1 /* 2 * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <asm-generic/kmap_types.h> 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/errno.h> 37 #include <linux/pci.h> 38 #include <linux/dma-mapping.h> 39 #include <linux/slab.h> 40 #include <linux/io-mapping.h> 41 #include <linux/sched.h> 42 #include <rdma/ib_user_verbs.h> 43 #include <rdma/ib_smi.h> 44 #include <rdma/ib_umem.h> 45 #include "user.h" 46 #include "mlx5_ib.h" 47 48 #define DRIVER_NAME "mlx5_ib" 49 #define DRIVER_VERSION "1.0" 50 #define DRIVER_RELDATE "June 2013" 51 52 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>"); 53 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver"); 54 MODULE_LICENSE("Dual BSD/GPL"); 55 MODULE_VERSION(DRIVER_VERSION); 56 57 static int prof_sel = 2; 58 module_param_named(prof_sel, prof_sel, int, 0444); 59 MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2"); 60 61 static char mlx5_version[] = 62 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v" 63 DRIVER_VERSION " (" DRIVER_RELDATE ")\n"; 64 65 static struct mlx5_profile profile[] = { 66 [0] = { 67 .mask = 0, 68 }, 69 [1] = { 70 .mask = MLX5_PROF_MASK_QP_SIZE, 71 .log_max_qp = 12, 72 }, 73 [2] = { 74 .mask = MLX5_PROF_MASK_QP_SIZE | 75 MLX5_PROF_MASK_MR_CACHE, 76 .log_max_qp = 17, 77 .mr_cache[0] = { 78 .size = 500, 79 .limit = 250 80 }, 81 .mr_cache[1] = { 82 .size = 500, 83 .limit = 250 84 }, 85 .mr_cache[2] = { 86 .size = 500, 87 .limit = 250 88 }, 89 .mr_cache[3] = { 90 .size = 500, 91 .limit = 250 92 }, 93 .mr_cache[4] = { 94 .size = 500, 95 .limit = 250 96 }, 97 .mr_cache[5] = { 98 .size = 500, 99 .limit = 250 100 }, 101 .mr_cache[6] = { 102 .size = 500, 103 .limit = 250 104 }, 105 .mr_cache[7] = { 106 .size = 500, 107 .limit = 250 108 }, 109 .mr_cache[8] = { 110 .size = 500, 111 .limit = 250 112 }, 113 .mr_cache[9] = { 114 .size = 500, 115 .limit = 250 116 }, 117 .mr_cache[10] = { 118 .size = 500, 119 .limit = 250 120 }, 121 .mr_cache[11] = { 122 .size = 500, 123 .limit = 250 124 }, 125 .mr_cache[12] = { 126 .size = 64, 127 .limit = 32 128 }, 129 .mr_cache[13] = { 130 .size = 32, 131 .limit = 16 132 }, 133 .mr_cache[14] = { 134 .size = 16, 135 .limit = 8 136 }, 137 .mr_cache[15] = { 138 .size = 8, 139 .limit = 4 140 }, 141 }, 142 }; 143 144 int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn) 145 { 146 struct mlx5_eq_table *table = &dev->mdev.priv.eq_table; 147 struct mlx5_eq *eq, *n; 148 int err = -ENOENT; 149 150 spin_lock(&table->lock); 151 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) { 152 if (eq->index == vector) { 153 *eqn = eq->eqn; 154 *irqn = eq->irqn; 155 err = 0; 156 break; 157 } 158 } 159 spin_unlock(&table->lock); 160 161 return err; 162 } 163 164 static int alloc_comp_eqs(struct mlx5_ib_dev *dev) 165 { 166 struct mlx5_eq_table *table = &dev->mdev.priv.eq_table; 167 struct mlx5_eq *eq, *n; 168 int ncomp_vec; 169 int nent; 170 int err; 171 int i; 172 173 INIT_LIST_HEAD(&dev->eqs_list); 174 ncomp_vec = table->num_comp_vectors; 175 nent = MLX5_COMP_EQ_SIZE; 176 for (i = 0; i < ncomp_vec; i++) { 177 eq = kzalloc(sizeof(*eq), GFP_KERNEL); 178 if (!eq) { 179 err = -ENOMEM; 180 goto clean; 181 } 182 183 snprintf(eq->name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i); 184 err = mlx5_create_map_eq(&dev->mdev, eq, 185 i + MLX5_EQ_VEC_COMP_BASE, nent, 0, 186 eq->name, 187 &dev->mdev.priv.uuari.uars[0]); 188 if (err) { 189 kfree(eq); 190 goto clean; 191 } 192 mlx5_ib_dbg(dev, "allocated completion EQN %d\n", eq->eqn); 193 eq->index = i; 194 spin_lock(&table->lock); 195 list_add_tail(&eq->list, &dev->eqs_list); 196 spin_unlock(&table->lock); 197 } 198 199 dev->num_comp_vectors = ncomp_vec; 200 return 0; 201 202 clean: 203 spin_lock(&table->lock); 204 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) { 205 list_del(&eq->list); 206 spin_unlock(&table->lock); 207 if (mlx5_destroy_unmap_eq(&dev->mdev, eq)) 208 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn); 209 kfree(eq); 210 spin_lock(&table->lock); 211 } 212 spin_unlock(&table->lock); 213 return err; 214 } 215 216 static void free_comp_eqs(struct mlx5_ib_dev *dev) 217 { 218 struct mlx5_eq_table *table = &dev->mdev.priv.eq_table; 219 struct mlx5_eq *eq, *n; 220 221 spin_lock(&table->lock); 222 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) { 223 list_del(&eq->list); 224 spin_unlock(&table->lock); 225 if (mlx5_destroy_unmap_eq(&dev->mdev, eq)) 226 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn); 227 kfree(eq); 228 spin_lock(&table->lock); 229 } 230 spin_unlock(&table->lock); 231 } 232 233 static int mlx5_ib_query_device(struct ib_device *ibdev, 234 struct ib_device_attr *props) 235 { 236 struct mlx5_ib_dev *dev = to_mdev(ibdev); 237 struct ib_smp *in_mad = NULL; 238 struct ib_smp *out_mad = NULL; 239 int err = -ENOMEM; 240 int max_rq_sg; 241 int max_sq_sg; 242 u64 flags; 243 244 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 245 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 246 if (!in_mad || !out_mad) 247 goto out; 248 249 init_query_mad(in_mad); 250 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 251 252 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); 253 if (err) 254 goto out; 255 256 memset(props, 