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 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 248 if (dev->mdev->caps.gen.flags & MLX5_DEV_CAP_FLAG_ON_DMND_PG) 249 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING; 250 props->odp_caps = dev->odp_caps; 251 #endif 252 253 out: 254 kfree(in_mad); 255 kfree(out_mad); 256 257 return err; 258 } 259 260 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port, 261 struct ib_port_attr *props) 262 { 263 struct mlx5_ib_dev *dev = to_mdev(ibdev); 264 struct ib_smp *in_mad = NULL; 265 struct ib_smp *out_mad = NULL; 266 struct mlx5_general_caps *gen; 267 int ext_active_speed; 268 int err = -ENOMEM; 269 270 gen = &dev->mdev->caps.gen; 271 if (port < 1 || port > gen->num_ports) { 272 mlx5_ib_warn(dev, "invalid port number %d\n", port); 273 return -EINVAL; 274 } 275 276 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 277 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 278 if (!in_mad || !out_mad) 279 goto out; 280 281 memset(props, 0, sizeof(*props)); 282 283 init_query_mad(in_mad); 284 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 285 in_mad->attr_mod = cpu_to_be32(port); 286 287 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 288 if (err) { 289 mlx5_ib_warn(dev, "err %d\n", err); 290 goto out; 291 } 292 293 294 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 295 props->lmc = out_mad->data[34] & 0x7; 296 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 297 props->sm_sl = out_mad->data[36] & 0xf; 298 props->state = out_mad->data[32] & 0xf; 299 props->phys_state = out_mad->data[33] >> 4; 300 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 301 props->gid_tbl_len = out_mad->data[50]; 302 props->max_msg_sz = 1 << gen->log_max_msg; 303 props->pkey_tbl_len = gen->port[port - 1].pkey_table_len; 304 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 305 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 306 props->active_width = out_mad->data[31] & 0xf; 307 props->active_speed = out_mad->data[35] >> 4; 308 props->max_mtu = out_mad->data[41] & 0xf; 309 props->active_mtu = out_mad->data[36] >> 4; 310 props->subnet_timeout = out_mad->data[51] & 0x1f; 311 props->max_vl_num = out_mad->data[37] >> 4; 312 props->init_type_reply = out_mad->data[41] >> 4; 313 314 /* Check if extended speeds (EDR/FDR/...) are supported */ 315 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 316 ext_active_speed = out_mad->data[62] >> 4; 317 318 switch (ext_active_speed) { 319 case 1: 320 props->active_speed = 16; /* FDR */ 321 break; 322 case 2: 323 props->active_speed = 32; /* EDR */ 324 break; 325 } 326 } 327 328 /* If reported active speed is QDR, check if is FDR-10 */ 329 if (props->active_speed == 4) { 330 if (gen->ext_port_cap[port - 1] & 331 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 332 init_query_mad(in_mad); 333 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 334 in_mad->attr_mod = cpu_to_be32(port); 335 336 err = mlx5_MAD_IFC(dev, 1, 1, port, 337 NULL, NULL, in_mad, out_mad); 338 if (err) 339 goto out; 340 341 /* Checking LinkSpeedActive for FDR-10 */ 342 if (out_mad->data[15] & 0x1) 343 props->active_speed = 8; 344 } 345 } 346 347 out: 348 kfree(in_mad); 349 kfree(out_mad); 350 351 return err; 352 } 353 354 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 355 union ib_gid *gid) 356 { 357 struct ib_smp *in_mad = NULL; 358 struct ib_smp *out_mad = NULL; 359 int err = -ENOMEM; 360 361 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 362 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 363 if (!in_mad || !out_mad) 364 goto out; 365 366 init_query_mad(in_mad); 367 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 368 in_mad->attr_mod = cpu_to_be32(port); 369 370 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 371 if (err) 372 goto out; 373 374 memcpy(gid->raw, out_mad->data + 8, 8); 375 376 init_query_mad(in_mad); 377 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 378 in_mad->attr_mod = cpu_to_be32(index / 8); 379 380 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 381 if (err) 382 goto out; 383 384 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 385 386 out: 387 kfree(in_mad); 388 kfree(out_mad); 389 return err; 390 } 391 392 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 