1 /*- 2 * SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB 3 * 4 * Copyright (c) 2021 - 2022 Intel Corporation 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenFabrics.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/sysctl.h> 41 #include <machine/bus.h> 42 #include <linux/device.h> 43 #include <sys/rman.h> 44 45 #include "ice_rdma.h" 46 #include "irdma_main.h" 47 #include "icrdma_hw.h" 48 49 #include "irdma_if.h" 50 #include "irdma_di_if.h" 51 52 /** 53 * Driver version 54 */ 55 char irdma_driver_version[] = "1.1.11-k"; 56 57 /** 58 * irdma_init_tunable - prepare tunables 59 * @rf: RDMA PCI function 60 * @pf_id: id of the pf 61 */ 62 static void 63 irdma_init_tunable(struct irdma_pci_f *rf, uint8_t pf_id) 64 { 65 struct sysctl_oid_list *irdma_sysctl_oid_list; 66 char pf_name[16]; 67 68 snprintf(pf_name, 15, "irdma%d", pf_id); 69 sysctl_ctx_init(&rf->tun_info.irdma_sysctl_ctx); 70 71 rf->tun_info.irdma_sysctl_tree = SYSCTL_ADD_NODE(&rf->tun_info.irdma_sysctl_ctx, 72 SYSCTL_STATIC_CHILDREN(_dev), 73 OID_AUTO, pf_name, CTLFLAG_RD, 74 NULL, ""); 75 76 irdma_sysctl_oid_list = SYSCTL_CHILDREN(rf->tun_info.irdma_sysctl_tree); 77 78 /* 79 * debug mask setting 80 */ 81 SYSCTL_ADD_S32(&rf->tun_info.irdma_sysctl_ctx, irdma_sysctl_oid_list, 82 OID_AUTO, "debug", CTLFLAG_RWTUN, &rf->sc_dev.debug_mask, 83 0, "irdma debug"); 84 85 /* 86 * RoCEv2/iWARP setting RoCEv2 the default mode 87 */ 88 rf->tun_info.roce_ena = 1; 89 SYSCTL_ADD_U8(&rf->tun_info.irdma_sysctl_ctx, irdma_sysctl_oid_list, OID_AUTO, 90 "roce_enable", CTLFLAG_RDTUN, &rf->tun_info.roce_ena, 0, 91 "RoCEv2 mode enable"); 92 93 rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY; 94 if (rf->tun_info.roce_ena == 1) 95 rf->protocol_used = IRDMA_ROCE_PROTOCOL_ONLY; 96 else if (rf->tun_info.roce_ena != 0) 97 printf("%s:%d wrong roce_enable value (%d), using iWARP\n", 98 __func__, __LINE__, rf->tun_info.roce_ena); 99 printf("%s:%d protocol: %s, roce_enable value: %d\n", __func__, __LINE__, 100 (rf->protocol_used == IRDMA_IWARP_PROTOCOL_ONLY) ? "iWARP" : "RoCEv2", 101 rf->tun_info.roce_ena); 102 103 snprintf(rf->tun_info.drv_ver, IRDMA_VER_LEN, "%s", irdma_driver_version); 104 SYSCTL_ADD_STRING(&rf->tun_info.irdma_sysctl_ctx, irdma_sysctl_oid_list, 105 OID_AUTO, "drv_ver", CTLFLAG_RDTUN, rf->tun_info.drv_ver, 106 IRDMA_VER_LEN, "driver version"); 107 108 irdma_dcqcn_tunables_init(rf); 109 } 110 111 /** 112 * irdma_find_handler - obtain hdl object to identify pf 113 * @p_dev: the peer interface structure 114 */ 115 static struct irdma_handler * 116 irdma_find_handler(struct ice_rdma_peer *p_dev) 117 { 118 struct irdma_handler *hdl; 119 unsigned long flags; 120 121 spin_lock_irqsave(&irdma_handler_lock, flags); 122 list_for_each_entry(hdl, &irdma_handlers, list) { 123 if (!hdl) 124 continue; 125 if (!hdl->iwdev->rf->peer_info) 126 continue; 127 if (hdl->iwdev->rf->peer_info->dev == p_dev->dev) { 128 spin_unlock_irqrestore(&irdma_handler_lock, flags); 129 return hdl; 130 } 131 } 132 spin_unlock_irqrestore(&irdma_handler_lock, flags); 133 134 return NULL; 135 } 136 137 /** 138 * peer_to_iwdev - return iwdev based on peer 139 * @peer: the peer interface structure 140 */ 141 static struct irdma_device * 142 peer_to_iwdev(struct ice_rdma_peer *peer) 143 { 144 struct irdma_handler *hdl; 145 146 hdl = irdma_find_handler(peer); 147 if (!hdl) { 148 printf("%s:%d rdma handler not found\n", __func__, __LINE__); 149 return NULL; 150 } 151 152 return hdl->iwdev; 153 } 154 155 /** 156 * irdma_get_qos_info - save qos info from parameters to internal struct 157 * @l2params: destination, qos, tc, mtu info structure 158 * @qos_info: source, DCB settings structure 159 */ 160 static void 161 irdma_get_qos_info(struct irdma_l2params *l2params, struct ice_qos_params *qos_info) 162 { 163 int i; 164 165 l2params->num_tc = qos_info->num_tc; 166 l2params->num_apps = qos_info->num_apps; 167 l2params->vsi_prio_type = qos_info->vsi_priority_type; 168 l2params->vsi_rel_bw = qos_info->vsi_relative_bw; 169 for (i = 0; i < l2params->num_tc; i++) { 170 l2params->tc_info[i].egress_virt_up = 171 qos_info->tc_info[i].egress_virt_up; 172 l2params->tc_info[i].ingress_virt_up = 173 qos_info->tc_info[i].ingress_virt_up; 174 l2params->tc_info[i].prio_type = qos_info->tc_info[i].prio_type; 175 l2params->tc_info[i].rel_bw = qos_info->tc_info[i].rel_bw; 176 l2params->tc_info[i].tc_ctx = qos_info->tc_info[i].tc_ctx; 177 } 178 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) 179 l2params->up2tc[i] = qos_info->up2tc[i]; 180 181 if (qos_info->pfc_mode == IRDMA_QOS_MODE_DSCP) { 182 l2params->dscp_mode = true; 183 memcpy(l2params->dscp_map, qos_info->dscp_map, sizeof(l2params->dscp_map)); 184 } 185 printf("%s:%d: l2params settings:\n num_tc %d,\n num_apps %d,\n", 186 __func__, __LINE__, l2params->num_tc, l2params->num_apps); 187 printf(" vsi_prio_type %d,\n vsi_rel_bw %d,\n egress_virt_up:", 188 l2params->vsi_prio_type, l2params->vsi_rel_bw); 189 for (i = 0; i < l2params->num_tc; i++) 190 printf(" %d", l2params->tc_info[i].egress_virt_up); 191 printf("\n ingress_virt_up:"); 192 for (i = 0; i < l2params->num_tc; i++) 193 printf(" %d", l2params->tc_info[i].ingress_virt_up); 194 printf("\n prio_type:"); 195 for (i = 0; i < l2params->num_tc; i++) 196 printf(" %d", l2params->tc_info[i].prio_type); 197 printf("\n rel_bw:"); 198 for (i = 0; i < l2params->num_tc; i++) 199 printf(" %d", l2params->tc_info[i].rel_bw); 200 printf("\n tc_ctx:"); 201 for (i = 0; i < l2params->num_tc; i++) 202 printf(" %lu", l2params->tc_info[i].tc_ctx); 203 printf("\n up2tc:"); 204 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) 205 printf(" %d", l2params->up2tc[i]); 206 printf(" dscp_mode: %d,\n", l2params->dscp_mode); 207 for (i = 0; i < IRDMA_DSCP_NUM_VAL; i++) 208 printf(" %d", l2params->dscp_map[i]); 209 printf("\n"); 210 211 dump_struct(l2params, sizeof(*l2params), "l2params"); 212 } 213 214 /** 215 * irdma_log_invalid_mtu - check mtu setting validity 216 * @mtu: mtu value 217 * @dev: hardware control device structure 218 */ 219 static void 220 irdma_log_invalid_mtu(u16 mtu, struct irdma_sc_dev *dev) 221 { 222 if (mtu < IRDMA_MIN_MTU_IPV4) 223 irdma_dev_warn(to_ibdev(dev), 224 "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 