0, sizeof(*props)); 257 258 props->fw_ver = ((u64)fw_rev_maj(&dev->mdev) << 32) | 259 (fw_rev_min(&dev->mdev) << 16) | 260 fw_rev_sub(&dev->mdev); 261 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 262 IB_DEVICE_PORT_ACTIVE_EVENT | 263 IB_DEVICE_SYS_IMAGE_GUID | 264 IB_DEVICE_RC_RNR_NAK_GEN | 265 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 266 flags = dev->mdev.caps.flags; 267 if (flags & MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR) 268 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 269 if (flags & MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR) 270 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 271 if (flags & MLX5_DEV_CAP_FLAG_APM) 272 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 273 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 274 if (flags & MLX5_DEV_CAP_FLAG_XRC) 275 props->device_cap_flags |= IB_DEVICE_XRC; 276 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 277 278 props->vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 279 0xffffff; 280 props->vendor_part_id = be16_to_cpup((__be16 *)(out_mad->data + 30)); 281 props->hw_ver = be32_to_cpup((__be32 *)(out_mad->data + 32)); 282 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 283 284 props->max_mr_size = ~0ull; 285 props->page_size_cap = dev->mdev.caps.min_page_sz; 286 props->max_qp = 1 << dev->mdev.caps.log_max_qp; 287 props->max_qp_wr = dev->mdev.caps.max_wqes; 288 max_rq_sg = dev->mdev.caps.max_rq_desc_sz / sizeof(struct mlx5_wqe_data_seg); 289 max_sq_sg = (dev->mdev.caps.max_sq_desc_sz - sizeof(struct mlx5_wqe_ctrl_seg)) / 290 sizeof(struct mlx5_wqe_data_seg); 291 props->max_sge = min(max_rq_sg, max_sq_sg); 292 props->max_cq = 1 << dev->mdev.caps.log_max_cq; 293 props->max_cqe = dev->mdev.caps.max_cqes - 1; 294 props->max_mr = 1 << dev->mdev.caps.log_max_mkey; 295 props->max_pd = 1 << dev->mdev.caps.log_max_pd; 296 props->max_qp_rd_atom = dev->mdev.caps.max_ra_req_qp; 297 props->max_qp_init_rd_atom = dev->mdev.caps.max_ra_res_qp; 298 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 299 props->max_srq = 1 << dev->mdev.caps.log_max_srq; 300 props->max_srq_wr = dev->mdev.caps.max_srq_wqes - 1; 301 props->max_srq_sge = max_rq_sg - 1; 302 props->max_fast_reg_page_list_len = (unsigned int)-1; 303 props->local_ca_ack_delay = dev->mdev.caps.local_ca_ack_delay; 304 props->atomic_cap = dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_ATOMIC ? 305 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 306 props->masked_atomic_cap = IB_ATOMIC_HCA; 307 props->max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28)); 308 props->max_mcast_grp = 1 << dev->mdev.caps.log_max_mcg; 309 props->max_mcast_qp_attach = dev->mdev.caps.max_qp_mcg; 310 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 311 props->max_mcast_grp; 312 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */ 313 314 out: 315 kfree(in_mad); 316 kfree(out_mad); 317 318 return err; 319 } 320 321 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port, 322 struct ib_port_attr *props) 323 { 324 struct mlx5_ib_dev *dev = to_mdev(ibdev); 325 struct ib_smp *in_mad = NULL; 326 struct ib_smp *out_mad = NULL; 327 int ext_active_speed; 328 int err = -ENOMEM; 329 330 if (port < 1 || port > dev->mdev.caps.num_ports) { 331 mlx5_ib_warn(dev, "invalid port number %d\n", port); 332 return -EINVAL; 333 } 334 335 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 336 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 337 if (!in_mad || !out_mad) 338 goto out; 339 340 memset(props, 0, sizeof(*props)); 341 342 init_query_mad(in_mad); 343 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 344 in_mad->attr_mod = cpu_to_be32(port); 345 346 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 347 if (err) { 348 mlx5_ib_warn(dev, "err %d\n", err); 349 goto out; 350 } 351 352 353 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 354 props->lmc = out_mad->data[34] & 0x7; 355 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 356 props->sm_sl = out_mad->data[36] & 0xf; 357 props->state = out_mad->data[32] & 0xf; 358 props->phys_state = out_mad->data[33] >> 4; 359 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 360 props->gid_tbl_len = out_mad->data[50]; 361 props->max_msg_sz = 1 << to_mdev(ibdev)->mdev.caps.log_max_msg; 362 props->pkey_tbl_len = to_mdev(ibdev)->mdev.caps.port[port - 1].pkey_table_len; 363 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 364 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 365 props->active_width = out_mad->data[31] & 0xf; 366 props->active_speed = out_mad->data[35] >> 4; 367 props->max_mtu = out_mad->data[41] & 0xf; 368 props->active_mtu = out_mad->data[36] >> 4; 369 props->subnet_timeout = out_mad->data[51] & 0x1f; 370 props->max_vl_num = out_mad->data[37] >> 4; 371 props->init_type_reply = out_mad->data[41] >> 4; 372 373 /* Check if extended speeds (EDR/FDR/...) are supported */ 374 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 375 ext_active_speed = out_mad->data[62] >> 4; 376 377 switch (ext_active_speed) { 378 case 1: 379 props->active_speed = 16; /* FDR */ 380 break; 381 case 2: 382 props->active_speed = 32; /* EDR */ 383 break; 384 } 385 } 386 387 /* If