drivers/infiniband/hw/i40iw/i40iw_main.c

   1 /*******************************************************************************
   2 *
   3 * Copyright (c) 2015-2016 Intel Corporation.  All rights reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenFabrics.org BSD license below:
  10 *
  11 *   Redistribution and use in source and binary forms, with or
  12 *   without modification, are permitted provided that the following
  13 *   conditions are met:
  14 *
  15 *    - Redistributions of source code must retain the above
  16 *       copyright notice, this list of conditions and the following
  17 *       disclaimer.
  18 *
  19 *    - Redistributions in binary form must reproduce the above
  20 *       copyright notice, this list of conditions and the following
  21 *       disclaimer in the documentation and/or other materials
  22 *       provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 *
  33 *******************************************************************************/
  34
  35 #include <linux/module.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/ip.h>
  40 #include <linux/tcp.h>
  41 #include <linux/if_vlan.h>
  42 #include <net/addrconf.h>
  43
  44 #include "i40iw.h"
  45 #include "i40iw_register.h"
  46 #include <net/netevent.h>
  47 #define CLIENT_IW_INTERFACE_VERSION_MAJOR 0
  48 #define CLIENT_IW_INTERFACE_VERSION_MINOR 01
  49 #define CLIENT_IW_INTERFACE_VERSION_BUILD 00
  50
  51 #define DRV_VERSION_MAJOR 0
  52 #define DRV_VERSION_MINOR 5
  53 #define DRV_VERSION_BUILD 123
  54 #define DRV_VERSION     __stringify(DRV_VERSION_MAJOR) "."              \
  55         __stringify(DRV_VERSION_MINOR) "." __stringify(DRV_VERSION_BUILD)
  56
  57 static int push_mode;
  58 module_param(push_mode, int, 0644);
  59 MODULE_PARM_DESC(push_mode, "Low latency mode: 0=disabled (default), 1=enabled)");
  60
  61 static int debug;
  62 module_param(debug, int, 0644);
  63 MODULE_PARM_DESC(debug, "debug flags: 0=disabled (default), 0x7fffffff=all");
  64
  65 static int resource_profile;
  66 module_param(resource_profile, int, 0644);
  67 MODULE_PARM_DESC(resource_profile,
  68                  "Resource Profile: 0=no VF RDMA support (default), 1=Weighted VF, 2=Even Distribution");
  69
  70 static int max_rdma_vfs = 32;
  71 module_param(max_rdma_vfs, int, 0644);
  72 MODULE_PARM_DESC(max_rdma_vfs, "Maximum VF count: 0-32 32=default");
  73 static int mpa_version = 2;
  74 module_param(mpa_version, int, 0644);
  75 MODULE_PARM_DESC(mpa_version, "MPA version to be used in MPA Req/Resp 1 or 2");
  76
  77 MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
  78 MODULE_DESCRIPTION("Intel(R) Ethernet Connection X722 iWARP RDMA Driver");
  79 MODULE_LICENSE("Dual BSD/GPL");
  80 MODULE_VERSION(DRV_VERSION);
  81
  82 static struct i40e_client i40iw_client;
  83 static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw";
  84
  85 static LIST_HEAD(i40iw_handlers);
  86 static spinlock_t i40iw_handler_lock;
  87
  88 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
  89                                                   u32 vf_id, u8 *msg, u16 len);
  90
  91 static struct notifier_block i40iw_inetaddr_notifier = {
  92         .notifier_call = i40iw_inetaddr_event
  93 };
  94
  95 static struct notifier_block i40iw_inetaddr6_notifier = {
  96         .notifier_call = i40iw_inet6addr_event
  97 };
  98
  99 static struct notifier_block i40iw_net_notifier = {
 100         .notifier_call = i40iw_net_event
 101 };
 102
 103 static int i40iw_notifiers_registered;
 104
 105 /**
 106  * i40iw_find_i40e_handler - find a handler given a client info
 107  * @ldev: pointer to a client info
 108  */
 109 static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev)
 110 {
 111         struct i40iw_handler *hdl;
 112         unsigned long flags;
 113
 114         spin_lock_irqsave(&i40iw_handler_lock, flags);
 115         list_for_each_entry(hdl, &i40iw_handlers, list) {
 116                 if (hdl->ldev.netdev == ldev->netdev) {
 117                         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 118                         return hdl;
 119                 }
 120         }
 121         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 122         return NULL;
 123 }
 124
 125 /**
 126  * i40iw_find_netdev - find a handler given a netdev
 127  * @netdev: pointer to net_device
 128  */
 129 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev)
 130 {
 131         struct i40iw_handler *hdl;
 132         unsigned long flags;
 133
 134         spin_lock_irqsave(&i40iw_handler_lock, flags);
 135         list_for_each_entry(hdl, &i40iw_handlers, list) {
 136                 if (hdl->ldev.netdev == netdev) {
 137                         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 138                         return hdl;