576 for IPv4\n", 225 mtu); 226 else if (mtu < IRDMA_MIN_MTU_IPV6) 227 irdma_dev_warn(to_ibdev(dev), 228 "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 1280 for IPv6\\n", 229 mtu); 230 } 231 232 /** 233 * irdma_event_handler - handling events from lan driver 234 * @peer: the peer interface structure 235 * @event: event info structure 236 */ 237 static void 238 irdma_event_handler(struct ice_rdma_peer *peer, struct ice_rdma_event *event) 239 { 240 struct irdma_device *iwdev; 241 struct irdma_l2params l2params = {}; 242 243 printf("%s:%d event_handler %s (%x) on pf %d (%d)\n", __func__, __LINE__, 244 (event->type == 1) ? "LINK CHANGE" : 245 (event->type == 2) ? "MTU CHANGE" : 246 (event->type == 3) ? "TC CHANGE" : "UNKNOWN", 247 event->type, peer->pf_id, if_getdunit(peer->ifp)); 248 iwdev = peer_to_iwdev(peer); 249 if (!iwdev) { 250 printf("%s:%d rdma device not found\n", __func__, __LINE__); 251 return; 252 } 253 254 switch (event->type) { 255 case ICE_RDMA_EVENT_LINK_CHANGE: 256 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__, 257 peer->pf_id, if_getdunit(peer->ifp), event->linkstate, 258 event->baudrate); 259 break; 260 case ICE_RDMA_EVENT_MTU_CHANGE: 261 if (iwdev->vsi.mtu != event->mtu) { 262 l2params.mtu = event->mtu; 263 l2params.mtu_changed = true; 264 irdma_log_invalid_mtu(l2params.mtu, &iwdev->rf->sc_dev); 265 irdma_change_l2params(&iwdev->vsi, &l2params); 266 } 267 break; 268 case ICE_RDMA_EVENT_TC_CHANGE: 269 /* 270 * 1. check if it is pre or post 2. check if it is currently being done 271 */ 272 if (event->prep == iwdev->vsi.tc_change_pending) { 273 printf("%s:%d can't process %s TC change if TC change is %spending\n", 274 __func__, __LINE__, 275 event->prep ? "pre" : "post", 276 event->prep ? " " : "not "); 277 goto done; 278 } 279 if (event->prep) { 280 iwdev->vsi.tc_change_pending = true; 281 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_SUSPEND); 282 wait_event_timeout(iwdev->suspend_wq, 283 !atomic_read(&iwdev->vsi.qp_suspend_reqs), 284 IRDMA_EVENT_TIMEOUT_MS * 10); 285 irdma_ws_reset(&iwdev->vsi); 286 printf("%s:%d TC change preparation done\n", __func__, __LINE__); 287 } else { 288 l2params.tc_changed = true; 289 irdma_get_qos_info(&l2params, &event->port_qos); 290 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY) 291 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode; 292 293 irdma_check_fc_for_tc_update(&iwdev->vsi, &l2params); 294 irdma_change_l2params(&iwdev->vsi, &l2params); 295 printf("%s:%d TC change done\n", __func__, __LINE__); 296 } 297 break; 298 case ICE_RDMA_EVENT_CRIT_ERR: 299 printf("%s:%d event type received: %d\n", __func__, __LINE__, event->type); 300 break; 301 default: 302 printf("%s:%d event type unsupported: %d\n", __func__, __LINE__, event->type); 303 } 304 done: 305 return; 306 } 307 308 /** 309 * irdma_link_change - Callback for link state change 310 * @peer: the peer interface structure 311 * @linkstate: state of the link 312 * @baudrate: speed of the link 313 */ 314 static void 315 irdma_link_change(struct ice_rdma_peer *peer, int linkstate, uint64_t baudrate) 316 { 317 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__, 318 peer->pf_id, if_getdunit(peer->ifp), linkstate, baudrate); 319 } 320 321 /** 322 * irdma_finalize_task - Finish open or close phase in a separate thread 323 * @context: instance holding peer and iwdev information 324 * 325 * Triggered from irdma_open or irdma_close to perform rt_init_hw or 326 * rt_deinit_hw respectively. Does registration and unregistration of 327 * the device. 