reported active speed is QDR, check if is FDR-10 */ 388 if (props->active_speed == 4) { 389 if (dev->mdev.caps.ext_port_cap[port - 1] & 390 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 391 init_query_mad(in_mad); 392 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 393 in_mad->attr_mod = cpu_to_be32(port); 394 395 err = mlx5_MAD_IFC(dev, 1, 1, port, 396 NULL, NULL, in_mad, out_mad); 397 if (err) 398 goto out; 399 400 /* Checking LinkSpeedActive for FDR-10 */ 401 if (out_mad->data[15] & 0x1) 402 props->active_speed = 8; 403 } 404 } 405 406 out: 407 kfree(in_mad); 408 kfree(out_mad); 409 410 return err; 411 } 412 413 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 414 union ib_gid *gid) 415 { 416 struct ib_smp *in_mad = NULL; 417 struct ib_smp *out_mad = NULL; 418 int err = -ENOMEM; 419 420 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 421 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 422 if (!in_mad || !out_mad) 423 goto out; 424 425 init_query_mad(in_mad); 426 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 427 in_mad->attr_mod = cpu_to_be32(port); 428 429 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 430 if (err) 431 goto out; 432 433 memcpy(gid->raw, out_mad->data + 8, 8); 434 435 init_query_mad(in_mad); 436 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 437 in_mad->attr_mod = cpu_to_be32(index / 8); 438 439 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 440 if (err) 441 goto out; 442 443 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 444 445 out: 446 kfree(in_mad); 447 kfree(out_mad); 448 return err; 449 } 450 451 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 452 u16 *pkey) 453 { 454 struct ib_smp *in_mad = NULL; 455 struct ib_smp *out_mad = NULL; 456 int err = -ENOMEM; 457 458 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 459 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 460 if (!in_mad || !out_mad) 461 goto out; 462 463 init_query_mad(in_mad); 464 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 465 in_mad->attr_mod = cpu_to_be32(index / 32); 466 467 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 468 if (err) 469 goto out; 470 471 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 472 473 out: 474 kfree(in_mad); 475 kfree(out_mad); 476 return err; 477 } 478 479 struct mlx5_reg_node_desc { 480 u8 desc[64]; 481 }; 482 483 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 484 struct ib_device_modify *props) 485 { 486 struct mlx5_ib_dev *dev = to_mdev(ibdev); 487 struct mlx5_reg_node_desc in; 488 struct mlx5_reg_node_desc out; 489 int err; 490 491 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 492 return -EOPNOTSUPP; 493 494 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 495 return 0; 496 497 /* 498 * If possible, pass node desc to FW, so it can generate 499 * a 144 trap. If cmd fails, just ignore. 500 */ 501 memcpy(&in, props->node_desc, 64); 502 err = mlx5_core_access_reg(&dev->mdev, &in, sizeof(in), &out, 503 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 504 if (err) 505 return err; 506 507 memcpy(ibdev->node_desc, props->node_desc, 64); 508 509 return err; 510 } 511 512 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 513 struct ib_port_modify *props) 514 { 515 struct mlx5_ib_dev *dev = to_mdev(ibdev); 516 struct ib_port_attr attr; 517 u32 tmp; 518 int err; 519 520 mutex_lock(&dev->cap_mask_mutex); 521 522 err = mlx5_ib_query_port(ibdev, port, &attr); 523 if (err) 524 goto out; 525 526 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 527 ~props->clr_port_cap_mask; 528 529 err = mlx5_set_port_caps(&dev->mdev, port, tmp); 530 531 out: 532 mutex_unlock(&dev->cap_mask_mutex); 533 return err; 534 } 535 536 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, 537 struct ib_udata *udata) 538 { 539 struct mlx5_ib_dev *dev = to_mdev(ibdev); 540 struct mlx5_ib_alloc_ucontext_req req; 541 struct mlx5_ib_alloc_ucontext_resp resp; 542 struct mlx5_ib_ucontext *context; 543 struct mlx5_uuar_info *uuari; 544 struct mlx5_uar *uars; 545 int num_uars; 546 int uuarn; 547 int err; 548 int i; 549 550 if (!dev->ib_active) 551 return ERR_PTR(-EAGAIN); 552 553 err = ib_copy_from_udata(&req, udata, sizeof(req)); 554 if (err) 555 return ERR_PTR(err); 556 557 if (req.total_num_uuars > MLX5_MAX_UUARS) 558 return ERR_PTR(-ENOMEM); 559 560 if (req.total_num_uuars == 0) 561 return ERR_PTR(-EINVAL); 562 563 req.total_num_uuars = ALIGN(req.total_num_uuars, MLX5_BF_REGS_PER_PAGE); 564 if (req.num_low_latency_uuars > req.total_num_uuars - 1) 565 return ERR_PTR(-EINVAL); 566 567 num_uars = req.total_num_uuars / MLX5_BF_REGS_PER_PAGE; 568 resp.qp_tab_size = 1 << dev->mdev.caps.log_max_qp; 569 resp.bf_reg_size = dev->mdev.caps.bf_reg_size; 570 resp.cache_line_size = L1_CACHE_BYTES; 571 resp.max_sq_desc_sz = dev->mdev.caps.max_sq_desc_sz; 572 resp.max_rq_desc_sz = dev->mdev.caps.max_rq_desc_sz; 573 resp.max_send_wqebb = dev->mdev.caps.max_wqes; 574 resp.max_recv_wr = dev->mdev.caps.max_wqes; 575 resp.max_srq_recv_wr = dev->mdev.caps.max_srq_wqes; 576 577 context = kzalloc(sizeof(*context), GFP_KERNEL); 578 if (!context) 579 return ERR_PTR(-ENOMEM); 580 581 uuari = &context->uuari; 582 