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sys/dev/mthca/mthca_provider.c
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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 #include <rdma/uverbs_ioctl.h> 41 42 #include <linux/sched.h> 43 #include <linux/slab.h> 44 #include <linux/mm.h> 45 #include <linux/fs.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 memset(props, 0, sizeof *props); 150 151 init_query_mad(in_mad); 152 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 153 in_mad->attr_mod = cpu_to_be32(port); 154 155 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1, 156 port, NULL, NULL, in_mad, out_mad); 157 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 = mthca_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 int mthca_alloc_ucontext(struct ib_ucontext *uctx, 303 struct ib_udata *udata) 304 { 305 struct ib_device *ibdev = uctx->device; 306 struct mthca_alloc_ucontext_resp uresp = {}; 307 struct mthca_ucontext *context = to_mucontext(uctx); 308 int err; 309 310 if (!(to_mdev(ibdev)->active)) 311 return -EAGAIN; 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 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); 320 if (err) 321 return err; 322 323 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev)); 324 if (IS_ERR(context->db_tab)) { 325 err = PTR_ERR(context->db_tab); 326 mthca_uar_free(to_mdev(ibdev), &context->uar); 327 return err; 328 } 329 330 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) { 331 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab); 332 mthca_uar_free(to_mdev(ibdev), &context->uar); 333 return -EFAULT; 334 } 335 336 context->reg_mr_warned = 0; 337 338 return 0; 339 } 340 341 static void mthca_dealloc_ucontext(struct ib_ucontext *context) 342 { 343 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar, 344 to_mucontext(context)->db_tab); 345 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar); 346 } 347 348 static int mthca_mmap_uar(struct ib_ucontext *context, 349 struct vm_area_struct *vma) 350 { 351 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 352 return -EINVAL; 353 354 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 355 356 if (io_remap_pfn_range(vma, vma->vm_start, 357 to_mucontext(context)->uar.pfn, 358 PAGE_SIZE, vma->vm_page_prot)) 359 return -EAGAIN; 360 361 return 0; 362 } 363 364 static int mthca_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 365 { 366 struct ib_device *ibdev = ibpd->device; 367 struct mthca_pd *pd = to_mpd(ibpd); 368 int err; 369 370 err = mthca_pd_alloc(to_mdev(ibdev), !udata, pd); 371 if (err) 372 return err; 373 374 if (udata) { 375 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { 376 mthca_pd_free(to_mdev(ibdev), pd); 377 return -EFAULT; 378 } 379 } 380 381 return 0; 382 } 383 384 static void mthca_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 385 { 386 mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); 387 } 388 389 static int mthca_ah_create(struct ib_ah *ibah, 390 struct ib_ah_attr *init_attr, u32 flags, 391 struct ib_udata *udata) 392 393 { 394 struct mthca_ah *ah = to_mah(ibah); 395 396 return mthca_create_ah(to_mdev(ibah->device), to_mpd(ibah->pd), 397 init_attr, ah); 398 } 399 400 static void mthca_ah_destroy(struct ib_ah *ah, u32 flags) 401 { 402 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); 403 } 404 405 static int mthca_create_srq(struct ib_srq *ibsrq, 406 struct ib_srq_init_attr *init_attr, 407 struct ib_udata *udata) 408 { 409 struct mthca_create_srq ucmd; 410 struct mthca_ucontext *context = rdma_udata_to_drv_context( 411 udata, struct mthca_ucontext, ibucontext); 412 struct mthca_srq *srq = to_msrq(ibsrq); 413 int err; 414 415 if (init_attr->srq_type != IB_SRQT_BASIC) 416 return -EOPNOTSUPP; 417 418 if (udata) { 419 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) 