drivers/net/ethernet/intel/i40e/i40e_client.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #include <linux/list.h>
   5 #include <linux/errno.h>
   6
   7 #include "i40e.h"
   8 #include "i40e_prototype.h"
   9 #include "i40e_client.h"
  10
  11 static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR;
  12 static struct i40e_client *registered_client;
  13 static LIST_HEAD(i40e_devices);
  14 static DEFINE_MUTEX(i40e_device_mutex);
  15
  16 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
  17                                      struct i40e_client *client,
  18                                      u32 vf_id, u8 *msg, u16 len);
  19
  20 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
  21                                     struct i40e_client *client,
  22                                     struct i40e_qvlist_info *qvlist_info);
  23
  24 static void i40e_client_request_reset(struct i40e_info *ldev,
  25                                       struct i40e_client *client,
  26                                       u32 reset_level);
  27
  28 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
  29                                        struct i40e_client *client,
  30                                        bool is_vf, u32 vf_id,
  31                                        u32 flag, u32 valid_flag);
  32
  33 static struct i40e_ops i40e_lan_ops = {
  34         .virtchnl_send = i40e_client_virtchnl_send,
  35         .setup_qvlist = i40e_client_setup_qvlist,
  36         .request_reset = i40e_client_request_reset,
  37         .update_vsi_ctxt = i40e_client_update_vsi_ctxt,
  38 };
  39
  40 /**
  41  * i40e_client_get_params - Get the params that can change at runtime
  42  * @vsi: the VSI with the message
  43  * @params: client param struct
  44  *
  45  **/
  46 static
  47 int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params)
  48 {
  49         struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config;
  50         int i = 0;
  51
  52         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
  53                 u8 tc = dcb_cfg->etscfg.prioritytable[i];
  54                 u16 qs_handle;
  55
  56                 /* If TC is not enabled for VSI use TC0 for UP */
  57                 if (!(vsi->tc_config.enabled_tc & BIT(tc)))
  58                         tc = 0;
  59
  60                 qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]);
  61                 params->qos.prio_qos[i].tc = tc;
  62                 params->qos.prio_qos[i].qs_handle = qs_handle;
  63                 if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) {
  64                         dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n",
  65                                 tc, vsi->id);
  66                         return -EINVAL;
  67                 }
  68         }
  69
  70         params->mtu = vsi->netdev->mtu;
  71         return 0;
  72 }
  73
  74 /**
  75  * i40e_notify_client_of_vf_msg - call the client vf message callback
  76  * @vsi: the VSI with the message
  77  * @vf_id: the absolute VF id that sent the message
  78  * @msg: message buffer
  79  * @len: length of the message
  80  *
  81  * If there is a client to this VSI, call the client
  82  **/
  83 void
  84 i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len)
  85 {
  86         struct i40e_pf *pf = vsi->back;
  87         struct i40e_client_instance *cdev = pf->cinst;
  88
  89         if (!cdev || !cdev->client)
  90                 return;
  91         if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) {
  92                 dev_dbg(&pf->pdev->dev,
  93                         "Cannot locate client instance virtual channel receive routine\n");
  94                 return;
  95         }
  96         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
  97                 dev_dbg(&pf->pdev->dev, "Client is not open, abort virtchnl_receive\n");
  98                 return;
  99         }
 100         cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client,
 101                                             vf_id, msg, len);
 102 }
 103
 104 /**
 105  * i40e_notify_client_of_l2_param_changes - call the client notify callback
 106  * @vsi: the VSI with l2 param changes
 107  *
 108  * If there is a client to this VSI, call the client
 109  **/
 110 void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi)
 111 {
 112         struct i40e_pf *pf = vsi->back;
 113         struct i40e_client_instance *cdev = pf->cinst;
 114         struct i40e_params params;
 115
 116         if (!cdev || !cdev->client)
 117                 return;
 118         if (!cdev->client->ops || !cdev->client->ops->l2_param_change) {
 119                 dev_dbg(&vsi->back->pdev->dev,
 120                         "Cannot locate client instance l2_param_change routine\n");
 121                 return;
 122         }
 123         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 124                 dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n");
 125                 return;
 126         }
 127         memset(&params, 0, sizeof(params));
 128         i40e_client_get_params(vsi, &params);
 129         memcpy(&cdev->lan_info.params, &params, sizeof(struct i40e_params));
 130         cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client,
 131                                            &params);
 132 }
 133
 134 /**
 135  * i40e_client_release_qvlist - release MSI-X vector mapping for client
 136  * @ldev: pointer to L2 context.