mutex_init(&uuari->lock); 583 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL); 584 if (!uars) { 585 err = -ENOMEM; 586 goto out_ctx; 587 } 588 589 uuari->bitmap = kcalloc(BITS_TO_LONGS(req.total_num_uuars), 590 sizeof(*uuari->bitmap), 591 GFP_KERNEL); 592 if (!uuari->bitmap) { 593 err = -ENOMEM; 594 goto out_uar_ctx; 595 } 596 /* 597 * clear all fast path uuars 598 */ 599 for (i = 0; i < req.total_num_uuars; i++) { 600 uuarn = i & 3; 601 if (uuarn == 2 || uuarn == 3) 602 set_bit(i, uuari->bitmap); 603 } 604 605 uuari->count = kcalloc(req.total_num_uuars, sizeof(*uuari->count), GFP_KERNEL); 606 if (!uuari->count) { 607 err = -ENOMEM; 608 goto out_bitmap; 609 } 610 611 for (i = 0; i < num_uars; i++) { 612 err = mlx5_cmd_alloc_uar(&dev->mdev, &uars[i].index); 613 if (err) 614 goto out_count; 615 } 616 617 INIT_LIST_HEAD(&context->db_page_list); 618 mutex_init(&context->db_page_mutex); 619 620 resp.tot_uuars = req.total_num_uuars; 621 resp.num_ports = dev->mdev.caps.num_ports; 622 err = ib_copy_to_udata(udata, &resp, 623 sizeof(resp) - sizeof(resp.reserved)); 624 if (err) 625 goto out_uars; 626 627 uuari->num_low_latency_uuars = req.num_low_latency_uuars; 628 uuari->uars = uars; 629 uuari->num_uars = num_uars; 630 return &context->ibucontext; 631 632 out_uars: 633 for (i--; i >= 0; i--) 634 mlx5_cmd_free_uar(&dev->mdev, uars[i].index); 635 out_count: 636 kfree(uuari->count); 637 638 out_bitmap: 639 kfree(uuari->bitmap); 640 641 out_uar_ctx: 642 kfree(uars); 643 644 out_ctx: 645 kfree(context); 646 return ERR_PTR(err); 647 } 648 649 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 650 { 651 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 652 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 653 struct mlx5_uuar_info *uuari = &context->uuari; 654 int i; 655 656 for (i = 0; i < uuari->num_uars; i++) { 657 if (mlx5_cmd_free_uar(&dev->mdev, uuari->uars[i].index)) 658 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index); 659 } 660 661 kfree(uuari->count); 662 kfree(uuari->bitmap); 663 kfree(uuari->uars); 664 kfree(context); 665 666 return 0; 667 } 668 669 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index) 670 { 671 return (pci_resource_start(dev->mdev.pdev, 0) >> PAGE_SHIFT) + index; 672 } 673 674 static int get_command(unsigned long offset) 675 { 676 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 677 } 678 679 static int get_arg(unsigned long offset) 680 { 681 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 682 } 683 684 static int get_index(unsigned long offset) 685 { 686 return get_arg(offset); 687 } 688 689 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 690 { 691 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 692 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 693 struct mlx5_uuar_info *uuari = &context->uuari; 694 unsigned long command; 695 unsigned long idx; 696 phys_addr_t pfn; 697 698 command = get_command(vma->vm_pgoff); 699 switch (command) { 700 case MLX5_IB_MMAP_REGULAR_PAGE: 701 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 702 return -EINVAL; 703 704 idx = get_index(vma->vm_pgoff); 705 pfn = uar_index2pfn(dev, uuari->uars[idx].index); 706 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx, 707 (unsigned long long)pfn); 708 709 if (idx >= uuari->num_uars) 710 return -EINVAL; 711 712 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 713 if (io_remap_pfn_range(vma, vma->vm_start, pfn, 714 PAGE_SIZE, vma->vm_page_prot)) 715 return -EAGAIN; 716 717 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n", 718 vma->vm_start, 719 (unsigned long long)pfn << PAGE_SHIFT); 720 break; 721 722 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 723 return -ENOSYS; 724 725 default: 726 return -EINVAL; 727 } 728 729 return 0; 730 } 731 732 static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn) 733 { 734 struct mlx5_create_mkey_mbox_in *in; 735 struct mlx5_mkey_seg *seg; 736 struct mlx5_core_mr mr; 737 int err; 738 739 in = kzalloc(sizeof(*in), GFP_KERNEL); 740 if (!in) 741 return -ENOMEM; 742 743 seg = &in->seg; 744 seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA; 745 seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64); 746 seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); 747 seg->start_addr = 0; 748 749 err = mlx5_core_create_mkey(&dev->mdev, &mr, in, sizeof(*in)); 750 if (err) { 751 mlx5_ib_warn(dev, "failed to create mkey, %d\n", err); 752 goto err_in; 753 } 754 755 kfree(in); 756 *key = mr.key; 757 758 return 0; 759 760 err_in: 761 kfree(in); 762 763 return err; 764 } 765 766 static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key) 767 { 768 struct mlx5_core_mr mr; 769 int err; 770 771 memset(&mr, 0, sizeof(mr)); 772 mr.key = key; 773 err = mlx5_core_destroy_mkey(&dev->mdev, &mr); 774 if (err) 775 mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key); 776 } 777 778 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev, 779 struct ib_ucontext *context, 780 struct ib_udata *udata) 781 { 782 struct mlx5_ib_alloc_pd_resp resp; 783 struct mlx5_ib_pd *pd; 784 int err; 785 786 pd = kmalloc(sizeof(*pd), GFP_KERNEL); 787 if (!pd) 788 return ERR_PTR(-ENOMEM); 789 790 err = mlx5_core_alloc_pd(&to_mdev(ibdev)->mdev, &pd->pdn); 