 139                 }
 140         }
 141         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 142         return NULL;
 143 }
 144
 145 /**
 146  * i40iw_add_handler - add a handler to the list
 147  * @hdl: handler to be added to the handler list
 148  */
 149 static void i40iw_add_handler(struct i40iw_handler *hdl)
 150 {
 151         unsigned long flags;
 152
 153         spin_lock_irqsave(&i40iw_handler_lock, flags);
 154         list_add(&hdl->list, &i40iw_handlers);
 155         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 156 }
 157
 158 /**
 159  * i40iw_del_handler - delete a handler from the list
 160  * @hdl: handler to be deleted from the handler list
 161  */
 162 static int i40iw_del_handler(struct i40iw_handler *hdl)
 163 {
 164         unsigned long flags;
 165
 166         spin_lock_irqsave(&i40iw_handler_lock, flags);
 167         list_del(&hdl->list);
 168         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 169         return 0;
 170 }
 171
 172 /**
 173  * i40iw_enable_intr - set up device interrupts
 174  * @dev: hardware control device structure
 175  * @msix_id: id of the interrupt to be enabled
 176  */
 177 static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id)
 178 {
 179         u32 val;
 180
 181         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
 182                 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
 183                 (3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
 184         if (dev->is_pf)
 185                 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val);
 186         else
 187                 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val);
 188 }
 189
 190 /**
 191  * i40iw_dpc - tasklet for aeq and ceq 0
 192  * @data: iwarp device
 193  */
 194 static void i40iw_dpc(unsigned long data)
 195 {
 196         struct i40iw_device *iwdev = (struct i40iw_device *)data;
 197
 198         if (iwdev->msix_shared)
 199                 i40iw_process_ceq(iwdev, iwdev->ceqlist);
 200         i40iw_process_aeq(iwdev);
 201         i40iw_enable_intr(&iwdev->sc_dev, iwdev->iw_msixtbl[0].idx);
 202 }
 203
 204 /**
 205  * i40iw_ceq_dpc - dpc handler for CEQ
 206  * @data: data points to CEQ
 207  */
 208 static void i40iw_ceq_dpc(unsigned long data)
 209 {
 210         struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
 211         struct i40iw_device *iwdev = iwceq->iwdev;
 212
 213         i40iw_process_ceq(iwdev, iwceq);
 214         i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx);
 215 }
 216
 217 /**
 218  * i40iw_irq_handler - interrupt handler for aeq and ceq0
 219  * @irq: Interrupt request number
 220  * @data: iwarp device
 221  */
 222 static irqreturn_t i40iw_irq_handler(int irq, void *data)
 223 {
 224         struct i40iw_device *iwdev = (struct i40iw_device *)data;
 225
 226         tasklet_schedule(&iwdev->dpc_tasklet);
 227         return IRQ_HANDLED;
 228 }
 229
 230 /**
 231  * i40iw_destroy_cqp  - destroy control qp
 232  * @iwdev: iwarp device
 233  * @create_done: 1 if cqp create poll was success
 234  *
 235  * Issue destroy cqp request and
 236  * free the resources associated with the cqp
 237  */
 238 static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp)
 239 {
 240         enum i40iw_status_code status = 0;
 241         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 242         struct i40iw_cqp *cqp = &iwdev->cqp;
 243
 244         if (free_hwcqp && dev->cqp_ops->cqp_destroy)
 245                 status = dev->cqp_ops->cqp_destroy(dev->cqp);
 246         if (status)
 247                 i40iw_pr_err("destroy cqp failed");
 248
 249         i40iw_free_dma_mem(dev->hw, &cqp->sq);
 250         kfree(cqp->scratch_array);
 251         iwdev->cqp.scratch_array = NULL;
 252
 253         kfree(cqp->cqp_requests);
 254         cqp->cqp_requests = NULL;
 255 }
 256
 257 /**
 258  * i40iw_disable_irqs - disable device interrupts
 259  * @dev: hardware control device structure
 260  * @msic_vec: msix vector to disable irq
 261  * @dev_id: parameter to pass to free_irq (used during irq setup)
 262  *
 263  * The function is called when destroying aeq/ceq
 264  */
 265 static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
 266                               struct i40iw_msix_vector *msix_vec,
 267                               void *dev_id)
 268 {
 269         if (dev->is_pf)
 270                 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
 271         else
 272                 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0);
 273         free_irq(msix_vec->irq, dev_id);
 274 }
 275
 276 /**
 277  * i40iw_destroy_aeq - destroy aeq
 278  * @iwdev: iwarp device
 279  * @reset: true if called before reset
 280  *
