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 "2.2-1" 50 #define DRIVER_RELDATE "Feb 2014" 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 deprecated_prof_sel = 2; 58 module_param_named(prof_sel, deprecated_prof_sel, int, 0444); 59 MODULE_PARM_DESC(prof_sel, "profile selector. Deprecated here. Moved to module mlx5_core"); 60 61 static char mlx5_version[] = 62 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v" 63 DRIVER_VERSION " (" DRIVER_RELDATE ")\n"; 64 65 int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn) 66 { 67 struct mlx5_eq_table *table = &dev->mdev->priv.eq_table; 68 struct mlx5_eq *eq, *n; 69 int err = -ENOENT; 70 71 spin_lock(&table->lock); 72 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) { 73 if (eq->index == vector) { 74 *eqn = eq->eqn; 75 *irqn = eq->irqn; 76 err = 0; 77 break; 78 } 79 } 80 spin_unlock(&table->lock); 81 82 return err; 83 } 84 85 static int alloc_comp_eqs(struct mlx5_ib_dev *dev) 86 { 87 struct mlx5_eq_table *table = &dev->mdev->priv.eq_table; 88 char name[MLX5_MAX_EQ_NAME]; 89 struct mlx5_eq *eq, *n; 90 int ncomp_vec; 91 int nent; 92 int err; 93 int i; 94 95 INIT_LIST_HEAD(&dev->eqs_list); 96 ncomp_vec = table->num_comp_vectors; 97 nent = MLX5_COMP_EQ_SIZE; 98 for (i = 0; i < ncomp_vec; i++) { 99 eq = kzalloc(sizeof(*eq), GFP_KERNEL); 100 if (!eq) { 101 err = -ENOMEM; 102 goto clean; 103 } 104 105 snprintf(name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i); 106 err = mlx5_create_map_eq(dev->mdev, eq, 107 i + MLX5_EQ_VEC_COMP_BASE, nent, 0, 108 name, &dev->mdev->priv.uuari.uars[0]); 109 if (err) { 110 kfree(eq); 111 goto clean; 112 } 113 mlx5_ib_dbg(dev, "allocated completion EQN %d\n", eq->eqn); 114 eq->index = i; 115 spin_lock(&table->lock); 116 list_add_tail(&eq->list, &dev->eqs_list); 117 spin_unlock(&table->lock); 118 } 119 120 dev->num_comp_vectors = ncomp_vec; 121 return 0; 122 123 clean: 124 spin_lock(&table->lock); 125 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) { 126 list_del(&eq->list); 127 spin_unlock(&table->lock); 128 if (mlx5_destroy_unmap_eq(dev->mdev, eq)) 129 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn); 130 kfree(eq); 131 spin_lock(&table->lock); 132 } 133 spin_unlock(&table->lock); 134 return err; 135 } 136 137 static void free_comp_eqs(struct mlx5_ib_dev *dev) 138 { 139 struct mlx5_eq_table *table = &dev->mdev->priv.eq_table; 140 struct mlx5_eq *eq, *n; 141 142 spin_lock(&table->lock); 143 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) { 144 list_del(&eq->list); 145 spin_unlock(&table->lock); 146 if (mlx5_destroy_unmap_eq(dev->mdev, eq)) 147 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn); 148 kfree(eq); 149 spin_lock(&table->lock); 150 } 151 spin_unlock(&table->lock); 152 } 153 154 static int mlx5_ib_query_device(struct ib_device *ibdev, 155 struct ib_device_attr *props) 156 { 157 struct mlx5_ib_dev *dev = to_mdev(ibdev); 158 struct ib_smp *in_mad = NULL; 159 struct ib_smp *out_mad = NULL; 160 struct mlx5_general_caps *gen; 161 int err = -ENOMEM; 162 int max_rq_sg; 163 int max_sq_sg; 164 u64 flags; 165 166 gen = &dev->mdev->caps.gen; 167 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 168 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 169 if (!in_mad || !out_mad) 170 goto out; 171 172 init_query_mad(in_mad); 173 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 174 175 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); 176 if (err) 177 goto out; 178 179 memset(props, 0, sizeof(*props)); 180 181 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) | 182 (fw_rev_min(dev->mdev) << 16) | 183 fw_rev_sub(dev->mdev); 184 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 185 IB_DEVICE_PORT_ACTIVE_EVENT | 186 IB_DEVICE_SYS_IMAGE_GUID | 187 IB_DEVICE_RC_RNR_NAK_GEN; 188 flags = gen->flags; 189 if (flags & MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR) 190 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 191 if (flags & MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR) 192 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 193 if (flags & MLX5_DEV_CAP_FLAG_APM) 194 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 195 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 196 if (flags & MLX5_DEV_CAP_FLAG_XRC) 197 props->device_cap_flags |= IB_DEVICE_XRC; 198 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 199 if (flags & MLX5_DEV_CAP_FLAG_SIG_HAND_OVER) { 200 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER; 201 /* At this stage no support for signature handover */ 202 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 | 203 IB_PROT_T10DIF_TYPE_2 | 204 IB_PROT_T10DIF_TYPE_3; 205 props->sig_guard_cap = IB_GUARD_T10DIF_CRC | 206 IB_GUARD_T10DIF_CSUM; 207 } 208 if (flags & MLX5_DEV_CAP_FLAG_BLOCK_MCAST) 209 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 210 211 props->vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 212 0xffffff; 213 props->vendor_part_id = be16_to_cpup((__be16 *)(out_mad->data + 30)); 214 props->hw_ver = be32_to_cpup((__be32 *)(out_mad->data + 32)); 