420 return -EFAULT; 421 422 err = mthca_map_user_db(to_mdev(ibsrq->device), &context->uar, 423 context->db_tab, ucmd.db_index, 424 ucmd.db_page); 425 426 if (err) 427 return err; 428 429 srq->mr.ibmr.lkey = ucmd.lkey; 430 srq->db_index = ucmd.db_index; 431 } 432 433 err = mthca_alloc_srq(to_mdev(ibsrq->device), to_mpd(ibsrq->pd), 434 &init_attr->attr, srq, udata); 435 436 if (err && udata) 437 mthca_unmap_user_db(to_mdev(ibsrq->device), &context->uar, 438 context->db_tab, ucmd.db_index); 439 440 if (err) 441 return err; 442 443 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof(__u32))) { 444 mthca_free_srq(to_mdev(ibsrq->device), srq); 445 return -EFAULT; 446 } 447 448 return 0; 449 } 450 451 static void mthca_destroy_srq(struct ib_srq *srq, struct ib_udata *udata) 452 { 453 if (udata) { 454 struct mthca_ucontext *context = 455 rdma_udata_to_drv_context( 456 udata, 457 struct mthca_ucontext, 458 ibucontext); 459 460 mthca_unmap_user_db(to_mdev(srq->device), &context->uar, 461 context->db_tab, to_msrq(srq)->db_index); 462 } 463 464 mthca_free_srq(to_mdev(srq->device), to_msrq(srq)); 465 } 466 467 static struct ib_qp *mthca_create_qp(struct ib_pd *pd, 468 struct ib_qp_init_attr *init_attr, 469 struct ib_udata *udata) 470 { 471 struct mthca_ucontext *context = rdma_udata_to_drv_context( 472 udata, struct mthca_ucontext, ibucontext); 473 struct mthca_create_qp ucmd; 474 struct mthca_qp *qp; 475 int err; 476 477 if (init_attr->create_flags) 478 return ERR_PTR(-EINVAL); 479 480 switch (init_attr->qp_type) { 481 case IB_QPT_RC: 482 case IB_QPT_UC: 483 case IB_QPT_UD: 484 { 485 qp = kzalloc(sizeof(*qp), GFP_KERNEL); 486 if (!qp) 487 return ERR_PTR(-ENOMEM); 488 489 if (udata) { 490 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 491 kfree(qp); 492 return ERR_PTR(-EFAULT); 493 } 494 495 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 496 context->db_tab, 497 ucmd.sq_db_index, ucmd.sq_db_page); 498 if (err) { 499 kfree(qp); 500 return ERR_PTR(err); 501 } 502 503 err = mthca_map_user_db(to_mdev(pd->device), &context->uar, 504 context->db_tab, 505 ucmd.rq_db_index, ucmd.rq_db_page); 506 if (err) { 507 mthca_unmap_user_db(to_mdev(pd->device), 508 &context->uar, 509 context->db_tab, 510 ucmd.sq_db_index); 511 kfree(qp); 512 return ERR_PTR(err); 513 } 514 515 qp->mr.ibmr.lkey = ucmd.lkey; 516 qp->sq.db_index = ucmd.sq_db_index; 517 qp->rq.db_index = ucmd.rq_db_index; 518 } 519 520 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd), 521 to_mcq(init_attr->send_cq), 522 to_mcq(init_attr->recv_cq), 523 init_attr->qp_type, init_attr->sq_sig_type, 524 &init_attr->cap, qp, udata); 525 526 if (err && udata) { 527 mthca_unmap_user_db(to_mdev(pd->device), 528 &context->uar, 529 context->db_tab, 530 ucmd.sq_db_index); 531 mthca_unmap_user_db(to_mdev(pd->device), 532 &context->uar, 533 context->db_tab, 534 ucmd.rq_db_index); 535 } 536 537 qp->ibqp.qp_num = qp->qpn; 538 break; 539 } 540 case IB_QPT_SMI: 541 case IB_QPT_GSI: 542 { 543 qp = kzalloc(sizeof(*qp), GFP_KERNEL); 544 if (!qp) 545 return ERR_PTR(-ENOMEM); 546 547 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1; 548 549 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd), 550 to_mcq(init_attr->send_cq), 551 to_mcq(init_attr->recv_cq), 552 init_attr->sq_sig_type, &init_attr->cap, 553 qp->ibqp.qp_num, init_attr->port_num, 554 to_msqp(qp), udata); 555 break; 556 } 557 default: 558 /* Don't support raw QPs */ 559 return ERR_PTR(-ENOSYS); 560 } 561 562 if (err) { 563 kfree(qp); 564 return ERR_PTR(err); 565 } 566 567 init_attr->cap.max_send_wr = qp->sq.max; 568 init_attr->cap.max_recv_wr = qp->rq.max; 569 init_attr->cap.max_send_sge = qp->sq.max_gs; 570 init_attr->cap.max_recv_sge = qp->rq.max_gs; 571 init_attr->cap.max_inline_data = qp->max_inline_data; 572 573 return &qp->ibqp; 574 } 575 576 static