1 // SPDX-License-Identifier: GPL-2.0 2 /******************************************************************************* 3 * 4 * Intel Ethernet Controller XL710 Family Linux Driver 5 * Copyright(c) 2013 - 2017 Intel Corporation. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms and conditions of the GNU General Public License, 9 * version 2, as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 * 16 * You should have received a copy of the GNU General Public License along 17 * with this program. If not, see <http://www.gnu.org/licenses/>. 18 * 19 * The full GNU General Public License is included in this distribution in 20 * the file called "COPYING". 21 * 22 * Contact Information: 23 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 24 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 25 * 26 ******************************************************************************/ 27 28 #include <linux/list.h> 29 #include <linux/errno.h> 30 31 #include "i40e.h" 32 #include "i40e_prototype.h" 33 #include "i40e_client.h" 34 35 static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR; 36 static struct i40e_client *registered_client; 37 static LIST_HEAD(i40e_devices); 38 static DEFINE_MUTEX(i40e_device_mutex); 39 40 static int i40e_client_virtchnl_send(struct i40e_info *ldev, 41 struct i40e_client *client, 42 u32 vf_id, u8 *msg, u16 len); 43 44 static int i40e_client_setup_qvlist(struct i40e_info *ldev, 45 struct i40e_client *client, 46 struct i40e_qvlist_info *qvlist_info); 47 48 static void i40e_client_request_reset(struct i40e_info *ldev, 49 struct i40e_client *client, 50 u32 reset_level); 51 52 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, 53 struct i40e_client *client, 54 bool is_vf, u32 vf_id, 55 u32 flag, u32 valid_flag); 56 57 static struct i40e_ops i40e_lan_ops = { 58 .virtchnl_send = i40e_client_virtchnl_send, 59 .setup_qvlist = i40e_client_setup_qvlist, 60 .request_reset = i40e_client_request_reset, 61 .update_vsi_ctxt = i40e_client_update_vsi_ctxt, 62 }; 63 64 /** 65 * i40e_client_get_params - Get the params that can change at runtime 66 * @vsi: the VSI with the message 67 * @param: clinet param struct 68 * 69 **/ 70 static 71 int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params) 72 { 73 struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config; 74 int i = 0; 75 76 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { 77 u8 tc = dcb_cfg->etscfg.prioritytable[i]; 78 u16 qs_handle; 79 80 /* If TC is not enabled for VSI use TC0 for UP */ 81 if (!(vsi->tc_config.enabled_tc & BIT(tc))) 82 tc = 0; 83 84 qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]); 85 params->qos.prio_qos[i].tc = tc; 86 params->qos.prio_qos[i].qs_handle = qs_handle; 87 if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) { 88 dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n", 89 tc, vsi->id); 90 return -EINVAL; 91 } 92 } 93 94 params->mtu = vsi->netdev->mtu; 95 return 0; 96 } 97 98 /** 99 * i40e_notify_client_of_vf_msg - call the client vf message callback 100 * @vsi: the VSI with the message 101 * @vf_id: the absolute VF id that sent the message 102 * @msg: message buffer 103 * @len: length of the message 104 * 105 * If there is a client to this VSI, call the client 106 **/ 107 void 108 i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len) 109 { 110 struct i40e_pf *pf = vsi->back; 111 struct i40e_client_instance *cdev = pf->cinst; 112 113 if (!cdev || !cdev->client) 114 return; 115 if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) { 116 dev_dbg(&pf->pdev->dev, 117 "Cannot locate client instance virtual channel receive routine\n"); 118 return; 119 } 120 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 121 dev_dbg(&pf->pdev->dev, "Client is not open, abort virtchnl_receive\n"); 122 return; 123 } 124 cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client, 125 vf_id, msg, len); 126 } 127 128 /** 129 * i40e_notify_client_of_l2_param_changes - call the client notify callback 130 * @vsi: the VSI with l2 param changes 131 * 132 * If there is a client to this VSI, call the client 133 **/ 134 void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi) 135 { 136 struct i40e_pf *pf = vsi->back; 137 struct i40e_client_instance *cdev = pf->cinst; 138 struct i40e_params params; 139 140 if (!cdev || !cdev->client) 141 return; 142 if (!cdev->client->ops || !cdev->client->ops->l2_param_change) { 143 dev_dbg(&vsi->back->pdev->dev, 144 "Cannot locate client instance l2_param_change routine\n"); 145 return; 146 } 147 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 148 dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n"); 149 return; 150 } 151 memset(¶ms, 0, sizeof(params)); 152 i40e_client_get_params(vsi, ¶ms); 153 memcpy(&cdev->lan_info.params, ¶ms, sizeof(struct i40e_params)); 154 cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client, 155 ¶ms); 156 } 157 158 /** 159 * i40e_client_release_qvlist - release MSI-X vector mapping for client 160 * @ldev: pointer to L2 context. 161 * 162 **/ 163 static void i40e_client_release_qvlist(struct i40e_info *ldev) 164 { 165 struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info; 166 u32 i; 167 168 if (!ldev->qvlist_info) 169 return; 170 171 for (i = 0; i < qvlist_info->num_vectors; i++) { 172 struct i40e_pf *pf = ldev->pf; 173 struct i40e_qv_info *qv_info; 174 u32 reg_idx; 175 176 qv_info = &qvlist_info->qv_info[i]; 177 if (!qv_info) 178 continue; 179 reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1); 180 wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK); 181 } 182 kfree(ldev->qvlist_info); 183 ldev->qvlist_info = NULL; 184 } 185 186 /** 187 * i40e_notify_client_of_netdev_close - call the client close callback 188 * @vsi: the VSI with netdev closed 189 * @reset: true when close called due to a reset pending 190 * 191 * If there is a client to this netdev, call the client with close 192 **/ 193 void i40e_notify_client_of_netdev_close(struct i40e_vsi *vsi, bool reset) 194 { 195 struct i40e_pf *pf = vsi->back; 196 struct i40e_client_instance *cdev = pf->cinst; 197 198 if (!cdev || !cdev->client) 199 return; 200 if (!cdev->client->ops || !cdev->client->ops->close) { 201 dev_dbg(&vsi->back->pdev->dev, 202 "Cannot locate client instance close routine\n"); 203 return; 204 } 205 cdev->client->ops->close(&cdev->lan_info, cdev->client, reset); 206 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); 207 i40e_client_release_qvlist(&cdev->lan_info); 208 } 209 210 /** 211 * i40e_notify_client_of_vf_reset - call the client vf reset callback 212 * @pf: PF device pointer 213 * @vf_id: asolute id of VF being reset 214 * 215 * If there is a client attached to this PF, notify when a VF is reset 216 **/ 217 void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id) 218 { 219 struct i40e_client_instance *cdev = pf->cinst; 220 221 if (!cdev || !cdev->client) 222 return; 223 if (!cdev->client->ops || !cdev->client->ops->vf_reset) { 224 dev_dbg(&pf->pdev->dev, 225 "Cannot locate client instance VF reset routine\n"); 226 return; 227 } 228 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 229 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n"); 230 return; 231 } 232 cdev->client->ops->vf_reset(&cdev->lan_info, cdev->client, vf_id); 233 } 234 235 /** 236 * i40e_notify_client_of_vf_enable - call the client vf notification callback 237 * @pf: PF device pointer 238 * @num_vfs: the number of VFs currently enabled, 0 for disable 239 * 240 * If there is a client attached to this PF, call its VF notification routine 241 **/ 242 void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs) 243 { 244 struct i40e_client_instance *cdev = pf->cinst; 245 246 if (!cdev || !cdev->client) 247 return; 248 if (!cdev->client->ops || !cdev->client->ops->vf_enable) { 249 dev_dbg(&pf->pdev->dev, 250 "Cannot locate client instance VF enable routine\n"); 251 return; 252 } 253 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, 254 &cdev->state)) { 255 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n"); 256 return; 257 } 258 cdev->client->ops->vf_enable(&cdev->lan_info, cdev->client, num_vfs); 259 } 260 261 /** 262 * i40e_vf_client_capable - ask the client if it likes the specified VF 263 * @pf: PF device pointer 264 * @vf_id: the VF in question 265 * 266 * If there is a client of the specified type attached to this PF, call 267 * its vf_capable routine 268 **/ 