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[] = "0.0.51-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 irdma_dcqcn_tunables_init(rf); 107 } 108 109 /** 110 * irdma_find_handler - obtain hdl object to identify pf 111 * @p_dev: the peer interface structure 112 */ 113 static struct irdma_handler * 114 irdma_find_handler(struct ice_rdma_peer *p_dev) 115 { 116 struct irdma_handler *hdl; 117 unsigned long flags; 118 119 spin_lock_irqsave(&irdma_handler_lock, flags); 120 list_for_each_entry(hdl, &irdma_handlers, list) { 121 if (!hdl) 122 continue; 123 if (!hdl->iwdev->rf->peer_info) 124 continue; 125 if (hdl->iwdev->rf->peer_info->dev == p_dev->dev) { 126 spin_unlock_irqrestore(&irdma_handler_lock, flags); 127 return hdl; 128 } 129 } 130 spin_unlock_irqrestore(&irdma_handler_lock, flags); 131 132 return NULL; 133 } 134 135 /** 136 * peer_to_iwdev - return iwdev based on peer 137 * @peer: the peer interface structure 138 */ 139 static struct irdma_device * 140 peer_to_iwdev(struct ice_rdma_peer *peer) 141 { 142 struct irdma_handler *hdl; 143 144 hdl = irdma_find_handler(peer); 145 if (!hdl) { 146 printf("%s:%d rdma handler not found\n", __func__, __LINE__); 147 return NULL; 148 } 149 150 return hdl->iwdev; 151 } 152 153 /** 154 * irdma_get_qos_info - save qos info from parameters to internal struct 155 * @l2params: destination, qos, tc, mtu info structure 156 * @qos_info: source, DCB settings structure 157 */ 158 static void 159 irdma_get_qos_info(struct irdma_l2params *l2params, struct ice_qos_params *qos_info) 160 { 161 int i; 162 163 l2params->num_tc = qos_info->num_tc; 164 l2params->num_apps = qos_info->num_apps; 165 l2params->vsi_prio_type = qos_info->vsi_priority_type; 166 l2params->vsi_rel_bw = qos_info->vsi_relative_bw; 167 for (i = 0; i < l2params->num_tc; i++) { 168 l2params->tc_info[i].egress_virt_up = 169 qos_info->tc_info[i].egress_virt_up; 170 l2params->tc_info[i].ingress_virt_up = 171 qos_info->tc_info[i].ingress_virt_up; 172 l2params->tc_info[i].prio_type = qos_info->tc_info[i].prio_type; 173 l2params->tc_info[i].rel_bw = qos_info->tc_info[i].rel_bw; 174 l2params->tc_info[i].tc_ctx = qos_info->tc_info[i].tc_ctx; 175 } 176 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) 177 l2params->up2tc[i] = qos_info->up2tc[i]; 178 179 if (qos_info->pfc_mode == IRDMA_QOS_MODE_DSCP) { 180 l2params->dscp_mode = true; 181 memcpy(l2params->dscp_map, qos_info->dscp_map, sizeof(l2params->dscp_map)); 182 } 183 printf("%s:%d: l2params settings:\n num_tc %d,\n num_apps %d,\n", 184 __func__, __LINE__, l2params->num_tc, l2params->num_apps); 185 printf(" vsi_prio_type %d,\n vsi_rel_bw %d,\n egress_virt_up:", 186 l2params->vsi_prio_type, l2params->vsi_rel_bw); 187 for (i = 0; i < l2params->num_tc; i++) 188 printf(" %d", l2params->tc_info[i].egress_virt_up); 189 printf("\n ingress_virt_up:"); 190 for (i = 0; i < l2params->num_tc; i++) 191 printf(" %d", l2params->tc_info[i].ingress_virt_up); 192 printf("\n prio_type:"); 193 for (i = 0; i < l2params->num_tc; i++) 194 printf(" %d", l2params->tc_info[i].prio_type); 195 printf("\n rel_bw:"); 196 for (i = 0; i < l2params->num_tc; i++) 197 printf(" %d", l2params->tc_info[i].rel_bw); 198 