215 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 216 217 props->max_mr_size = ~0ull; 218 props->page_size_cap = gen->min_page_sz; 219 props->max_qp = 1 << gen->log_max_qp; 220 props->max_qp_wr = gen->max_wqes; 221 max_rq_sg = gen->max_rq_desc_sz / sizeof(struct mlx5_wqe_data_seg); 222 max_sq_sg = (gen->max_sq_desc_sz - sizeof(struct mlx5_wqe_ctrl_seg)) / 223 sizeof(struct mlx5_wqe_data_seg); 224 props->max_sge = min(max_rq_sg, max_sq_sg); 225 props->max_cq = 1 << gen->log_max_cq; 226 props->max_cqe = gen->max_cqes - 1; 227 props->max_mr = 1 << gen->log_max_mkey; 228 props->max_pd = 1 << gen->log_max_pd; 229 props->max_qp_rd_atom = 1 << gen->log_max_ra_req_qp; 230 props->max_qp_init_rd_atom = 1 << gen->log_max_ra_res_qp; 231 props->max_srq = 1 << gen->log_max_srq; 232 props->max_srq_wr = gen->max_srq_wqes - 1; 233 props->local_ca_ack_delay = gen->local_ca_ack_delay; 234 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 235 props->max_srq_sge = max_rq_sg - 1; 236 props->max_fast_reg_page_list_len = (unsigned int)-1; 237 props->local_ca_ack_delay = gen->local_ca_ack_delay; 238 props->atomic_cap = IB_ATOMIC_NONE; 239 props->masked_atomic_cap = IB_ATOMIC_NONE; 240 props->max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28)); 241 props->max_mcast_grp = 1 << gen->log_max_mcg; 242 props->max_mcast_qp_attach = gen->max_qp_mcg; 243 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 244 props->max_mcast_grp; 245 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */ 246 247 out: 248 kfree(in_mad); 249 kfree(out_mad); 250 251 return err; 252 } 253 254 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port, 255 struct ib_port_attr *props) 256 { 257 struct mlx5_ib_dev *dev = to_mdev(ibdev); 258 struct ib_smp *in_mad = NULL; 259 struct ib_smp *out_mad = NULL; 260 struct mlx5_general_caps *gen; 261 int ext_active_speed; 262 int err = -ENOMEM; 263 264 gen = &dev->mdev->caps.gen; 265 if (port < 1 || port > gen->num_ports) { 266 mlx5_ib_warn(dev, "invalid port number %d\n", port); 267 return -EINVAL; 268 } 269 270 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 271 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 272 if (!in_mad || !out_mad) 273 goto out; 274 275 memset(props, 0, sizeof(*props)); 276 277 init_query_mad(in_mad); 278 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 279 in_mad->attr_mod = cpu_to_be32(port); 280 281 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 282 if (err) { 283 mlx5_ib_warn(dev, "err %d\n", err); 284 goto out; 285 } 286 287 288 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 289 props->lmc = out_mad->data[34] & 0x7; 290 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 291 props->sm_sl = out_mad->data[36] & 0xf; 292 props->state = out_mad->data[32] & 0xf; 293 props->phys_state = out_mad->data[33] >> 4; 294 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 295 props->gid_tbl_len = out_mad->data[50]; 296 props->max_msg_sz = 1 << gen->log_max_msg; 297 props->pkey_tbl_len = gen->port[port - 1].pkey_table_len; 298 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 299 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 300 props->active_width = out_mad->data[31] & 0xf; 301 props->active_speed = out_mad->data[35] >> 4; 302 props->max_mtu = out_mad->data[41] & 0xf; 303 props->active_mtu = out_mad->data[36] >> 4; 304 props->subnet_timeout = out_mad->data[51] & 0x1f; 305 props->max_vl_num = out_mad->data[37] >> 4; 306 props->init_type_reply = out_mad->data[41] >> 4; 307 308 /* Check if extended speeds (EDR/FDR/...) are supported */ 309 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 310 ext_active_speed = out_mad->data[62] >> 4; 311 312 switch (ext_active_speed) { 313 case 1: 314 props->active_speed = 16; /* FDR */ 315 break; 316 case 2: 317 props->active_speed = 32; /* EDR */ 318 break; 319 } 320 } 321 322 /* If reported active speed is QDR, check if is FDR-10 */ 323 if (props->active_speed == 4) { 324 if (gen->ext_port_cap[port - 1] & 325 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 326 init_query_mad(in_mad); 327 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 328 in_mad->attr_mod = cpu_to_be32(port); 329 330 err = mlx5_MAD_IFC(dev, 1, 1, port, 331 NULL, NULL, in_mad, out_mad); 332 if (err) 333 goto out; 334 335 /* Checking LinkSpeedActive for FDR-10 */ 336 if (out_mad->data[15] & 0x1) 337 props->active_speed = 8; 338 } 339 } 340 341 out: 342 kfree(in_mad); 343 kfree(out_mad); 344 345 return err; 346 } 347 348 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 349 union ib_gid *gid) 350 { 351 struct ib_smp *in_mad = NULL; 352 struct ib_smp *out_mad = NULL; 353 int err = -ENOMEM; 354 355 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 356 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 357 if (!in_mad || !out_mad) 358 goto out; 359 360 init_query_mad(in_mad); 361 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 362 in_mad->attr_mod = cpu_to_be32(port); 363 364 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 365 if (err) 366 goto out; 367 368 