393 u16 *pkey) 394 { 395 struct ib_smp *in_mad = NULL; 396 struct ib_smp *out_mad = NULL; 397 int err = -ENOMEM; 398 399 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 400 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 401 if (!in_mad || !out_mad) 402 goto out; 403 404 init_query_mad(in_mad); 405 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 406 in_mad->attr_mod = cpu_to_be32(index / 32); 407 408 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); 409 if (err) 410 goto out; 411 412 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 413 414 out: 415 kfree(in_mad); 416 kfree(out_mad); 417 return err; 418 } 419 420 struct mlx5_reg_node_desc { 421 u8 desc[64]; 422 }; 423 424 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 425 struct ib_device_modify *props) 426 { 427 struct mlx5_ib_dev *dev = to_mdev(ibdev); 428 struct mlx5_reg_node_desc in; 429 struct mlx5_reg_node_desc out; 430 int err; 431 432 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 433 return -EOPNOTSUPP; 434 435 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 436 return 0; 437 438 /* 439 * If possible, pass node desc to FW, so it can generate 440 * a 144 trap. If cmd fails, just ignore. 441 */ 442 memcpy(&in, props->node_desc, 64); 443 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, 444 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 445 if (err) 446 return err; 447 448 memcpy(ibdev->node_desc, props->node_desc, 64); 449 450 return err; 451 } 452 453 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 454 struct ib_port_modify *props) 455 { 456 struct mlx5_ib_dev *dev = to_mdev(ibdev); 457 struct ib_port_attr attr; 458 u32 tmp; 459 int err; 460 461 mutex_lock(&dev->cap_mask_mutex); 462 463 err = mlx5_ib_query_port(ibdev, port, &attr); 464 if (err) 465 goto out; 466 467 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 468 ~props->clr_port_cap_mask; 469 470 err = mlx5_set_port_caps(dev->mdev, port, tmp); 471 472 out: 473 mutex_unlock(&dev->cap_mask_mutex); 474 return err; 475 } 476 477 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, 478 struct ib_udata *udata) 479 { 480 struct mlx5_ib_dev *dev = to_mdev(ibdev); 481 struct mlx5_ib_alloc_ucontext_req_v2 req; 482 struct mlx5_ib_alloc_ucontext_resp resp; 483 struct mlx5_ib_ucontext *context; 484 struct mlx5_general_caps *gen; 485 struct mlx5_uuar_info *uuari; 486 struct mlx5_uar *uars; 487 int gross_uuars; 488 int num_uars; 489 int ver; 490 int uuarn; 491 int err; 492 int i; 493 size_t reqlen; 494 495 gen = &dev->mdev->caps.gen; 496 if (!dev->ib_active) 497 return ERR_PTR(-EAGAIN); 498 499 memset(&req, 0, sizeof(req)); 500 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr); 501 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) 502 ver = 0; 503 else if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req_v2)) 504 ver = 2; 505 else 506 return ERR_PTR(-EINVAL); 507 508 err = ib_copy_from_udata(&req, udata, reqlen); 509 if (err) 510 return ERR_PTR(err); 511 512 if (req.flags || req.reserved) 513 return ERR_PTR(-EINVAL); 514 515 if (req.total_num_uuars > MLX5_MAX_UUARS) 516 return ERR_PTR(-ENOMEM); 517 518 if (req.total_num_uuars == 0) 519 return ERR_PTR(-EINVAL); 520 521 req.total_num_uuars = ALIGN(req.total_num_uuars, 522 MLX5_NON_FP_BF_REGS_PER_PAGE); 523 if (req.num_low_latency_uuars > req.total_num_uuars - 1) 524 return ERR_PTR(-EINVAL); 525 526 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE; 527 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE; 528 resp.qp_tab_size = 1 << gen->log_max_qp; 529 resp.bf_reg_size = gen->bf_reg_size; 530 resp.cache_line_size = L1_CACHE_BYTES; 531 resp.max_sq_desc_sz = gen->max_sq_desc_sz; 532 resp.max_rq_desc_sz = gen->max_rq_desc_sz; 533 resp.max_send_wqebb = gen->max_wqes; 534 resp.max_recv_wr = gen->max_wqes; 535 resp.max_srq_recv_wr = gen->max_srq_wqes; 536 537 context = kzalloc(sizeof(*context), GFP_KERNEL); 538 if (!context) 539 return ERR_PTR(-ENOMEM); 540 541 uuari = &context->uuari; 542 mutex_init(&uuari->lock); 543 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL); 544 if (!uars) { 545 err = -ENOMEM; 546 goto out_ctx; 547 } 548 549 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars), 550 sizeof(*uuari->bitmap), 551 GFP_KERNEL); 552 if (!uuari->bitmap) { 553 err = -ENOMEM; 