printf("\n tc_ctx:"); 199 for (i = 0; i < l2params->num_tc; i++) 200 printf(" %lu", l2params->tc_info[i].tc_ctx); 201 printf("\n up2tc:"); 202 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) 203 printf(" %d", l2params->up2tc[i]); 204 printf(" dscp_mode: %d,\n", l2params->dscp_mode); 205 for (i = 0; i < IRDMA_DSCP_NUM_VAL; i++) 206 printf(" %d", l2params->dscp_map[i]); 207 printf("\n"); 208 209 dump_struct(l2params, sizeof(*l2params), "l2params"); 210 } 211 212 /** 213 * irdma_log_invalid_mtu - check mtu setting validity 214 * @mtu: mtu value 215 * @dev: hardware control device structure 216 */ 217 static void 218 irdma_log_invalid_mtu(u16 mtu, struct irdma_sc_dev *dev) 219 { 220 if (mtu < IRDMA_MIN_MTU_IPV4) 221 irdma_dev_warn(dev, "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 576 for IPv4\n", mtu); 222 else if (mtu < IRDMA_MIN_MTU_IPV6) 223 irdma_dev_warn(dev, "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 1280 for IPv6\\n", mtu); 224 } 225 226 /** 227 * irdma_event_handler - handling events from lan driver 228 * @peer: the peer interface structure 229 * @event: event info structure 230 */ 231 static void 232 irdma_event_handler(struct ice_rdma_peer *peer, struct ice_rdma_event *event) 233 { 234 struct irdma_device *iwdev; 235 struct irdma_l2params l2params = {}; 236 237 printf("%s:%d event_handler %s (%x) on pf %d (%d)\n", __func__, __LINE__, 238 (event->type == 1) ? "LINK CHANGE" : 239 (event->type == 2) ? "MTU CHANGE" : 240 (event->type == 3) ? "TC CHANGE" : "UNKNOWN", 241 event->type, peer->pf_id, pf_if_d(peer)); 242 iwdev = peer_to_iwdev(peer); 243 if (!iwdev) { 244 printf("%s:%d rdma device not found\n", __func__, __LINE__); 245 return; 246 } 247 248 switch (event->type) { 249 case ICE_RDMA_EVENT_LINK_CHANGE: 250 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__, 251 peer->pf_id, pf_if_d(peer), event->linkstate, event->baudrate); 252 break; 253 case ICE_RDMA_EVENT_MTU_CHANGE: 254 if (iwdev->vsi.mtu != event->mtu) { 255 l2params.mtu = event->mtu; 256 l2params.mtu_changed = true; 257 irdma_log_invalid_mtu(l2params.mtu, &iwdev->rf->sc_dev); 258 irdma_change_l2params(&iwdev->vsi, &l2params); 259 } 260 break; 261 case ICE_RDMA_EVENT_TC_CHANGE: 262 /* 263 * 1. check if it is pre or post 2. check if it is currently being done 264 */ 265 if (event->prep == iwdev->vsi.tc_change_pending) { 266 printf("%s:%d can't process %s TC change if TC change is %spending\n", 267 __func__, __LINE__, 268 event->prep ? "pre" : "post", 269 event->prep ? " " : "not "); 270 goto done; 271 } 272 if (event->prep) { 273 iwdev->vsi.tc_change_pending = true; 274 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_SUSPEND); 275 wait_event_timeout(iwdev->suspend_wq, 276 !atomic_read(&iwdev->vsi.qp_suspend_reqs), 277 IRDMA_EVENT_TIMEOUT_MS * 10); 278 irdma_ws_reset(&iwdev->vsi); 279 printf("%s:%d TC change preparation done\n", __func__, __LINE__); 280 } else { 281 l2params.tc_changed = true; 282 irdma_get_qos_info(&l2params, &event->port_qos); 283 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY) 284 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode; 285 286 irdma_check_fc_for_tc_update(&iwdev->vsi, &l2params); 287 