 137  *
 138  **/
 139 static void i40e_client_release_qvlist(struct i40e_info *ldev)
 140 {
 141         struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info;
 142         u32 i;
 143
 144         if (!ldev->qvlist_info)
 145                 return;
 146
 147         for (i = 0; i < qvlist_info->num_vectors; i++) {
 148                 struct i40e_pf *pf = ldev->pf;
 149                 struct i40e_qv_info *qv_info;
 150                 u32 reg_idx;
 151
 152                 qv_info = &qvlist_info->qv_info[i];
 153                 if (!qv_info)
 154                         continue;
 155                 reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1);
 156                 wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
 157         }
 158         kfree(ldev->qvlist_info);
 159         ldev->qvlist_info = NULL;
 160 }
 161
 162 /**
 163  * i40e_notify_client_of_netdev_close - call the client close callback
 164  * @vsi: the VSI with netdev closed
 165  * @reset: true when close called due to a reset pending
 166  *
 167  * If there is a client to this netdev, call the client with close
 168  **/
 169 void i40e_notify_client_of_netdev_close(struct i40e_vsi *vsi, bool reset)
 170 {
 171         struct i40e_pf *pf = vsi->back;
 172         struct i40e_client_instance *cdev = pf->cinst;
 173
 174         if (!cdev || !cdev->client)
 175                 return;
 176         if (!cdev->client->ops || !cdev->client->ops->close) {
 177                 dev_dbg(&vsi->back->pdev->dev,
 178                         "Cannot locate client instance close routine\n");
 179                 return;
 180         }
 181         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 182                 dev_dbg(&pf->pdev->dev, "Client is not open, abort close\n");
 183                 return;
 184         }
 185         cdev->client->ops->close(&cdev->lan_info, cdev->client, reset);
 186         clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 187         i40e_client_release_qvlist(&cdev->lan_info);
 188 }
 189
 190 /**
 191  * i40e_notify_client_of_vf_reset - call the client vf reset callback
 192  * @pf: PF device pointer
 193  * @vf_id: asolute id of VF being reset
 194  *
 195  * If there is a client attached to this PF, notify when a VF is reset
 196  **/
 197 void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id)
 198 {
 199         struct i40e_client_instance *cdev = pf->cinst;
 200
 201         if (!cdev || !cdev->client)
 202                 return;
 203         if (!cdev->client->ops || !cdev->client->ops->vf_reset) {
 204                 dev_dbg(&pf->pdev->dev,
 205                         "Cannot locate client instance VF reset routine\n");
 206                 return;
 207         }
 208         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,  &cdev->state)) {
 209                 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n");
 210                 return;
 211         }
 212         cdev->client->ops->vf_reset(&cdev->lan_info, cdev->client, vf_id);
 213 }
 214
 215 /**
 216  * i40e_notify_client_of_vf_enable - call the client vf notification callback
 217  * @pf: PF device pointer
 218  * @num_vfs: the number of VFs currently enabled, 0 for disable
 219  *
 220  * If there is a client attached to this PF, call its VF notification routine
 221  **/
 222 void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs)
 223 {
 224         struct i40e_client_instance *cdev = pf->cinst;
 225
 226         if (!cdev || !cdev->client)
 227                 return;
 228         if (!cdev->client->ops || !cdev->client->ops->vf_enable) {
 229                 dev_dbg(&pf->pdev->dev,
 230                         "Cannot locate client instance VF enable routine\n");
 231                 return;
 232         }
 233         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
 234                       &cdev->state)) {
 235                 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n");
 236                 return;
 237         }
 238         cdev->client->ops->vf_enable(&cdev->lan_info, cdev->client, num_vfs);
 239 }
 240
 241 /**
 242  * i40e_vf_client_capable - ask the client if it likes the specified VF
 243  * @pf: PF device pointer
 244  * @vf_id: the VF in question
 245  *
 246  * If there is a client of the specified type attached to this PF, call
 247  * its vf_capable routine
 248  **/
 249 int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id)
 250 {
 251         struct i40e_client_instance *cdev = pf->cinst;