memcpy(gid->raw, out_mad->data + 8, 8); 369 370 init_query_mad(in_mad); 371 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 372 in_mad->attr_mod = cpu_to_be32(index / 8); 373 374 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 375 if (err) 376 goto out; 377 378 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 379 380 out: 381 kfree(in_mad); 382 kfree(out_mad); 383 return err; 384 } 385 386 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 387 u16 *pkey) 388 { 389 struct ib_smp *in_mad = NULL; 390 struct ib_smp *out_mad = NULL; 391 int err = -ENOMEM; 392 393 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 394 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 395 if (!in_mad || !out_mad) 396 goto out; 397 398 init_query_mad(in_mad); 399 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 400 in_mad->attr_mod = cpu_to_be32(index / 32); 401 402 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 403 if (err) 404 goto out; 405 406 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 407 408 out: 409 kfree(in_mad); 410 kfree(out_mad); 411 return err; 412 } 413 414 struct mlx5_reg_node_desc { 415 u8 desc[64]; 416 }; 417 418 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 419 struct ib_device_modify *props) 420 { 421 struct mlx5_ib_dev *dev = to_mdev(ibdev); 422 struct mlx5_reg_node_desc in; 423 struct mlx5_reg_node_desc out; 424 int err; 425 426 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 427 return -EOPNOTSUPP; 428 429 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 430 return 0; 431 432 /* 433 * If possible, pass node desc to FW, so it can generate 434 * a 144 trap. If cmd fails, just ignore. 435 */ 436 memcpy(&in, props->node_desc, 64); 437 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, 438 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 439 if (err) 440 return err; 441 442 memcpy(ibdev->node_desc, props->node_desc, 64); 443 444 return err; 445 } 446 447 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 448 struct ib_port_modify *props) 449 { 450 struct mlx5_ib_dev *dev = to_mdev(ibdev); 451 struct ib_port_attr attr; 452 u32 tmp; 453 int err; 454 455 mutex_lock(&dev->cap_mask_mutex); 456 457 err = mlx5_ib_query_port(ibdev, port, &attr); 458 if (err) 459 goto out; 460 461 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 462 ~props->clr_port_cap_mask; 463 464 err = mlx5_set_port_caps(dev->mdev, port, tmp); 465 466 out: 467 mutex_unlock(&dev->cap_mask_mutex); 468 return err; 469 } 470 471 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, 472 struct ib_udata *udata) 473 { 474 struct mlx5_ib_dev *dev = to_mdev(ibdev); 475 struct mlx5_ib_alloc_ucontext_req_v2 req; 476 struct mlx5_ib_alloc_ucontext_resp resp; 477 struct mlx5_ib_ucontext *context; 478 struct mlx5_general_caps *gen; 479 struct mlx5_uuar_info *uuari; 480 struct mlx5_uar *uars; 481 int gross_uuars; 482 int num_uars; 483 int ver; 484 int uuarn; 485 int err; 486 int i; 487 size_t reqlen; 488 489 gen = &dev->mdev->caps.gen; 490 if (!dev->ib_active) 491 return ERR_PTR(-EAGAIN); 492 493 memset(&req, 0, sizeof(req)); 494 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr); 495 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) 496 ver = 0; 497 else if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req_v2)) 498 ver = 2; 499 else 500 return ERR_PTR(-EINVAL); 501 502 err = ib_copy_from_udata(&req, udata, reqlen); 503 if (err) 504 return ERR_PTR(err); 505 506 if (req.flags || req.reserved) 507 return ERR_PTR(-EINVAL); 508 509 if (req.total_num_uuars > MLX5_MAX_UUARS) 510 return ERR_PTR(-ENOMEM); 511 512 if (req.total_num_uuars == 0) 513 return ERR_PTR(-EINVAL); 514 515 req.total_num_uuars = ALIGN(req.total_num_uuars, 516 MLX5_NON_FP_BF_REGS_PER_PAGE); 517 if (req.num_low_latency_uuars > req.total_num_uuars - 1) 518 return ERR_PTR(-EINVAL); 519 520 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE; 521 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE; 522 resp.qp_tab_size = 1 << gen->log_max_qp; 523 resp.bf_reg_size = gen->bf_reg_size; 524 resp.cache_line_size = L1_CACHE_BYTES; 525 resp.max_sq_desc_sz = gen->max_sq_desc_sz; 526 resp.max_rq_desc_sz = gen->max_rq_desc_sz; 527 resp.max_send_wqebb = gen->max_wqes; 528 resp.max_recv_wr = gen->max_wqes; 529 resp.max_srq_recv_wr = gen->max_srq_wqes; 530 531 context = kzalloc(sizeof(*context), GFP_KERNEL); 532 if (!context) 533 return ERR_PTR(-ENOMEM); 534 535 uuari = &context->uuari; 536 mutex_init(&uuari->lock); 537 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL); 538 if (!uars) { 539 err = -ENOMEM; 540 goto out_ctx; 541 } 542 543 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars), 544 sizeof(*uuari->bitmap), 545 GFP_KERNEL); 546 if (!uuari->bitmap) { 547 err = -ENOMEM; 548 goto out_uar_ctx; 549 } 550 /* 551 * clear all fast path uuars 552 */ 553 for (i = 0; i < gross_uuars; i++) { 554 uuarn = i & 3; 555 if (uuarn == 2 || uuarn == 3) 556 set_bit(i, uuari->bitmap); 557 } 558 559 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL); 560 if (!uuari->count) { 561 err = -ENOMEM; 562 goto out_bitmap; 563 } 564 565 for (i = 0; i < num_uars; i++) { 566 err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index); 567 if (err) 568 goto out_count; 569 } 570 571 INIT_LIST_HEAD(&context->db_page_list); 572 mutex_init(&context->db_page_mutex); 573 574 resp.tot_uuars = req.total_num_uuars; 575 resp.num_ports = gen->num_ports; 576 err = ib_copy_to_udata(udata, &resp, 577 sizeof(resp) - sizeof(resp.reserved)); 578 if (err) 579 goto out_uars; 580 581 uuari->ver = ver; 582 uuari->num_low_latency_uuars = req.num_low_latency_uuars; 583 uuari->uars = uars; 584 uuari->num_uars = num_uars; 585 return &context->ibucontext; 586 587 out_uars: 588 for (i--; i >= 0; i--) 589 mlx5_cmd_free_uar(dev->mdev, uars[i].index); 590 out_count: 591 kfree(uuari->count); 592 593 out_bitmap: 594 kfree(uuari->bitmap); 595 596 out_uar_ctx: 597 kfree(uars); 598 599 out_ctx: 600 kfree(context); 601 return ERR_PTR(err); 602 } 603 604 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 605 { 606 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 607 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 608 struct mlx5_uuar_info *uuari = &context->uuari; 609 int i; 610 611 for (i = 0; i < uuari->num_uars; i++) { 612 if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index)) 613 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index); 614 } 615 616 kfree(uuari->count); 617 kfree(uuari->bitmap); 618 kfree(uuari->uars); 619 kfree(context); 620 621 return 0; 622 } 623 624 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index) 625 { 626 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index; 627 } 628 629 static int get_command(unsigned long offset) 630 { 631 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 632 } 633 634 static int get_arg(unsigned long offset) 635 { 636 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 637 } 638 639 static int get_index(unsigned long offset) 640 { 641 return get_arg(offset); 642 } 643 644 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 645 { 646 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 647 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 648 struct mlx5_uuar_info *uuari = &context->uuari; 649 unsigned long command; 650 unsigned long idx; 651 phys_addr_t pfn; 652 653 command = get_command(vma->vm_pgoff); 654 switch (command) { 655 case MLX5_IB_MMAP_REGULAR_PAGE: 656 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 657 return -EINVAL; 658 659 idx = get_index(vma->vm_pgoff); 660 if (idx >= uuari->num_uars) 661 return -EINVAL; 662 663 pfn = uar_index2pfn(dev, uuari->uars[idx].index); 664 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx, 665 (unsigned long long)pfn); 666 667 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 668 if (io_remap_pfn_range(vma, vma->vm_start, pfn, 669 PAGE_SIZE, vma->vm_page_prot)) 670 return -EAGAIN; 671 672 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n", 673 vma->vm_start, 674 (unsigned long long)pfn << PAGE_SHIFT); 675 break; 676 677 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 678 return -ENOSYS; 679 680 default: 681 return -EINVAL; 682 } 683 684 return 0; 685 } 686 687 static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn) 688 { 689 struct mlx5_create_mkey_mbox_in *in; 690 struct mlx5_mkey_seg *seg; 691 struct mlx5_core_mr mr; 692 int err; 693 694 in = kzalloc(sizeof(*in), GFP_KERNEL); 695 if (!in) 696 return -ENOMEM; 697 698 seg = &in->seg; 699 seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA; 700 seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64); 701 seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); 702 seg->start_addr = 0; 703 704 err = mlx5_core_create_mkey(dev->mdev, &mr, in, sizeof(*in), 705 NULL, NULL, NULL); 706 if (err) { 707 mlx5_ib_warn(dev, "failed to create mkey, %d\n", err); 708 goto err_in; 709 } 710 711 kfree(in); 712 *key = mr.key; 713 714 return 0; 715 716 err_in: 717 kfree(in); 718 719 return err; 720 } 721 722 static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key) 723 { 724 struct mlx5_core_mr mr; 725 int err; 726 727 memset(&mr, 0, sizeof(mr)); 728 mr.key = key; 729 err = mlx5_core_destroy_mkey(dev->mdev, &mr); 730 if (err) 731 mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key); 732 } 733 734 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev, 735 struct ib_ucontext *context, 736 struct ib_udata *udata) 737 { 738 struct mlx5_ib_alloc_pd_resp resp; 739 struct mlx5_ib_pd *pd; 740 int err; 741 742 pd = kmalloc(sizeof(*pd), GFP_KERNEL); 743 if (!pd) 744 return ERR_PTR(-ENOMEM); 745 746 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn); 747 if (err) { 748 kfree(pd); 749 return ERR_PTR(err); 750 } 751 752 if (context) { 753 resp.pdn = pd->pdn; 754 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 755 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn); 756 kfree(pd); 757 return ERR_PTR(-EFAULT); 758 } 759 } else { 760 err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn); 761 if (err) { 762 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn); 763 