irdma_change_l2params(&iwdev->vsi, &l2params); 288 printf("%s:%d TC change done\n", __func__, __LINE__); 289 } 290 break; 291 case ICE_RDMA_EVENT_CRIT_ERR: 292 printf("%s:%d event type received: %d\n", __func__, __LINE__, event->type); 293 break; 294 default: 295 printf("%s:%d event type unsupported: %d\n", __func__, __LINE__, event->type); 296 } 297 done: 298 return; 299 } 300 301 /** 302 * irdma_link_change - Callback for link state change 303 * @peer: the peer interface structure 304 * @linkstate: state of the link 305 * @baudrate: speed of the link 306 */ 307 static void 308 irdma_link_change(struct ice_rdma_peer *peer, int linkstate, uint64_t baudrate) 309 { 310 printf("%s:%d PF: %x (%x), state: %d, speed: %lu\n", __func__, __LINE__, 311 peer->pf_id, pf_if_d(peer), linkstate, baudrate); 312 } 313 314 /** 315 * irdma_finalize_task - Finish open or close phase in a separate thread 316 * @context: instance holding peer and iwdev information 317 * 318 * Triggered from irdma_open or irdma_close to perform rt_init_hw or 319 * rt_deinit_hw respectively. Does registration and unregistration of 320 * the device. 321 */ 322 static void 323 irdma_finalize_task(void *context, int pending) 324 { 325 struct irdma_task_arg *task_arg = (struct irdma_task_arg *)context; 326 struct irdma_device *iwdev = task_arg->iwdev; 327 struct irdma_pci_f *rf = iwdev->rf; 328 struct ice_rdma_peer *peer = task_arg->peer; 329 struct irdma_l2params l2params = {{{0}}}; 330 struct ice_rdma_request req = {0}; 331 int status = 0; 332 333 if (iwdev->iw_status) { 334 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, "Starting deferred closing %d (%d)\n", 335 rf->peer_info->pf_id, pf_if_d(peer)); 336 irdma_dereg_ipaddr_event_cb(rf); 337 irdma_ib_unregister_device(iwdev); 338 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE; 339 req.enable_filter = false; 340 IRDMA_DI_REQ_HANDLER(peer, &req); 341 irdma_rt_deinit_hw(iwdev); 342 } else { 343 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, "Starting deferred opening %d (%d)\n", 344 rf->peer_info->pf_id, pf_if_d(peer)); 345 l2params.mtu = peer->mtu; 346 irdma_get_qos_info(&l2params, &peer->initial_qos_info); 347 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY) 348 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode; 349 350 status = irdma_rt_init_hw(iwdev, &l2params); 351 if (status) { 352 irdma_pr_err("RT init failed %d\n", status); 353 ib_dealloc_device(&iwdev->ibdev); 354 return; 355 } 356 status = irdma_ib_register_device(iwdev); 357 if (status) { 358 irdma_pr_err("Registration failed %d\n", status); 359 irdma_rt_deinit_hw(iwdev); 360 ib_dealloc_device(&iwdev->ibdev); 361 } 362 req.type = ICE_RDMA_EVENT_VSI_FILTER_UPDATE; 363 req.enable_filter = true; 364 IRDMA_DI_REQ_HANDLER(peer, &req); 365 irdma_reg_ipaddr_event_cb(rf); 366 irdma_debug(&rf->sc_dev, IRDMA_DEBUG_INIT, "Deferred opening finished %d (%d)\n", 367 rf->peer_info->pf_id, pf_if_d(peer)); 368 } 369 } 370 371 /** 372 * irdma_open - Callback for operation open for RDMA device 373 * @peer: the new peer interface structure 374 * 375 * Callback implementing the RDMA_OPEN function. Called by the ice driver to 376 * notify the RDMA client driver that a new device has been initialized. 