269 int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id) 270 { 271 struct i40e_client_instance *cdev = pf->cinst; 272 int capable = false; 273 274 if (!cdev || !cdev->client) 275 goto out; 276 if (!cdev->client->ops || !cdev->client->ops->vf_capable) { 277 dev_dbg(&pf->pdev->dev, 278 "Cannot locate client instance VF capability routine\n"); 279 goto out; 280 } 281 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) 282 goto out; 283 284 capable = cdev->client->ops->vf_capable(&cdev->lan_info, 285 cdev->client, 286 vf_id); 287 out: 288 return capable; 289 } 290 291 void i40e_client_update_msix_info(struct i40e_pf *pf) 292 { 293 struct i40e_client_instance *cdev = pf->cinst; 294 295 if (!cdev || !cdev->client) 296 return; 297 298 cdev->lan_info.msix_count = pf->num_iwarp_msix; 299 cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector]; 300 } 301 302 /** 303 * i40e_client_add_instance - add a client instance struct to the instance list 304 * @pf: pointer to the board struct 305 * @client: pointer to a client struct in the client list. 306 * @existing: if there was already an existing instance 307 * 308 **/ 309 static void i40e_client_add_instance(struct i40e_pf *pf) 310 { 311 struct i40e_client_instance *cdev = NULL; 312 struct netdev_hw_addr *mac = NULL; 313 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 314 315 if (!registered_client || pf->cinst) 316 return; 317 318 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); 319 if (!cdev) 320 return; 321 322 cdev->lan_info.pf = (void *)pf; 323 cdev->lan_info.netdev = vsi->netdev; 324 cdev->lan_info.pcidev = pf->pdev; 325 cdev->lan_info.fid = pf->hw.pf_id; 326 cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF; 327 cdev->lan_info.hw_addr = pf->hw.hw_addr; 328 cdev->lan_info.ops = &i40e_lan_ops; 329 cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR; 330 cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR; 331 cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD; 332 cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver; 333 cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver; 334 cdev->lan_info.fw_build = pf->hw.aq.fw_build; 335 set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state); 336 337 if (i40e_client_get_params(vsi, &cdev->lan_info.params)) { 338 kfree(cdev); 339 cdev = NULL; 340 return; 341 } 342 343 mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list, 344 struct netdev_hw_addr, list); 345 if (mac) 346 ether_addr_copy(cdev->lan_info.lanmac, mac->addr); 347 else 348 dev_err(&pf->pdev->dev, "MAC address list is empty!\n"); 349 350 cdev->client = registered_client; 351 pf->cinst = cdev; 352 353 i40e_client_update_msix_info(pf); 354 } 355 356 /** 357 * i40e_client_del_instance - removes a client instance from the list 358 * @pf: pointer to the board struct 359 * 360 **/ 361 static 362 void i40e_client_del_instance(struct i40e_pf *pf) 363 { 364 kfree(pf->cinst); 365 pf->cinst = NULL; 366 } 367 368 /** 369 * i40e_client_subtask - client maintenance work 370 * @pf: board private structure 371 **/ 372 void i40e_client_subtask(struct i40e_pf *pf) 373 { 374 struct i40e_client *client = registered_client; 375 struct i40e_client_instance *cdev; 376 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 377 int ret = 0; 378 379 if (!test_and_clear_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state)) 380 return; 381 cdev = pf->cinst; 382 383 /* If we're down or resetting, just bail */ 384 if (test_bit(__I40E_DOWN, pf->state) || 385 test_bit(__I40E_CONFIG_BUSY, pf->state)) 386 return; 387 388 if (!client || !cdev) 389 return; 390 391 /* Here we handle client opens. If the client is down, and 392 * the netdev is registered, then open the client. 