kfree(pd); 764 return ERR_PTR(err); 765 } 766 } 767 768 return &pd->ibpd; 769 } 770 771 static int mlx5_ib_dealloc_pd(struct ib_pd *pd) 772 { 773 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 774 struct mlx5_ib_pd *mpd = to_mpd(pd); 775 776 if (!pd->uobject) 777 free_pa_mkey(mdev, mpd->pa_lkey); 778 779 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn); 780 kfree(mpd); 781 782 return 0; 783 } 784 785 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 786 { 787 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 788 int err; 789 790 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num); 791 if (err) 792 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 793 ibqp->qp_num, gid->raw); 794 795 return err; 796 } 797 798 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 799 { 800 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 801 int err; 802 803 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num); 804 if (err) 805 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 806 ibqp->qp_num, gid->raw); 807 808 return err; 809 } 810 811 static int init_node_data(struct mlx5_ib_dev *dev) 812 { 813 struct ib_smp *in_mad = NULL; 814 struct ib_smp *out_mad = NULL; 815 int err = -ENOMEM; 816 817 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 818 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 819 if (!in_mad || !out_mad) 820 goto out; 821 822 init_query_mad(in_mad); 823 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 824 825 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 826 if (err) 827 goto out; 828 829 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 830 831 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 832 833 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 834 if (err) 835 goto out; 836 837 dev->mdev->rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32)); 838 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 839 840 out: 841 kfree(in_mad); 842 kfree(out_mad); 843 return err; 844 } 845 846 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr, 847 char *buf) 848 { 849 struct mlx5_ib_dev *dev = 850 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 851 852 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages); 853 } 854 855 static ssize_t show_reg_pages(struct device *device, 856 struct device_attribute *attr, char *buf) 857 { 858 struct mlx5_ib_dev *dev = 859 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 860 861 return sprintf(buf, "%d\n", dev->mdev->priv.reg_pages); 862 } 863 864 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 865 char *buf) 866 { 867 struct mlx5_ib_dev *dev = 868 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 869 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device); 870 } 871 872 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 873 char *buf) 874 { 875 struct mlx5_ib_dev *dev = 876 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 877 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(dev->mdev), 878 fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev)); 879 } 880 881 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 882 char *buf) 883 { 884 struct mlx5_ib_dev *dev = 885 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 886 return sprintf(buf, "%x\n", dev->mdev->rev_id); 887 } 888 889 static ssize_t show_board(struct device *device, struct device_attribute *attr, 890 char *buf) 891 { 892 struct mlx5_ib_dev *dev = 893 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 894 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 895 dev->mdev->board_id); 896 } 897 898 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 899 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 900 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 901 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 902 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL); 903 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL); 904 905 static struct device_attribute *mlx5_class_attributes[] = { 906 &dev_attr_hw_rev, 907 &dev_attr_fw_ver, 908 &dev_attr_hca_type, 909 &dev_attr_board_id, 910 &dev_attr_fw_pages, 911 &dev_attr_reg_pages, 912 }; 913 914 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context, 915 enum mlx5_dev_event event, unsigned long param) 916 { 917 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context; 918 struct ib_event ibev; 919 920 u8 port = 0; 921 922 switch (event) { 923 case MLX5_DEV_EVENT_SYS_ERROR: 924 ibdev->ib_active = false; 925 ibev.event = IB_EVENT_DEVICE_FATAL; 926 break; 927 928 case MLX5_DEV_EVENT_PORT_UP: 929 ibev.event = IB_EVENT_PORT_ACTIVE; 930 port = (u8)param; 931 break; 932 933 case MLX5_DEV_EVENT_PORT_DOWN: 934 ibev.event = IB_EVENT_PORT_ERR; 935 port = (u8)param; 936 break; 937 938 case MLX5_DEV_EVENT_PORT_INITIALIZED: 939 /* not used by ULPs */ 940 return; 941 942 case MLX5_DEV_EVENT_LID_CHANGE: 943 ibev.event = IB_EVENT_LID_CHANGE; 944 port = (u8)param; 945 break; 946 947 case MLX5_DEV_EVENT_PKEY_CHANGE: 948 ibev.event = IB_EVENT_PKEY_CHANGE; 949 port = (u8)param; 950 break; 