554 goto out_uar_ctx; 555 } 556 /* 557 * clear all fast path uuars 558 */ 559 for (i = 0; i < gross_uuars; i++) { 560 uuarn = i & 3; 561 if (uuarn == 2 || uuarn == 3) 562 set_bit(i, uuari->bitmap); 563 } 564 565 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL); 566 if (!uuari->count) { 567 err = -ENOMEM; 568 goto out_bitmap; 569 } 570 571 for (i = 0; i < num_uars; i++) { 572 err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index); 573 if (err) 574 goto out_count; 575 } 576 577 INIT_LIST_HEAD(&context->db_page_list); 578 mutex_init(&context->db_page_mutex); 579 580 resp.tot_uuars = req.total_num_uuars; 581 resp.num_ports = gen->num_ports; 582 err = ib_copy_to_udata(udata, &resp, 583 sizeof(resp) - sizeof(resp.reserved)); 584 if (err) 585 goto out_uars; 586 587 uuari->ver = ver; 588 uuari->num_low_latency_uuars = req.num_low_latency_uuars; 589 uuari->uars = uars; 590 uuari->num_uars = num_uars; 591 return &context->ibucontext; 592 593 out_uars: 594 for (i--; i >= 0; i--) 595 mlx5_cmd_free_uar(dev->mdev, uars[i].index); 596 out_count: 597 kfree(uuari->count); 598 599 out_bitmap: 600 kfree(uuari->bitmap); 601 602 out_uar_ctx: 603 kfree(uars); 604 605 out_ctx: 606 kfree(context); 607 return ERR_PTR(err); 608 } 609 610 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 611 { 612 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 613 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 614 struct mlx5_uuar_info *uuari = &context->uuari; 615 int i; 616 617 for (i = 0; i < uuari->num_uars; i++) { 618 if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index)) 619 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index); 620 } 621 622 kfree(uuari->count); 623 kfree(uuari->bitmap); 624 kfree(uuari->uars); 625 kfree(context); 626 627 return 0; 628 } 629 630 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index) 631 { 632 return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index; 633 } 634 635 static int get_command(unsigned long offset) 636 { 637 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 638 } 639 640 static int get_arg(unsigned long offset) 641 { 642 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 643 } 644 645 static int get_index(unsigned long offset) 646 { 647 return get_arg(offset); 648 } 649 650 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 651 { 652 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 653 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 654 struct mlx5_uuar_info *uuari = &context->uuari; 655 unsigned long command; 656 unsigned long idx; 657 phys_addr_t pfn; 658 659 command = get_command(vma->vm_pgoff); 660 switch (command) { 661 case MLX5_IB_MMAP_REGULAR_PAGE: 662 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 663 return -EINVAL; 664 665 idx = get_index(vma->vm_pgoff); 666 if (idx >= uuari->num_uars) 667 return -EINVAL; 668 669 pfn = uar_index2pfn(dev, uuari->uars[idx].index); 670 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx, 671 (unsigned long long)pfn); 672 673 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 674 if (io_remap_pfn_range(vma, vma->vm_start, pfn, 675 PAGE_SIZE, vma->vm_page_prot)) 676 return -EAGAIN; 677 678 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n", 679 vma->vm_start, 680 (unsigned long long)pfn << PAGE_SHIFT); 681 break; 682 683 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 684 return -ENOSYS; 685 686 default: 687 return -EINVAL; 688 } 689 690 return 0; 691 } 692 693 static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn) 694 { 695 struct mlx5_create_mkey_mbox_in *in; 696 struct mlx5_mkey_seg *seg; 697 struct mlx5_core_mr mr; 698 int err; 699 700 in = kzalloc(sizeof(*in), GFP_KERNEL); 701 if (!in) 702 return -ENOMEM; 703 704 seg = &in->seg; 705 seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA; 706 seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64); 707 seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); 708 seg->start_addr = 0; 709 710 err = mlx5_core_create_mkey(dev->mdev, &mr, in, sizeof(*in), 711 NULL, NULL, NULL); 712 if (err) { 713 mlx5_ib_warn(dev, "failed to create mkey, %d\n", err); 714 goto err_in; 715 } 716 717 kfree(in); 718 *key = mr.key; 719 720 return 0; 721 722 err_in: 723 kfree(in); 724 725 return err; 726 } 727 728 