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 /*$FreeBSD$*/ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/bus.h> 39 #include <sys/kernel.h> 40 #include <sys/module.h> 41 #include <sys/sysctl.h> 42 #include <machine/bus.h> 43 #include <linux/device.h> 44 #include <sys/rman.h> 45 46 #include "ice_rdma.h" 47 #include "irdma_main.h" 48 #include "icrdma_hw.h" 49 50 #include "irdma_if.h" 51 #include "irdma_di_if.h" 52 53 /** 54 * Driver version 55 */ 56 char irdma_driver_version[] = "1.1.11-k"; 57 58 #define pf_if_d(peer) peer->ifp->if_dunit 59 60 /** 61 * irdma_init_tunable - prepare tunables 62 * @rf: RDMA PCI function 63 * @pf_id: id of the pf 64 */ 65 static void 66 irdma_init_tunable(struct irdma_pci_f *rf, uint8_t pf_id) 67 { 68 struct sysctl_oid_list *irdma_sysctl_oid_list; 69 char pf_name[16]; 70 71 snprintf(pf_name, 15, "irdma%d", pf_id); 72 sysctl_ctx_init(&rf->tun_info.irdma_sysctl_ctx); 73 74 rf->tun_info.irdma_sysctl_tree = SYSCTL_ADD_NODE(&rf->tun_info.irdma_sysctl_ctx, 75 SYSCTL_STATIC_CHILDREN(_dev), 76 OID_AUTO, pf_name, CTLFLAG_RD, 77 NULL, ""); 78 79 irdma_sysctl_oid_list = SYSCTL_CHILDREN(rf->tun_info.irdma_sysctl_tree); 80 81 /* 82 * debug mask setting 83 */ 84 SYSCTL_ADD_S32(&rf->tun_info.irdma_sysctl_ctx, irdma_sysctl_oid_list, 85 OID_AUTO, "debug", CTLFLAG_RWTUN, &rf->sc_dev.debug_mask, 86 0, "irdma debug"); 87 88 /* 89 * RoCEv2/iWARP setting RoCEv2 the default mode 90 */ 91 rf->tun_info.roce_ena = 1; 92 SYSCTL_ADD_U8(&rf->tun_info.irdma_sysctl_ctx, irdma_sysctl_oid_list, OID_AUTO, 93 "roce_enable", CTLFLAG_RDTUN, &rf->tun_info.roce_ena, 0, 94 "RoCEv2 mode enable"); 95 96 rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY; 97 if (rf->tun_info.roce_ena == 1) 98 rf->protocol_used = IRDMA_ROCE_PROTOCOL_ONLY; 99 else if (rf->tun_info.roce_ena != 0) 100 printf("%s:%d wrong roce_enable value (%d), using iWARP\n", 101 __func__, __LINE__, rf->tun_info.roce_ena); 102 printf("%s:%d protocol: %s, roce_enable value: %d\n", __func__, __LINE__, 103 (rf->protocol_used == IRDMA_IWARP_PROTOCOL_ONLY) ? "iWARP" : "RoCEv2", 104 rf->tun_info.roce_ena); 105 106 snprintf(rf->tun_info.drv_ver, IRDMA_VER_LEN, "%s", irdma_driver_version); 107 SYSCTL_ADD_STRING(&rf->tun_info.irdma_sysctl_ctx, irdma_sysctl_oid_list, 108 OID_AUTO, "drv_ver", CTLFLAG_RDTUN, rf->tun_info.drv_ver, 109 IRDMA_VER_LEN, "driver version"); 110 111 irdma_dcqcn_tunables_init(rf); 112 } 113 114 /** 115 * irdma_find_handler - obtain hdl object to identify pf 116 * @p_dev: the peer interface structure 117 */ 118 static struct irdma_handler * 119 irdma_find_handler(struct ice_rdma_peer *p_dev) 120 { 121 struct irdma_handler *hdl; 122 unsigned long flags; 123 124 spin_lock_irqsave(&irdma_handler_lock, flags); 125 list_for_each_entry(hdl, &irdma_handlers, list) { 126 if (!hdl) 127 continue; 128 if (!hdl->iwdev->rf->peer_info) 129 continue; 130 if (hdl->iwdev->rf->peer_info->dev == p_dev->dev) { 131 spin_unlock_irqrestore(&irdma_handler_lock, flags); 132 return hdl; 133 } 134 } 135 spin_unlock_irqrestore(&irdma_handler_lock, flags); 136 137 return NULL; 138 } 139 140 /** 141 * peer_to_iwdev - return iwdev based on peer 142 * @peer: the peer interface structure 143 */ 144 static struct irdma_device * 145 peer_to_iwdev(struct ice_rdma_peer *peer) 146 { 147 struct irdma_handler *hdl; 148 149 hdl = irdma_find_handler(peer); 150 if (!hdl) { 151 printf("%s:%d rdma handler not found\n", __func__, __LINE__); 152 return NULL; 153 } 154 155 return hdl->iwdev; 156 } 157 158 /** 159 * irdma_get_qos_info - save qos info from parameters to internal struct 160 * @l2params: destination, qos, tc, mtu info structure 161 * @qos_info: source, DCB settings structure 162 */ 163 static void 164 irdma_get_qos_info(struct irdma_l2params *l2params, struct ice_qos_params *qos_info) 165 { 166 int i; 167 168 l2params->num_tc = qos_info->num_tc; 169 l2params->num_apps = qos_info->num_apps; 170 l2params->vsi_prio_type = qos_info->vsi_priority_type; 171 l2params->vsi_rel_bw = qos_info->vsi_relative_bw; 172 for (i = 0; i < l2params->num_tc; i++) { 173 l2params->tc_info[i].egress_virt_up = 174 qos_info->tc_info[i].egress_virt_up; 175 l2params->tc_info[i].ingress_virt_up = 176 qos_info->tc_info[i].ingress_virt_up; 177 l2params->tc_info[i].prio_type = qos_info->tc_info[i].prio_type; 178 l2params->tc_info[i].rel_bw = qos_info->tc_info[i].rel_bw; 179 l2params->tc_info[i].tc_ctx = qos_info->tc_info[i].tc_ctx; 180 } 181 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) 182 l2params->up2tc[i] = qos_info->up2tc[i]; 183 184 if (qos_info->pfc_mode == IRDMA_QOS_MODE_DSCP) { 185 l2params->dscp_mode = true; 186 memcpy(l2params->dscp_map, qos_info->dscp_map, sizeof(l2params->dscp_map)); 187 } 188 printf("%s:%d: l2params settings:\n num_tc %d,\n num_apps %d,\n", 189 __func__, __LINE__, l2params->num_tc, l2params->num_apps); 190 printf(" vsi_prio_type %d,\n vsi_rel_bw %d,\n egress_virt_up:", 191 l2params->vsi_prio_type, l2params->vsi_rel_bw); 192 for (i = 0; i < l2params->num_tc; i++) 193 printf(" %d", l2params->tc_info[i].egress_virt_up); 194 printf("\n ingress_virt_up:"); 195 for (i = 0; i < l2params->num_tc; i++) 196 printf(" %d", l2params->tc_info[i].ingress_virt_up); 197 printf("\n prio_type:"); 198 for (i = 0; i < l2params->num_tc; i++) 199 printf(" %d", l2params->tc_info[i].prio_type); 200 printf("\n rel_bw:"); 201 for (i = 0; i < l2params->num_tc; i++) 202 printf(" %d", l2params->tc_info[i].rel_bw); 203 printf("\n tc_ctx:"); 204 for (i = 0; i < l2params->num_tc; i++) 205 printf(" %lu", l2params->tc_info[i].tc_ctx); 206 printf("\n up2tc:"); 207 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) 208 printf(" %d", l2params->up2tc[i]); 209 printf(" dscp_mode: %d,\n", l2params->dscp_mode); 210 for (i = 0; i < IRDMA_DSCP_NUM_VAL; i++) 211 printf(" %d", l2params->dscp_map[i]); 212 printf("\n"); 213 214 dump_struct(l2params, sizeof(*l2params), "l2params"); 215 } 216 217 /** 218 * irdma_log_invalid_mtu - check mtu setting validity 219 * @mtu: mtu value 220 * @dev: hardware control device structure 221 */ 222 static void 223 irdma_log_invalid_mtu(u16 mtu, struct irdma_sc_dev *dev) 224 { 225 if (mtu < IRDMA_MIN_MTU_IPV4) 226 