, 441 struct ib_ah_attr *ah_attr) 442{ 443 int err; 444 struct mthca_ah *ah; 445 446 ah = kmalloc(sizeof *ah, GFP_ATOMIC); 447 if (!ah) 448 return ERR_PTR(-ENOMEM); 449 450 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah); 451 if (err) { 452 kfree(ah); 453 return ERR_PTR(err); 454 } 455 456 return &ah->ibah; 457} 458 459static int mthca_ah_destroy(struct ib_ah *ah) 460{ 461 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 462 kfree(ah); 463 464 return 0; 465} 466 467static struct ib_srq *mthca_create_srq(struct ib_pd *pd, 468 struct ib_srq_init_attr *init_attr, 469 struct ib_udata *udata) 470{ 471 struct mthca_create_srq ucmd; 472 struct mthca_ucontext *context = NULL; 473 struct mthca_srq *srq; 474 int err; 475 476 srq = kmalloc(sizeof *srq, GFP_KERNEL); 477 if (!srq) 478 return ERR_PTR(-ENOMEM); 479 480 if (pd->uobject) { 481 context = to_mucontext(pd->uobject->context); 482 483 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 484 err = -EFAULT; 485 goto err_free; 486 } 487 488 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 489 context->db_tab, ucmd.db_index, 490 ucmd.db_page); 491 492 if (err) 493 goto err_free; 494 495 srq->mr.ibmr.lkey = ucmd.lkey; 496 srq->db_index = ucmd.db_index; 497 } 498 499 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd), 500 &init_attr->attr, srq); 501 502 if (err && pd->uobject) 503 mthca_unmap_user_db(to_mdev(pd->device), &context->uar, 504 context->db_tab, ucmd.db_index); 505 506 if (err) 507 goto err_free; 508 509 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) { 510 mthca_free_srq(to_mdev(pd->device), srq); 511 err = -EFAULT; 512 goto err_free; 513 } 514 515 return &srq->ibsrq; 516 517err_free: 518 kfree(srq); 519 520 return ERR_PTR(err); 521} 522 523static int mthca_destroy_srq(struct ib_srq *srq) 524{ 525 struct mthca_ucontext *context; 526 527 if (srq->uobject) { 528 context = to_mucontext(srq->uobject->context); 529 530 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 531 context->db_tab, to_msrq(srq)->db_index); 532 } 533 534 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 535 kfree(srq); 536 537 return 0; 538} 539 540static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 541 struct ib_qp_init_attr *init_attr, 542 struct ib_udata *udata) 543{ 544 struct mthca_create_qp ucmd; 545 struct mthca_qp *qp; 546 int err; 547 548 if (init_attr->create_flags) 549 return ERR_PTR(-EINVAL); 550 551 switch (init_attr->qp_type) { 552 case IB_QPT_RC: 553 case IB_QPT_UC: 554 case IB_QPT_UD: 555 { 556 struct mthca_ucontext *context; 557 558 qp = kmalloc(sizeof *qp, GFP_KERNEL); 559 if (!qp) 560 return ERR_PTR(-ENOMEM); 561 562 if (pd->uobject) { 563 context = to_mucontext(pd->uobject->context); 564 565 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 566 kfree(qp); 567 return ERR_PTR(-EFAULT); 568 } 569 570 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 571 context->db_tab, 572 ucmd.sq_db_index, ucmd.sq_db_page); 573 if (err) { 574 kfree(qp); 575 return ERR_PTR(err); 576 } 577 578 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 579 context->db_tab, 580 ucmd.rq_db_index, ucmd.rq_db_page); 581 if (err) { 582 mthca_unmap_user_db(to_mdev(pd->device), 583 &context->uar, 584 context->db_tab, 585 ucmd.sq_db_index); 586 kfree(qp); 587 return ERR_PTR(err); 588 } 589 590 qp->mr.ibmr.lkey = ucmd.lkey; 591 qp->sq.db_index = ucmd.sq_db_index; 592 qp->rq.db_index = ucmd.rq_db_index; 593 } 594 595 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 596 to_mcq(init_attr->send_cq), 597 to_mcq(init_attr->recv_cq), 598 init_attr->qp_type, init_attr->sq_sig_type, 599 &init_attr->cap, qp); 600 601 if (err && pd->uobject) { 602 context = to_mucontext(pd->uobject->context); 