int mthca_destroy_qp(struct ib_qp *qp, struct ib_udata *udata) 577 { 578 if (udata) { 579 struct mthca_ucontext *context = 580 rdma_udata_to_drv_context( 581 udata, 582 struct mthca_ucontext, 583 ibucontext); 584 585 mthca_unmap_user_db(to_mdev(qp->device), 586 &context->uar, 587 context->db_tab, 588 to_mqp(qp)->sq.db_index); 589 mthca_unmap_user_db(to_mdev(qp->device), 590 &context->uar, 591 context->db_tab, 592 to_mqp(qp)->rq.db_index); 593 } 594 mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); 595 kfree(to_mqp(qp)); 596 return 0; 597 } 598 599 static int mthca_create_cq(struct ib_cq *ibcq, 600 const struct ib_cq_init_attr *attr, 601 struct ib_udata *udata) 602 { 603 struct ib_device *ibdev = ibcq->device; 604 int entries = attr->cqe; 605 struct mthca_create_cq ucmd; 606 struct mthca_cq *cq; 607 int nent; 608 int err; 609 struct mthca_ucontext *context = rdma_udata_to_drv_context( 610 udata, struct mthca_ucontext, ibucontext); 611 612 if (attr->flags) 613 return -EOPNOTSUPP; 614 615 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) 616 return -EINVAL; 617 618 if (udata) { 619 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) 620 return -EFAULT; 621 622 err = mthca_map_user_db(to_mdev(ibdev), &context->uar, 623 context->db_tab, ucmd.set_db_index, 624 ucmd.set_db_page); 625 if (err) 626 return err; 627 628 err = mthca_map_user_db(to_mdev(ibdev), &context->uar, 629 context->db_tab, ucmd.arm_db_index, 630 ucmd.arm_db_page); 631 if (err) 632 goto err_unmap_set; 633 } 634 635 cq = to_mcq(ibcq); 636 637 if (udata) { 638 cq->buf.mr.ibmr.lkey = ucmd.lkey; 639 cq->set_ci_db_index = ucmd.set_db_index; 640 cq->arm_db_index = ucmd.arm_db_index; 641 } 642 643 for (nent = 1; nent <= entries; nent <<= 1) 644 ; /* nothing */ 645 646 err = mthca_init_cq(to_mdev(ibdev), nent, context, 647 udata ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, 648 cq); 649 if (err) 650 goto err_unmap_arm; 651 652 if (udata && ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) { 653 mthca_free_cq(to_mdev(ibdev), cq); 654 err = -EFAULT; 655 goto err_unmap_arm; 656 } 657 658 cq->resize_buf = NULL; 659 660 return 0; 661 662 err_unmap_arm: 663 if (udata) 664 mthca_unmap_user_db(to_mdev(ibdev), &context->uar, 665 context->db_tab, ucmd.arm_db_index); 666 667 err_unmap_set: 668 if (udata) 669 mthca_unmap_user_db(to_mdev(ibdev), &context->uar, 670 context->db_tab, ucmd.set_db_index); 671 672 return err; 673 } 674 675 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq, 676 int entries) 677 { 678 int ret; 679 680 spin_lock_irq(&cq->lock); 681 if (cq->resize_buf) { 682 ret = -EBUSY; 683 goto unlock; 684 } 685 686 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC); 687 if (!cq->resize_buf) { 688 ret = -ENOMEM; 689 goto unlock; 690 } 691 692 cq->resize_buf->state = CQ_RESIZE_ALLOC; 693 694 ret = 0; 695 696 unlock: 697 spin_unlock_irq(&cq->lock); 698 699 if (ret) 700 return ret; 701 702 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 703 if (ret) { 704 spin_lock_irq(&cq->lock); 705 kfree(cq->resize_buf); 706 cq->resize_buf = NULL; 707 spin_unlock_irq(&cq->lock); 708 return ret; 709 } 710 711 cq->resize_buf->cqe = entries - 1; 712 713 spin_lock_irq(&cq->lock); 714 cq->resize_buf->state = CQ_RESIZE_READY; 715 spin_unlock_irq(&cq->lock); 716 717 return 0; 718 } 719 720 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 721 { 722 struct mthca_dev *dev = to_mdev(ibcq->device); 723 struct mthca_cq *cq = to_mcq(ibcq); 724 struct mthca_resize_cq ucmd; 725 u32 lkey; 726 int ret; 727 728 if (entries < 1 || entries > dev->limits.max_cqes) 729 return -EINVAL; 730 731 mutex_lock(&cq->mutex); 732 733 entries = roundup_pow_of_two(entries + 1); 734 if (entries == ibcq->cqe + 1) { 735 ret = 0; 736 goto out; 737 } 738 739 if (cq->is_kernel) { 740 ret = mthca_alloc_resize_buf(dev, cq, entries); 