irdma_dev_warn(to_ibdev(dev), 227 "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 576 for IPv4\n", 228 mtu); 229 else if (mtu < IRDMA_MIN_MTU_IPV6) 230 irdma_dev_warn(to_ibdev(dev), 231 "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 1280 for IPv6\\n", 232 mtu); 233 } 234 235 /** 236 * irdma_event_handler - handling events from lan driver 237 * @peer: the peer interface structure 238 * @event: event info structure 239 */ 240 static void 241 irdma_event_handler(struct ice_rdma_peer *peer, struct ice_rdma_event *event) 242 { 243 struct irdma_device *iwdev; 244 struct irdma_l2params l2params = {}; 245 246 printf("%s:%d event_handler %s (%x) on pf %d (%d)\n", __func__, __LINE__, 247 (event->type == 1) ? "LINK CHANGE" : 248 (event->type == 2) ? "MTU CHANGE" : 249 (event->type == 3) ? "TC CHANGE" : "UNKNOWN", 250 event->type, peer->pf_id, pf_if_d(peer)); 251 iwdev = peer_to_iwdev(peer); 252 if (!iwdev) { 253 printf("%s:%d rdma device not found\n", __func__, __LINE__); 254 return; 255 } 256 257 switch (event->type) { 258 case ICE_RDMA_EVENT_LINK_CHANGE: 259 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__, 260 peer->pf_id, pf_if_d(peer), event->linkstate, event->baudrate); 261 break; 262 case ICE_RDMA_EVENT_MTU_CHANGE: 263 if (iwdev->vsi.mtu != event->mtu) { 264 l2params.mtu = event->mtu; 265 l2params.mtu_changed = true; 266 irdma_log_invalid_mtu(l2params.mtu, &iwdev->rf->sc_dev); 267 irdma_change_l2params(&iwdev->vsi, &l2params); 268 } 269 break; 270 case ICE_RDMA_EVENT_TC_CHANGE: 271 /* 272 * 1. check if it is pre or post 2. check if it is currently being done 273 */ 274 if (event->prep == iwdev->vsi.tc_change_pending) { 275 printf("%s:%d can't process %s TC change if TC change is %spending\n", 276 __func__, __LINE__, 277 event->prep ? "pre" : "post", 278 event->prep ? " " : "not "); 279 goto done; 280 } 281 if (event->prep) { 282 iwdev->vsi.tc_change_pending = true; 283 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_SUSPEND); 284 wait_event_timeout(iwdev->suspend_wq, 285 !atomic_read(&iwdev->vsi.qp_suspend_reqs), 286 IRDMA_EVENT_TIMEOUT_MS * 10); 287 irdma_ws_reset(&iwdev->vsi); 288 printf("%s:%d TC change preparation done\n", __func__, __LINE__); 289 } else { 290 l2params.tc_changed = true; 291 irdma_get_qos_info(&l2params, &event->port_qos); 292 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY) 293 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode; 294 295 irdma_check_fc_for_tc_update(&iwdev->vsi, &l2params); 296 irdma_change_l2params(&iwdev->vsi, &l2params); 297 printf("%s:%d TC change done\n", __func__, __LINE__); 298 } 299 break; 300 case ICE_RDMA_EVENT_CRIT_ERR: 301 printf("%s:%d event type received: %d\n", __func__, __LINE__, event->type); 302 break; 303 default: 304 printf("%s:%d event type unsupported: %d\n", __func__, __LINE__, event->type); 305 } 306 done: 307 return; 308 } 309 310 /** 311 * irdma_link_change - Callback for link state change 312 * @peer: the peer interface structure 313 * @linkstate: state of the link 314 * @baudrate: speed of the link 315 */ 316 static void 317 