1 /******************************************************************************* 2 * 3 * Intel Ethernet Controller XL710 Family Linux Driver 4 * Copyright(c) 2013 - 2017 Intel Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program. If not, see <http://www.gnu.org/licenses/>. 17 * 18 * The full GNU General Public License is included in this distribution in 19 * the file called "COPYING". 20 * 21 * Contact Information: 22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 * 25 ******************************************************************************/ 26 27 #include <linux/list.h> 28 #include <linux/errno.h> 29 30 #include "i40e.h" 31 #include "i40e_prototype.h" 32 #include "i40e_client.h" 33 34 static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR; 35 static struct i40e_client *registered_client; 36 static LIST_HEAD(i40e_devices); 37 static DEFINE_MUTEX(i40e_device_mutex); 38 39 static int i40e_client_virtchnl_send(struct i40e_info *ldev, 40 struct i40e_client *client, 41 u32 vf_id, u8 *msg, u16 len); 42 43 static int i40e_client_setup_qvlist(struct i40e_info *ldev, 44 struct i40e_client *client, 45 struct i40e_qvlist_info *qvlist_info); 46 47 static void i40e_client_request_reset(struct i40e_info *ldev, 48 struct i40e_client *client, 49 u32 reset_level); 50 51 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, 52 struct i40e_client *client, 53 bool is_vf, u32 vf_id, 54 u32 flag, u32 valid_flag); 55 56 static struct i40e_ops i40e_lan_ops = { 57 .virtchnl_send = i40e_client_virtchnl_send, 58 .setup_qvlist = i40e_client_setup_qvlist, 59 .request_reset = i40e_client_request_reset, 60 .update_vsi_ctxt = i40e_client_update_vsi_ctxt, 61 }; 62 63 /** 64 * i40e_client_get_params - Get the params that can change at runtime 65 * @vsi: the VSI with the message 66 * @param: clinet param struct 67 * 68 **/ 69 static 70 int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params) 71 { 72 struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config; 73 int i = 0; 74 75 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { 76 u8 tc = dcb_cfg->etscfg.prioritytable[i]; 77 u16 qs_handle; 78 79 /* If TC is not enabled for VSI use TC0 for UP */ 80 if (!(vsi->tc_config.enabled_tc & BIT(tc))) 81 tc = 0; 82 83 qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]); 84 params->qos.prio_qos[i].tc = tc; 85 params->qos.prio_qos[i].qs_handle = qs_handle; 86 if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) { 87 dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n", 88 tc, vsi->id); 89 return -EINVAL; 90 } 91 } 92 93 params->mtu = vsi->netdev->mtu; 94 return 0; 95 } 96 97 /** 98 * i40e_notify_client_of_vf_msg - call the client vf message callback 99 * @vsi: the VSI with the message 100 * @vf_id: the absolute VF id that sent the message 101 * @msg: message buffer 102 * @len: length of the message 103 * 104 * If there is a client to this VSI, call the client 105 **/ 106 void 107 i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len) 108 { 109 struct i40e_pf *pf = vsi->back; 110 struct i40e_client_instance *cdev = pf->cinst; 111 112 if (!cdev || !cdev->client) 113 return; 114 if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) { 115 dev_dbg(&pf->pdev->dev, 116 "Cannot locate client instance virtual channel receive routine\n"); 117 return; 118 } 119 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 120 dev_dbg(&pf->pdev->dev, "Client is not open, abort virtchnl_receive\n"); 121 return; 122 } 123 cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client, 124 vf_id, msg, len); 125 } 126 127 /** 128 * i40e_notify_client_of_l2_param_changes - call the client notify callback 129 * @vsi: the VSI with l2 param changes 130 * 131 * If there is a client to this VSI, call the client 132 **/ 133 void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi) 134 { 135 struct i40e_pf *pf = vsi->back; 136 struct i40e_client_instance *cdev = pf->cinst; 137 struct i40e_params params; 138 139 if (!cdev || !cdev->client) 140 return; 141 if (!cdev->client->ops || !cdev->client->ops->l2_param_change) { 142 dev_dbg(&vsi->back->pdev->dev, 143 "Cannot locate client instance l2_param_change routine\n"); 144 return; 145 } 146 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 147 dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n"); 148 return; 149 } 150 memset(¶ms, 0, sizeof(params)); 151 i40e_client_get_params(vsi, ¶ms); 152 memcpy(&cdev->lan_info.params, ¶ms, sizeof(struct i40e_params)); 153 cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client, 154 ¶ms); 155 } 156 157 /** 158 * i40e_client_release_qvlist - release MSI-X vector mapping for client 159 * @ldev: pointer to L2 context. 