603 604 mthca_unmap_user_db(to_mdev(pd->device), 605 &context->uar, 606 context->db_tab, 607 ucmd.sq_db_index); 608 mthca_unmap_user_db(to_mdev(pd->device), 609 &context->uar, 610 context->db_tab, 611 ucmd.rq_db_index); 612 } 613 614 qp->ibqp.qp_num = qp->qpn; 615 break; 616 } 617 case IB_QPT_SMI: 618 case IB_QPT_GSI: 619 { 620 /* Don't allow userspace to create special QPs */ 621 if (pd->uobject) 622 return ERR_PTR(-EINVAL); 623 624 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL); 625 if (!qp) 626 return ERR_PTR(-ENOMEM); 627 628 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 629 630 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 631 to_mcq(init_attr->send_cq), 632 to_mcq(init_attr->recv_cq), 633 init_attr->sq_sig_type, &init_attr->cap, 634 qp->ibqp.qp_num, init_attr->port_num, 635 to_msqp(qp)); 636 break; 637 } 638 default: 639 /* Don't support raw QPs */ 640 return ERR_PTR(-ENOSYS); 641 } 642 643 if (err) { 644 kfree(qp); 645 return ERR_PTR(err); 646 } 647 648 init_attr->cap.max_send_wr = qp->sq.max; 649 init_attr->cap.max_recv_wr = qp->rq.max; 650 init_attr->cap.max_send_sge = qp->sq.max_gs; 651 init_attr->cap.max_recv_sge = qp->rq.max_gs; 652 init_attr->cap.max_inline_data = qp->max_inline_data; 653 654 return &qp->ibqp; 655} 656 657static int mthca_destroy_qp(struct ib_qp *qp) 658{ 659 if (qp->uobject) { 660 mthca_unmap_user_db(to_mdev(qp->device), 661 &to_mucontext(qp->uobject->context)->uar, 662 to_mucontext(qp->uobject->context)->db_tab, 663 to_mqp(qp)->sq.db_index); 664 mthca_unmap_user_db(to_mdev(qp->device), 665 &to_mucontext(qp->uobject->context)->uar, 666 to_mucontext(qp->uobject->context)->db_tab, 667 to_mqp(qp)->rq.db_index); 668 } 669 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 670 kfree(qp); 671 return 0; 672} 673 674static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries, 675 int comp_vector, 676 struct ib_ucontext *context, 677 struct ib_udata *udata) 678{ 679 struct mthca_create_cq ucmd; 680 struct mthca_cq *cq; 681 int nent; 682 int err; 683 684 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 685 return ERR_PTR(-EINVAL); 686 687 if (context) { 688 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 689 return ERR_PTR(-EFAULT); 690 691 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 692 to_mucontext(context)->db_tab, 693 ucmd.set_db_index, ucmd.set_db_page); 694 if (err) 695 return ERR_PTR(err); 696 697 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 698 to_mucontext(context)->db_tab, 699 ucmd.arm_db_index, ucmd.arm_db_page); 700 if (err) 701 goto err_unmap_set; 702 } 703 704 cq = kmalloc(sizeof *cq, GFP_KERNEL); 705 if (!cq) { 706 err = -ENOMEM; 707 goto err_unmap_arm; 708 } 709 710 if (context) { 711 cq->buf.mr.ibmr.lkey = ucmd.lkey; 712 cq->set_ci_db_index = ucmd.set_db_index; 713 cq->arm_db_index = ucmd.arm_db_index; 714 } 715 716 for (nent = 1; nent <= entries; nent <<= 1) 717 ; /* nothing */ 718 719 err = mthca_init_cq(to_mdev(ibdev), nent, 720 context ? to_mucontext(context) : NULL, 721 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 722 cq); 723 if (err) 724 goto err_free; 725 726 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) { 727 mthca_free_cq(to_mdev(ibdev), cq); 728 goto err_free; 729 } 730 731 cq->resize_buf = NULL; 732 733 return &cq->ibcq; 734 735err_free: 736 kfree(cq); 737 738err_unmap_arm: 739 if (context) 740 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 741 to_mucontext(context)->db_tab, ucmd.arm_db_index); 742 743err_unmap_set: 744 if (context) 745 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar, 746 to_mucontext(context)->db_tab, ucmd.set_db_index); 747 748 return ERR_PTR(err); 749} 750 