328 */ 329 static void 330 irdma_finalize_task(void *context, int pending) 331 { 332 struct irdma_task_arg *task_arg = (struct irdma_task_arg *)context; 333 struct irdma_device *iwdev = task_arg->iwdev; 334 struct irdma_pci_f *rf = iwdev->rf; 335 struct ice_rdma_peer *peer = task_arg->peer; 336 struct irdma_l2params l2params = {{{0}}}; 337 struct ice_rdma_request req = {0}; 338 int status = 0; 339 340 if (iwdev->iw_status) { 341 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, 342 "Starting deferred closing %d (%d)\n", 343 rf->peer_info->pf_id, if_getdunit(peer->ifp)); 344 irdma_dereg_ipaddr_event_cb(rf); 345 irdma_ib_unregister_device(iwdev); 346 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE; 347 req.enable_filter = false; 348 IRDMA_DI_REQ_HANDLER(peer, &req); 349 irdma_cleanup_dead_qps(&iwdev->vsi); 350 irdma_rt_deinit_hw(iwdev); 351 } else { 352 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, 353 "Starting deferred opening %d (%d)\n", 354 rf->peer_info->pf_id, if_getdunit(peer->ifp)); 355 irdma_get_qos_info(&l2params, &peer->initial_qos_info); 356 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY) 357 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode; 358 359 l2params.mtu = peer->mtu; 360 status = irdma_rt_init_hw(iwdev, &l2params); 361 if (status) { 362 irdma_pr_err("RT init failed %d\n", status); 363 ib_dealloc_device(&iwdev->ibdev); 364 return; 365 } 366 status = irdma_ib_register_device(iwdev); 367 if (status) { 368 irdma_pr_err("Registration failed %d\n", status); 369 irdma_rt_deinit_hw(iwdev); 370 ib_dealloc_device(&iwdev->ibdev); 371 } 372 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE; 373 req.enable_filter = true; 374 IRDMA_DI_REQ_HANDLER(peer, &req); 375 irdma_reg_ipaddr_event_cb(rf); 376 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, 377 "Deferred opening finished %d (%d)\n", 378 rf->peer_info->pf_id, if_getdunit(peer->ifp)); 379 } 380 } 381 382 /** 383 * irdma_open - Callback for operation open for RDMA device 384 * @peer: the new peer interface structure 385 * 386 * Callback implementing the RDMA_OPEN function. Called by the ice driver to 387 * notify the RDMA client driver that a new device has been initialized. 388 */ 389 static int 390 irdma_open(struct ice_rdma_peer *peer) 391 { 392 struct ice_rdma_event event = {0}; 393 394 event.type = ICE_RDMA_EVENT_MTU_CHANGE; 395 event.mtu = peer->mtu; 396 397 irdma_event_handler(peer, &event); 398 399 return 0; 400 } 401 402 /** 403 * irdma_close - Callback to notify that a peer device is down 404 * @peer: the RDMA peer device being stopped 405 * 406 * Callback implementing the RDMA_CLOSE function. Called by the ice driver to 407 * notify the RDMA client driver that a peer device is being stopped. 