160 * 161 **/ 162 static void i40e_client_release_qvlist(struct i40e_info *ldev) 163 { 164 struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info; 165 u32 i; 166 167 if (!ldev->qvlist_info) 168 return; 169 170 for (i = 0; i < qvlist_info->num_vectors; i++) { 171 struct i40e_pf *pf = ldev->pf; 172 struct i40e_qv_info *qv_info; 173 u32 reg_idx; 174 175 qv_info = &qvlist_info->qv_info[i]; 176 if (!qv_info) 177 continue; 178 reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1); 179 wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK); 180 } 181 kfree(ldev->qvlist_info); 182 ldev->qvlist_info = NULL; 183 } 184 185 /** 186 * i40e_notify_client_of_netdev_close - call the client close callback 187 * @vsi: the VSI with netdev closed 188 * @reset: true when close called due to a reset pending 189 * 190 * If there is a client to this netdev, call the client with close 191 **/ 192 void i40e_notify_client_of_netdev_close(struct i40e_vsi *vsi, bool reset) 193 { 194 struct i40e_pf *pf = vsi->back; 195 struct i40e_client_instance *cdev = pf->cinst; 196 197 if (!cdev || !cdev->client) 198 return; 199 if (!cdev->client->ops || !cdev->client->ops->close) { 200 dev_dbg(&vsi->back->pdev->dev, 201 "Cannot locate client instance close routine\n"); 202 return; 203 } 204 cdev->client->ops->close(&cdev->lan_info, cdev->client, reset); 205 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); 206 i40e_client_release_qvlist(&cdev->lan_info); 207 } 208 209 /** 210 * i40e_notify_client_of_vf_reset - call the client vf reset callback 211 * @pf: PF device pointer 212 * @vf_id: asolute id of VF being reset 213 * 214 * If there is a client attached to this PF, notify when a VF is reset 215 **/ 216 void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id) 217 { 218 struct i40e_client_instance *cdev = pf->cinst; 219 220 if (!cdev || !cdev->client) 221 return; 222 if (!cdev->client->ops || !cdev->client->ops->vf_reset) { 223 dev_dbg(&pf->pdev->dev, 224 "Cannot locate client instance VF reset routine\n"); 225 return; 226 } 227 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 228 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n"); 229 return; 230 } 231 cdev->client->ops->vf_reset(&cdev->lan_info, cdev->client, vf_id); 232 } 233 234 /** 235 * i40e_notify_client_of_vf_enable - call the client vf notification callback 236 * @pf: PF device pointer 237 * @num_vfs: the number of VFs currently enabled, 0 for disable 238 * 239 * If there is a client attached to this PF, call its VF notification routine 240 **/ 241 void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs) 242 { 243 struct i40e_client_instance *cdev = pf->cinst; 244 245 if (!cdev || !cdev->client) 246 return; 247 if (!cdev->client->ops || !cdev->client->ops->vf_enable) { 248 dev_dbg(&pf->pdev->dev, 249 "Cannot locate client instance VF enable routine\n"); 250 return; 251 } 252 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, 253 &cdev->state)) { 254 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n"); 255 return; 256 } 257 cdev->client->ops->vf_enable(&cdev->lan_info, cdev->client, num_vfs); 258 } 259 260 /** 261 * i40e_vf_client_capable - ask the client if it likes the specified VF 262 * @pf: PF device pointer 263 * @vf_id: the VF in question 264 * 265 * If there is a client of the specified type attached to this PF, call 266 * its vf_capable routine 267 **/ 268 int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id) 269 { 270 struct i40e_client_instance *cdev = pf->cinst; 271 int capable = false; 272 273 if (!cdev || !cdev->client) 274 goto out; 275 if (!cdev->client->ops || !cdev->client->ops->vf_capable) { 276 dev_dbg(&pf->pdev->dev, 277 "Cannot locate client instance VF capability routine\n"); 278 goto out; 279 } 280 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) 281 goto out; 282 283 capable = cdev->client->ops->vf_capable(&cdev->lan_info, 284 cdev->client, 285 vf_id); 286 out: 287 return capable; 288 } 289 290 /** 291 * i40e_client_add_instance - add a client instance struct to the instance list 292 * @pf: pointer to the board struct 293 * @client: pointer to a client struct in the client list. 294 * @existing: if there was already an existing instance 295 * 296 **/ 297 static void i40e_client_add_instance(struct i40e_pf *pf) 298 { 299 struct i40e_client_instance *cdev = NULL; 300 struct netdev_hw_addr *mac = NULL; 301 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 302 303 if (!registered_client || pf->cinst) 304 return; 305 306 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); 307 if (!cdev) 308 return; 309 310 cdev->lan_info.pf = (void *)pf; 311 cdev->lan_info.netdev = vsi->netdev; 312 cdev->lan_info.pcidev = pf->pdev; 313 cdev->lan_info.fid = pf->hw.pf_id; 314 cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF; 315 cdev->lan_info.hw_addr = pf->hw.hw_addr; 316 cdev->lan_info.ops = &i40e_lan_ops; 317 cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR; 318 cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR; 319 cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD; 320 cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver; 321 cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver; 322 cdev->lan_info.fw_build = pf->hw.aq.fw_build; 323 set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state); 324 325 if (i40e_client_get_params(vsi, &cdev->lan_info.params)) { 326 kfree(cdev); 327 cdev = NULL; 328 return; 329 } 330 331 cdev->lan_info.msix_count = pf->num_iwarp_msix; 332 cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector]; 333 334 mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list, 335 struct netdev_hw_addr, list); 336 if (mac) 337 ether_addr_copy(cdev->lan_info.lanmac, mac->addr); 338 else 339 dev_err(&pf->pdev->dev, "MAC address list is empty!\n"); 340 341 cdev->client = registered_client; 342 pf->cinst = cdev; 343 } 344 345 /** 346 * i40e_client_del_instance - removes a client instance from the list 347 * @pf: pointer to the board struct 348 * 349 **/ 350 static 351 void i40e_client_del_instance(struct i40e_pf *pf) 352 { 353 kfree(pf->cinst); 354 pf->cinst = NULL; 355 } 356 357 /** 358 * i40e_client_subtask - client maintenance work 359 * @pf: board private structure 360 **/ 361 void i40e_client_subtask(struct i40e_pf *pf) 362 { 363 struct i40e_client *client = registered_client; 364 struct i40e_client_instance *cdev; 365 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 366 int ret = 0; 367 368 if (!(pf->flags & I40E_FLAG_SERVICE_CLIENT_REQUESTED)) 369 return; 370 pf->flags &= ~I40E_FLAG_SERVICE_CLIENT_REQUESTED; 371 cdev = pf->cinst; 372 373 /* If we're down or resetting, just bail */ 374 if (test_bit(__I40E_DOWN, pf->state) || 375 test_bit(__I40E_CONFIG_BUSY, pf->state)) 376 return; 377 378 if (!client || !cdev) 379 return; 380 381 /* Here we handle client opens. If the client is down, and 382 * the netdev is registered, then open the client. 383 */ 384 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 385 if (vsi->netdev_registered && 386 client->ops && client->ops->open) { 387 set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); 388 ret = client->ops->open(&cdev->lan_info, client); 389 if (ret) { 390 /* Remove failed client instance */ 391 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, 392 &cdev->state); 393 i40e_client_del_instance(pf); 394 } 395 } 396 } 397 398 /* enable/disable PE TCP_ENA flag based on netdev down/up 399 */ 400 if (test_bit(__I40E_VSI_DOWN, vsi->state)) 401 i40e_client_update_vsi_ctxt(&cdev->lan_info, client, 402 0, 0, 0, 403 I40E_CLIENT_VSI_FLAG_TCP_ENABLE); 404 else 405 i40e_client_update_vsi_ctxt(&cdev->lan_info, client, 