static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key) 729 { 730 struct mlx5_core_mr mr; 731 int err; 732 733 memset(&mr, 0, sizeof(mr)); 734 mr.key = key; 735 err = mlx5_core_destroy_mkey(dev->mdev, &mr); 736 if (err) 737 mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key); 738 } 739 740 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev, 741 struct ib_ucontext *context, 742 struct ib_udata *udata) 743 { 744 struct mlx5_ib_alloc_pd_resp resp; 745 struct mlx5_ib_pd *pd; 746 int err; 747 748 pd = kmalloc(sizeof(*pd), GFP_KERNEL); 749 if (!pd) 750 return ERR_PTR(-ENOMEM); 751 752 err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn); 753 if (err) { 754 kfree(pd); 755 return ERR_PTR(err); 756 } 757 758 if (context) { 759 resp.pdn = pd->pdn; 760 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 761 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn); 762 kfree(pd); 763 return ERR_PTR(-EFAULT); 764 } 765 } else { 766 err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn); 767 if (err) { 768 mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn); 769 kfree(pd); 770 return ERR_PTR(err); 771 } 772 } 773 774 return &pd->ibpd; 775 } 776 777 static int mlx5_ib_dealloc_pd(struct ib_pd *pd) 778 { 779 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 780 struct mlx5_ib_pd *mpd = to_mpd(pd); 781 782 if (!pd->uobject) 783 free_pa_mkey(mdev, mpd->pa_lkey); 784 785 mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn); 786 kfree(mpd); 787 788 return 0; 789 } 790 791 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 792 { 793 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 794 int err; 795 796 err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num); 797 if (err) 798 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 799 ibqp->qp_num, gid->raw); 800 801 return err; 802 } 803 804 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 805 { 806 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 807 int err; 808 809 err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num); 810 if (err) 811 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 812 ibqp->qp_num, gid->raw); 813 814 return err; 815 } 816 817 static int init_node_data(struct mlx5_ib_dev *dev) 818 { 819 struct ib_smp *in_mad = NULL; 820 struct ib_smp *out_mad = NULL; 821 int err = -ENOMEM; 822 823 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 824 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 825 if (!in_mad || !out_mad) 826 goto out; 827 828 init_query_mad(in_mad); 829 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 830 831 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 832 if (err) 833 goto out; 834 835 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 836 837 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 838 839 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 840 if (err) 841 goto out; 842 843 dev->mdev->rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32)); 844 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 845 846 out: 847 kfree(in_mad); 848 kfree(out_mad); 849 return err; 850 } 851 852 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr, 853 char *buf) 854 { 855 struct mlx5_ib_dev *dev = 856 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 857 858 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages); 859 } 860 861 static ssize_t show_reg_pages(struct device *device, 862 struct device_attribute *attr, char *buf) 863 { 864 struct mlx5_ib_dev *dev = 865 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 866 867 return sprintf(buf, "%d\n", dev->mdev->priv.reg_pages); 868 } 869 870 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 871 char *buf) 872 { 873 struct mlx5_ib_dev *dev = 874 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 875 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device); 876 } 877 878 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 879 char *buf) 880 { 881 struct mlx5_ib_dev *dev = 882 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 883 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(dev->mdev), 884 fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev)); 885 } 886 887 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 888 char *buf) 889 { 890 struct mlx5_ib_dev *dev = 891 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 