751static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 752 int entries) 753{ 754 int ret; 755 756 spin_lock_irq(&cq->lock); 757 if (cq->resize_buf) { 758 ret = -EBUSY; 759 goto unlock; 760 } 761 762 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 763 if (!cq->resize_buf) { 764 ret = -ENOMEM; 765 goto unlock; 766 } 767 768 cq->resize_buf->state = CQ_RESIZE_ALLOC; 769 770 ret = 0; 771 772unlock: 773 spin_unlock_irq(&cq->lock); 774 775 if (ret) 776 return ret; 777 778 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 779 if (ret) { 780 spin_lock_irq(&cq->lock); 781 kfree(cq->resize_buf); 782 cq->resize_buf = NULL; 783 spin_unlock_irq(&cq->lock); 784 return ret; 785 } 786 787 cq->resize_buf->cqe = entries - 1; 788 789 spin_lock_irq(&cq->lock); 790 cq->resize_buf->state = CQ_RESIZE_READY; 791 spin_unlock_irq(&cq->lock); 792 793 return 0; 794} 795 796static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 797{ 798 struct mthca_dev *dev = to_mdev(ibcq->device); 799 struct mthca_cq *cq = to_mcq(ibcq); 800 struct mthca_resize_cq ucmd; 801 u32 lkey; 802 u8 status; 803 int ret; 804 805 if (entries < 1 || entries > dev->limits.max_cqes) 806 return -EINVAL; 807 808 mutex_lock(&cq->mutex); 809 810 entries = roundup_pow_of_two(entries + 1); 811 if (entries == ibcq->cqe + 1) { 812 ret = 0; 813 goto out; 814 } 815 816 if (cq->is_kernel) { 817 ret = mthca_alloc_resize_buf(dev, cq, entries); 818 if (ret) 819 goto out; 820 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 821 } else { 822 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 823 ret = -EFAULT; 824 goto out; 825 } 826 lkey = ucmd.lkey; 827 } 828 829 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status); 830 if (status) 831 ret = -EINVAL; 832 833 if (ret) { 834 if (cq->resize_buf) { 835 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 836 cq->resize_buf->cqe); 837 kfree(cq->resize_buf); 838 spin_lock_irq(&cq->lock); 839 cq->resize_buf = NULL; 840 spin_unlock_irq(&cq->lock); 841 } 842 goto out; 843 } 844 845 if (cq->is_kernel) { 846 struct mthca_cq_buf tbuf; 847 int tcqe; 848 849 spin_lock_irq(&cq->lock); 850 if (cq->resize_buf->state == CQ_RESIZE_READY) { 851 mthca_cq_resize_copy_cqes(cq); 852 tbuf = cq->buf; 853 tcqe = cq->ibcq.cqe; 854 cq->buf = cq->resize_buf->buf; 855 cq->ibcq.cqe = cq->resize_buf->cqe; 856 } else { 857 tbuf = cq->resize_buf->buf; 858 tcqe = cq->resize_buf->cqe; 859 } 860 861 kfree(cq->resize_buf); 862 cq->resize_buf = NULL; 863 spin_unlock_irq(&cq->lock); 864 865 mthca_free_cq_buf(dev, &tbuf, tcqe); 866 } else 867 ibcq->cqe = entries - 1; 868 869out: 870 mutex_unlock(&cq->mutex); 871 872 return ret; 873} 874 875static int mthca_destroy_cq(struct ib_cq *cq) 876{ 877 if (cq->uobject) { 878 mthca_unmap_user_db(to_mdev(cq->device), 879 &to_mucontext(cq->uobject->context)->uar, 880 to_mucontext(cq->uobject->context)->db_tab, 881 to_mcq(cq)->arm_db_index); 882 mthca_unmap_user_db(to_mdev(cq->device), 883 &to_mucontext(cq->uobject->context)->uar, 884 to_mucontext(cq->uobject->context)->db_tab, 885 to_mcq(cq)->set_ci_db_index); 886 } 887 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 888 kfree(cq); 889 890 return 0; 891} 892 893static inline u32 convert_access(int acc) 894{ 895 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 896 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 897 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 898 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 899 MTHCA_MPT_FLAG_LOCAL_READ; 900} 901 902static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 903{ 904 struct mthca_mr *mr; 905 int err; 906 907 mr = kmalloc(sizeof *mr, GFP_KERNEL); 908 if (!mr) 909 return ERR_PTR(-ENOMEM); 910 911 