951 952 case MLX5_DEV_EVENT_GUID_CHANGE: 953 ibev.event = IB_EVENT_GID_CHANGE; 954 port = (u8)param; 955 break; 956 957 case MLX5_DEV_EVENT_CLIENT_REREG: 958 ibev.event = IB_EVENT_CLIENT_REREGISTER; 959 port = (u8)param; 960 break; 961 } 962 963 ibev.device = &ibdev->ib_dev; 964 ibev.element.port_num = port; 965 966 if (port < 1 || port > ibdev->num_ports) { 967 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port); 968 return; 969 } 970 971 if (ibdev->ib_active) 972 ib_dispatch_event(&ibev); 973 } 974 975 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 976 { 977 struct mlx5_general_caps *gen; 978 int port; 979 980 gen = &dev->mdev->caps.gen; 981 for (port = 1; port <= gen->num_ports; port++) 982 mlx5_query_ext_port_caps(dev, port); 983 } 984 985 static int get_port_caps(struct mlx5_ib_dev *dev) 986 { 987 struct ib_device_attr *dprops = NULL; 988 struct ib_port_attr *pprops = NULL; 989 struct mlx5_general_caps *gen; 990 int err = 0; 991 int port; 992 993 gen = &dev->mdev->caps.gen; 994 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL); 995 if (!pprops) 996 goto out; 997 998 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL); 999 if (!dprops) 1000 goto out; 1001 1002 err = mlx5_ib_query_device(&dev->ib_dev, dprops); 1003 if (err) { 1004 mlx5_ib_warn(dev, "query_device failed %d\n", err); 1005 goto out; 1006 } 1007 1008 for (port = 1; port <= gen->num_ports; port++) { 1009 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops); 1010 if (err) { 1011 mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err); 1012 break; 1013 } 1014 gen->port[port - 1].pkey_table_len = dprops->max_pkeys; 1015 gen->port[port - 1].gid_table_len = pprops->gid_tbl_len; 1016 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n", 1017 dprops->max_pkeys, pprops->gid_tbl_len); 1018 } 1019 1020 out: 1021 kfree(pprops); 1022 kfree(dprops); 1023 1024 return err; 1025 } 1026 1027 static void destroy_umrc_res(struct mlx5_ib_dev *dev) 1028 { 1029 int err; 1030 1031 err = mlx5_mr_cache_cleanup(dev); 1032 if (err) 1033 mlx5_ib_warn(dev, "mr cache cleanup failed\n"); 1034 1035 mlx5_ib_destroy_qp(dev->umrc.qp); 1036 ib_destroy_cq(dev->umrc.cq); 1037 ib_dereg_mr(dev->umrc.mr); 1038 ib_dealloc_pd(dev->umrc.pd); 1039 } 1040 1041 enum { 1042 MAX_UMR_WR = 128, 1043 }; 1044 1045 static int create_umr_res(struct mlx5_ib_dev *dev) 1046 { 1047 struct ib_qp_init_attr *init_attr = NULL; 1048 struct ib_qp_attr *attr = NULL; 1049 struct ib_pd *pd; 1050 struct ib_cq *cq; 1051 struct ib_qp *qp; 1052 struct ib_mr *mr; 1053 int ret; 1054 1055 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1056 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); 1057 if (!attr || !init_attr) { 1058 ret = -ENOMEM; 1059 goto error_0; 1060 } 1061 1062 pd = ib_alloc_pd(&dev->ib_dev); 1063 if (IS_ERR(pd)) { 1064 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n"); 1065 ret = PTR_ERR(pd); 1066 goto error_0; 1067 } 1068 1069 mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE); 1070 if (IS_ERR(mr)) { 1071 mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n"); 1072 ret = PTR_ERR(mr); 1073 goto error_1; 1074 } 1075 1076 cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128, 1077 0); 1078 if (IS_ERR(cq)) { 1079 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n"); 1080 ret = PTR_ERR(cq); 1081 goto error_2; 1082 } 1083 ib_req_notify_cq(cq, IB_CQ_NEXT_COMP); 1084 1085 init_attr->send_cq = cq; 1086 init_attr->recv_cq = cq; 1087 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; 1088 init_attr->cap.max_send_wr = MAX_UMR_WR; 1089 init_attr->cap.max_send_sge = 1; 1090 init_attr->qp_type = MLX5_IB_QPT_REG_UMR; 1091 init_attr->port_num = 1; 1092 qp = mlx5_ib_create_qp(pd, init_attr, NULL); 1093 if (IS_ERR(qp)) { 1094 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n"); 1095 ret = PTR_ERR(qp); 1096 goto error_3; 1097 } 1098 qp->device = &dev->ib_dev; 1099 qp->real_qp = qp; 1100 qp->uobject = NULL; 1101 qp->qp_type = MLX5_IB_QPT_REG_UMR; 1102 1103 attr->qp_state = IB_QPS_INIT; 1104 attr->port_num = 1; 1105 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | 1106 IB_QP_PORT, NULL); 1107 if (ret) { 1108 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n"); 1109 goto error_4; 1110 } 1111 1112 memset(attr, 0, sizeof(*attr)); 1113 attr->qp_state = IB_QPS_RTR; 1114 attr->path_mtu = IB_MTU_256; 1115 1116 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 1117 if (ret) { 1118 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n"); 1119 goto error_4; 1120 } 1121 1122 memset(attr, 0, sizeof(*attr)); 1123 attr->qp_state = IB_QPS_RTS; 1124 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 1125 if (ret) { 1126 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n"); 1127 goto error_4; 1128 } 1129 1130 dev->umrc.qp = qp; 1131 dev->umrc.cq = cq; 1132 dev->umrc.mr = mr; 1133 dev->umrc.pd = pd; 1134 1135 sema_init(&dev->umrc.sem, MAX_UMR_WR); 1136 ret = mlx5_mr_cache_init(dev); 1137 if (ret) { 1138 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 1139 goto error_4; 1140 } 1141 1142 kfree(attr); 