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

   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(&params, 0, sizeof(params));
 151         i40e_client_get_params(vsi, &params);
 152         memcpy(&cdev->lan_info.params, &params, sizeof(struct i40e_params));
 153         cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client,
 154                                            &params);
 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, but
 382          * the netdev is up, then open the client.
 383          */
 384         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 385                 if (!test_bit(__I40E_VSI_DOWN, vsi->state) &&
 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         } else {
 397         /* Likewise for client close. If the client is up, but the netdev
 398          * is down, then close the client.
 399          */
 400                 if (test_bit(__I40E_VSI_DOWN, vsi->state) &&
 401                     client->ops && client->ops->close) {
 402                         clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 403                         client->ops->close(&cdev->lan_info, client, false);
 404                         i40e_client_release_qvlist(&cdev->lan_info);
 405                 }
 406         }
 407 }
 408
 409 /**
 410  * i40e_lan_add_device - add a lan device struct to the list of lan devices
 411  * @pf: pointer to the board struct
 412  *
 413  * Returns 0 on success or none 0 on error
 414  **/
 415 int i40e_lan_add_device(struct i40e_pf *pf)
 416 {
 417         struct i40e_device *ldev;
 418         int ret = 0;
 419
 420         mutex_lock(&i40e_device_mutex);
 421         list_for_each_entry(ldev, &i40e_devices, list) {
 422                 if (ldev->pf == pf) {
 423                         ret = -EEXIST;
 424                         goto out;
 425                 }
 426         }
 427         ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
 428         if (!ldev) {
 429                 ret = -ENOMEM;
 430                 goto out;
 431         }
 432         ldev->pf = pf;
 433         INIT_LIST_HEAD(&ldev->list);
 434         list_add(&ldev->list, &i40e_devices);
 435         dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
 436                  pf->hw.pf_id, pf->hw.bus.bus_id,
 437                  pf->hw.bus.device, pf->hw.bus.func);
 438
 439         /* If a client has already been registered, we need to add an instance
 440          * of it to our new LAN device.
 441          */
 442         if (registered_client)
 443                 i40e_client_add_instance(pf);
 444
 445         /* Since in some cases register may have happened before a device gets
 446          * added, we can schedule a subtask to go initiate the clients if
 447          * they can be launched at probe time.
 448          */
 449         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
 450         i40e_service_event_schedule(pf);
 451
 452 out:
 453         mutex_unlock(&i40e_device_mutex);
 454         return ret;
 455 }
 456
 457 /**
 458  * i40e_lan_del_device - removes a lan device from the device list
 459  * @pf: pointer to the board struct
 460  *
 461  * Returns 0 on success or non-0 on error
 462  **/
 463 int i40e_lan_del_device(struct i40e_pf *pf)
 464 {
 465         struct i40e_device *ldev, *tmp;
 466         int ret = -ENODEV;
 467
 468         /* First, remove any client instance. */
 469         i40e_client_del_instance(pf);
 470
 471         mutex_lock(&i40e_device_mutex);
 472         list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
 473                 if (ldev->pf == pf) {
 474                         dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
 475                                  pf->hw.pf_id, pf->hw.bus.bus_id,
 476                                  pf->hw.bus.device, pf->hw.bus.func);
 477                         list_del(&ldev->list);
 478                         kfree(ldev);
 479                         ret = 0;
 480                         break;
 481                 }
 482         }
 483         mutex_unlock(&i40e_device_mutex);
 484         return ret;
 485 }
 486
 487 /**
 488  * i40e_client_release - release client specific resources
 489  * @client: pointer to the registered client
 490  *
 491  **/
 492 static void i40e_client_release(struct i40e_client *client)
 493 {
 494         struct i40e_client_instance *cdev;
 495         struct i40e_device *ldev;
 496         struct i40e_pf *pf;
 497
 498         mutex_lock(&i40e_device_mutex);
 499         list_for_each_entry(ldev, &i40e_devices, list) {
 500                 pf = ldev->pf;
 501                 cdev = pf->cinst;
 502                 if (!cdev)
 503                         continue;
 504
 505                 while (test_and_set_bit(__I40E_SERVICE_SCHED,
 506                                         pf->state))
 507                         usleep_range(500, 1000);
 508
 509                 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 510                         if (client->ops && client->ops->close)
 511                                 client->ops->close(&cdev->lan_info, client,
 512                                                    false);
 513                         i40e_client_release_qvlist(&cdev->lan_info);
 514                         clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 515
 516                         dev_warn(&pf->pdev->dev,
 517                                  "Client %s instance for PF id %d closed\n",
 518                                  client->name, pf->hw.pf_id);
 519                 }
 520                 /* delete the client instance */
 521                 i40e_client_del_instance(pf);
 522                 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n",
 523                          client->name);
 524                 clear_bit(__I40E_SERVICE_SCHED, pf->state);
 525         }
 526         mutex_unlock(&i40e_device_mutex);
 527 }
 528
 529 /**
 530  * i40e_client_prepare - prepare client specific resources
 531  * @client: pointer to the registered client
 532  *
 533  **/
 534 static void i40e_client_prepare(struct i40e_client *client)