377 */ 378 static int 379 irdma_open(struct ice_rdma_peer *peer) 380 { 381 struct ice_rdma_event event = {0}; 382 383 event.type = ICE_RDMA_EVENT_MTU_CHANGE; 384 event.mtu = peer->mtu; 385 386 irdma_event_handler(peer, &event); 387 388 return 0; 389 } 390 391 /** 392 * irdma_close - Callback to notify that a peer device is down 393 * @peer: the RDMA peer device being stopped 394 * 395 * Callback implementing the RDMA_CLOSE function. Called by the ice driver to 396 * notify the RDMA client driver that a peer device is being stopped. 397 */ 398 static int 399 irdma_close(struct ice_rdma_peer *peer) 400 { 401 /* 402 * This is called when ifconfig down. Keeping it for compatibility with ice. This event might be usefull for 403 * future. 404 */ 405 return 0; 406 } 407 408 /** 409 * irdma_alloc_pcidev - allocate memory for pcidev and populate data 410 * @peer: the new peer interface structure 411 * @rf: RDMA PCI function 412 */ 413 static int 414 irdma_alloc_pcidev(struct ice_rdma_peer *peer, struct irdma_pci_f *rf) 415 { 416 rf->pcidev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL); 417 if (!rf->pcidev) { 418 return -ENOMEM; 419 } 420 if (linux_pci_attach_device(rf->dev_ctx.dev, NULL, NULL, rf->pcidev)) 421 return -ENOMEM; 422 423 return 0; 424 } 425 426 /** 427 * irdma_dealloc_pcidev - deallocate memory for pcidev 428 * @rf: RDMA PCI function 429 */ 430 static void 431 irdma_dealloc_pcidev(struct irdma_pci_f *rf) 432 { 433 linux_pci_detach_device(rf->pcidev); 434 kfree(rf->pcidev); 435 } 436 437 /** 438 * irdma_fill_device_info - assign initial values to rf variables 439 * @iwdev: irdma device 440 * @peer: the peer interface structure 441 */ 442 static void 443 irdma_fill_device_info(struct irdma_device *iwdev, 444 struct ice_rdma_peer *peer) 445 { 446 struct irdma_pci_f *rf = iwdev->rf; 447 448 rf->peer_info = peer; 449 rf->gen_ops.register_qset = irdma_register_qset; 450 rf->gen_ops.unregister_qset = irdma_unregister_qset; 451 452 rf->rdma_ver = IRDMA_GEN_2; 453 rf->sc_dev.hw_attrs.uk_attrs.hw_rev = IRDMA_GEN_2; 454 rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT; 455 rf->rst_to = IRDMA_RST_TIMEOUT_HZ; 456 rf->check_fc = irdma_check_fc_for_qp; 457 irdma_set_rf_user_cfg_params(rf); 458 459 rf->default_vsi.vsi_idx = peer->pf_vsi_num; 460 rf->dev_ctx.dev = peer->dev; 461 rf->dev_ctx.mem_bus_space_tag = rman_get_bustag(peer->pci_mem); 462 rf->dev_ctx.mem_bus_space_handle = rman_get_bushandle(peer->pci_mem); 463 rf->dev_ctx.mem_bus_space_size = rman_get_size(peer->pci_mem); 464 465 rf->hw.dev_context = &rf->dev_ctx; 466 rf->hw.hw_addr = (u8 *)rman_get_virtual(peer->pci_mem); 467 rf->msix_count = peer->msix.count; 468 rf->msix_info.entry = peer->msix.base; 469 rf->msix_info.vector = peer->msix.count; 470 printf("%s:%d msix_info: %d %d %d\n", __func__, __LINE__, 471 rf->msix_count, rf->msix_info.entry, rf->msix_info.vector); 472 473 rf->iwdev = iwdev; 474 iwdev->netdev = peer->ifp; 475 iwdev->init_state = INITIAL_STATE; 476 iwdev->vsi_num = peer->pf_vsi_num; 477 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED; 478 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; 