1143 kfree(init_attr); 1144 1145 return 0; 1146 1147 error_4: 1148 mlx5_ib_destroy_qp(qp); 1149 1150 error_3: 1151 ib_destroy_cq(cq); 1152 1153 error_2: 1154 ib_dereg_mr(mr); 1155 1156 error_1: 1157 ib_dealloc_pd(pd); 1158 1159 error_0: 1160 kfree(attr); 1161 kfree(init_attr); 1162 return ret; 1163 } 1164 1165 static int create_dev_resources(struct mlx5_ib_resources *devr) 1166 { 1167 struct ib_srq_init_attr attr; 1168 struct mlx5_ib_dev *dev; 1169 int ret = 0; 1170 1171 dev = container_of(devr, struct mlx5_ib_dev, devr); 1172 1173 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL); 1174 if (IS_ERR(devr->p0)) { 1175 ret = PTR_ERR(devr->p0); 1176 goto error0; 1177 } 1178 devr->p0->device = &dev->ib_dev; 1179 devr->p0->uobject = NULL; 1180 atomic_set(&devr->p0->usecnt, 0); 1181 1182 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL); 1183 if (IS_ERR(devr->c0)) { 1184 ret = PTR_ERR(devr->c0); 1185 goto error1; 1186 } 1187 devr->c0->device = &dev->ib_dev; 1188 devr->c0->uobject = NULL; 1189 devr->c0->comp_handler = NULL; 1190 devr->c0->event_handler = NULL; 1191 devr->c0->cq_context = NULL; 1192 atomic_set(&devr->c0->usecnt, 0); 1193 1194 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 1195 if (IS_ERR(devr->x0)) { 1196 ret = PTR_ERR(devr->x0); 1197 goto error2; 1198 } 1199 devr->x0->device = &dev->ib_dev; 1200 devr->x0->inode = NULL; 1201 atomic_set(&devr->x0->usecnt, 0); 1202 mutex_init(&devr->x0->tgt_qp_mutex); 1203 INIT_LIST_HEAD(&devr->x0->tgt_qp_list); 1204 1205 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 1206 if (IS_ERR(devr->x1)) { 1207 ret = PTR_ERR(devr->x1); 1208 goto error3; 1209 } 1210 devr->x1->device = &dev->ib_dev; 1211 devr->x1->inode = NULL; 1212 atomic_set(&devr->x1->usecnt, 0); 1213 mutex_init(&devr->x1->tgt_qp_mutex); 1214 INIT_LIST_HEAD(&devr->x1->tgt_qp_list); 1215 1216 memset(&attr, 0, sizeof(attr)); 1217 attr.attr.max_sge = 1; 1218 attr.attr.max_wr = 1; 1219 attr.srq_type = IB_SRQT_XRC; 1220 attr.ext.xrc.cq = devr->c0; 1221 attr.ext.xrc.xrcd = devr->x0; 1222 1223 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL); 1224 if (IS_ERR(devr->s0)) { 1225 ret = PTR_ERR(devr->s0); 1226 goto error4; 1227 } 1228 devr->s0->device = &dev->ib_dev; 1229 devr->s0->pd = devr->p0; 1230 devr->s0->uobject = NULL; 1231 devr->s0->event_handler = NULL; 1232 devr->s0->srq_context = NULL; 1233 devr->s0->srq_type = IB_SRQT_XRC; 1234 devr->s0->ext.xrc.xrcd = devr->x0; 1235 devr->s0->ext.xrc.cq = devr->c0; 1236 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt); 1237 atomic_inc(&devr->s0->ext.xrc.cq->usecnt); 1238 atomic_inc(&devr->p0->usecnt); 1239 atomic_set(&devr->s0->usecnt, 0); 1240 1241 return 0; 1242 1243 error4: 1244 mlx5_ib_dealloc_xrcd(devr->x1); 1245 error3: 1246 mlx5_ib_dealloc_xrcd(devr->x0); 1247 error2: 1248 mlx5_ib_destroy_cq(devr->c0); 1249 error1: 1250 mlx5_ib_dealloc_pd(devr->p0); 1251 error0: 1252 return ret; 1253 } 1254 1255 static void destroy_dev_resources(struct mlx5_ib_resources *devr) 1256 { 1257 mlx5_ib_destroy_srq(devr->s0); 1258 mlx5_ib_dealloc_xrcd(devr->x0); 1259 mlx5_ib_dealloc_xrcd(devr->x1); 1260 mlx5_ib_destroy_cq(devr->c0); 1261 mlx5_ib_dealloc_pd(devr->p0); 1262 } 1263 1264 static void *mlx5_ib_add(struct mlx5_core_dev *mdev) 1265 { 1266 struct mlx5_ib_dev *dev; 1267 int err; 1268 int i; 1269 1270 printk_once(KERN_INFO "%s", mlx5_version); 1271 1272 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev)); 1273 if (!dev) 1274 return NULL; 1275 1276 dev->mdev = mdev; 1277 1278 err = get_port_caps(dev); 1279 if (err) 1280 goto err_dealloc; 1281 1282 get_ext_port_caps(dev); 1283 1284 err = alloc_comp_eqs(dev); 1285 if (err) 1286 goto err_dealloc; 1287 1288 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock); 1289 1290 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX); 1291 dev->ib_dev.owner = THIS_MODULE; 1292 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1293 dev->ib_dev.local_dma_lkey = mdev->caps.gen.reserved_lkey; 1294 dev->num_ports = mdev->caps.gen.num_ports; 1295 dev->ib_dev.phys_port_cnt = dev->num_ports; 1296 dev->ib_dev.num_comp_vectors = dev->num_comp_vectors; 1297 dev->ib_dev.dma_device = &mdev->pdev->dev; 1298 1299 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION; 1300 dev->ib_dev.uverbs_cmd_mask = 1301 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1302 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1303 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1304 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1305 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1306 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1307 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1308 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1309 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1310 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1311 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1312 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1313 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1314 