 252         int capable = false;
 253
 254         if (!cdev || !cdev->client)
 255                 goto out;
 256         if (!cdev->client->ops || !cdev->client->ops->vf_capable) {
 257                 dev_dbg(&pf->pdev->dev,
 258                         "Cannot locate client instance VF capability routine\n");
 259                 goto out;
 260         }
 261         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state))
 262                 goto out;
 263
 264         capable = cdev->client->ops->vf_capable(&cdev->lan_info,
 265                                                 cdev->client,
 266                                                 vf_id);
 267 out:
 268         return capable;
 269 }
 270
 271 void i40e_client_update_msix_info(struct i40e_pf *pf)
 272 {
 273         struct i40e_client_instance *cdev = pf->cinst;
 274
 275         if (!cdev || !cdev->client)
 276                 return;
 277
 278         cdev->lan_info.msix_count = pf->num_iwarp_msix;
 279         cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector];
 280 }
 281
 282 /**
 283  * i40e_client_add_instance - add a client instance struct to the instance list
 284  * @pf: pointer to the board struct
 285  * @client: pointer to a client struct in the client list.
 286  * @existing: if there was already an existing instance
 287  *
 288  **/
 289 static void i40e_client_add_instance(struct i40e_pf *pf)
 290 {
 291         struct i40e_client_instance *cdev = NULL;
 292         struct netdev_hw_addr *mac = NULL;
 293         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 294
 295         if (!registered_client || pf->cinst)
 296                 return;
 297
 298         cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
 299         if (!cdev)
 300                 return;
 301
 302         cdev->lan_info.pf = (void *)pf;
 303         cdev->lan_info.netdev = vsi->netdev;
 304         cdev->lan_info.pcidev = pf->pdev;
 305         cdev->lan_info.fid = pf->hw.pf_id;
 306         cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF;
 307         cdev->lan_info.hw_addr = pf->hw.hw_addr;
 308         cdev->lan_info.ops = &i40e_lan_ops;
 309         cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR;
 310         cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR;
 311         cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD;
 312         cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver;
 313         cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver;
 314         cdev->lan_info.fw_build = pf->hw.aq.fw_build;
 315         set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state);
 316
 317         if (i40e_client_get_params(vsi, &cdev->lan_info.params)) {
 318                 kfree(cdev);
 319                 cdev = NULL;
 320                 return;
 321         }
 322
 323         mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list,
 324                                struct netdev_hw_addr, list);
 325         if (mac)
 326                 ether_addr_copy(cdev->lan_info.lanmac, mac->addr);
 327         else
 328                 dev_err(&pf->pdev->dev, "MAC address list is empty!\n");
 329
 330         cdev->client = registered_client;
 331         pf->cinst = cdev;
 332
 333         i40e_client_update_msix_info(pf);
 334 }
 335
 336 /**
 337  * i40e_client_del_instance - removes a client instance from the list
 338  * @pf: pointer to the board struct
 339  *
 340  **/
 341 static
 342 void i40e_client_del_instance(struct i40e_pf *pf)
 343 {
 344         kfree(pf->cinst);
 345         pf->cinst = NULL;
 346 }
 347
 348 /**
 349  * i40e_client_subtask - client maintenance work
 350  * @pf: board private structure
 351  **/
 352 void i40e_client_subtask(struct i40e_pf *pf)
 353 {
 354         struct i40e_client *client = registered_client;
 355         struct i40e_client_instance *cdev;
 356         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 357         int ret = 0;
 358
 359         if (!test_and_clear_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state))
 360                 return;
 361         cdev = pf->cinst;
 362
 363         /* If we're down or resetting, just bail */
 364         if (test_bit(__I40E_DOWN, pf->state) ||
 365             test_bit(__I40E_CONFIG_BUSY, pf->state))
 366                 return;
 367
 368         if (!client || !cdev)
 369                 return;
 370
 371         /* Here we handle client opens. If the client is down, and
 372          * the netdev is registered, then open the client.