479 iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT; 480 iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT; 481 482 if (rf->protocol_used == IRDMA_ROCE_PROTOCOL_ONLY) { 483 iwdev->roce_mode = true; 484 } 485 } 486 487 /** 488 * irdma_probe - Callback to probe a new RDMA peer device 489 * @peer: the new peer interface structure 490 * 491 * Callback implementing the RDMA_PROBE function. Called by the ice driver to 492 * notify the RDMA client driver that a new device has been created 493 */ 494 static int 495 irdma_probe(struct ice_rdma_peer *peer) 496 { 497 struct irdma_device *iwdev; 498 struct irdma_pci_f *rf; 499 struct irdma_handler *hdl; 500 int err = 0; 501 502 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", 503 irdma_driver_version, peer, peer->pf_id, peer->ifp, 504 pf_if_d(peer), (void *)(uintptr_t)peer->pci_mem->r_bustag); 505 506 hdl = irdma_find_handler(peer); 507 if (hdl) 508 return -EBUSY; 509 510 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); 511 if (!hdl) 512 return -ENOMEM; 513 514 iwdev = (struct irdma_device *)ib_alloc_device(sizeof(*iwdev)); 515 if (!iwdev) { 516 kfree(hdl); 517 return -ENOMEM; 518 } 519 520 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL); 521 if (!iwdev->rf) { 522 ib_dealloc_device(&iwdev->ibdev); 523 kfree(hdl); 524 return -ENOMEM; 525 } 526 hdl->iwdev = iwdev; 527 iwdev->hdl = hdl; 528 529 irdma_init_tunable(iwdev->rf, pf_if_d(peer)); 530 irdma_fill_device_info(iwdev, peer); 531 rf = iwdev->rf; 532 533 if (irdma_alloc_pcidev(peer, rf)) 534 goto err_pcidev; 535 536 irdma_add_handler(hdl); 537 538 if (irdma_ctrl_init_hw(rf)) { 539 err = -EIO; 540 goto err_ctrl_init; 541 } 542 543 rf->dev_ctx.task_arg.peer = peer; 544 rf->dev_ctx.task_arg.iwdev = iwdev; 545 rf->dev_ctx.task_arg.peer = peer; 546 547 TASK_INIT(&hdl->deferred_task, 0, irdma_finalize_task, &rf->dev_ctx.task_arg); 548 hdl->deferred_tq = taskqueue_create_fast("irdma_defer", 549 M_NOWAIT, taskqueue_thread_enqueue, 550 &hdl->deferred_tq); 551 taskqueue_start_threads(&hdl->deferred_tq, 1, PI_NET, "irdma_defer_t"); 552 553 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task); 554 555 return 0; 556 557 err_ctrl_init: 558 irdma_del_handler(hdl); 559 irdma_dealloc_pcidev(rf); 560 err_pcidev: 561 kfree(iwdev->rf); 562 ib_dealloc_device(&iwdev->ibdev); 563 kfree(hdl); 564 565 return err; 566 } 567 568 /** 569 * irdma_remove - Callback to remove an RDMA peer device 570 * @peer: the new peer interface structure 571 * 572 * Callback implementing the RDMA_REMOVE function. Called by the ice driver to 573 * notify the RDMA client driver that the device wille be delated 574 */ 575 static int 576 irdma_remove(struct ice_rdma_peer *peer) 577 { 578 struct irdma_handler *hdl; 579 struct irdma_device *iwdev; 580 581 irdma_debug((struct irdma_sc_dev *)NULL, IRDMA_DEBUG_INIT, "removing %s\n", __FUNCTION__); 582 583 hdl = irdma_find_handler(peer); 584 if (!hdl) 585 return 0; 586 587 iwdev = hdl->iwdev; 588 589 if (iwdev->vsi.tc_change_pending) { 590 iwdev->vsi.tc_change_pending = false; 591 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_RESUME); 592 } 593 594 taskqueue_enqueue(hdl->deferred_tq, &hdl->deferred_task); 