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 912 to_mpd(pd)->pd_num, 913 convert_access(acc), mr); 914 915 if (err) { 916 kfree(mr); 917 return ERR_PTR(err); 918 } 919 920 mr->umem = NULL; 921 922 return &mr->ibmr; 923} 924 925static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd, 926 struct ib_phys_buf *buffer_list, 927 int num_phys_buf, 928 int acc, 929 u64 *iova_start) 930{ 931 struct mthca_mr *mr; 932 u64 *page_list; 933 u64 total_size; 934 unsigned long mask; 935 int shift; 936 int npages; 937 int err; 938 int i, j, n; 939 940 mask = buffer_list[0].addr ^ *iova_start; 941 total_size = 0; 942 for (i = 0; i < num_phys_buf; ++i) { 943 if (i != 0) 944 mask |= buffer_list[i].addr; 945 if (i != num_phys_buf - 1) 946 mask |= buffer_list[i].addr + buffer_list[i].size; 947 948 total_size += buffer_list[i].size; 949 } 950 951 if (mask & ~PAGE_MASK) 952 return ERR_PTR(-EINVAL); 953 954 shift = __ffs(mask | 1 << 31); 955 956 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1); 957 buffer_list[0].addr &= ~0ull << shift; 958 959 mr = kmalloc(sizeof *mr, GFP_KERNEL); 960 if (!mr) 961 return ERR_PTR(-ENOMEM); 962 963 npages = 0; 964 for (i = 0; i < num_phys_buf; ++i) 965 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 966 967 if (!npages) 968 return &mr->ibmr; 969 970 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL); 971 if (!page_list) { 972 kfree(mr); 973 return ERR_PTR(-ENOMEM); 974 } 975 976 n = 0; 977 for (i = 0; i < num_phys_buf; ++i) 978 for (j = 0; 979 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift; 980 ++j) 981 page_list[n++] = buffer_list[i].addr + ((u64) j << shift); 982 983 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) " 984 "in PD %x; shift %d, npages %d.\n", 985 (unsigned long long) buffer_list[0].addr, 986 (unsigned long long) *iova_start, 987 to_mpd(pd)->pd_num, 988 shift, npages); 989 990 err = mthca_mr_alloc_phys(to_mdev(pd->device), 991 to_mpd(pd)->pd_num, 992 page_list, shift, npages, 993 *iova_start, total_size, 994 convert_access(acc), mr); 995 996 if (err) { 997 kfree(page_list); 998 kfree(mr); 999 return ERR_PTR(err); 1000 } 1001 1002 kfree(page_list); 1003 mr->umem = NULL; 1004 1005 return &mr->ibmr; 1006} 1007 1008static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 1009 u64 virt, 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 struct mthca_reg_mr ucmd; 1015 u64 *pages; 1016 int shift, n, len; 1017 int i, j, k; 1018 int err = 0; 1019 int write_mtt_size; 1020 1021 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) { 1022 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) { 1023 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n", 1024 curproc->p_comm); 1025 mthca_warn(dev, " Update libmthca to fix this.\n"); 1026 } 1027 ++to_mucontext(pd->uobject->context)->reg_mr_warned; 1028 ucmd.mr_attrs = 0; 1029 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 1030 return ERR_PTR(-EFAULT); 1031 1032 mr = kmalloc(sizeof *mr, GFP_KERNEL); 1033 if (!mr) 1034 return ERR_PTR(-ENOMEM); 1035 1036 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 1037 ucmd.mr_attrs & MTHCA_MR_DMASYNC); 1038 1039 if (IS_ERR(mr->umem)) { 1040 err = PTR_ERR(mr->umem); 1041 goto err; 1042 } 1043 1044 shift = ffs(mr->umem->page_size) - 1; 1045 1046 n = 0; 1047 list_for_each_entry(chunk, &mr->umem->chunk_list, list) 1048 n += chunk->nents; 1049 1050 mr->mtt = mthca_alloc_mtt(dev, n); 1051 if (IS_ERR(mr->mtt)) { 1052 err = PTR_ERR(mr->mtt); 1053 goto err_umem; 1054 } 1055 1056 pages = (u64 *) __get_free_page(GFP_KERNEL); 1057 if (!pages) { 1058 err = -ENOMEM; 1059 goto err_mtt; 1060 } 1061 1062 i = n = 0; 1063 1064 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 1065 1066 