 373          */
 374         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 375                 if (vsi->netdev_registered &&
 376                     client->ops && client->ops->open) {
 377                         set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 378                         ret = client->ops->open(&cdev->lan_info, client);
 379                         if (ret) {
 380                                 /* Remove failed client instance */
 381                                 clear_bit(__I40E_CLIENT_INSTANCE_OPENED,
 382                                           &cdev->state);
 383                                 return;
 384                         }
 385                 }
 386         }
 387
 388         /* enable/disable PE TCP_ENA flag based on netdev down/up
 389          */
 390         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 391                 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
 392                                             0, 0, 0,
 393                                             I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
 394         else
 395                 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
 396                                             0, 0,
 397                                             I40E_CLIENT_VSI_FLAG_TCP_ENABLE,
 398                                             I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
 399 }
 400
 401 /**
 402  * i40e_lan_add_device - add a lan device struct to the list of lan devices
 403  * @pf: pointer to the board struct
 404  *
 405  * Returns 0 on success or none 0 on error
 406  **/
 407 int i40e_lan_add_device(struct i40e_pf *pf)
 408 {
 409         struct i40e_device *ldev;
 410         int ret = 0;
 411
 412         mutex_lock(&i40e_device_mutex);
 413         list_for_each_entry(ldev, &i40e_devices, list) {
 414                 if (ldev->pf == pf) {
 415                         ret = -EEXIST;
 416                         goto out;
 417                 }
 418         }
 419         ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
 420         if (!ldev) {
 421                 ret = -ENOMEM;
 422                 goto out;
 423         }
 424         ldev->pf = pf;
 425         INIT_LIST_HEAD(&ldev->list);
 426         list_add(&ldev->list, &i40e_devices);
 427         dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
 428                  pf->hw.pf_id, pf->hw.bus.bus_id,
 429                  pf->hw.bus.device, pf->hw.bus.func);
 430
 431         /* If a client has already been registered, we need to add an instance
 432          * of it to our new LAN device.
 433          */
 434         if (registered_client)
 435                 i40e_client_add_instance(pf);
 436
 437         /* Since in some cases register may have happened before a device gets
 438          * added, we can schedule a subtask to go initiate the clients if
 439          * they can be launched at probe time.