741 if (ret) 742 goto out; 743 lkey = cq->resize_buf->buf.mr.ibmr.lkey; 744 } else { 745 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 746 ret = -EFAULT; 747 goto out; 748 } 749 lkey = ucmd.lkey; 750 } 751 752 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries)); 753 754 if (ret) { 755 if (cq->resize_buf) { 756 mthca_free_cq_buf(dev, &cq->resize_buf->buf, 757 cq->resize_buf->cqe); 758 kfree(cq->resize_buf); 759 spin_lock_irq(&cq->lock); 760 cq->resize_buf = NULL; 761 spin_unlock_irq(&cq->lock); 762 } 763 goto out; 764 } 765 766 if (cq->is_kernel) { 767 struct mthca_cq_buf tbuf; 768 int tcqe; 769 770 spin_lock_irq(&cq->lock); 771 if (cq->resize_buf->state == CQ_RESIZE_READY) { 772 mthca_cq_resize_copy_cqes(cq); 773 tbuf = cq->buf; 774 tcqe = cq->ibcq.cqe; 775 cq->buf = cq->resize_buf->buf; 776 cq->ibcq.cqe = cq->resize_buf->cqe; 777 } else { 778 tbuf = cq->resize_buf->buf; 779 tcqe = cq->resize_buf->cqe; 780 } 781 782 kfree(cq->resize_buf); 783 cq->resize_buf = NULL; 784 spin_unlock_irq(&cq->lock); 785 786 mthca_free_cq_buf(dev, &tbuf, tcqe); 787 } else 788 ibcq->cqe = entries - 1; 789 790 out: 791 mutex_unlock(&cq->mutex); 792 793 return ret; 794 } 795 796 static void mthca_destroy_cq(struct ib_cq *cq, struct ib_udata *udata) 797 { 798 if (udata) { 799 struct mthca_ucontext *context = 800 rdma_udata_to_drv_context( 801 udata, 802 struct mthca_ucontext, 803 ibucontext); 804 805 mthca_unmap_user_db(to_mdev(cq->device), 806 &context->uar, 807 context->db_tab, 808 to_mcq(cq)->arm_db_index); 809 mthca_unmap_user_db(to_mdev(cq->device), 810 &context->uar, 811 context->db_tab, 812 to_mcq(cq)->set_ci_db_index); 813 } 814 mthca_free_cq(to_mdev(cq->device), to_mcq(cq)); 815 } 816 817 static inline u32 convert_access(int acc) 818 { 819 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) | 820 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) | 821 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) | 822 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) | 823 MTHCA_MPT_FLAG_LOCAL_READ; 824 } 825 826 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc) 827 { 828 struct mthca_mr *mr; 829 int err; 830 831 mr = kmalloc(sizeof *mr, GFP_KERNEL); 832 if (!mr) 833 return ERR_PTR(-ENOMEM); 834 835 err = mthca_mr_alloc_notrans(to_mdev(pd->device), 836 to_mpd(pd)->pd_num, 837 convert_access(acc), mr); 838 839 if (err) { 840 kfree(mr); 841 return ERR_PTR(err); 842 } 843 844 mr->umem = NULL; 845 846 return &mr->ibmr; 847 } 848 849 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 850 u64 virt, int acc, struct ib_udata *udata) 851 { 852 struct mthca_dev *dev = to_mdev(pd->device); 853 struct scatterlist *sg; 854 struct mthca_mr *mr; 855 struct mthca_reg_mr ucmd; 856 u64 *pages; 857 int shift, n, len; 858 int i, k, entry; 859 int err = 0; 860 int write_mtt_size; 861 862 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) { 863 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) { 864 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n", 865 current->comm); 866 mthca_warn(dev, " Update libmthca to fix this.\n"); 867 } 868 ++to_mucontext(pd->uobject->context)->reg_mr_warned; 869 ucmd.mr_attrs = 0; 870 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 871 return ERR_PTR(-EFAULT); 872 873 mr = kmalloc(sizeof *mr, GFP_KERNEL); 874 if (!mr) 875 return ERR_PTR(-ENOMEM); 876 877 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 878 ucmd.mr_attrs & MTHCA_MR_DMASYNC); 879 880 if (IS_ERR(mr->umem)) { 881 err = PTR_ERR(mr->umem); 882 goto err; 883 } 884 885 shift = ffs(mr->umem->page_size) - 1; 886 n = mr->umem->nmap; 887 888 mr->mtt = mthca_alloc_mtt(dev, n); 889 if (IS_ERR(mr->mtt)) { 890 err = PTR_ERR(mr->mtt); 891 goto err_umem; 892 } 893 894 pages = (u64 *) __get_free_page(GFP_KERNEL); 895 if (!pages) { 896 err = -ENOMEM; 897 