irdma_link_change(struct ice_rdma_peer *peer, int linkstate, uint64_t baudrate) 318 { 319 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__, 320 peer->pf_id, pf_if_d(peer), linkstate, baudrate); 321 } 322 323 /** 324 * irdma_finalize_task - Finish open or close phase in a separate thread 325 * @context: instance holding peer and iwdev information 326 * 327 * Triggered from irdma_open or irdma_close to perform rt_init_hw or 328 * rt_deinit_hw respectively. Does registration and unregistration of 329 * the device. 330 */ 331 static void 332 irdma_finalize_task(void *context, int pending) 333 { 334 struct irdma_task_arg *task_arg = (struct irdma_task_arg *)context; 335 struct irdma_device *iwdev = task_arg->iwdev; 336 struct irdma_pci_f *rf = iwdev->rf; 337 struct ice_rdma_peer *peer = task_arg->peer; 338 struct irdma_l2params l2params = {{{0}}}; 339 struct ice_rdma_request req = {0}; 340 int status = 0; 341 342 if (iwdev->iw_status) { 343 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, 344 "Starting deferred closing %d (%d)\n", 345 rf->peer_info->pf_id, pf_if_d(peer)); 346 irdma_dereg_ipaddr_event_cb(rf); 347 irdma_ib_unregister_device(iwdev); 348 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE; 349 req.enable_filter = false; 350 IRDMA_DI_REQ_HANDLER(peer, &req); 351 irdma_cleanup_dead_qps(&iwdev->vsi); 352 irdma_rt_deinit_hw(iwdev); 353 } else { 354 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, 355 "Starting deferred opening %d (%d)\n", 356 rf->peer_info->pf_id, pf_if_d(peer)); 357 irdma_get_qos_info(&l2params, &peer->initial_qos_info); 358 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY) 359 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode; 360 361 l2params.mtu = peer->mtu; 362 status = irdma_rt_init_hw(iwdev, &l2params); 363 if (status) { 364 irdma_pr_err("RT init failed %d\n", status); 365 ib_dealloc_device(&iwdev->ibdev); 366 return; 367 } 368 status = irdma_ib_register_device(iwdev); 369 if (status) { 370 irdma_pr_err("Registration failed %d\n", status); 371 irdma_rt_deinit_hw(iwdev); 372 ib_dealloc_device(&iwdev->ibdev); 373 } 374 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE; 375 req.enable_filter = true; 376 IRDMA_DI_REQ_HANDLER(peer, &req); 377 irdma_reg_ipaddr_event_cb(rf); 378 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, 379 "Deferred opening finished %d (%d)\n", 380 rf->peer_info->pf_id, pf_if_d(peer)); 381 } 382 } 383 384 /** 385 * irdma_open - Callback for operation open for RDMA device 386 * @peer: the new peer interface structure 387 * 388 * Callback implementing the RDMA_OPEN function. Called by the ice driver to 389 * notify the RDMA client driver that a new device has been initialized. 390 */ 391 static int 392 irdma_open(struct ice_rdma_peer *peer) 393 { 394 struct ice_rdma_event event = {0}; 395 396 event.type = ICE_RDMA_EVENT_MTU_CHANGE; 397 event.mtu = peer->mtu; 398 399 irdma_event_handler(peer, &event); 400 401 return 0; 402 } 403 404 /** 405 * irdma_close - Callback to notify that a peer device is down 406 * @peer: the RDMA peer device being stopped 407 * 408 * Callback implementing the RDMA_CLOSE function. Called by the ice driver to 409 * notify the RDMA client driver that a peer device is being stopped. 