 440          */
 441         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
 442         i40e_service_event_schedule(pf);
 443
 444 out:
 445         mutex_unlock(&i40e_device_mutex);
 446         return ret;
 447 }
 448
 449 /**
 450  * i40e_lan_del_device - removes a lan device from the device list
 451  * @pf: pointer to the board struct
 452  *
 453  * Returns 0 on success or non-0 on error
 454  **/
 455 int i40e_lan_del_device(struct i40e_pf *pf)
 456 {
 457         struct i40e_device *ldev, *tmp;
 458         int ret = -ENODEV;
 459
 460         /* First, remove any client instance. */
 461         i40e_client_del_instance(pf);
 462
 463         mutex_lock(&i40e_device_mutex);
 464         list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
 465                 if (ldev->pf == pf) {
 466                         dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
 467                                  pf->hw.pf_id, pf->hw.bus.bus_id,
 468                                  pf->hw.bus.device, pf->hw.bus.func);
 469                         list_del(&ldev->list);
 470                         kfree(ldev);
 471                         ret = 0;
 472                         break;
 473                 }
 474         }
 475         mutex_unlock(&i40e_device_mutex);
 476         return ret;
 477 }
 478
 479 /**
 480  * i40e_client_release - release client specific resources
 481  * @client: pointer to the registered client
 482  *
 483  **/
 484 static void i40e_client_release(struct i40e_client *client)
 485 {
 486         struct i40e_client_instance *cdev;
 487         struct i40e_device *ldev;
 488         struct i40e_pf *pf;
 489
 490         mutex_lock(&i40e_device_mutex);
 491         list_for_each_entry(ldev, &i40e_devices, list) {
 492                 pf = ldev->pf;
 493                 cdev = pf->cinst;
 494                 if (!cdev)
 495                         continue;
 496
 497                 while (test_and_set_bit(__I40E_SERVICE_SCHED,
 498                                         pf->state))
 499                         usleep_range(500, 1000);
 500
 501                 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 502                         if (client->ops && client->ops->close)
 503                                 client->ops->close(&cdev->lan_info, client,
 504                                                    false);
 505                         i40e_client_release_qvlist(&cdev->lan_info);
 506                         clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 507
 508                         dev_warn(&pf->pdev->dev,
 509                                  "Client %s instance for PF id %d closed\n",
 510                                  client->name, pf->hw.pf_id);
 511                 }
 512                 /* delete the client instance */
 513                 i40e_client_del_instance(pf);
 514                 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n",
 515                          client->name);
 516                 clear_bit(__I40E_SERVICE_SCHED, pf->state);
 517         }
 518         mutex_unlock(&i40e_device_mutex);
 519 }
 520
 521 /**
 522  * i40e_client_prepare - prepare client specific resources
 523  * @client: pointer to the registered client
 524  *
 525  **/
 526 static void i40e_client_prepare(struct i40e_client *client)
 527 {
 528         struct i40e_device *ldev;
 529         struct i40e_pf *pf;
 530
 531         mutex_lock(&i40e_device_mutex);
 532         list_for_each_entry(ldev, &i40e_devices, list) {
 533                 pf = ldev->pf;
 534                 i40e_client_add_instance(pf);
 535                 /* Start the client subtask */
 536                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
 537                 i40e_service_event_schedule(pf);
 538         }
 539         mutex_unlock(&i40e_device_mutex);
 540 }
 541
 542 /**
 543  * i40e_client_virtchnl_send - TBD
 544  * @ldev: pointer to L2 context
 545  * @client: Client pointer
 546  * @vf_id: absolute VF identifier
 547  * @msg: message buffer
 548  * @len: length of message buffer
 549  *
 550  * Return 0 on success or < 0 on error
 551  **/
 552 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
 553                                      struct i40e_client *client,
 554                                      u32 vf_id, u8 *msg, u16 len)
 555 {
 556         struct i40e_pf *pf = ldev->pf;
 557         struct i40e_hw *hw = &pf->hw;
 558         i40e_status err;
 559
 560         err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP,
 561                                      0, msg, len, NULL);
 562         if (err)
 563                 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
 564                         err, hw->aq.asq_last_status);
 565
 566         return err;
 567 }
 568
 569 /**
 570  * i40e_client_setup_qvlist
 571  * @ldev: pointer to L2 context.
 572  * @client: Client pointer.