 535 {
 536         struct i40e_device *ldev;
 537         struct i40e_pf *pf;
 538
 539         mutex_lock(&i40e_device_mutex);
 540         list_for_each_entry(ldev, &i40e_devices, list) {
 541                 pf = ldev->pf;
 542                 i40e_client_add_instance(pf);
 543                 /* Start the client subtask */
 544                 pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
 545                 i40e_service_event_schedule(pf);
 546         }
 547         mutex_unlock(&i40e_device_mutex);
 548 }
 549
 550 /**
 551  * i40e_client_virtchnl_send - TBD
 552  * @ldev: pointer to L2 context
 553  * @client: Client pointer
 554  * @vf_id: absolute VF identifier
 555  * @msg: message buffer
 556  * @len: length of message buffer
 557  *
 558  * Return 0 on success or < 0 on error
 559  **/
 560 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
 561                                      struct i40e_client *client,
 562                                      u32 vf_id, u8 *msg, u16 len)
 563 {
 564         struct i40e_pf *pf = ldev->pf;
 565         struct i40e_hw *hw = &pf->hw;
 566         i40e_status err;
 567
 568         err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP,
 569                                      0, msg, len, NULL);
 570         if (err)
 571                 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
 572                         err, hw->aq.asq_last_status);
 573
 574         return err;
 575 }
 576
 577 /**
 578  * i40e_client_setup_qvlist
 579  * @ldev: pointer to L2 context.
 580  * @client: Client pointer.
 581  * @qv_info: queue and vector list
 582  *
 583  * Return 0 on success or < 0 on error
 584  **/
 585 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
 586                                     struct i40e_client *client,
 587                                     struct i40e_qvlist_info *qvlist_info)
 588 {
 589         struct i40e_pf *pf = ldev->pf;
 590         struct i40e_hw *hw = &pf->hw;
 591         struct i40e_qv_info *qv_info;
 592         u32 v_idx, i, reg_idx, reg;
 593         u32 size;
 594
 595         size = sizeof(struct i40e_qvlist_info) +
 596                (sizeof(struct i40e_qv_info) * (qvlist_info->num_vectors - 1));
 597         ldev->qvlist_info = kzalloc(size, GFP_KERNEL);
 598         if (!ldev->qvlist_info)
 599                 return -ENOMEM;
 600         ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
 601
 602         for (i = 0; i < qvlist_info->num_vectors; i++) {
 603                 qv_info = &qvlist_info->qv_info[i];
 604                 if (!qv_info)
 605                         continue;
 606                 v_idx = qv_info->v_idx;
 607
 608                 /* Validate vector id belongs to this client */
 609                 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
 610                     (v_idx < pf->iwarp_base_vector))
 611                         goto err;
 612
 613                 ldev->qvlist_info->qv_info[i] = *qv_info;
 614                 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
 615
 616                 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
 617                         /* Special case - No CEQ mapped on this vector */
 618                         wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
 619                 } else {
 620                         reg = (qv_info->ceq_idx &
 621                                I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
 622                                (I40E_QUEUE_TYPE_PE_CEQ <<
 623                                I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
 624                         wr32(hw, reg_idx, reg);
 625
 626                         reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
 627                                (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
 628                                (qv_info->itr_idx <<
 629                                 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
 630                                (I40E_QUEUE_END_OF_LIST <<
 631                                 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
 632                         wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
 633                 }
 634                 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
 635                         reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
 636                                (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
 637                                (qv_info->itr_idx <<
 638                                 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
 639
 640                         wr32(hw, I40E_PFINT_AEQCTL, reg);
 641                 }
 642         }
 643         /* Mitigate sync problems with iwarp VF driver */
 644         i40e_flush(hw);
 645         return 0;
 646 err:
 647         kfree(ldev->qvlist_info);
 648         ldev->qvlist_info = NULL;
 649         return -EINVAL;
 650 }
 651
 652 /**
 653  * i40e_client_request_reset
 654  * @ldev: pointer to L2 context.
 655  * @client: Client pointer.
 656  * @level: reset level
 657  **/
 658 static void i40e_client_request_reset(struct i40e_info *ldev,
 659                                       struct i40e_client *client,
 660                                       u32 reset_level)
 661 {
 662         struct i40e_pf *pf = ldev->pf;
 663
 664         switch (reset_level) {
 665         case I40E_CLIENT_RESET_LEVEL_PF:
 666                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 667                 break;
 668         case I40E_CLIENT_RESET_LEVEL_CORE:
 669                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 670                 break;
 671         default:
 672                 dev_warn(&pf->pdev->dev,
 673                          "Client for PF id %d requested an unsupported reset: %d.\n",
 674                          pf->hw.pf_id, reset_level);
 675                 break;
 676         }
 677
 678         i40e_service_event_schedule(pf);
 679 }
 680
 681 /**
 682  * i40e_client_update_vsi_ctxt
 683  * @ldev: pointer to L2 context.