408 */ 409 static int 410 irdma_close(struct ice_rdma_peer *peer) 411 { 412 /* 413 * This is called when ifconfig down. Keeping it for compatibility with ice. This event might be usefull for 414 * future. 415 */ 416 return 0; 417 } 418 419 /** 420 * irdma_alloc_pcidev - allocate memory for pcidev and populate data 421 * @peer: the new peer interface structure 422 * @rf: RDMA PCI function 423 */ 424 static int 425 irdma_alloc_pcidev(struct ice_rdma_peer *peer, struct irdma_pci_f *rf) 426 { 427 rf->pcidev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL); 428 if (!rf->pcidev) { 429 return -ENOMEM; 430 } 431 if (linux_pci_attach_device(rf->dev_ctx.dev, NULL, NULL, rf->pcidev)) 432 return -ENOMEM; 433 434 return 0; 435 } 436 437 /** 438 * irdma_dealloc_pcidev - deallocate memory for pcidev 439 * @rf: RDMA PCI function 440 */ 441 static void 442 irdma_dealloc_pcidev(struct irdma_pci_f *rf) 443 { 444 linux_pci_detach_device(rf->pcidev); 445 kfree(rf->pcidev); 446 } 447 448 /** 449 * irdma_fill_device_info - assign initial values to rf variables 450 * @iwdev: irdma device 451 * @peer: the peer interface structure 452 */ 453 static void 454 irdma_fill_device_info(struct irdma_device *iwdev, 455 struct ice_rdma_peer *peer) 456 { 457 struct irdma_pci_f *rf = iwdev->rf; 458 459 rf->peer_info = peer; 460 rf->gen_ops.register_qset = irdma_register_qset; 461 rf->gen_ops.unregister_qset = irdma_unregister_qset; 462 463 rf->rdma_ver = IRDMA_GEN_2; 464 rf->sc_dev.hw_attrs.uk_attrs.hw_rev = IRDMA_GEN_2; 465 rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT; 466 rf->rst_to = IRDMA_RST_TIMEOUT_HZ; 467 rf->check_fc = irdma_check_fc_for_qp; 468 rf->gen_ops.request_reset = irdma_request_reset; 469 irdma_set_rf_user_cfg_params(rf); 470 471 rf->default_vsi.vsi_idx = peer->pf_vsi_num; 472 rf->dev_ctx.dev = peer->dev; 473 rf->dev_ctx.mem_bus_space_tag = rman_get_bustag(peer->pci_mem); 474 rf->dev_ctx.mem_bus_space_handle = rman_get_bushandle(peer->pci_mem); 475 rf->dev_ctx.mem_bus_space_size = rman_get_size(peer->pci_mem); 476 477 rf->hw.dev_context = &rf->dev_ctx; 478 rf->hw.hw_addr = (u8 *)rman_get_virtual(peer->pci_mem); 479 rf->msix_count = peer->msix.count; 480 rf->msix_info.entry = peer->msix.base; 481 rf->msix_info.vector = peer->msix.count; 482 printf("%s:%d msix_info: %d %d %d\n", __func__, __LINE__, 483 rf->msix_count, rf->msix_info.entry, rf->msix_info.vector); 484 485 rf->iwdev = iwdev; 486 iwdev->netdev = peer->ifp; 487 iwdev->init_state = INITIAL_STATE; 488 iwdev->vsi_num = peer->pf_vsi_num; 489 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED; 490 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; 491 iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT; 492 iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT; 493 iwdev->roce_rtomin = 5; 494 495 if (rf->protocol_used == IRDMA_ROCE_PROTOCOL_ONLY) { 496 iwdev->roce_mode = true; 497 } 498 } 499 500 /** 501 * irdma_probe - Callback to probe a new RDMA peer device 502 * @peer: the new