 573  * @qvlist_info: queue and vector list
 574  *
 575  * Return 0 on success or < 0 on error
 576  **/
 577 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
 578                                     struct i40e_client *client,
 579                                     struct i40e_qvlist_info *qvlist_info)
 580 {
 581         struct i40e_pf *pf = ldev->pf;
 582         struct i40e_hw *hw = &pf->hw;
 583         struct i40e_qv_info *qv_info;
 584         u32 v_idx, i, reg_idx, reg;
 585         u32 size;
 586
 587         size = sizeof(struct i40e_qvlist_info) +
 588                (sizeof(struct i40e_qv_info) * (qvlist_info->num_vectors - 1));
 589         ldev->qvlist_info = kzalloc(size, GFP_KERNEL);
 590         if (!ldev->qvlist_info)
 591                 return -ENOMEM;
 592         ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
 593
 594         for (i = 0; i < qvlist_info->num_vectors; i++) {
 595                 qv_info = &qvlist_info->qv_info[i];
 596                 if (!qv_info)
 597                         continue;
 598                 v_idx = qv_info->v_idx;
 599
 600                 /* Validate vector id belongs to this client */
 601                 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
 602                     (v_idx < pf->iwarp_base_vector))
 603                         goto err;
 604
 605                 ldev->qvlist_info->qv_info[i] = *qv_info;
 606                 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
 607
 608                 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
 609                         /* Special case - No CEQ mapped on this vector */
 610                         wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
 611                 } else {
 612                         reg = (qv_info->ceq_idx &
 613                                I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
 614                                (I40E_QUEUE_TYPE_PE_CEQ <<
 615                                I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
 616                         wr32(hw, reg_idx, reg);
 617
 618                         reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
 619                                (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
 620                                (qv_info->itr_idx <<
 621                                 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
 622                                (I40E_QUEUE_END_OF_LIST <<
 623                                 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
 624                         wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
 625                 }
 626                 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
 627                         reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
 628                                (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
 629                                (qv_info->itr_idx <<
 630                                 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
 631
 632                         wr32(hw, I40E_PFINT_AEQCTL, reg);
 633                 }
 634         }
 635         /* Mitigate sync problems with iwarp VF driver */
 636         i40e_flush(hw);
 637         return 0;
 638 err:
 639         kfree(ldev->qvlist_info);
 640         ldev->qvlist_info = NULL;
 641         return -EINVAL;
 642 }
 643
 644 /**
 645  * i40e_client_request_reset
 646  * @ldev: pointer to L2 context.
 647  * @client: Client pointer.
 648  * @reset_level: reset level
 649  **/
 650 static void i40e_client_request_reset(struct i40e_info *ldev,
 651                                       struct i40e_client *client,
 652                                       u32 reset_level)
 653 {
 654         struct i40e_pf *pf = ldev->pf;
 655
 656         switch (reset_level) {
 657         case I40E_CLIENT_RESET_LEVEL_PF:
 658                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 659                 break;
 660         case I40E_CLIENT_RESET_LEVEL_CORE:
 661                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 662                 break;
 663         default:
 664                 dev_warn(&pf->pdev->dev,
 665                          "Client for PF id %d requested an unsupported reset: %d.\n",
 666                          pf->hw.pf_id, reset_level);
 667                 break;
 668         }
 669
 670         i40e_service_event_schedule(pf);
 671 }
 672
 673 /**
 674  * i40e_client_update_vsi_ctxt
 675  * @ldev: pointer to L2 context.
 676  * @client: Client pointer.