goto err_mtt; 898 } 899 900 i = n = 0; 901 902 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages)); 903 904 for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) { 905 len = sg_dma_len(sg) >> shift; 906 for (k = 0; k < len; ++k) { 907 pages[i++] = sg_dma_address(sg) + 908 mr->umem->page_size * k; 909 /* 910 * Be friendly to write_mtt and pass it chunks 911 * of appropriate size. 912 */ 913 if (i == write_mtt_size) { 914 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 915 if (err) 916 goto mtt_done; 917 n += i; 918 i = 0; 919 } 920 } 921 } 922 923 if (i) 924 err = mthca_write_mtt(dev, mr->mtt, n, pages, i); 925 mtt_done: 926 free_page((unsigned long) pages); 927 if (err) 928 goto err_mtt; 929 930 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length, 931 convert_access(acc), mr); 932 933 if (err) 934 goto err_mtt; 935 936 return &mr->ibmr; 937 938 err_mtt: 939 mthca_free_mtt(dev, mr->mtt); 940 941 err_umem: 942 ib_umem_release(mr->umem); 943 944 err: 945 kfree(mr); 946 return ERR_PTR(err); 947 } 948 949 static int mthca_dereg_mr(struct ib_mr *mr, struct ib_udata *udata) 950 { 951 struct mthca_mr *mmr = to_mmr(mr); 952 953 mthca_free_mr(to_mdev(mr->device), mmr); 954 ib_umem_release(mmr->umem); 955 kfree(mmr); 956 957 return 0; 958 } 959 960 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags, 961 struct ib_fmr_attr *fmr_attr) 962 { 963 struct mthca_fmr *fmr; 964 int err; 965 966 fmr = kmalloc(sizeof *fmr, GFP_KERNEL); 967 if (!fmr) 968 return ERR_PTR(-ENOMEM); 969 970 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr); 971 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num, 972 convert_access(mr_access_flags), fmr); 973 974 if (err) { 975 kfree(fmr); 976 return ERR_PTR(err); 977 } 978 979 return &fmr->ibmr; 980 } 981 982 static int mthca_dealloc_fmr(struct ib_fmr *fmr) 983 { 984 struct mthca_fmr *mfmr = to_mfmr(fmr); 985 int err; 986 987 err = mthca_free_fmr(to_mdev(fmr->device), mfmr); 988 if (err) 989 return err; 990 991 kfree(mfmr); 992 return 0; 993 } 994 995 static int mthca_unmap_fmr(struct list_head *fmr_list) 996 { 997 struct ib_fmr *fmr; 998 int err; 999 struct mthca_dev *mdev = NULL; 1000 1001 list_for_each_entry(fmr, fmr_list, list) { 1002 if (mdev && to_mdev(fmr->device) != mdev) 1003 return -EINVAL; 1004 mdev = to_mdev(fmr->device); 1005 } 1006 1007 if (!mdev) 1008 return 0; 1009 1010 if (mthca_is_memfree(mdev)) { 1011 list_for_each_entry(fmr, fmr_list, list) 1012 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr)); 1013 1014 wmb(); 1015 } else 1016 list_for_each_entry(fmr, fmr_list, list) 1017 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr)); 1018 1019 err = mthca_SYNC_TPT(mdev); 1020 return err; 1021 } 1022 1023 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1024 char *buf) 1025 { 1026 struct mthca_dev *dev = 1027 container_of(device, struct mthca_dev, ib_dev.dev); 1028 return sprintf(buf, "%x\n", dev->rev_id); 1029 } 1030 1031 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1032 char *buf) 1033 { 1034 struct mthca_dev *dev = 1035 container_of(device, struct mthca_dev, ib_dev.dev); 1036 switch (dev->pdev->device) { 1037 case PCI_DEVICE_ID_MELLANOX_TAVOR: 1038 return sprintf(buf, "MT23108\n"); 1039 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: 1040 return sprintf(buf, "MT25208 (MT23108 compat mode)\n"); 1041 case PCI_DEVICE_ID_MELLANOX_ARBEL: 1042 return sprintf(buf, "MT25208\n"); 1043 case PCI_DEVICE_ID_MELLANOX_SINAI: 1044 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: 1045 return sprintf(buf, "MT25204\n"); 1046 default: 1047 return sprintf(buf, "unknown\n"); 1048 } 1049 } 1050 1051 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1052 char *buf) 1053 { 1054 struct mthca_dev *dev = 1055 container_of(device, struct mthca_dev, ib_dev.dev); 1056 