 684  * @client: Client pointer.
 685  * @is_vf: if this for the VF
 686  * @vf_id: if is_vf true this carries the vf_id
 687  * @flag: Any device level setting that needs to be done for PE
 688  * @valid_flag: Bits in this match up and enable changing of flag bits
 689  *
 690  * Return 0 on success or < 0 on error
 691  **/
 692 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
 693                                        struct i40e_client *client,
 694                                        bool is_vf, u32 vf_id,
 695                                        u32 flag, u32 valid_flag)
 696 {
 697         struct i40e_pf *pf = ldev->pf;
 698         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 699         struct i40e_vsi_context ctxt;
 700         bool update = true;
 701         i40e_status err;
 702
 703         /* TODO: for now do not allow setting VF's VSI setting */
 704         if (is_vf)
 705                 return -EINVAL;
 706
 707         ctxt.seid = pf->main_vsi_seid;
 708         ctxt.pf_num = pf->hw.pf_id;
 709         err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
 710         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
 711         if (err) {
 712                 dev_info(&pf->pdev->dev,
 713                          "couldn't get PF vsi config, err %s aq_err %s\n",
 714                          i40e_stat_str(&pf->hw, err),
 715                          i40e_aq_str(&pf->hw,
 716                                      pf->hw.aq.asq_last_status));
 717                 return -ENOENT;
 718         }
 719
 720         if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE) &&
 721             (flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE)) {
 722                 ctxt.info.valid_sections =
 723                         cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
 724                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
 725         } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE) &&
 726                   !(flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE)) {
 727                 ctxt.info.valid_sections =
 728                         cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
 729                 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
 730         } else {
 731                 update = false;
 732                 dev_warn(&pf->pdev->dev,
 733                          "Client for PF id %d request an unsupported Config: %x.\n",
 734                          pf->hw.pf_id, flag);
 735         }
 736
 737         if (update) {
 738                 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
 739                 if (err) {
 740                         dev_info(&pf->pdev->dev,
 741                                  "update VSI ctxt for PE failed, err %s aq_err %s\n",
 742                                  i40e_stat_str(&pf->hw, err),
 743                                  i40e_aq_str(&pf->hw,
 744                                              pf->hw.aq.asq_last_status));
 745                 }
 746         }
 747         return err;
 748 }
 749
 750 /**
 751  * i40e_register_client - Register a i40e client driver with the L2 driver
 752  * @client: pointer to the i40e_client struct
 753  *
 754  * Returns 0 on success or non-0 on error
 755  **/
 756 int i40e_register_client(struct i40e_client *client)
 757 {
 758         int ret = 0;
 759
 760         if (!client) {
 761                 ret = -EIO;
 762                 goto out;
 763         }
 764
 765         if (strlen(client->name) == 0) {
 766                 pr_info("i40e: Failed to register client with no name\n");
 767                 ret = -EIO;
 768                 goto out;
 769         }
 770
 771         if (registered_client) {
 772                 pr_info("i40e: Client %s has already been registered!\n",
 773                         client->name);
 774                 ret = -EEXIST;
 775                 goto out;
 776         }
 777
 778         if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) ||
 779             (client->version.minor != I40E_CLIENT_VERSION_MINOR)) {
 780                 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n",
 781                         client->name);
 782                 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n",
 783                         client->version.major, client->version.minor,
 784                         client->version.build,
 785                         i40e_client_interface_version_str);
 786                 ret = -EIO;
 787                 goto out;
 788         }
 789
 790         registered_client = client;
 791
 792         i40e_client_prepare(client);
 793
 794         pr_info("i40e: Registered client %s\n", client->name);
 795 out:
 796         return ret;
 797 }
 798 EXPORT_SYMBOL(i40e_register_client);
 799
 800 /**
 801  * i40e_unregister_client - Unregister a i40e client driver with the L2 driver
 802  * @client: pointer to the i40e_client struct
 803  *
 804  * Returns 0 on success or non-0 on error
 805  **/
 806 int i40e_unregister_client(struct i40e_client *client)
 807 {
 808         int ret = 0;
 809
 810         if (registered_client != client) {
 811                 pr_info("i40e: Client %s has not been registered\n",
 812                         client->name);
 813                 ret = -ENODEV;
 814                 goto out;
 815         }
 816         registered_client = NULL;
 817         /* When a unregister request comes through we would have to send
 818          * a close for each of the client instances that were opened.
 819          * client_release function is called to handle this.
 820          */
 821         i40e_client_release(client);
 822
 823         pr_info("i40e: Unregistered client %s\n", client->name);
 824 out:
 825         return ret;
 826 }
 827 EXPORT_SYMBOL(i40e_unregister_client);