 677  * @is_vf: if this for the VF
 678  * @vf_id: if is_vf true this carries the vf_id
 679  * @flag: Any device level setting that needs to be done for PE
 680  * @valid_flag: Bits in this match up and enable changing of flag bits
 681  *
 682  * Return 0 on success or < 0 on error
 683  **/
 684 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
 685                                        struct i40e_client *client,
 686                                        bool is_vf, u32 vf_id,
 687                                        u32 flag, u32 valid_flag)
 688 {
 689         struct i40e_pf *pf = ldev->pf;
 690         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 691         struct i40e_vsi_context ctxt;
 692         bool update = true;
 693         i40e_status err;
 694
 695         /* TODO: for now do not allow setting VF's VSI setting */
 696         if (is_vf)
 697                 return -EINVAL;
 698
 699         ctxt.seid = pf->main_vsi_seid;
 700         ctxt.pf_num = pf->hw.pf_id;
 701         err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
 702         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
 703         if (err) {
 704                 dev_info(&pf->pdev->dev,
 705                          "couldn't get PF vsi config, err %s aq_err %s\n",
 706                          i40e_stat_str(&pf->hw, err),
 707                          i40e_aq_str(&pf->hw,
 708                                      pf->hw.aq.asq_last_status));
 709                 return -ENOENT;
 710         }
 711
 712         if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
 713             (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
 714                 ctxt.info.valid_sections =
 715                         cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
 716                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
 717         } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
 718                   !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
 719                 ctxt.info.valid_sections =
 720                         cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
 721                 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
 722         } else {
 723                 update = false;
 724                 dev_warn(&pf->pdev->dev,
 725                          "Client for PF id %d request an unsupported Config: %x.\n",
 726                          pf->hw.pf_id, flag);
 727         }
 728
 729         if (update) {
 730                 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
 731                 if (err) {
 732                         dev_info(&pf->pdev->dev,
 733                                  "update VSI ctxt for PE failed, err %s aq_err %s\n",
 734                                  i40e_stat_str(&pf->hw, err),
 735                                  i40e_aq_str(&pf->hw,
 736                                              pf->hw.aq.asq_last_status));
 737                 }
 738         }
 739         return err;
 740 }
 741
 742 /**
 743  * i40e_register_client - Register a i40e client driver with the L2 driver
 744  * @client: pointer to the i40e_client struct
 745  *
 746  * Returns 0 on success or non-0 on error
 747  **/
 748 int i40e_register_client(struct i40e_client *client)
 749 {
 750         int ret = 0;
 751
 752         if (!client) {
 753                 ret = -EIO;
 754                 goto out;
 755         }
 756
 757         if (strlen(client->name) == 0) {
 758                 pr_info("i40e: Failed to register client with no name\n");
 759                 ret = -EIO;
 760                 goto out;
 761         }
 762
 763         if (registered_client) {
 764                 pr_info("i40e: Client %s has already been registered!\n",
 765                         client->name);
 766                 ret = -EEXIST;
 767                 goto out;
 768         }
 769
 770         if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) ||
 771             (client->version.minor != I40E_CLIENT_VERSION_MINOR)) {
 772                 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n",
 773                         client->name);
 774                 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n",
 775                         client->version.major, client->version.minor,
 776                         client->version.build,
 777                         i40e_client_interface_version_str);
 778                 ret = -EIO;
 779                 goto out;
 780         }
 781
 782         registered_client = client;
 783
 784         i40e_client_prepare(client);
 785
 786         pr_info("i40e: Registered client %s\n", client->name);
 787 out:
 788         return ret;
 789 }
 790 EXPORT_SYMBOL(i40e_register_client);
 791
 792 /**
 793  * i40e_unregister_client - Unregister a i40e client driver with the L2 driver
 794  * @client: pointer to the i40e_client struct
 795  *
 796  * Returns 0 on success or non-0 on error
 797  **/
 798 int i40e_unregister_client(struct i40e_client *client)
 799 {
 800         int ret = 0;
 801
 802         if (registered_client != client) {
 803                 pr_info("i40e: Client %s has not been registered\n",
 804                         client->name);
 805                 ret = -ENODEV;
 806                 goto out;
 807         }
 808         registered_client = NULL;
 809         /* When a unregister request comes through we would have to send
 810          * a close for each of the client instances that were opened.
 811          * client_release function is called to handle this.
 812          */
 813         i40e_client_release(client);
 814
 815         pr_info("i40e: Unregistered client %s\n", client->name);
 816 out:
 817         return ret;
 818 }
 819 EXPORT_SYMBOL(i40e_unregister_client);