410 */ 411 static int 412 irdma_close(struct ice_rdma_peer *peer) 413 { 414 /* 415 * This is called when ifconfig down. Keeping it for compatibility with ice. This event might be usefull for 416 * future. 417 */ 418 return 0; 419 } 420 421 /** 422 * irdma_alloc_pcidev - allocate memory for pcidev and populate data 423 * @peer: the new peer interface structure 424 * @rf: RDMA PCI function 425 */ 426 static int 427 irdma_alloc_pcidev(struct ice_rdma_peer *peer, struct irdma_pci_f *rf) 428 { 429 rf->pcidev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL); 430 if (!rf->pcidev) { 431 return -ENOMEM; 432 } 433 if (linux_pci_attach_device(rf->dev_ctx.dev, NULL, NULL, rf->pcidev)) 434 return -ENOMEM; 435 436 return 0; 437 } 438 439 /** 440 * irdma_dealloc_pcidev - deallocate memory for pcidev 441 * @rf: RDMA PCI function 442 */ 443 static void 444 irdma_dealloc_pcidev(struct irdma_pci_f *rf) 445 { 446 linux_pci_detach_device(rf->pcidev); 447 kfree(rf->pcidev); 448 } 449 450 /** 451 * irdma_fill_device_info - assign initial values to rf variables 452 * @iwdev: irdma device 453 * @peer: the peer interface structure 454 */ 455 static void 456 irdma_fill_device_info(struct irdma_device *iwdev, 457 struct ice_rdma_peer *peer) 458 { 459 struct irdma_pci_f *rf = iwdev->rf; 460 461 rf->peer_info = peer; 462 rf->gen_ops.register_qset = irdma_register_qset; 463 rf->gen_ops.unregister_qset = irdma_unregister_qset; 464 465 rf->rdma_ver = IRDMA_GEN_2; 466 rf->sc_dev.hw_attrs.uk_attrs.hw_rev = IRDMA_GEN_2; 467 rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT; 468 rf->rst_to = IRDMA_RST_TIMEOUT_HZ; 469 rf->check_fc = irdma_check_fc_for_qp; 470 rf->gen_ops.request_reset = irdma_request_reset; 471 irdma_set_rf_user_cfg_params(rf); 472 473 rf->default_vsi.vsi_idx = peer->pf_vsi_num; 474 rf->dev_ctx.dev = peer->dev; 475 rf->dev_ctx.mem_bus_space_tag = rman_get_bustag(peer->pci_mem); 476 rf->dev_ctx.mem_bus_space_handle = rman_get_bushandle(peer->pci_mem); 477 rf->dev_ctx.mem_bus_space_size = rman_get_size(peer->pci_mem); 478 479 rf->hw.dev_context = &rf->dev_ctx; 480 rf->hw.hw_addr = (u8 *)rman_get_virtual(peer->pci_mem); 481 rf->msix_count = peer->msix.count; 482 rf->msix_info.entry = peer->msix.base; 483 rf->msix_info.vector = peer->msix.count; 484 printf("%s:%d msix_info: %d %d %d\n", __func__, __LINE__, 485 rf->msix_count, rf->msix_info.entry, rf->msix_info.vector); 486 487 rf->iwdev = iwdev; 488 iwdev->netdev = peer->ifp; 489 iwdev->init_state = INITIAL_STATE; 490 iwdev->vsi_num = peer->pf_vsi_num; 491 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED; 492 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; 493 iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT; 494 iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT; 495 iwdev->roce_rtomin = 5; 496 497 if (rf->protocol_used == IRDMA_ROCE_PROTOCOL_ONLY) { 498 iwdev->roce_mode = true; 499 } 500 } 501 502 /** 503 * irdma_probe - Callback to probe a new RDMA peer device 504 * @peer: the new peer interface structure 505 * 506 * Callback implementing the RDMA_PROBE function. Called by the ice driver to 507 * notify the RDMA client driver that a new device has been created 508 */ 509 static int 510 irdma_probe(struct ice_rdma_peer *peer) 511 { 512 struct irdma_device *iwdev; 513 struct irdma_pci_f *rf; 514 struct irdma_handler *hdl; 515 int err = 0; 516 517 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", 518 irdma_driver_version, peer, peer->pf_id, peer->ifp, 519 pf_if_d(peer), (void *)(uintptr_t)peer->pci_mem->r_bustag); 520 521 hdl = irdma_find_handler(peer); 522 if (hdl) 523 return -EBUSY; 524 525 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); 526 if (!hdl) 527 return -ENOMEM; 528 529 iwdev = (struct irdma_device *)ib_alloc_device(sizeof(*iwdev)); 530 if (!iwdev) { 531 kfree(hdl); 532 return -ENOMEM; 533 } 534 535 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL); 536 if (!iwdev->rf) { 537 ib_dealloc_device(&iwdev->ibdev); 538 kfree(hdl); 539 return -ENOMEM; 540 } 541 hdl->iwdev = iwdev; 542 iwdev->hdl = hdl; 543 544 irdma_init_tunable(iwdev->rf, pf_if_d(peer)); 545 irdma_fill_device_info(iwdev, peer); 546 rf = iwdev->rf; 547 548 if (irdma_alloc_pcidev(peer, rf)) 549 goto err_pcidev; 550 551 irdma_add_handler(hdl); 552 553 if (irdma_ctrl_init_hw(rf)) { 554 err = -EIO; 555 goto err_ctrl_init; 556 } 557 558 rf->dev_ctx.task_arg.peer = peer; 559 rf->dev_ctx.task_arg.iwdev = iwdev; 560 rf->dev_ctx.task_arg.peer = peer; 561 562 TASK_INIT(&hdl->deferred_task, 0, irdma_finalize_task, &rf->dev_ctx.task_arg); 563 hdl->deferred_tq = taskqueue_create_fast("irdma_defer", 564 M_NOWAIT, taskqueue_thread_enqueue, 565 &hdl->deferred_tq); 566 taskqueue_start_threads(&hdl->deferred_tq, 1, PI_NET, "irdma_defer_t"); 567 568 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task); 569 570 return 0; 571 572 err_ctrl_init: 573 irdma_del_handler(hdl); 574 irdma_dealloc_pcidev(rf); 575 err_pcidev: 576 kfree(iwdev->rf); 577 ib_dealloc_device(&iwdev->ibdev); 578 kfree(hdl); 579 580 return err; 581 } 582 583 /** 584 * irdma_remove - Callback to remove an RDMA peer device 585 * @peer: the new peer interface structure 586 * 587 * Callback implementing the RDMA_REMOVE function. Called by the ice driver to 588 * notify the RDMA client driver that the device wille be delated 589 */ 590 static int 591 irdma_remove(struct ice_rdma_peer *peer) 592 { 593 struct irdma_handler *hdl; 594 struct irdma_device *iwdev; 595 596 irdma_debug((struct irdma_sc_dev *)NULL, IRDMA_DEBUG_INIT, 597 "removing %s irdma%d\n", __func__, pf_if_d(peer)); 598 599 hdl = irdma_find_handler(peer); 600 if (!hdl) 601 return 0; 602 603 iwdev = hdl->iwdev; 604 605 if (iwdev->vsi.tc_change_pending) { 606 iwdev->vsi.tc_change_pending = false; 607 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_RESUME); 608 } 609 610 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task); 611 612 taskqueue_drain(hdl->deferred_tq, &hdl->deferred_task); 613 taskqueue_free(hdl->deferred_tq); 614 