list_for_each_entry(chunk, &mr->umem->chunk_list, list) 1067 for (j = 0; j < chunk->nmap; ++j) { 1068 len = sg_dma_len(&chunk->page_list[j]) >> shift; 1069 for (k = 0; k < len; ++k) { 1070 pages[i++] = sg_dma_address(&chunk->page_list[j]) + 1071 mr->umem->page_size * k; 1072 /* 1073 * Be friendly to write_mtt and pass it chunks 1074 * of appropriate size. 1075 */ 1076 if (i == write_mtt_size) { 1077 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 1078 if (err) 1079 goto mtt_done; 1080 n += i; 1081 i = 0; 1082 } 1083 } 1084 } 1085 1086 if (i) 1087 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 1088mtt_done: 1089 free_page((unsigned long) pages); 1090 if (err) 1091 goto err_mtt; 1092 1093 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length, 1094 convert_access(acc), mr); 1095 1096 if (err) 1097 goto err_mtt; 1098 1099 return &mr->ibmr; 1100 1101err_mtt: 1102 mthca_free_mtt(dev, mr->mtt); 1103 1104err_umem: 1105 ib_umem_release(mr->umem); 1106 1107err: 1108 kfree(mr); 1109 return ERR_PTR(err); 1110} 1111 1112static int mthca_dereg_mr(struct ib_mr *mr) 1113{ 1114 struct mthca_mr *mmr = to_mmr(mr); 1115 1116 mthca_free_mr(to_mdev(mr->device), mmr); 1117 if (mmr->umem) 1118 ib_umem_release(mmr->umem); 1119 kfree(mmr); 1120 1121 return 0; 1122} 1123 1124static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 1125 struct ib_fmr_attr *fmr_attr) 1126{ 1127 struct mthca_fmr *fmr; 1128 int err; 1129 1130 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 1131 if (!fmr) 1132 return ERR_PTR(-ENOMEM); 1133 1134 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 1135 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 1136 convert_access(mr_access_flags), fmr); 1137 1138 if (err) { 1139 kfree(fmr); 1140 return ERR_PTR(err); 1141 } 1142 1143 return &fmr->ibmr; 1144} 1145 1146static int mthca_dealloc_fmr(struct ib_fmr *fmr) 1147{ 1148 struct mthca_fmr *mfmr = to_mfmr(fmr); 1149 int err; 1150 1151 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 1152 if (err) 1153 return err; 1154 1155 kfree(mfmr); 1156 return 0; 1157} 1158 1159static int mthca_unmap_fmr(struct list_head *fmr_list) 1160{ 1161 struct ib_fmr *fmr; 1162 int err; 1163 u8 status; 1164 struct mthca_dev *mdev = NULL; 1165 1166 list_for_each_entry(fmr, fmr_list, list) { 1167 if (mdev && to_mdev(fmr->device) != mdev) 1168 return -EINVAL; 1169 mdev = to_mdev(fmr->device); 1170 } 1171 1172 if (!mdev) 1173 return 0; 1174 1175 if (mthca_is_memfree(mdev)) { 1176 list_for_each_entry(fmr, fmr_list, list) 1177 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1178 1179 wmb(); 1180 } else 1181 list_for_each_entry(fmr, fmr_list, list) 1182 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1183 1184 err = mthca_SYNC_TPT(mdev, &status); 1185 if (err) 1186 return err; 1187 if (status) 1188 return -EINVAL; 1189 return 0; 1190} 1191 1192static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1193 char *buf) 1194{ 1195 struct mthca_dev *dev = 1196 container_of(device, struct mthca_dev, ib_dev.dev); 1197 return sprintf(buf, "%x\n", dev->rev_id); 1198} 1199 1200static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1201 char *buf) 1202{ 1203 struct mthca_dev *dev = 1204 container_of(device, struct mthca_dev, ib_dev.dev); 1205 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32), 1206 (int) (dev->fw_ver >> 16) & 0xffff, 1207 (int) dev->fw_ver & 0xffff); 1208} 1209 1210static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1211 char *buf) 1212{ 1213 struct mthca_dev *dev = 1214 container_of(device, struct mthca_dev, ib_dev.dev); 1215 switch (dev->pdev->device) { 1216 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1217 return sprintf(buf, "MT23108\n"); 