406 0, 0, 407 I40E_CLIENT_VSI_FLAG_TCP_ENABLE, 408 I40E_CLIENT_VSI_FLAG_TCP_ENABLE); 409 } 410 411 /** 412 * i40e_lan_add_device - add a lan device struct to the list of lan devices 413 * @pf: pointer to the board struct 414 * 415 * Returns 0 on success or none 0 on error 416 **/ 417 int i40e_lan_add_device(struct i40e_pf *pf) 418 { 419 struct i40e_device *ldev; 420 int ret = 0; 421 422 mutex_lock(&i40e_device_mutex); 423 list_for_each_entry(ldev, &i40e_devices, list) { 424 if (ldev->pf == pf) { 425 ret = -EEXIST; 426 goto out; 427 } 428 } 429 ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); 430 if (!ldev) { 431 ret = -ENOMEM; 432 goto out; 433 } 434 ldev->pf = pf; 435 INIT_LIST_HEAD(&ldev->list); 436 list_add(&ldev->list, &i40e_devices); 437 dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n", 438 pf->hw.pf_id, pf->hw.bus.bus_id, 439 pf->hw.bus.device, pf->hw.bus.func); 440 441 /* If a client has already been registered, we need to add an instance 442 * of it to our new LAN device. 443 */ 444 if (registered_client) 445 i40e_client_add_instance(pf); 446 447 /* Since in some cases register may have happened before a device gets 448 * added, we can schedule a subtask to go initiate the clients if 449 * they can be launched at probe time. 450 */ 451 pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED; 452 i40e_service_event_schedule(pf); 453 454 out: 455 mutex_unlock(&i40e_device_mutex); 456 return ret; 457 } 458 459 /** 460 * i40e_lan_del_device - removes a lan device from the device list 461 * @pf: pointer to the board struct 462 * 463 * Returns 0 on success or non-0 on error 464 **/ 465 int i40e_lan_del_device(struct i40e_pf *pf) 466 { 467 struct i40e_device *ldev, *tmp; 468 int ret = -ENODEV; 469 470 /* First, remove any client instance. */ 471 i40e_client_del_instance(pf); 472 473 mutex_lock(&i40e_device_mutex); 474 list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) { 475 if (ldev->pf == pf) { 476 dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n", 477 pf->hw.pf_id, pf->hw.bus.bus_id, 478 pf->hw.bus.device, pf->hw.bus.func); 479 list_del(&ldev->list); 480 kfree(ldev); 481 ret = 0; 482 break; 483 } 484 } 485 mutex_unlock(&i40e_device_mutex); 486 return ret; 487 } 488 489 /** 490 * i40e_client_release - release client specific resources 491 * @client: pointer to the registered client 492 * 493 **/ 494 static void i40e_client_release(struct i40e_client *client) 495 { 496 struct i40e_client_instance *cdev; 497 struct i40e_device *ldev; 498 struct i40e_pf *pf; 499 500 mutex_lock(&i40e_device_mutex); 501 list_for_each_entry(ldev, &i40e_devices, list) { 502 pf = ldev->pf; 503 cdev = pf->cinst; 504 if (!cdev) 505 continue; 506 507 while (test_and_set_bit(__I40E_SERVICE_SCHED, 508 pf->state)) 509 usleep_range(500, 1000); 510 511 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { 512 if (client->ops && client->ops->close) 513 client->ops->close(&cdev->lan_info, client, 514 false); 515 i40e_client_release_qvlist(&cdev->lan_info); 516 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); 517 518 dev_warn(&pf->pdev->dev, 519 "Client %s instance for PF id %d closed\n", 520 client->name, pf->hw.pf_id); 521 } 522 /* delete the client instance */ 523 i40e_client_del_instance(pf); 524 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n", 525 client->name); 526 clear_bit(__I40E_SERVICE_SCHED, pf->state); 527 } 528 mutex_unlock(&i40e_device_mutex); 529 } 530 531 /** 532 * i40e_client_prepare - prepare client specific resources 533 * @client: pointer to the registered client 534 * 535 **/ 536 static void i40e_client_prepare(struct i40e_client *client) 537 { 538 struct i40e_device *ldev; 539 struct i40e_pf *pf; 540 541 mutex_lock(&i40e_device_mutex); 542 list_for_each_entry(ldev, &i40e_devices, list) { 543 pf = ldev->pf; 544 i40e_client_add_instance(pf); 545 /* Start the client subtask */ 546 pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED; 547 i40e_service_event_schedule(pf); 548 } 549 mutex_unlock(&i40e_device_mutex); 550 } 551 552 /** 553 * i40e_client_virtchnl_send - TBD 554 * @ldev: pointer to L2 