peer interface structure 503 * 504 * Callback implementing the RDMA_PROBE function. Called by the ice driver to 505 * notify the RDMA client driver that a new device has been created 506 */ 507 static int 508 irdma_probe(struct ice_rdma_peer *peer) 509 { 510 struct irdma_device *iwdev; 511 struct irdma_pci_f *rf; 512 struct irdma_handler *hdl; 513 int err = 0; 514 515 irdma_pr_info("probe: irdma-%s peer=%p, peer->pf_id=%d, peer->ifp=%p, peer->ifp->if_dunit=%d, peer->pci_mem->r_bustag=%p\n", 516 irdma_driver_version, peer, peer->pf_id, peer->ifp, 517 if_getdunit(peer->ifp), (void *)(uintptr_t)peer->pci_mem->r_bustag); 518 519 hdl = irdma_find_handler(peer); 520 if (hdl) 521 return -EBUSY; 522 523 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); 524 if (!hdl) 525 return -ENOMEM; 526 527 iwdev = (struct irdma_device *)ib_alloc_device(sizeof(*iwdev)); 528 if (!iwdev) { 529 kfree(hdl); 530 return -ENOMEM; 531 } 532 533 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL); 534 if (!iwdev->rf) { 535 ib_dealloc_device(&iwdev->ibdev); 536 kfree(hdl); 537 return -ENOMEM; 538 } 539 hdl->iwdev = iwdev; 540 iwdev->hdl = hdl; 541 542 irdma_init_tunable(iwdev->rf, if_getdunit(peer->ifp)); 543 irdma_fill_device_info(iwdev, peer); 544 rf = iwdev->rf; 545 546 if (irdma_alloc_pcidev(peer, rf)) 547 goto err_pcidev; 548 549 irdma_add_handler(hdl); 550 551 if (irdma_ctrl_init_hw(rf)) { 552 err = -EIO; 553 goto err_ctrl_init; 554 } 555 556 rf->dev_ctx.task_arg.peer = peer; 557 rf->dev_ctx.task_arg.iwdev = iwdev; 558 rf->dev_ctx.task_arg.peer = peer; 559 560 TASK_INIT(&hdl->deferred_task, 0, irdma_finalize_task, &rf->dev_ctx.task_arg); 561 hdl->deferred_tq = taskqueue_create_fast("irdma_defer", 562 M_NOWAIT, taskqueue_thread_enqueue, 563 &hdl->deferred_tq); 564 taskqueue_start_threads(&hdl->deferred_tq, 1, PI_NET, "irdma_defer_t"); 565 566 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task); 567 568 return 0; 569 570 err_ctrl_init: 571 irdma_del_handler(hdl); 572 irdma_dealloc_pcidev(rf); 573 err_pcidev: 574 kfree(iwdev->rf); 575 ib_dealloc_device(&iwdev->ibdev); 576 kfree(hdl); 577 578 return err; 579 } 580 581 /** 582 * irdma_remove - Callback to remove an RDMA peer device 583 * @peer: the new peer interface structure 584 * 585 * Callback implementing the RDMA_REMOVE function. Called by the ice driver to 586 * notify the RDMA client driver that the device wille be delated 587 */ 588 static int 589 irdma_remove(struct ice_rdma_peer *peer) 590 { 591 struct irdma_handler *hdl; 592 struct irdma_device *iwdev; 593 594 irdma_debug((struct irdma_sc_dev *)NULL, IRDMA_DEBUG_INIT, 595 "removing %s irdma%d\n", __func__, if_getdunit(peer->ifp)); 596 597 hdl = irdma_find_handler(peer); 598 if (!hdl) 599 return 0; 600 601 iwdev = hdl->iwdev; 602 603 if (iwdev->vsi.tc_change_pending) { 604 iwdev->vsi.tc_change_pending = false; 605 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_RESUME); 606 } 607 608 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task); 609 610 taskqueue_drain(hdl->deferred_tq, &hdl->deferred_task); 611 taskqueue_free(hdl->deferred_tq); 612 