393 */ 394 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 395 if (vsi->netdev_registered && 396 client->ops && client->ops->open) { 397 set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); 398 ret = client->ops->open(&cdev->lan_info, client); 399 if (ret) { 400 /* Remove failed client instance */ 401 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, 402 &cdev->state); 403 i40e_client_del_instance(pf); 404 } 405 } 406 } 407 408 /* enable/disable PE TCP_ENA flag based on netdev down/up 409 */ 410 if (test_bit(__I40E_VSI_DOWN, vsi->state)) 411 i40e_client_update_vsi_ctxt(&cdev->lan_info, client, 412 0, 0, 0, 413 I40E_CLIENT_VSI_FLAG_TCP_ENABLE); 414 else 415 i40e_client_update_vsi_ctxt(&cdev->lan_info, client, 416 0, 0, 417 I40E_CLIENT_VSI_FLAG_TCP_ENABLE, 418 I40E_CLIENT_VSI_FLAG_TCP_ENABLE); 419 } 420 421 /** 422 * i40e_lan_add_device - add a lan device struct to the list of lan devices 423 * @pf: pointer to the board struct 424 * 425 * Returns 0 on success or none 0 on error 426 **/ 427 int i40e_lan_add_device(struct i40e_pf *pf) 428 { 429 struct i40e_device *ldev; 430 int ret = 0; 431 432 mutex_lock(&i40e_device_mutex); 433 list_for_each_entry(ldev, &i40e_devices, list) { 434 if (ldev->pf == pf) { 435 ret = -EEXIST; 436 goto out; 437 } 438 } 439 ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); 440 if (!ldev) { 441 ret = -ENOMEM; 442 goto out; 443 } 444 ldev->pf = pf; 445 INIT_LIST_HEAD(&ldev->list); 446 list_add(&ldev->list, &i40e_devices); 447 dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n", 448 pf->hw.pf_id, pf->hw.bus.bus_id, 449 pf->hw.bus.device, pf->hw.bus.func); 450 451 /* If a client has already been registered, we need to add an instance 452 * of it to our new LAN device. 453 */ 454 if (registered_client) 455 i40e_client_add_instance(pf); 456 457 /* Since in some cases register may have happened before a device gets 458 * added, we can schedule a subtask to go initiate the clients if 459 * they can be launched at probe time. 460 */ 461 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state); 462 i40e_service_event_schedule(pf); 463 464 out: 465 mutex_unlock(&i40e_device_mutex); 466 return ret; 467 } 468 469 /** 470 * i40e_lan_del_device - removes a lan device from the device list 471 * @pf: pointer to the board struct 472 * 473 * Returns 0 on success or non-0 on error 474 **/ 475 int i40e_lan_del_device(struct i40e_pf *pf) 476 { 477 struct i40e_device *ldev, *tmp; 478 int ret = -ENODEV; 479 480 /* First, remove any client instance. */ 481 i40e_client_del_instance(pf); 482 483 mutex_lock(&i40e_device_mutex); 484 list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) { 485 if (ldev->pf == pf) { 486 dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n", 487 pf->hw.pf_id, pf->hw.bus.bus_id, 488 pf->hw.bus.device, pf->hw.bus.func); 489 list_del(&ldev->list); 490 kfree(ldev); 491 ret = 0; 492 break; 493 } 494 } 495 mutex_unlock(&i40e_device_mutex); 496 return ret; 497 } 498 499 /** 500 * i40e_client_release - release client specific resources 501 * @client: pointer to the registered client 502 * 503 **/ 504 static void i40e_client_release(struct i40e_client *client) 505 { 506 struct i40e_client_instance *cdev; 507 struct i40e_device *ldev; 508 struct i40e_pf *pf; 509 510 mutex_lock(&i40e_device_mutex); 511 list_for_each_entry(ldev, &i40e_devices, list) { 512 pf = ldev->pf; 513 cdev = pf->cinst; 514 if (!cdev) 515 continue; 516 517 while (test_and_set_bit(__I40E_SERVICE_SCHED, 518 pf->state)) 519 usleep_range(500, 1000); 520 521 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 522 if (client->ops && client->ops->close) 523 client->ops->close(&cdev->lan_info, client, 524 false); 525 i40e_client_release_qvlist(&cdev->lan_info); 526 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); 527 528 dev_warn(&pf->pdev->dev, 529 "Client %s instance for PF id %d closed\n", 530 client->name, pf->hw.pf_id); 531 } 532 /* delete the client instance */ 533 i40e_client_del_instance(pf); 534 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n", 535 client->name); 536 clear_bit(__I40E_SERVICE_SCHED, pf->state); 537 } 538 mutex_unlock(&i40e_device_mutex); 539 } 540 541 /** 542 * i40e_client_prepare - prepare client specific resources 543 * @client: pointer to the registered client 544 * 545 **/ 546 static void i40e_client_prepare(struct i40e_client *client) 547 { 548 struct i40e_device *ldev; 549 struct i40e_pf *pf; 550 551 mutex_lock(&i40e_device_mutex); 552 list_for_each_entry(ldev, &i40e_devices, list) { 553 pf = ldev->pf; 554 i40e_client_add_instance(pf); 555 /* Start the client subtask */ 556 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state); 