791 if (err) { 792 kfree(pd); 793 return ERR_PTR(err); 794 } 795 796 if (context) { 797 resp.pdn = pd->pdn; 798 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 799 mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn); 800 kfree(pd); 801 return ERR_PTR(-EFAULT); 802 } 803 } else { 804 err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn); 805 if (err) { 806 mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn); 807 kfree(pd); 808 return ERR_PTR(err); 809 } 810 } 811 812 return &pd->ibpd; 813 } 814 815 static int mlx5_ib_dealloc_pd(struct ib_pd *pd) 816 { 817 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 818 struct mlx5_ib_pd *mpd = to_mpd(pd); 819 820 if (!pd->uobject) 821 free_pa_mkey(mdev, mpd->pa_lkey); 822 823 mlx5_core_dealloc_pd(&mdev->mdev, mpd->pdn); 824 kfree(mpd); 825 826 return 0; 827 } 828 829 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 830 { 831 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 832 int err; 833 834 err = mlx5_core_attach_mcg(&dev->mdev, gid, ibqp->qp_num); 835 if (err) 836 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 837 ibqp->qp_num, gid->raw); 838 839 return err; 840 } 841 842 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 843 { 844 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 845 int err; 846 847 err = mlx5_core_detach_mcg(&dev->mdev, gid, ibqp->qp_num); 848 if (err) 849 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 850 ibqp->qp_num, gid->raw); 851 852 return err; 853 } 854 855 static int init_node_data(struct mlx5_ib_dev *dev) 856 { 857 struct ib_smp *in_mad = NULL; 858 struct ib_smp *out_mad = NULL; 859 int err = -ENOMEM; 860 861 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 862 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 863 if (!in_mad || !out_mad) 864 goto out; 865 866 init_query_mad(in_mad); 867 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 868 869 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 870 if (err) 871 goto out; 872 873 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 874 875 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 876 877 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 878 if (err) 879 goto out; 880 881 dev->mdev.rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32)); 882 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 883 884 out: 885 kfree(in_mad); 886 kfree(out_mad); 887 return err; 888 } 889 890 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr, 891 char *buf) 892 { 893 struct mlx5_ib_dev *dev = 894 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 895 896 return sprintf(buf, "%d\n", dev->mdev.priv.fw_pages); 897 } 898 899 static ssize_t show_reg_pages(struct device *device, 900 struct device_attribute *attr, char *buf) 901 { 902 struct mlx5_ib_dev *dev = 903 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 904 905 return sprintf(buf, "%d\n", dev->mdev.priv.reg_pages); 906 } 907 908 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 909 char *buf) 910 { 911 struct mlx5_ib_dev *dev = 912 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 913 return sprintf(buf, "MT%d\n", dev->mdev.pdev->device); 914 } 915 916 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 917 char *buf) 918 { 919 struct mlx5_ib_dev *dev = 920 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 921 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(&dev->mdev), 922 fw_rev_min(&dev->mdev), fw_rev_sub(&dev->mdev)); 923 } 924 925 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 926 char *buf) 927 { 928 struct mlx5_ib_dev *dev = 929 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 930 return sprintf(buf, "%x\n", dev->mdev.rev_id); 931 } 932 933 static ssize_t show_board(struct device *device, struct device_attribute *attr, 934 char *buf) 935 { 936 struct mlx5_ib_dev *dev = 937 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 938 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 939 dev->mdev.board_id); 940 } 941 942 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 943 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 944 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 945 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 946 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL); 947 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL); 948 949 static struct device_attribute *mlx5_class_attributes[] = { 950 &dev_attr_hw_rev, 951 &dev_attr_fw_ver, 952 &dev_attr_hca_type, 953 &dev_attr_board_id, 954 &dev_attr_fw_pages, 955 &dev_attr_reg_pages, 956 }; 957 958 static void mlx5_ib_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, 959 void *data) 960 { 961 struct mlx5_ib_dev *ibdev = container_of(dev, struct mlx5_ib_dev, mdev); 962 struct ib_event ibev; 963 u8 port = 0; 964 965 switch (event) { 966 case MLX5_DEV_EVENT_SYS_ERROR: 967 ibdev->ib_active = false; 968 ibev.event = IB_EVENT_DEVICE_FATAL; 969 break; 970 971 case MLX5_DEV_EVENT_PORT_UP: 972 ibev.event = IB_EVENT_PORT_ACTIVE; 973 port = *(u8 *)data; 974 break; 975 976 case MLX5_DEV_EVENT_PORT_DOWN: 977 ibev.event = IB_EVENT_PORT_ERR; 978 port = *(u8 *)data; 979 break; 980 981 case MLX5_DEV_EVENT_PORT_INITIALIZED: 982 /* not used by ULPs */ 983 return; 984 985 case MLX5_DEV_EVENT_LID_CHANGE: 986 ibev.event = IB_EVENT_LID_CHANGE; 987 port = *(u8 *)data; 988 break; 989 990 case MLX5_DEV_EVENT_PKEY_CHANGE: 991 ibev.event = IB_EVENT_PKEY_CHANGE; 992 port = *(u8 *)data; 993 break; 994 995 case MLX5_DEV_EVENT_GUID_CHANGE: 996 ibev.event = IB_EVENT_GID_CHANGE; 997 port = *(u8 *)data; 998 break; 999 1000 case MLX5_DEV_EVENT_CLIENT_REREG: 1001 ibev.event = IB_EVENT_CLIENT_REREGISTER; 1002 port = *(u8 *)data; 1003 break; 1004 } 1005 1006 ibev.device = &ibdev->ib_dev; 1007 ibev.element.port_num = port; 1008 1009 if (ibdev->ib_active) 1010 ib_dispatch_event(&ibev); 1011 } 1012 1013 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 1014 { 1015 int port; 1016 1017 for (port = 1; port <= dev->mdev.caps.num_ports; port++) 1018 mlx5_query_ext_port_caps(dev, port); 1019 } 1020 1021 static int get_port_caps(struct mlx5_ib_dev *dev) 1022 { 1023 struct ib_device_attr *dprops = NULL; 1024 struct ib_port_attr *pprops = NULL; 1025 int err = 0; 1026 int port; 1027 1028 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL); 1029 if (!pprops) 1030 goto out; 1031 1032 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL); 1033 if (!dprops) 1034 goto out; 1035 1036 err = mlx5_ib_query_device(&dev->ib_dev, dprops); 1037 if (err) { 1038 mlx5_ib_warn(dev, "query_device failed %d\n", err); 1039 goto out; 1040 } 1041 1042 for (port = 1; port <= dev->mdev.caps.num_ports; port++) { 1043 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops); 1044 if (err) { 1045 mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err); 1046 break; 1047 } 1048 dev->mdev.caps.port[port - 1].pkey_table_len = dprops->max_pkeys; 1049 dev->mdev.caps.port[port - 1].gid_table_len = pprops->gid_tbl_len; 1050 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n", 1051 dprops->max_pkeys, pprops->gid_tbl_len); 1052 } 1053 1054 out: 1055 kfree(pprops); 1056 kfree(dprops); 1057 1058 return err; 1059 } 1060 1061 static void destroy_umrc_res(struct mlx5_ib_dev *dev) 1062 { 1063 int err; 1064 1065 err = mlx5_mr_cache_cleanup(dev); 1066 if (err) 1067 mlx5_ib_warn(dev, "mr cache cleanup failed\n"); 1068 1069 mlx5_ib_destroy_qp(dev->umrc.qp); 1070 ib_destroy_cq(dev->umrc.cq); 1071 ib_dereg_mr(dev->umrc.mr); 1072 ib_dealloc_pd(dev->umrc.pd); 1073 } 1074 1075 enum { 1076 MAX_UMR_WR = 128, 1077 }; 1078 1079 static int create_umr_res(struct mlx5_ib_dev *dev) 1080 { 1081 struct ib_qp_init_attr *init_attr = NULL; 1082 struct ib_qp_attr *attr = NULL; 1083 struct ib_pd *pd; 1084 struct ib_cq *cq; 1085 struct ib_qp *qp; 1086 struct ib_mr *mr; 1087 int ret; 1088 1089 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1090 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); 1091 if (!attr || !init_attr) { 1092 ret = -ENOMEM; 1093 goto error_0; 1094 } 1095 1096 pd = ib_alloc_pd(&dev->ib_dev); 1097 if (IS_ERR(pd)) { 1098 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n"); 1099 ret = PTR_ERR(pd); 1100 goto error_0; 1101 } 1102 1103 mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE); 1104 if (IS_ERR(mr)) { 1105 mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n"); 1106 ret = PTR_ERR(mr); 1107 goto error_1; 1108 } 1109 1110 cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128, 1111 0); 1112 if (IS_ERR(cq)) { 1113 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n"); 1114 ret = PTR_ERR(cq); 1115 goto error_2; 1116 } 1117 ib_req_notify_cq(cq, IB_CQ_NEXT_COMP); 1118 1119 init_attr->send_cq = cq; 1120 init_attr->recv_cq = cq; 1121 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; 1122 init_attr->cap.max_send_wr = MAX_UMR_WR; 1123 init_attr->cap.max_send_sge = 1; 1124 init_attr->qp_type = MLX5_IB_QPT_REG_UMR; 1125 init_attr->port_num = 1; 1126 qp = mlx5_ib_create_qp(pd, init_attr, NULL); 1127 if (IS_ERR(qp)) { 1128 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n"); 1129 ret = PTR_ERR(qp); 1130 goto error_3; 1131 } 1132 qp->device = &dev->ib_dev; 1133 qp->real_qp = qp; 1134 qp->uobject = NULL; 1135 qp->qp_type = MLX5_IB_QPT_REG_UMR; 1136 1137 attr->qp_state = IB_QPS_INIT; 1138 attr->port_num = 1; 1139 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | 1140 IB_QP_PORT, NULL); 1141 if (ret) { 1142 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n"); 1143 goto error_4; 1144 } 1145 1146 memset(attr, 0, sizeof(*attr)); 1147 attr->qp_state = IB_QPS_RTR; 1148 attr->path_mtu = IB_MTU_256; 1149 1150 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 1151 if (ret) { 1152 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n"); 1153 goto error_4; 1154 } 1155 1156 memset(attr, 0, sizeof(*attr)); 1157 attr->qp_state = IB_QPS_RTS; 1158 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 1159 if (ret) { 1160 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n"); 1161 goto error_4; 1162 } 1163 1164 dev->umrc.qp = qp; 1165 dev->umrc.cq = cq; 1166 dev->umrc.mr = mr; 1167 dev->umrc.pd = pd; 1168 1169 sema_init(&dev->umrc.sem, MAX_UMR_WR); 1170 ret = mlx5_mr_cache_init(dev); 1171 if (ret) { 1172 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 1173 goto error_4; 1174 } 1175 1176 kfree(attr); 1177 kfree(init_attr); 1178 1179 return 0; 1180 1181 error_4: 1182 