hdl->iwdev->rf->dev_ctx.task_arg.iwdev = NULL; 613 hdl->iwdev->rf->dev_ctx.task_arg.peer = NULL; 614 615 sysctl_ctx_free(&iwdev->rf->tun_info.irdma_sysctl_ctx); 616 hdl->iwdev->rf->tun_info.irdma_sysctl_tree = NULL; 617 618 irdma_ctrl_deinit_hw(iwdev->rf); 619 620 irdma_dealloc_pcidev(iwdev->rf); 621 622 irdma_del_handler(iwdev->hdl); 623 kfree(iwdev->hdl); 624 kfree(iwdev->rf); 625 ib_dealloc_device(&iwdev->ibdev); 626 irdma_pr_info("IRDMA hardware deinitialization complete irdma%d\n", 627 if_getdunit(peer->ifp)); 628 629 return 0; 630 } 631 632 /** 633 * irdma_prep_for_unregister - ensure the driver is ready to unregister 634 */ 635 static void 636 irdma_prep_for_unregister(void) 637 { 638 struct irdma_handler *hdl; 639 unsigned long flags; 640 bool hdl_valid; 641 642 do { 643 hdl_valid = false; 644 spin_lock_irqsave(&irdma_handler_lock, flags); 645 list_for_each_entry(hdl, &irdma_handlers, list) { 646 if (!hdl) 647 continue; 648 if (!hdl->iwdev->rf->peer_info) 649 continue; 650 hdl_valid = true; 651 break; 652 } 653 spin_unlock_irqrestore(&irdma_handler_lock, flags); 654 if (!hdl || !hdl_valid) 655 break; 656 IRDMA_CLOSE(hdl->iwdev->rf->peer_info); 657 IRDMA_REMOVE(hdl->iwdev->rf->peer_info); 658 } while (1); 659 } 660 661 static kobj_method_t irdma_methods[] = { 662 KOBJMETHOD(irdma_probe, irdma_probe), 663 KOBJMETHOD(irdma_open, irdma_open), 664 KOBJMETHOD(irdma_close, irdma_close), 665 KOBJMETHOD(irdma_remove, irdma_remove), 666 KOBJMETHOD(irdma_link_change, irdma_link_change), 667 KOBJMETHOD(irdma_event_handler, irdma_event_handler), 668 KOBJMETHOD_END 669 }; 670 671 /* declare irdma_class which extends the ice_rdma_di class */ 672 DEFINE_CLASS_1(irdma, irdma_class, irdma_methods, sizeof(struct ice_rdma_peer), ice_rdma_di_class); 673 674 static struct ice_rdma_info irdma_info = { 675 .major_version = ICE_RDMA_MAJOR_VERSION, 676 .minor_version = ICE_RDMA_MINOR_VERSION, 677 .patch_version = ICE_RDMA_PATCH_VERSION, 678 .rdma_class = &irdma_class, 679 }; 680 681 /** 682 * irdma_module_event_handler - Module event handler callback 683 * @mod: unused mod argument 684 * @what: the module event to handle 685 * @arg: unused module event argument 686 * 687 * Callback used by the FreeBSD module stack to notify the driver of module 688 * events. Used to implement custom handling for certain module events such as 689 * load and unload. 690 */ 691 static int 692 irdma_module_event_handler(module_t __unused mod, int what, void __unused * arg) 693 { 694 switch (what) { 695 case MOD_LOAD: 696 printf("Loading irdma module\n"); 697 return ice_rdma_register(&irdma_info); 698 case MOD_UNLOAD: 699 printf("Unloading irdma module\n"); 700 irdma_prep_for_unregister(); 701 ice_rdma_unregister(); 702 return (0); 703 default: 704 return (EOPNOTSUPP); 705 } 706 707 return (0); 708 } 709 710 static moduledata_t irdma_moduledata = { 711 "irdma", 712 irdma_module_event_handler, 713 NULL 714 }; 715 716 DECLARE_MODULE(irdma, irdma_moduledata, SI_SUB_LAST, SI_ORDER_ANY); 717 MODULE_VERSION(irdma, 1); 718 MODULE_DEPEND(irdma, ice, 1, 1, 1); 719 MODULE_DEPEND(irdma, ibcore, 1, 1, 1); 720