hdl->iwdev->rf->dev_ctx.task_arg.iwdev = NULL; 615 hdl->iwdev->rf->dev_ctx.task_arg.peer = NULL; 616 617 sysctl_ctx_free(&iwdev->rf->tun_info.irdma_sysctl_ctx); 618 hdl->iwdev->rf->tun_info.irdma_sysctl_tree = NULL; 619 620 irdma_ctrl_deinit_hw(iwdev->rf); 621 622 irdma_dealloc_pcidev(iwdev->rf); 623 624 irdma_del_handler(iwdev->hdl); 625 kfree(iwdev->hdl); 626 kfree(iwdev->rf); 627 ib_dealloc_device(&iwdev->ibdev); 628 irdma_pr_info("IRDMA hardware deinitialization complete irdma%d\n", 629 pf_if_d(peer)); 630 631 return 0; 632 } 633 634 /** 635 * irdma_prep_for_unregister - ensure the driver is ready to unregister 636 */ 637 static void 638 irdma_prep_for_unregister(void) 639 { 640 struct irdma_handler *hdl; 641 unsigned long flags; 642 bool hdl_valid; 643 644 do { 645 hdl_valid = false; 646 spin_lock_irqsave(&irdma_handler_lock, flags); 647 list_for_each_entry(hdl, &irdma_handlers, list) { 648 if (!hdl) 649 continue; 650 if (!hdl->iwdev->rf->peer_info) 651 continue; 652 hdl_valid = true; 653 break; 654 } 655 spin_unlock_irqrestore(&irdma_handler_lock, flags); 656 if (!hdl || !hdl_valid) 657 break; 658 IRDMA_CLOSE(hdl->iwdev->rf->peer_info); 659 IRDMA_REMOVE(hdl->iwdev->rf->peer_info); 660 } while (1); 661 } 662 663 static kobj_method_t irdma_methods[] = { 664 KOBJMETHOD(irdma_probe, irdma_probe), 665 KOBJMETHOD(irdma_open, irdma_open), 666 KOBJMETHOD(irdma_close, irdma_close), 667 KOBJMETHOD(irdma_remove, irdma_remove), 668 KOBJMETHOD(irdma_link_change, irdma_link_change), 669 KOBJMETHOD(irdma_event_handler, irdma_event_handler), 670 KOBJMETHOD_END 671 }; 672 673 /* declare irdma_class which extends the ice_rdma_di class */ 674 DEFINE_CLASS_1(irdma, irdma_class, irdma_methods, sizeof(struct ice_rdma_peer), ice_rdma_di_class); 675 676 static struct ice_rdma_info irdma_info = { 677 .major_version = ICE_RDMA_MAJOR_VERSION, 678 .minor_version = ICE_RDMA_MINOR_VERSION, 679 .patch_version = ICE_RDMA_PATCH_VERSION, 680 .rdma_class = &irdma_class, 681 }; 682 683 /** 684 * irdma_module_event_handler - Module event handler callback 685 * @mod: unused mod argument 686 * @what: the module event to handle 687 * @arg: unused module event argument 688 * 689 * Callback used by the FreeBSD module stack to notify the driver of module 690 * events. Used to implement custom handling for certain module events such as 691 * load and unload. 692 */ 693 static int 694 irdma_module_event_handler(module_t __unused mod, int what, void __unused * arg) 695 { 696 switch (what) { 697 case MOD_LOAD: 698 printf("Loading irdma module\n"); 699 return ice_rdma_register(&irdma_info); 700 case MOD_UNLOAD: 701 printf("Unloading irdma module\n"); 702 irdma_prep_for_unregister(); 703 ice_rdma_unregister(); 704 return (0); 705 default: 706 return (EOPNOTSUPP); 707 } 708 709 return (0); 710 } 711 712 static moduledata_t irdma_moduledata = { 713 "irdma", 714 irdma_module_event_handler, 715 NULL 716 }; 717 718 DECLARE_MODULE(irdma, irdma_moduledata, SI_SUB_LAST, SI_ORDER_ANY); 719 MODULE_VERSION(irdma, 1); 720 MODULE_DEPEND(irdma, ice, 1, 1, 1); 721 MODULE_DEPEND(irdma, ibcore, 1, 1, 1); 722