mlx5_ib_destroy_qp(qp); 1183 1184 error_3: 1185 ib_destroy_cq(cq); 1186 1187 error_2: 1188 ib_dereg_mr(mr); 1189 1190 error_1: 1191 ib_dealloc_pd(pd); 1192 1193 error_0: 1194 kfree(attr); 1195 kfree(init_attr); 1196 return ret; 1197 } 1198 1199 static int create_dev_resources(struct mlx5_ib_resources *devr) 1200 { 1201 struct ib_srq_init_attr attr; 1202 struct mlx5_ib_dev *dev; 1203 int ret = 0; 1204 1205 dev = container_of(devr, struct mlx5_ib_dev, devr); 1206 1207 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL); 1208 if (IS_ERR(devr->p0)) { 1209 ret = PTR_ERR(devr->p0); 1210 goto error0; 1211 } 1212 devr->p0->device = &dev->ib_dev; 1213 devr->p0->uobject = NULL; 1214 atomic_set(&devr->p0->usecnt, 0); 1215 1216 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL); 1217 if (IS_ERR(devr->c0)) { 1218 ret = PTR_ERR(devr->c0); 1219 goto error1; 1220 } 1221 devr->c0->device = &dev->ib_dev; 1222 devr->c0->uobject = NULL; 1223 devr->c0->comp_handler = NULL; 1224 devr->c0->event_handler = NULL; 1225 devr->c0->cq_context = NULL; 1226 atomic_set(&devr->c0->usecnt, 0); 1227 1228 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 1229 if (IS_ERR(devr->x0)) { 1230 ret = PTR_ERR(devr->x0); 1231 goto error2; 1232 } 1233 devr->x0->device = &dev->ib_dev; 1234 devr->x0->inode = NULL; 1235 atomic_set(&devr->x0->usecnt, 0); 1236 mutex_init(&devr->x0->tgt_qp_mutex); 1237 INIT_LIST_HEAD(&devr->x0->tgt_qp_list); 1238 1239 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 1240 if (IS_ERR(devr->x1)) { 1241 ret = PTR_ERR(devr->x1); 1242 goto error3; 1243 } 1244 devr->x1->device = &dev->ib_dev; 1245 devr->x1->inode = NULL; 1246 atomic_set(&devr->x1->usecnt, 0); 1247 mutex_init(&devr->x1->tgt_qp_mutex); 1248 INIT_LIST_HEAD(&devr->x1->tgt_qp_list); 1249 1250 memset(&attr, 0, sizeof(attr)); 1251 attr.attr.max_sge = 1; 1252 attr.attr.max_wr = 1; 1253 attr.srq_type = IB_SRQT_XRC; 1254 attr.ext.xrc.cq = devr->c0; 1255 attr.ext.xrc.xrcd = devr->x0; 1256 1257 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL); 1258 if (IS_ERR(devr->s0)) { 1259 ret = PTR_ERR(devr->s0); 1260 goto error4; 1261 } 1262 devr->s0->device = &dev->ib_dev; 1263 devr->s0->pd = devr->p0; 1264 devr->s0->uobject = NULL; 1265 devr->s0->event_handler = NULL; 1266 devr->s0->srq_context = NULL; 1267 devr->s0->srq_type = IB_SRQT_XRC; 1268 devr->s0->ext.xrc.xrcd = devr->x0; 1269 devr->s0->ext.xrc.cq = devr->c0; 1270 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt); 1271 atomic_inc(&devr->s0->ext.xrc.cq->usecnt); 1272 atomic_inc(&devr->p0->usecnt); 1273 atomic_set(&devr->s0->usecnt, 0); 1274 1275 return 0; 1276 1277 error4: 1278 mlx5_ib_dealloc_xrcd(devr->x1); 1279 error3: 1280 mlx5_ib_dealloc_xrcd(devr->x0); 1281 error2: 1282 mlx5_ib_destroy_cq(devr->c0); 1283 error1: 1284 mlx5_ib_dealloc_pd(devr->p0); 1285 error0: 1286 return ret; 1287 } 1288 1289 static void destroy_dev_resources(struct mlx5_ib_resources *devr) 1290 { 1291 mlx5_ib_destroy_srq(devr->s0); 1292 mlx5_ib_dealloc_xrcd(devr->x0); 1293 mlx5_ib_dealloc_xrcd(devr->x1); 1294 mlx5_ib_destroy_cq(devr->c0); 1295 mlx5_ib_dealloc_pd(devr->p0); 1296 } 1297 1298 static int init_one(struct pci_dev *pdev, 1299 const struct pci_device_id *id) 1300 { 1301 struct mlx5_core_dev *mdev; 1302 struct mlx5_ib_dev *dev; 1303 int err; 1304 int i; 1305 1306 printk_once(KERN_INFO "%s", mlx5_version); 1307 1308 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev)); 1309 if (!dev) 1310 return -ENOMEM; 1311 1312 mdev = &dev->mdev; 1313 mdev->event = mlx5_ib_event; 1314 if (prof_sel >= ARRAY_SIZE(profile)) { 1315 pr_warn("selected pofile out of range, selceting default\n"); 1316 prof_sel = 0; 1317 } 1318 mdev->profile = &profile[prof_sel]; 1319 err = mlx5_dev_init(mdev, pdev); 1320 if (err) 1321 goto err_free; 1322 1323 err = get_port_caps(dev); 1324 if (err) 1325 goto err_cleanup; 1326 1327 get_ext_port_caps(dev); 1328 1329 err = alloc_comp_eqs(dev); 1330 if (err) 1331 goto err_cleanup; 1332 1333 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock); 1334 1335 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX); 1336 dev->ib_dev.owner = THIS_MODULE; 1337 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1338 dev->ib_dev.local_dma_lkey = mdev->caps.reserved_lkey; 1339 dev->num_ports = mdev->caps.num_ports; 1340 dev->ib_dev.phys_port_cnt = dev->num_ports; 1341 dev->ib_dev.num_comp_vectors = dev->num_comp_vectors; 1342 dev->ib_dev.dma_device = &mdev->pdev->dev; 1343 1344 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION; 1345 dev->ib_dev.uverbs_cmd_mask = 1346 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1347 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1348 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1349 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1350 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1351 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1352 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1353 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1354 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1355 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1356 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1357 