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1315 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1316 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1317 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1318 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1319 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1320 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1321 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1322 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1323 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1324 1325 dev->ib_dev.query_device = mlx5_ib_query_device; 1326 dev->ib_dev.query_port = mlx5_ib_query_port; 1327 dev->ib_dev.query_gid = mlx5_ib_query_gid; 1328 dev->ib_dev.query_pkey = mlx5_ib_query_pkey; 1329 dev->ib_dev.modify_device = mlx5_ib_modify_device; 1330 dev->ib_dev.modify_port = mlx5_ib_modify_port; 1331 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext; 1332 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext; 1333 dev->ib_dev.mmap = mlx5_ib_mmap; 1334 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd; 1335 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd; 1336 dev->ib_dev.create_ah = mlx5_ib_create_ah; 1337 dev->ib_dev.query_ah = mlx5_ib_query_ah; 1338 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah; 1339 dev->ib_dev.create_srq = mlx5_ib_create_srq; 1340 dev->ib_dev.modify_srq = mlx5_ib_modify_srq; 1341 dev->ib_dev.query_srq = mlx5_ib_query_srq; 1342 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq; 1343 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv; 1344 dev->ib_dev.create_qp = mlx5_ib_create_qp; 1345 dev->ib_dev.modify_qp = mlx5_ib_modify_qp; 1346 dev->ib_dev.query_qp = mlx5_ib_query_qp; 1347 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp; 1348 dev->ib_dev.post_send = mlx5_ib_post_send; 1349 dev->ib_dev.post_recv = mlx5_ib_post_recv; 1350 dev->ib_dev.create_cq = mlx5_ib_create_cq; 1351 dev->ib_dev.modify_cq = mlx5_ib_modify_cq; 1352 dev->ib_dev.resize_cq = mlx5_ib_resize_cq; 1353 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq; 1354 dev->ib_dev.poll_cq = mlx5_ib_poll_cq; 1355 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq; 1356 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr; 1357 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr; 1358 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr; 1359 dev->ib_dev.destroy_mr = mlx5_ib_destroy_mr; 1360 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach; 1361 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach; 1362 dev->ib_dev.process_mad = mlx5_ib_process_mad; 1363 dev->ib_dev.create_mr = mlx5_ib_create_mr; 1364 dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr; 1365 dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list; 1366 dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list; 1367 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status; 1368 1369 if (mdev->caps.gen.flags & MLX5_DEV_CAP_FLAG_XRC) { 1370 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd; 1371 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd; 1372 dev->ib_dev.uverbs_cmd_mask |= 1373 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1374 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1375 } 1376 1377 err = init_node_data(dev); 1378 if (err) 1379 goto err_eqs; 1380 1381 mutex_init(&dev->cap_mask_mutex); 1382 spin_lock_init(&dev->mr_lock); 1383 1384 err = create_dev_resources(&dev->devr); 1385 if (err) 1386 goto err_eqs; 1387 1388 err = ib_register_device(&dev->ib_dev, NULL); 1389 if (err) 1390 goto err_rsrc; 1391 1392 err = create_umr_res(dev); 1393 if (err) 1394 goto err_dev; 1395 1396 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) { 1397 err = device_create_file(&dev->ib_dev.dev, 1398 mlx5_class_attributes[i]); 1399 if (err) 1400 goto err_umrc; 1401 } 1402 1403 dev->ib_active = true; 1404 1405 return dev; 1406 1407 err_umrc: 1408 destroy_umrc_res(dev); 1409 1410 err_dev: 1411 ib_unregister_device(&dev->ib_dev); 1412 1413 err_rsrc: 1414 destroy_dev_resources(&dev->devr); 1415 1416 err_eqs: 1417 free_comp_eqs(dev); 1418 1419 err_dealloc: 1420 ib_dealloc_device((struct ib_device *)dev); 1421 1422 return NULL; 1423 } 1424 1425 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context) 1426 { 1427 struct mlx5_ib_dev *dev = context; 1428 ib_unregister_device(&dev->ib_dev); 1429 destroy_umrc_res(dev); 1430 destroy_dev_resources(&dev->devr); 1431 free_comp_eqs(dev); 1432 ib_dealloc_device(&dev->ib_dev); 1433 } 1434 1435 static struct mlx5_interface mlx5_ib_interface = { 1436 .add = mlx5_ib_add, 1437 .remove = mlx5_ib_remove, 1438 .event = mlx5_ib_event, 1439 }; 1440 1441 static int __init mlx5_ib_init(void) 1442 { 1443 if (deprecated_prof_sel != 2) 1444 pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n"); 1445 1446 return mlx5_register_interface(&mlx5_ib_interface); 1447 } 1448 1449 static void __exit mlx5_ib_cleanup(void) 1450 { 1451 mlx5_unregister_interface(&mlx5_ib_interface); 1452 } 1453 1454 module_init(mlx5_ib_init); 1455 module_exit(mlx5_ib_cleanup); 1456