context 555 * @client: Client pointer 556 * @vf_id: absolute VF identifier 557 * @msg: message buffer 558 * @len: length of message buffer 559 * 560 * Return 0 on success or < 0 on error 561 **/ 562 static int i40e_client_virtchnl_send(struct i40e_info *ldev, 563 struct i40e_client *client, 564 u32 vf_id, u8 *msg, u16 len) 565 { 566 struct i40e_pf *pf = ldev->pf; 567 struct i40e_hw *hw = &pf->hw; 568 i40e_status err; 569 570 err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP, 571 0, msg, len, NULL); 572 if (err) 573 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n", 574 err, hw->aq.asq_last_status); 575 576 return err; 577 } 578 579 /** 580 * i40e_client_setup_qvlist 581 * @ldev: pointer to L2 context. 582 * @client: Client pointer. 583 * @qv_info: queue and vector list 584 * 585 * Return 0 on success or < 0 on error 586 **/ 587 static int i40e_client_setup_qvlist(struct i40e_info *ldev, 588 struct i40e_client *client, 589 struct i40e_qvlist_info *qvlist_info) 590 { 591 struct i40e_pf *pf = ldev->pf; 592 struct i40e_hw *hw = &pf->hw; 593 struct i40e_qv_info *qv_info; 594 u32 v_idx, i, reg_idx, reg; 595 u32 size; 596 597 size = sizeof(struct i40e_qvlist_info) + 598 (sizeof(struct i40e_qv_info) * (qvlist_info->num_vectors - 1)); 599 ldev->qvlist_info = kzalloc(size, GFP_KERNEL); 600 if (!ldev->qvlist_info) 601 return -ENOMEM; 602 ldev->qvlist_info->num_vectors = qvlist_info->num_vectors; 603 604 for (i = 0; i < qvlist_info->num_vectors; i++) { 605 qv_info = &qvlist_info->qv_info[i]; 606 if (!qv_info) 607 continue; 608 v_idx = qv_info->v_idx; 609 610 /* Validate vector id belongs to this client */ 611 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) || 612 (v_idx < pf->iwarp_base_vector)) 613 goto err; 614 615 ldev->qvlist_info->qv_info[i] = *qv_info; 616 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1); 617 618 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) { 619 /* Special case - No CEQ mapped on this vector */ 620 wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK); 621 } else { 622 reg = (qv_info->ceq_idx & 623 I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) | 624 (I40E_QUEUE_TYPE_PE_CEQ << 625 I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 626 wr32(hw, reg_idx, reg); 627 628 reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK | 629 (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) | 630 (qv_info->itr_idx << 631 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) | 632 (I40E_QUEUE_END_OF_LIST << 633 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT)); 634 wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg); 635 } 636 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) { 637 reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK | 638 (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) | 639 (qv_info->itr_idx << 640 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT)); 641 642 wr32(hw, I40E_PFINT_AEQCTL, reg); 643 } 644 } 645 /* Mitigate sync problems with iwarp VF driver */ 646 i40e_flush(hw); 647 return 0; 648 err: 649 kfree(ldev->qvlist_info); 650 ldev->qvlist_info = NULL; 651 return -EINVAL; 652 } 653 654 /** 655 * i40e_client_request_reset 656 * @ldev: pointer to L2 context. 657 * @client: Client pointer. 658 * @level: reset level 659 **/ 660 static void i40e_client_request_reset(struct i40e_info *ldev, 661 struct i40e_client *client, 662 u32 reset_level) 663 { 664 struct i40e_pf *pf = ldev->pf; 665 666 switch (reset_level) { 667 case I40E_CLIENT_RESET_LEVEL_PF: 668 set_bit(__I40E_PF_RESET_REQUESTED, pf->state); 669 break; 670 case I40E_CLIENT_RESET_LEVEL_CORE: 671 set_bit(__I40E_PF_RESET_REQUESTED, pf->state); 672 break; 673 default: 674 dev_warn(&pf->pdev->dev, 675 "Client for PF id %d requested an unsupported reset: %d.\n", 676 pf->hw.pf_id, reset_level); 677 break; 678 } 679 680 i40e_service_event_schedule(pf); 681 } 682 683 /** 684 * i40e_client_update_vsi_ctxt 685 * @ldev: pointer to L2 context. 686 * @client: Client pointer. 