557 i40e_service_event_schedule(pf); 558 } 559 mutex_unlock(&i40e_device_mutex); 560 } 561 562 /** 563 * i40e_client_virtchnl_send - TBD 564 * @ldev: pointer to L2 context 565 * @client: Client pointer 566 * @vf_id: absolute VF identifier 567 * @msg: message buffer 568 * @len: length of message buffer 569 * 570 * Return 0 on success or < 0 on error 571 **/ 572 static int i40e_client_virtchnl_send(struct i40e_info *ldev, 573 struct i40e_client *client, 574 u32 vf_id, u8 *msg, u16 len) 575 { 576 struct i40e_pf *pf = ldev->pf; 577 struct i40e_hw *hw = &pf->hw; 578 i40e_status err; 579 580 err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP, 581 0, msg, len, NULL); 582 if (err) 583 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n", 584 err, hw->aq.asq_last_status); 585 586 return err; 587 } 588 589 /** 590 * i40e_client_setup_qvlist 591 * @ldev: pointer to L2 context. 592 * @client: Client pointer. 593 * @qv_info: queue and vector list 594 * 595 * Return 0 on success or < 0 on error 596 **/ 597 static int i40e_client_setup_qvlist(struct i40e_info *ldev, 598 struct i40e_client *client, 599 struct i40e_qvlist_info *qvlist_info) 600 { 601 struct i40e_pf *pf = ldev->pf; 602 struct i40e_hw *hw = &pf->hw; 603 struct i40e_qv_info *qv_info; 604 u32 v_idx, i, reg_idx, reg; 605 u32 size; 606 607 size = sizeof(struct i40e_qvlist_info) + 608 (sizeof(struct i40e_qv_info) * (qvlist_info->num_vectors - 1)); 609 ldev->qvlist_info = kzalloc(size, GFP_KERNEL); 610 if (!ldev->qvlist_info) 611 return -ENOMEM; 612 ldev->qvlist_info->num_vectors = qvlist_info->num_vectors; 613 614 for (i = 0; i < qvlist_info->num_vectors; i++) { 615 qv_info = &qvlist_info->qv_info[i]; 616 if (!qv_info) 617 continue; 618 v_idx = qv_info->v_idx; 619 620 /* Validate vector id belongs to this client */ 621 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) || 622 (v_idx < pf->iwarp_base_vector)) 623 goto err; 624 625 ldev->qvlist_info->qv_info[i] = *qv_info; 626 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1); 627 628 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) { 629 /* Special case - No CEQ mapped on this vector */ 630 wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK); 631 } else { 632 reg = (qv_info->ceq_idx & 633 I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) | 634 (I40E_QUEUE_TYPE_PE_CEQ << 635 I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 636 wr32(hw, reg_idx, reg); 637 638 reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK | 639 (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) | 640 (qv_info->itr_idx << 641 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) | 642 (I40E_QUEUE_END_OF_LIST << 643 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT)); 644 wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg); 645 } 646 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) { 647 reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK | 648 (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) | 649 (qv_info->itr_idx << 650 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT)); 651 652 wr32(hw, I40E_PFINT_AEQCTL, reg); 653 } 654 } 655 /* Mitigate sync problems with iwarp VF driver */ 656 i40e_flush(hw); 657 return 0; 658 err: 659 kfree(ldev->qvlist_info); 660 ldev->qvlist_info = NULL; 661 return -EINVAL; 662 } 663 664 /** 665 * i40e_client_request_reset 666 * @ldev: pointer to L2 context. 667 * @client: Client pointer. 668 * @level: reset level 669 **/ 670 static void i40e_client_request_reset(struct i40e_info *ldev, 671 struct i40e_client *client, 672 u32 reset_level) 673 { 674 struct i40e_pf *pf = ldev->pf; 675 676 switch (reset_level) { 677 case I40E_CLIENT_RESET_LEVEL_PF: 678 set_bit(__I40E_PF_RESET_REQUESTED, pf->state); 679 break; 680 case I40E_CLIENT_RESET_LEVEL_CORE: 681 set_bit(__I40E_PF_RESET_REQUESTED, pf->state); 682 break; 683 default: 684 dev_warn(&pf->pdev->dev, 685 "Client for PF id %d requested an unsupported reset: %d.\n", 686 pf->hw.pf_id, reset_level); 687 break; 688 } 689 690 i40e_service_event_schedule(pf); 691 } 692 693 /** 694 * i40e_client_update_vsi_ctxt 695 * @ldev: pointer to L2 context. 696 * @client: Client pointer. 