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); 1057 } 1058 1059 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1060 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1061 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1062 1063 static struct device_attribute *mthca_dev_attributes[] = { 1064 &dev_attr_hw_rev, 1065 &dev_attr_hca_type, 1066 &dev_attr_board_id 1067 }; 1068 1069 static int mthca_init_node_data(struct mthca_dev *dev) 1070 { 1071 struct ib_smp *in_mad = NULL; 1072 struct ib_smp *out_mad = NULL; 1073 int err = -ENOMEM; 1074 1075 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1076 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1077 if (!in_mad || !out_mad) 1078 goto out; 1079 1080 init_query_mad(in_mad); 1081 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1082 1083 err = mthca_MAD_IFC(dev, 1, 1, 1084 1, NULL, NULL, in_mad, out_mad); 1085 if (err) 1086 goto out; 1087 1088 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 1089 1090 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1091 1092 err = mthca_MAD_IFC(dev, 1, 1, 1093 1, NULL, NULL, in_mad, out_mad); 1094 if (err) 1095 goto out; 1096 1097 if (mthca_is_memfree(dev)) 1098 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1099 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1100 1101 out: 1102 kfree(in_mad); 1103 kfree(out_mad); 1104 return err; 1105 } 1106 1107 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num, 1108 struct ib_port_immutable *immutable) 1109 { 1110 struct ib_port_attr attr; 1111 int err; 1112 1113 err = mthca_query_port(ibdev, port_num, &attr); 1114 if (err) 1115 return err; 1116 1117 immutable->pkey_tbl_len = attr.pkey_tbl_len; 1118 immutable->gid_tbl_len = attr.gid_tbl_len; 1119 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 1120 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 1121 1122 return 0; 1123 } 1124 1125 static void get_dev_fw_str(struct ib_device *device, char *str, 1126 size_t str_len) 1127 { 1128 struct mthca_dev *dev = 1129 container_of(device, struct mthca_dev, ib_dev); 1130 snprintf(str, str_len, "%d.%d.%d", 1131 (int) (dev->fw_ver >> 32), 1132 (int) (dev->fw_ver >> 16) & 0xffff, 1133 (int) dev->fw_ver & 0xffff); 1134 } 1135 1136 int mthca_register_device(struct mthca_dev *dev) 1137 { 1138 int ret; 1139 int i; 1140 1141 ret = mthca_init_node_data(dev); 1142 if (ret) 1143 return ret; 1144 1145 #define mthca_ib_ah mthca_ah 1146 #define mthca_ib_cq mthca_cq 1147 #define mthca_ib_pd mthca_pd 1148 #define mthca_ib_qp mthca_qp 1149 #define mthca_ib_srq mthca_srq 1150 #define mthca_ib_ucontext mthca_ucontext 1151 INIT_IB_DEVICE_OPS(&dev->ib_dev.ops, mthca, MTHCA); 1152 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); 1153 dev->ib_dev.owner = THIS_MODULE; 1154 1155 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; 1156 dev->ib_dev.uverbs_cmd_mask = 1157 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1158 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1159 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1160 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1161 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1162 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1163 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1164 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1165 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1166 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1167 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1168 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1169 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1170 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1171 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1172 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1173 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); 