687 * @is_vf: if this for the VF 688 * @vf_id: if is_vf true this carries the vf_id 689 * @flag: Any device level setting that needs to be done for PE 690 * @valid_flag: Bits in this match up and enable changing of flag bits 691 * 692 * Return 0 on success or < 0 on error 693 **/ 694 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, 695 struct i40e_client *client, 696 bool is_vf, u32 vf_id, 697 u32 flag, u32 valid_flag) 698 { 699 struct i40e_pf *pf = ldev->pf; 700 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 701 struct i40e_vsi_context ctxt; 702 bool update = true; 703 i40e_status err; 704 705 /* TODO: for now do not allow setting VF's VSI setting */ 706 if (is_vf) 707 return -EINVAL; 708 709 ctxt.seid = pf->main_vsi_seid; 710 ctxt.pf_num = pf->hw.pf_id; 711 err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL); 712 ctxt.flags = I40E_AQ_VSI_TYPE_PF; 713 if (err) { 714 dev_info(&pf->pdev->dev, 715 "couldn't get PF vsi config, err %s aq_err %s\n", 716 i40e_stat_str(&pf->hw, err), 717 i40e_aq_str(&pf->hw, 718 pf->hw.aq.asq_last_status)); 719 return -ENOENT; 720 } 721 722 if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) && 723 (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) { 724 ctxt.info.valid_sections = 725 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID); 726 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA; 727 } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) && 728 !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) { 729 ctxt.info.valid_sections = 730 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID); 731 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA; 732 } else { 733 update = false; 734 dev_warn(&pf->pdev->dev, 735 "Client for PF id %d request an unsupported Config: %x.\n", 736 pf->hw.pf_id, flag); 737 } 738 739 if (update) { 740 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); 741 if (err) { 742 dev_info(&pf->pdev->dev, 743 "update VSI ctxt for PE failed, err %s aq_err %s\n", 744 i40e_stat_str(&pf->hw, err), 745 i40e_aq_str(&pf->hw, 746 pf->hw.aq.asq_last_status)); 747 } 748 } 749 return err; 750 } 751 752 /** 753 * i40e_register_client - Register a i40e client driver with the L2 driver 754 * @client: pointer to the i40e_client struct 755 * 756 * Returns 0 on success or non-0 on error 757 **/ 758 int i40e_register_client(struct i40e_client *client) 759 { 760 int ret = 0; 761 762 if (!client) { 763 ret = -EIO; 764 goto out; 765 } 766 767 if (strlen(client->name) == 0) { 768 pr_info("i40e: Failed to register client with no name\n"); 769 ret = -EIO; 770 goto out; 771 } 772 773 if (registered_client) { 774 pr_info("i40e: Client %s has already been registered!\n", 775 client->name); 776 ret = -EEXIST; 777 goto out; 778 } 779 780 if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) || 781 (client->version.minor != I40E_CLIENT_VERSION_MINOR)) { 782 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n", 783 client->name); 784 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n", 785 client->version.major, client->version.minor, 786 client->version.build, 787 i40e_client_interface_version_str); 788 ret = -EIO; 789 goto out; 790 } 791 792 registered_client = client; 793 794 i40e_client_prepare(client); 795 796 pr_info("i40e: Registered client %s\n", client->name); 797 out: 798 return ret; 799 } 800 EXPORT_SYMBOL(i40e_register_client); 801 802 /** 803 * i40e_unregister_client - Unregister a i40e client driver with the L2 driver 804 * @client: pointer to the i40e_client struct 805 * 806 * Returns 0 on success or non-0 on error 807 **/ 808 int i40e_unregister_client(struct i40e_client *client) 809 { 810 int ret = 0; 811 812 if (registered_client != client) { 813 pr_info("i40e: Client %s has not been registered\n", 814 client->name); 815 ret = -ENODEV; 816 goto out; 817 } 818 registered_client = NULL; 819 /* When a unregister request comes through we would have to send 820 * a close for each of the client instances that were opened. 821 * client_release function is called to handle this. 822 */ 823 i40e_client_release(client); 824 825 pr_info("i40e: Unregistered client %s\n", client->name); 826 out: 827 return ret; 828 } 829 EXPORT_SYMBOL(i40e_unregister_client); 830