892 return sprintf(buf, "%x\n", dev->mdev->rev_id); 893 } 894 895 static ssize_t show_board(struct device *device, struct device_attribute *attr, 896 char *buf) 897 { 898 struct mlx5_ib_dev *dev = 899 container_of(device, struct mlx5_ib_dev, ib_dev.dev); 900 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 901 dev->mdev->board_id); 902 } 903 904 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 905 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 906 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 907 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 908 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL); 909 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL); 910 911 static struct device_attribute *mlx5_class_attributes[] = { 912 &dev_attr_hw_rev, 913 &dev_attr_fw_ver, 914 &dev_attr_hca_type, 915 &dev_attr_board_id, 916 &dev_attr_fw_pages, 917 &dev_attr_reg_pages, 918 }; 919 920 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context, 921 enum mlx5_dev_event event, unsigned long param) 922 { 923 struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context; 924 struct ib_event ibev; 925 926 u8 port = 0; 927 928 switch (event) { 929 case MLX5_DEV_EVENT_SYS_ERROR: 930 ibdev->ib_active = false; 931 ibev.event = IB_EVENT_DEVICE_FATAL; 932 break; 933 934 case MLX5_DEV_EVENT_PORT_UP: 935 ibev.event = IB_EVENT_PORT_ACTIVE; 936 port = (u8)param; 937 break; 938 939 case MLX5_DEV_EVENT_PORT_DOWN: 940 ibev.event = IB_EVENT_PORT_ERR; 941 port = (u8)param; 942 break; 943 944 case MLX5_DEV_EVENT_PORT_INITIALIZED: 945 /* not used by ULPs */ 946 return; 947 948 case MLX5_DEV_EVENT_LID_CHANGE: 949 ibev.event = IB_EVENT_LID_CHANGE; 950 port = (u8)param; 951 break; 952 953 case MLX5_DEV_EVENT_PKEY_CHANGE: 954 ibev.event = IB_EVENT_PKEY_CHANGE; 955 port = (u8)param; 956 break; 957 958 case MLX5_DEV_EVENT_GUID_CHANGE: 959 ibev.event = IB_EVENT_GID_CHANGE; 960 port = (u8)param; 961 break; 962 963 case MLX5_DEV_EVENT_CLIENT_REREG: 964 ibev.event = IB_EVENT_CLIENT_REREGISTER; 965 port = (u8)param; 966 break; 967 } 968 969 ibev.device = &ibdev->ib_dev; 970 ibev.element.port_num = port; 971 972 if (port < 1 || port > ibdev->num_ports) { 973 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port); 974 return; 975 } 976 977 if (ibdev->ib_active) 978 ib_dispatch_event(&ibev); 979 } 980 981 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 982 { 983 struct mlx5_general_caps *gen; 984 int port; 985 986 gen = &dev->mdev->caps.gen; 987 for (port = 1; port <= gen->num_ports; port++) 988 mlx5_query_ext_port_caps(dev, port); 989 } 990 991 static int get_port_caps(struct mlx5_ib_dev *dev) 992 { 993 struct ib_device_attr *dprops = NULL; 994 struct ib_port_attr *pprops = NULL; 995 struct mlx5_general_caps *gen; 996 int err = 0; 997 int port; 998 999 gen = &dev->mdev->caps.gen; 1000 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL); 1001 if (!pprops) 1002 goto out; 1003 1004 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL); 1005 if (!dprops) 1006 goto out; 1007 1008 err = mlx5_ib_query_device(&dev->ib_dev, dprops); 1009 if (err) { 1010 mlx5_ib_warn(dev, "query_device failed %d\n", err); 1011 goto out; 1012 } 1013 1014 for (port = 1; port <= gen->num_ports; port++) { 1015 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops); 1016 if (err) { 1017 mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err); 1018 break; 1019 } 1020 gen->port[port - 1].pkey_table_len = dprops->max_pkeys; 1021 gen->port[port - 1].gid_table_len = pprops->gid_tbl_len; 1022 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n", 1023 dprops->max_pkeys, pprops->gid_tbl_len); 1024 } 1025 1026 out: 1027 kfree(pprops); 1028 kfree(dprops); 1029 1030 return err; 1031 } 1032 1033 static void destroy_umrc_res(struct mlx5_ib_dev *dev) 1034 { 1035 int err; 1036 1037 err = mlx5_mr_cache_cleanup(dev); 1038 if (err) 1039 mlx5_ib_warn(dev, "mr cache cleanup failed\n"); 1040 1041 mlx5_ib_destroy_qp(dev->umrc.qp); 1042 ib_destroy_cq(dev->umrc.cq); 1043 ib_dereg_mr(dev->umrc.mr); 1044 ib_dealloc_pd(dev->umrc.pd); 1045 } 1046 1047 enum { 1048 MAX_UMR_WR = 128, 1049 }; 1050 1051 static int create_umr_res(struct mlx5_ib_dev *dev) 1052 { 1053 struct ib_qp_init_attr *init_attr = NULL; 1054 struct ib_qp_attr *attr = NULL; 1055 struct ib_pd *pd; 1056 struct ib_cq *cq; 1057 struct ib_qp *qp; 1058 struct ib_mr *mr; 1059 int ret; 1060 1061 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1062 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); 1063 if (!attr || !init_attr) { 1064 ret = -ENOMEM; 1065 goto error_0; 1066 } 1067 1068 pd = ib_alloc_pd(&dev->ib_dev); 1069 if (IS_ERR(pd)) { 1070 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n"); 1071 ret = PTR_ERR(pd); 1072 goto error_0; 1073 } 1074 1075 mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE); 1076 if (IS_ERR(mr)) { 1077 mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n"); 1078 ret = PTR_ERR(mr); 1079 goto error_1; 1080 } 1081 1082 cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128, 1083 0); 1084 if (IS_ERR(cq)) { 1085 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n"); 1086 ret = PTR_ERR(cq); 1087 goto error_2; 1088 } 1089 ib_req_notify_cq(cq, IB_CQ_NEXT_COMP); 1090 1091 init_attr->send_cq = cq; 1092 init_attr->recv_cq = cq; 1093 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; 1094 init_attr->cap.max_send_wr = MAX_UMR_WR; 1095 init_attr->cap.max_send_sge = 1; 1096 init_attr->qp_type = MLX5_IB_QPT_REG_UMR; 1097 init_attr->port_num = 1; 1098 qp = mlx5_ib_create_qp(pd, init_attr, NULL); 1099 if (IS_ERR(qp)) { 1100 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n"); 1101 ret = PTR_ERR(qp); 1102 goto error_3; 1103 } 1104 qp->device = &dev->ib_dev; 1105 qp->real_qp = qp; 1106 qp->uobject = NULL; 1107 qp->qp_type = MLX5_IB_QPT_REG_UMR; 1108 1109 attr->qp_state = IB_QPS_INIT; 1110 attr->port_num = 1; 1111 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | 1112 IB_QP_PORT, NULL); 1113 if (ret) { 1114 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n"); 1115 goto error_4; 1116 } 1117 1118 memset(attr, 0, sizeof(*attr)); 1119 attr->qp_state = IB_QPS_RTR; 1120 attr->path_mtu = IB_MTU_256; 1121 1122 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 1123 if (ret) { 1124 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n"); 1125 goto error_4; 1126 } 1127 1128 memset(attr, 0, sizeof(*attr)); 1129 attr->qp_state = IB_QPS_RTS; 1130 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 1131 if (ret) { 1132 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n"); 1133 goto error_4; 1134 } 1135 1136 dev->umrc.qp = qp; 1137 dev->umrc.cq = cq; 1138 dev->umrc.mr = mr; 1139 dev->umrc.pd = pd; 1140 1141 sema_init(&dev->umrc.sem, MAX_UMR_WR); 1142 ret = mlx5_mr_cache_init(dev); 1143 if (ret) { 1144 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 1145 goto error_4; 1146 } 1147 1148 kfree(attr); 1149 kfree(init_attr); 1150 1151 return 0; 1152 1153 error_4: 1154 mlx5_ib_destroy_qp(qp); 1155 1156 error_3: 1157 ib_destroy_cq(cq); 1158 1159 error_2: 1160 ib_dereg_mr(mr); 1161 1162 error_1: 1163 ib_dealloc_pd(pd); 1164 1165 error_0: 1166 kfree(attr); 1167 kfree(init_attr); 1168 return ret; 1169 } 1170 1171 static int create_dev_resources(struct mlx5_ib_resources *devr) 1172 { 1173 struct ib_srq_init_attr attr; 1174 struct mlx5_ib_dev *dev; 1175 int ret = 0; 1176 1177 dev = container_of(devr, struct mlx5_ib_dev, devr); 1178 1179 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL); 1180 if (IS_ERR(devr->p0)) { 1181 ret = PTR_ERR(devr->p0); 1182 goto error0; 1183 } 1184 devr->p0->device = &dev->ib_dev; 1185 devr->p0->uobject = NULL; 1186 atomic_set(&devr->p0->usecnt, 0); 1187 1188 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL); 1189 if (IS_ERR(devr->c0)) { 1190 ret = PTR_ERR(devr->c0); 1191 goto error1; 1192 } 1193 devr->c0->device = &dev->ib_dev; 1194 devr->c0->uobject = NULL; 1195 devr->c0->comp_handler = NULL; 1196 devr->c0->event_handler = NULL; 1197 devr->c0->cq_context = NULL; 1198 atomic_set(&devr->c0->usecnt, 0); 1199 1200 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 1201 if (IS_ERR(devr->x0)) { 1202 ret = PTR_ERR(devr->x0); 1203 goto error2; 1204 } 1205 devr->x0->device = &dev->ib_dev; 1206 devr->x0->inode = NULL; 1207 atomic_set(&devr->x0->usecnt, 0); 1208 mutex_init(&devr->x0->tgt_qp_mutex); 1209 INIT_LIST_HEAD(&devr->x0->tgt_qp_list); 1210 1211 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); 1212 if (IS_ERR(devr->x1)) { 1213 ret = PTR_ERR(devr->x1); 1214 goto error3; 1215 } 1216 devr->x1->device = &dev->ib_dev; 1217 devr->x1->inode = NULL; 1218 atomic_set(&devr->x1->usecnt, 0); 1219 mutex_init(&devr->x1->tgt_qp_mutex); 1220 INIT_LIST_HEAD(&devr->x1->tgt_qp_list); 1221 1222 memset(&attr, 0, sizeof(attr)); 1223 attr.attr.max_sge = 1; 1224 attr.attr.max_wr = 1; 1225 attr.srq_type = IB_SRQT_XRC; 1226 attr.ext.xrc.cq = devr->c0; 1227 attr.ext.xrc.xrcd = devr->x0; 1228 1229 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL); 1230 if (IS_ERR(devr->s0)) { 1231 ret = PTR_ERR(devr->s0); 1232 goto error4; 1233 } 1234 devr->s0->device = &dev->ib_dev; 1235 devr->s0->pd = devr->p0; 1236 devr->s0->uobject = NULL; 1237 devr->s0->event_handler = NULL; 1238 devr->s0->srq_context = NULL; 1239 devr->s0->srq_type = IB_SRQT_XRC; 1240 devr->s0->ext.xrc.xrcd = devr->x0; 1241 devr->s0->ext.xrc.cq = devr->c0; 1242 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt); 1243 atomic_inc(&devr->s0->ext.xrc.cq->usecnt); 1244 atomic_inc(&devr->p0->usecnt); 1245 atomic_set(&devr->s0->usecnt, 0); 1246 1247 return 0; 1248 1249 error4: 1250 mlx5_ib_dealloc_xrcd(devr->x1); 1251 error3: 1252 mlx5_ib_dealloc_xrcd(devr->x0); 1253 error2: 1254 mlx5_ib_destroy_cq(devr->c0); 1255 error1: 1256 mlx5_ib_dealloc_pd(devr->p0); 1257 error0: 1258 return ret; 1259 } 1260 1261 static void destroy_dev_resources(struct mlx5_ib_resources *devr) 1262 { 1263 mlx5_ib_destroy_srq(devr->s0); 1264 mlx5_ib_dealloc_xrcd(devr->x0); 1265 mlx5_ib_dealloc_xrcd(devr->x1); 1266 mlx5_ib_destroy_cq(devr->c0); 1267 mlx5_ib_dealloc_pd(devr->p0); 1268 } 1269 1270 static void *mlx5_ib_add(struct mlx5_core_dev *mdev) 1271 { 1272 struct mlx5_ib_dev *dev; 1273 int err; 1274 int i; 1275 1276 printk_once(KERN_INFO "%s", mlx5_version); 1277 1278 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev)); 1279 if (!dev) 1280 return NULL; 1281 1282 dev->mdev = mdev; 1283 1284 err = get_port_caps(dev); 1285 if (err) 1286 goto err_dealloc; 1287 1288 get_ext_port_caps(dev); 1289 1290 err = alloc_comp_eqs(dev); 1291 if (err) 1292 goto err_dealloc; 1293 1294 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock); 1295 1296 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX); 1297 dev->ib_dev.owner = THIS_MODULE; 1298 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 1299 dev->ib_dev.local_dma_lkey = mdev->caps.gen.reserved_lkey; 1300 dev->num_ports = mdev->caps.gen.num_ports; 1301 dev->ib_dev.phys_port_cnt = dev->num_ports; 1302 dev->ib_dev.num_comp_vectors = dev->num_comp_vectors; 1303 dev->ib_dev.dma_device = &mdev->pdev->dev; 1304 1305 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION; 1306 dev->ib_dev.uverbs_cmd_mask = 1307 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1308 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1309 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1310 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1311 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1312 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1313 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1314 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1315 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1316 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1317 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1318 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1319 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1320 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1321 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1322 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1323 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1324 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1325 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1326 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1327 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1328 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1329 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1330 dev->ib_dev.uverbs_ex_cmd_mask = 1331 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE); 1332 1333 dev->ib_dev.query_device = mlx5_ib_query_device; 1334 dev->ib_dev.query_port = mlx5_ib_query_port; 1335 dev->ib_dev.query_gid = mlx5_ib_query_gid; 1336 dev->ib_dev.query_pkey = mlx5_ib_query_pkey; 1337 dev->ib_dev.modify_device = mlx5_ib_modify_device; 