1218 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1219 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1220 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1221 return sprintf(buf, "MT25208\n"); 1222 case PCI_DEVICE_ID_MELLANOX_SINAI: 1223 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1224 return sprintf(buf, "MT25204\n"); 1225 default: 1226 return sprintf(buf, "unknown\n"); 1227 } 1228} 1229 1230static ssize_t show_board(struct device *device, struct device_attribute *attr, 1231 char *buf) 1232{ 1233 struct mthca_dev *dev = 1234 container_of(device, struct mthca_dev, ib_dev.dev); 1235 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1236} 1237 1238static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1239static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1240static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1241static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1242 1243static struct device_attribute *mthca_dev_attributes[] = { 1244 &dev_attr_hw_rev, 1245 &dev_attr_fw_ver, 1246 &dev_attr_hca_type, 1247 &dev_attr_board_id 1248}; 1249 1250static int mthca_init_node_data(struct mthca_dev *dev) 1251{ 1252 struct ib_smp *in_mad = NULL; 1253 struct ib_smp *out_mad = NULL; 1254 int err = -ENOMEM; 1255 u8 status; 1256 1257 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1258 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1259 if (!in_mad || !out_mad) 1260 goto out; 1261 1262 init_query_mad(in_mad); 1263 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1264 1265 err = mthca_MAD_IFC(dev, 1, 1, 1266 1, NULL, NULL, in_mad, out_mad, 1267 &status); 1268 if (err) 1269 goto out; 1270 if (status) { 1271 err = -EINVAL; 1272 goto out; 1273 } 1274 1275 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1276 1277 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1278 1279 err = mthca_MAD_IFC(dev, 1, 1, 1280 1, NULL, NULL, in_mad, out_mad, 1281 &status); 1282 if (err) 1283 goto out; 1284 if (status) { 1285 err = -EINVAL; 1286 goto out; 1287 } 1288 1289 if (mthca_is_memfree(dev)) 1290 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1291 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1292 1293out: 1294 kfree(in_mad); 1295 kfree(out_mad); 1296 return err; 1297} 1298 1299int mthca_register_device(struct mthca_dev *dev) 1300{ 1301 int ret; 1302 int i; 1303 1304 ret = mthca_init_node_data(dev); 1305 if (ret) 1306 return ret; 1307 1308 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1309 dev->ib_dev.owner = THIS_MODULE; 1310 1311 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1312 dev->ib_dev.uverbs_cmd_mask = 1313 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1314 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1315 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1316 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1317 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1318 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1319 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1320 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1321 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1322 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1323 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1324 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1325 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1326 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1327 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1328 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1329 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1330 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1331 