595 596 taskqueue_drain(hdl->deferred_tq, &hdl->deferred_task); 597 taskqueue_free(hdl->deferred_tq); 598 hdl->iwdev->rf->dev_ctx.task_arg.iwdev = NULL; 599 hdl->iwdev->rf->dev_ctx.task_arg.peer = NULL; 600 601 sysctl_ctx_free(&iwdev->rf->tun_info.irdma_sysctl_ctx); 602 hdl->iwdev->rf->tun_info.irdma_sysctl_tree = NULL; 603 604 irdma_ctrl_deinit_hw(iwdev->rf); 605 606 irdma_dealloc_pcidev(iwdev->rf); 607 608 irdma_del_handler(iwdev->hdl); 609 kfree(iwdev->hdl); 610 kfree(iwdev->rf); 611 ib_dealloc_device(&iwdev->ibdev); 612 irdma_pr_info("IRDMA hardware deinitialization complete\n"); 613 614 return 0; 615 } 616 617 /** 618 * irdma_prep_for_unregister - ensure the driver is ready to unregister 619 */ 620 static void 621 irdma_prep_for_unregister(void) 622 { 623 struct irdma_handler *hdl; 624 unsigned long flags; 625 bool hdl_valid; 626 627 do { 628 hdl_valid = false; 629 spin_lock_irqsave(&irdma_handler_lock, flags); 630 list_for_each_entry(hdl, &irdma_handlers, list) { 631 if (!hdl) 632 continue; 633 if (!hdl->iwdev->rf->peer_info) 634 continue; 635 hdl_valid = true; 636 break; 637 } 638 spin_unlock_irqrestore(&irdma_handler_lock, flags); 639 if (!hdl || !hdl_valid) 640 break; 641 IRDMA_CLOSE(hdl->iwdev->rf->peer_info); 642 IRDMA_REMOVE(hdl->iwdev->rf->peer_info); 643 } while (1); 644 } 645 646 static kobj_method_t irdma_methods[] = { 647 KOBJMETHOD(irdma_probe, irdma_probe), 648 KOBJMETHOD(irdma_open, irdma_open), 649 KOBJMETHOD(irdma_close, irdma_close), 650 KOBJMETHOD(irdma_remove, irdma_remove), 651 KOBJMETHOD(irdma_link_change, irdma_link_change), 652 KOBJMETHOD(irdma_event_handler, irdma_event_handler), 653 KOBJMETHOD_END 654 }; 655 656 /* declare irdma_class which extends the ice_rdma_di class */ 657 DEFINE_CLASS_1(irdma, irdma_class, irdma_methods, sizeof(struct ice_rdma_peer), ice_rdma_di_class); 658 659 static struct ice_rdma_info irdma_info = { 660 .major_version = ICE_RDMA_MAJOR_VERSION, 661 .minor_version = ICE_RDMA_MINOR_VERSION, 662 .patch_version = ICE_RDMA_PATCH_VERSION, 663 .rdma_class = &irdma_class, 664 }; 665 666 /** 667 * irdma_module_event_handler - Module event handler callback 668 * @mod: unused mod argument 669 * @what: the module event to handle 670 * @arg: unused module event argument 671 * 672 * Callback used by the FreeBSD module stack to notify the driver of module 673 * events. Used to implement custom handling for certain module events such as 674 * load and unload. 675 */ 676 static int 677 irdma_module_event_handler(module_t __unused mod, int what, void __unused * arg) 678 { 679 switch (what) { 680 case MOD_LOAD: 681 printf("Loading irdma module\n"); 682 return ice_rdma_register(&irdma_info); 683 case MOD_UNLOAD: 684 printf("Unloading irdma module\n"); 685 irdma_prep_for_unregister(); 686 ice_rdma_unregister(); 687 return (0); 688 default: 689 return (EOPNOTSUPP); 690 } 691 692 return (0); 693 } 694 695 static moduledata_t irdma_moduledata = { 696 "irdma", 697 irdma_module_event_handler, 698 NULL 699 }; 700 701 DECLARE_MODULE(irdma, irdma_moduledata, SI_SUB_LAST, SI_ORDER_ANY); 702 MODULE_VERSION(irdma, 1); 703 MODULE_DEPEND(irdma, ice, 1, 1, 1); 704 MODULE_DEPEND(irdma, ibcore, 1, 1, 1); 705