1174 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1175 dev->ib_dev.phys_port_cnt = dev->limits.num_ports; 1176 dev->ib_dev.num_comp_vectors = 1; 1177 dev->ib_dev.dma_device = &dev->pdev->dev; 1178 dev->ib_dev.query_device = mthca_query_device; 1179 dev->ib_dev.query_port = mthca_query_port; 1180 dev->ib_dev.modify_device = mthca_modify_device; 1181 dev->ib_dev.modify_port = mthca_modify_port; 1182 dev->ib_dev.query_pkey = mthca_query_pkey; 1183 dev->ib_dev.query_gid = mthca_query_gid; 1184 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext; 1185 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext; 1186 dev->ib_dev.mmap = mthca_mmap_uar; 1187 dev->ib_dev.alloc_pd = mthca_alloc_pd; 1188 dev->ib_dev.dealloc_pd = mthca_dealloc_pd; 1189 dev->ib_dev.create_ah = mthca_ah_create; 1190 dev->ib_dev.query_ah = mthca_ah_query; 1191 dev->ib_dev.destroy_ah = mthca_ah_destroy; 1192 1193 if (dev->mthca_flags & MTHCA_FLAG_SRQ) { 1194 dev->ib_dev.create_srq = mthca_create_srq; 1195 dev->ib_dev.modify_srq = mthca_modify_srq; 1196 dev->ib_dev.query_srq = mthca_query_srq; 1197 dev->ib_dev.destroy_srq = mthca_destroy_srq; 1198 dev->ib_dev.uverbs_cmd_mask |= 1199 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1200 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1201 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1202 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); 1203 1204 if (mthca_is_memfree(dev)) 1205 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv; 1206 else 1207 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv; 1208 } 1209 1210 dev->ib_dev.create_qp = mthca_create_qp; 1211 dev->ib_dev.modify_qp = mthca_modify_qp; 1212 dev->ib_dev.query_qp = mthca_query_qp; 1213 dev->ib_dev.destroy_qp = mthca_destroy_qp; 1214 dev->ib_dev.create_cq = mthca_create_cq; 1215 dev->ib_dev.resize_cq = mthca_resize_cq; 1216 dev->ib_dev.destroy_cq = mthca_destroy_cq; 1217 dev->ib_dev.poll_cq = mthca_poll_cq; 1218 dev->ib_dev.get_dma_mr = mthca_get_dma_mr; 1219 dev->ib_dev.reg_user_mr = mthca_reg_user_mr; 1220 dev->ib_dev.dereg_mr = mthca_dereg_mr; 1221 dev->ib_dev.get_port_immutable = mthca_port_immutable; 1222 dev->ib_dev.get_dev_fw_str = get_dev_fw_str; 1223 1224 if (dev->mthca_flags & MTHCA_FLAG_FMR) { 1225 dev->ib_dev.alloc_fmr = mthca_alloc_fmr; 1226 dev->ib_dev.unmap_fmr = mthca_unmap_fmr; 1227 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr; 1228 if (mthca_is_memfree(dev)) 1229 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr; 1230 else 1231 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr; 1232 } 1233 1234 dev->ib_dev.attach_mcast = mthca_multicast_attach; 1235 dev->ib_dev.detach_mcast = mthca_multicast_detach; 1236 dev->ib_dev.process_mad = mthca_process_mad; 1237 1238 if (mthca_is_memfree(dev)) { 1239 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq; 1240 dev->ib_dev.post_send = mthca_arbel_post_send; 1241 dev->ib_dev.post_recv = mthca_arbel_post_receive; 1242 } else { 1243 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq; 1244 dev->ib_dev.post_send = mthca_tavor_post_send; 1245 dev->ib_dev.post_recv = mthca_tavor_post_receive; 1246 } 1247 1248 mutex_init(&dev->cap_mask_mutex); 1249 1250 ret = ib_register_device(&dev->ib_dev, NULL); 1251 if (ret) 1252 return ret; 1253 1254 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) { 1255 ret = device_create_file(&dev->ib_dev.dev, 1256 mthca_dev_attributes[i]); 1257 if (ret) { 1258 ib_unregister_device(&dev->ib_dev); 1259 return ret; 1260 } 1261 } 1262 1263 mthca_start_catas_poll(dev); 1264 1265 return 0; 1266 } 1267 1268 void mthca_unregister_device(struct mthca_dev *dev) 1269 { 1270 mthca_stop_catas_poll(dev); 1271 ib_unregister_device(&dev->ib_dev); 1272 }
Cache object: d3dd848021223e81773ff9777a26cfb9
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