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1332 dev->ib_dev.num_comp_vectors = 1; 1333 dev->ib_dev.dma_device = &dev->pdev->dev; 1334 dev->ib_dev.query_device = mthca_query_device; 1335 dev->ib_dev.query_port = mthca_query_port; 1336 dev->ib_dev.modify_device = mthca_modify_device; 1337 dev->ib_dev.modify_port = mthca_modify_port; 1338 dev->ib_dev.query_pkey = mthca_query_pkey; 1339 dev->ib_dev.query_gid = mthca_query_gid; 1340 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1341 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1342 dev->ib_dev.mmap = mthca_mmap_uar; 1343 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1344 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1345 dev->ib_dev.create_ah = mthca_ah_create; 1346 dev->ib_dev.query_ah = mthca_ah_query; 1347 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1348 1349 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1350 dev->ib_dev.create_srq = mthca_create_srq; 1351 dev->ib_dev.modify_srq = mthca_modify_srq; 1352 dev->ib_dev.query_srq = mthca_query_srq; 1353 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1354 dev->ib_dev.uverbs_cmd_mask |= 1355 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1356 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1357 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1358 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1359 1360 if (mthca_is_memfree(dev)) 1361 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1362 else 1363 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1364 } 1365 1366 dev->ib_dev.create_qp = mthca_create_qp; 1367 dev->ib_dev.modify_qp = mthca_modify_qp; 1368 dev->ib_dev.query_qp = mthca_query_qp; 1369 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1370 dev->ib_dev.create_cq = mthca_create_cq; 1371 dev->ib_dev.resize_cq = mthca_resize_cq; 1372 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1373 dev->ib_dev.poll_cq = mthca_poll_cq; 1374 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1375 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr; 1376 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1377 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1378 1379 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1380 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1381 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1382 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1383 if (mthca_is_memfree(dev)) 1384 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1385 else 1386 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1387 } 1388 1389 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1390 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1391 dev->ib_dev.process_mad = mthca_process_mad; 1392 1393 if (mthca_is_memfree(dev)) { 1394 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1395 dev->ib_dev.post_send = mthca_arbel_post_send; 1396 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1397 } else { 1398 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1399 dev->ib_dev.post_send = mthca_tavor_post_send; 1400 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1401 } 1402 1403 mutex_init(&dev->cap_mask_mutex); 1404 1405 ret = ib_register_device(&dev->ib_dev); 1406 if (ret) 1407 return ret; 1408 1409 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) { 1410 ret = device_create_file(&dev->ib_dev.dev, 1411 mthca_dev_attributes[i]); 1412 if (ret) { 1413 ib_unregister_device(&dev->ib_dev); 1414 return ret; 1415 } 1416 } 1417 1418 mthca_start_catas_poll(dev); 1419 1420 return 0; 1421} 1422 1423void mthca_unregister_device(struct mthca_dev *dev) 1424{ 1425 mthca_stop_catas_poll(dev); 1426 ib_unregister_device(&dev->ib_dev); 1427} 1428