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1358 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1359 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1360 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1361 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1362 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1363 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1364 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1365 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1366 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1367 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1368 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1369 1370 dev->ib_dev.query_device = mlx5_ib_query_device; 1371 dev->ib_dev.query_port = mlx5_ib_query_port; 1372 dev->ib_dev.query_gid = mlx5_ib_query_gid; 1373 dev->ib_dev.query_pkey = mlx5_ib_query_pkey; 1374 dev->ib_dev.modify_device = mlx5_ib_modify_device; 1375 dev->ib_dev.modify_port = mlx5_ib_modify_port; 1376 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext; 1377 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext; 1378 dev->ib_dev.mmap = mlx5_ib_mmap; 1379 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd; 1380 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd; 1381 dev->ib_dev.create_ah = mlx5_ib_create_ah; 1382 dev->ib_dev.query_ah = mlx5_ib_query_ah; 1383 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah; 1384 dev->ib_dev.create_srq = mlx5_ib_create_srq; 1385 dev->ib_dev.modify_srq = mlx5_ib_modify_srq; 1386 dev->ib_dev.query_srq = mlx5_ib_query_srq; 1387 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq; 1388 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv; 1389 dev->ib_dev.create_qp = mlx5_ib_create_qp; 1390 dev->ib_dev.modify_qp = mlx5_ib_modify_qp; 1391 dev->ib_dev.query_qp = mlx5_ib_query_qp; 1392 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp; 1393 dev->ib_dev.post_send = mlx5_ib_post_send; 1394 dev->ib_dev.post_recv = mlx5_ib_post_recv; 1395 dev->ib_dev.create_cq = mlx5_ib_create_cq; 1396 dev->ib_dev.modify_cq = mlx5_ib_modify_cq; 1397 dev->ib_dev.resize_cq = mlx5_ib_resize_cq; 1398 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq; 1399 dev->ib_dev.poll_cq = mlx5_ib_poll_cq; 1400 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq; 1401 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr; 1402 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr; 1403 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr; 1404 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach; 1405 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach; 1406 dev->ib_dev.process_mad = mlx5_ib_process_mad; 1407 dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr; 1408 dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list; 1409 dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list; 1410 1411 if (mdev->caps.flags & MLX5_DEV_CAP_FLAG_XRC) { 1412 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd; 1413 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd; 1414 dev->ib_dev.uverbs_cmd_mask |= 1415 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1416 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1417 } 1418 1419 err = init_node_data(dev); 1420 if (err) 1421 goto err_eqs; 1422 1423 mutex_init(&dev->cap_mask_mutex); 1424 spin_lock_init(&dev->mr_lock); 1425 1426 err = create_dev_resources(&dev->devr); 1427 if (err) 1428 goto err_eqs; 1429 1430 err = ib_register_device(&dev->ib_dev, NULL); 1431 if (err) 1432 goto err_rsrc; 1433 1434 err = create_umr_res(dev); 1435 if (err) 1436 goto err_dev; 1437 1438 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) { 1439 err = device_create_file(&dev->ib_dev.dev, 1440 mlx5_class_attributes[i]); 1441 if (err) 1442 goto err_umrc; 1443 } 1444 1445 dev->ib_active = true; 1446 1447 return 0; 1448 1449 err_umrc: 1450 destroy_umrc_res(dev); 1451 1452 err_dev: 1453 ib_unregister_device(&dev->ib_dev); 1454 1455 err_rsrc: 1456 destroy_dev_resources(&dev->devr); 1457 1458 err_eqs: 1459 free_comp_eqs(dev); 1460 1461 err_cleanup: 1462 mlx5_dev_cleanup(mdev); 1463 1464 err_free: 1465 ib_dealloc_device((struct ib_device *)dev); 1466 1467 return err; 1468 } 1469 1470 static void remove_one(struct pci_dev *pdev) 1471 { 1472 struct mlx5_ib_dev *dev = mlx5_pci2ibdev(pdev); 1473 1474 destroy_umrc_res(dev); 1475 ib_unregister_device(&dev->ib_dev); 1476 destroy_dev_resources(&dev->devr); 1477 free_comp_eqs(dev); 1478 mlx5_dev_cleanup(&dev->mdev); 1479 ib_dealloc_device(&dev->ib_dev); 1480 } 1481 1482 static DEFINE_PCI_DEVICE_TABLE(mlx5_ib_pci_table) = { 1483 { PCI_VDEVICE(MELLANOX, 4113) }, /* MT4113 Connect-IB */ 1484 { 0, } 1485 }; 1486 1487 MODULE_DEVICE_TABLE(pci, mlx5_ib_pci_table); 1488 1489 static struct pci_driver mlx5_ib_driver = { 1490 .name = DRIVER_NAME, 1491 .id_table = mlx5_ib_pci_table, 1492 .probe = init_one, 1493 .remove = remove_one 1494 }; 1495 1496 static int __init mlx5_ib_init(void) 1497 { 1498 return pci_register_driver(&mlx5_ib_driver); 1499 } 1500 1501 static void __exit mlx5_ib_cleanup(void) 1502 { 1503 pci_unregister_driver(&mlx5_ib_driver); 1504 } 1505 1506 module_init(mlx5_ib_init); 1507 module_exit(mlx5_ib_cleanup); 1508