697 * @is_vf: if this for the VF 698 * @vf_id: if is_vf true this carries the vf_id 699 * @flag: Any device level setting that needs to be done for PE 700 * @valid_flag: Bits in this match up and enable changing of flag bits 701 * 702 * Return 0 on success or < 0 on error 703 **/ 704 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, 705 struct i40e_client *client, 706 bool is_vf, u32 vf_id, 707 u32 flag, u32 valid_flag) 708 { 709 struct i40e_pf *pf = ldev->pf; 710 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 711 struct i40e_vsi_context ctxt; 712 bool update = true; 713 i40e_status err; 714 715 /* TODO: for now do not allow setting VF's VSI setting */ 716 if (is_vf) 717 return -EINVAL; 718 719 ctxt.seid = pf->main_vsi_seid; 720 ctxt.pf_num = pf->hw.pf_id; 721 err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL); 722 ctxt.flags = I40E_AQ_VSI_TYPE_PF; 723 if (err) { 724 dev_info(&pf->pdev->dev, 725 "couldn't get PF vsi config, err %s aq_err %s\n", 726 i40e_stat_str(&pf->hw, err), 727 i40e_aq_str(&pf->hw, 728 pf->hw.aq.asq_last_status)); 729 return -ENOENT; 730 } 731 732 if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) && 733 (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) { 734 ctxt.info.valid_sections = 735 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID); 736 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA; 737 } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) && 738 !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) { 739 ctxt.info.valid_sections = 740 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID); 741 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA; 742 } else { 743 update = false; 744 dev_warn(&pf->pdev->dev, 745 "Client for PF id %d request an unsupported Config: %x.\n", 746 pf->hw.pf_id, flag); 747 } 748 749 if (update) { 750 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); 751 if (err) { 752 dev_info(&pf->pdev->dev, 753 "update VSI ctxt for PE failed, err %s aq_err %s\n", 754 i40e_stat_str(&pf->hw, err), 755 i40e_aq_str(&pf->hw, 756 pf->hw.aq.asq_last_status)); 757 } 758 } 759 return err; 760 } 761 762 /** 763 * i40e_register_client - Register a i40e client driver with the L2 driver 764 * @client: pointer to the i40e_client struct 765 * 766 * Returns 0 on success or non-0 on error 767 **/ 768 int i40e_register_client(struct i40e_client *client) 769 { 770 int ret = 0; 771 772 if (!client) { 773 ret = -EIO; 774 goto out; 775 } 776 777 if (strlen(client->name) == 0) { 778 pr_info("i40e: Failed to register client with no name\n"); 779 ret = -EIO; 780 goto out; 781 } 782 783 if (registered_client) { 784 pr_info("i40e: Client %s has already been registered!\n", 785 client->name); 786 ret = -EEXIST; 787 goto out; 788 } 789 790 if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) || 791 (client->version.minor != I40E_CLIENT_VERSION_MINOR)) { 792 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n", 793 client->name); 794 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n", 795 client->version.major, client->version.minor, 796 client->version.build, 797 i40e_client_interface_version_str); 798 ret = -EIO; 799 goto out; 800 } 801 802 registered_client = client; 803 804 i40e_client_prepare(client); 805 806 pr_info("i40e: Registered client %s\n", client->name); 807 out: 808 return ret; 809 } 810 EXPORT_SYMBOL(i40e_register_client); 811 812 /** 813 * i40e_unregister_client - Unregister a i40e client driver with the L2 driver 814 * @client: pointer to the i40e_client struct 815 * 816 * Returns 0 on success or non-0 on error 817 **/ 818 int i40e_unregister_client(struct i40e_client *client) 819 { 820 int ret = 0; 821 822 if (registered_client != client) { 823 pr_info("i40e: Client %s has not been registered\n", 824 client->name); 825 ret = -ENODEV; 826 goto out; 827 } 828 registered_client = NULL; 829 /* When a unregister request comes through we would have to send 830 * a close for each of the client instances that were opened. 831 * client_release function is called to handle this. 832 */ 833 i40e_client_release(client); 834 835 pr_info("i40e: Unregistered client %s\n", client->name); 836 out: 837 return ret; 838 } 839 EXPORT_SYMBOL(i40e_unregister_client); 840