1338 dev->ib_dev.modify_port = mlx5_ib_modify_port; 1339 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext; 1340 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext; 1341 dev->ib_dev.mmap = mlx5_ib_mmap; 1342 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd; 1343 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd; 1344 dev->ib_dev.create_ah = mlx5_ib_create_ah; 1345 dev->ib_dev.query_ah = mlx5_ib_query_ah; 1346 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah; 1347 dev->ib_dev.create_srq = mlx5_ib_create_srq; 1348 dev->ib_dev.modify_srq = mlx5_ib_modify_srq; 1349 dev->ib_dev.query_srq = mlx5_ib_query_srq; 1350 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq; 1351 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv; 1352 dev->ib_dev.create_qp = mlx5_ib_create_qp; 1353 dev->ib_dev.modify_qp = mlx5_ib_modify_qp; 1354 dev->ib_dev.query_qp = mlx5_ib_query_qp; 1355 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp; 1356 dev->ib_dev.post_send = mlx5_ib_post_send; 1357 dev->ib_dev.post_recv = mlx5_ib_post_recv; 1358 dev->ib_dev.create_cq = mlx5_ib_create_cq; 1359 dev->ib_dev.modify_cq = mlx5_ib_modify_cq; 1360 dev->ib_dev.resize_cq = mlx5_ib_resize_cq; 1361 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq; 1362 dev->ib_dev.poll_cq = mlx5_ib_poll_cq; 1363 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq; 1364 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr; 1365 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr; 1366 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr; 1367 dev->ib_dev.destroy_mr = mlx5_ib_destroy_mr; 1368 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach; 1369 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach; 1370 dev->ib_dev.process_mad = mlx5_ib_process_mad; 1371 dev->ib_dev.create_mr = mlx5_ib_create_mr; 1372 dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr; 1373 dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list; 1374 dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list; 1375 dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status; 1376 1377 mlx5_ib_internal_query_odp_caps(dev); 1378 1379 if (mdev->caps.gen.flags & MLX5_DEV_CAP_FLAG_XRC) { 1380 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd; 1381 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd; 1382 dev->ib_dev.uverbs_cmd_mask |= 1383 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1384 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1385 } 1386 1387 err = init_node_data(dev); 1388 if (err) 1389 goto err_eqs; 1390 1391 mutex_init(&dev->cap_mask_mutex); 1392 spin_lock_init(&dev->mr_lock); 1393 1394 err = create_dev_resources(&dev->devr); 1395 if (err) 1396 goto err_eqs; 1397 1398 err = ib_register_device(&dev->ib_dev, NULL); 1399 if (err) 1400 goto err_rsrc; 1401 1402 err = create_umr_res(dev); 1403 if (err) 1404 goto err_dev; 1405 1406 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) { 1407 err = device_create_file(&dev->ib_dev.dev, 1408 mlx5_class_attributes[i]); 1409 if (err) 1410 goto err_umrc; 1411 } 1412 1413 dev->ib_active = true; 1414 1415 return dev; 1416 1417 err_umrc: 1418 destroy_umrc_res(dev); 1419 1420 err_dev: 1421 ib_unregister_device(&dev->ib_dev); 1422 1423 err_rsrc: 1424 destroy_dev_resources(&dev->devr); 1425 1426 err_eqs: 1427 free_comp_eqs(dev); 1428 1429 err_dealloc: 1430 ib_dealloc_device((struct ib_device *)dev); 1431 1432 return NULL; 1433 } 1434 1435 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context) 1436 { 1437 struct mlx5_ib_dev *dev = context; 1438 ib_unregister_device(&dev->ib_dev); 1439 destroy_umrc_res(dev); 1440 destroy_dev_resources(&dev->devr); 1441 free_comp_eqs(dev); 1442 ib_dealloc_device(&dev->ib_dev); 1443 } 1444 1445 static struct mlx5_interface mlx5_ib_interface = { 1446 .add = mlx5_ib_add, 1447 .remove = mlx5_ib_remove, 1448 .event = mlx5_ib_event, 1449 }; 1450 1451 static int __init mlx5_ib_init(void) 1452 { 1453 if (deprecated_prof_sel != 2) 1454 pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n"); 1455 1456 return mlx5_register_interface(&mlx5_ib_interface); 1457 } 1458 1459 static void __exit mlx5_ib_cleanup(void) 1460 { 1461 mlx5_unregister_interface(&mlx5_ib_interface); 1462 } 1463 1464 module_init(mlx5_ib_init); 1465 module_exit(mlx5_ib_cleanup); 1466