 281  * Issue a destroy aeq request and
 282  * free the resources associated with the aeq
 283  * The function is called during driver unload
 284  */
 285 static void i40iw_destroy_aeq(struct i40iw_device *iwdev, bool reset)
 286 {
 287         enum i40iw_status_code status = I40IW_ERR_NOT_READY;
 288         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 289         struct i40iw_aeq *aeq = &iwdev->aeq;
 290
 291         if (!iwdev->msix_shared)
 292                 i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev);
 293         if (reset)
 294                 goto exit;
 295
 296         if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1))
 297                 status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq);
 298         if (status)
 299                 i40iw_pr_err("destroy aeq failed %d\n", status);
 300
 301 exit:
 302         i40iw_free_dma_mem(dev->hw, &aeq->mem);
 303 }
 304
 305 /**
 306  * i40iw_destroy_ceq - destroy ceq
 307  * @iwdev: iwarp device
 308  * @iwceq: ceq to be destroyed
 309  * @reset: true if called before reset
 310  *
 311  * Issue a destroy ceq request and
 312  * free the resources associated with the ceq
 313  */
 314 static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
 315                               struct i40iw_ceq *iwceq,
 316                               bool reset)
 317 {
 318         enum i40iw_status_code status;
 319         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 320
 321         if (reset)
 322                 goto exit;
 323
 324         status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1);
 325         if (status) {
 326                 i40iw_pr_err("ceq destroy command failed %d\n", status);
 327                 goto exit;
 328         }
 329
 330         status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq);
 331         if (status)
 332                 i40iw_pr_err("ceq destroy completion failed %d\n", status);
 333 exit:
 334         i40iw_free_dma_mem(dev->hw, &iwceq->mem);
 335 }
 336
 337 /**
 338  * i40iw_dele_ceqs - destroy all ceq's
 339  * @iwdev: iwarp device
 340  * @reset: true if called before reset
 341  *
 342  * Go through all of the device ceq's and for each ceq
 343  * disable the ceq interrupt and destroy the ceq
 344  */
 345 static void i40iw_dele_ceqs(struct i40iw_device *iwdev, bool reset)
 346 {
 347         u32 i = 0;
 348         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 349         struct i40iw_ceq *iwceq = iwdev->ceqlist;
 350         struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
 351
 352         if (iwdev->msix_shared) {
 353                 i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
 354                 i40iw_destroy_ceq(iwdev, iwceq, reset);
 355                 iwceq++;
 356                 i++;
 357         }
 358
 359         for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) {
 360                 i40iw_disable_irq(dev, msix_vec, (void *)iwceq);
 361                 i40iw_destroy_ceq(iwdev, iwceq, reset);
 362         }
 363 }
 364
 365 /**
 366  * i40iw_destroy_ccq - destroy control cq
 367  * @iwdev: iwarp device
 368  * @reset: true if called before reset
 369  *
 370  * Issue destroy ccq request and
 371  * free the resources associated with the ccq
 372  */
 373 static void i40iw_destroy_ccq(struct i40iw_device *iwdev, bool reset)
 374 {
 375         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 376         struct i40iw_ccq *ccq = &iwdev->ccq;
 377         enum i40iw_status_code status = 0;
 378
 379         if (!reset)
 380                 status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true);
 381         if (status)
 382                 i40iw_pr_err("ccq destroy failed %d\n", status);
 383         i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
 384 }
 385
 386 /* types of hmc objects */
 387 static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = {
 388         I40IW_HMC_IW_QP,
 389         I40IW_HMC_IW_CQ,
 390         I40IW_HMC_IW_HTE,
 391         I40IW_HMC_IW_ARP,
 392         I40IW_HMC_IW_APBVT_ENTRY,
 393         I40IW_HMC_IW_MR,
 394         I40IW_HMC_IW_XF,
 395         I40IW_HMC_IW_XFFL,
 396         I40IW_HMC_IW_Q1,
 397         I40IW_HMC_IW_Q1FL,
 398         I40IW_HMC_IW_TIMER,
 399 };
 400
 401 /**
 402  * i40iw_close_hmc_objects_type - delete hmc objects of a given type
 403  * @iwdev: iwarp device
 404  * @obj_type: the hmc object type to be deleted
 405  * @is_pf: true if the function is PF otherwise false
 406  * @reset: true if called before reset
 407  */
 408 static void i40iw_close_hmc_objects_type(struct i40iw_sc_dev *dev,
 409                                          enum i40iw_hmc_rsrc_type obj_type,
 410                                          struct i40iw_hmc_info *hmc_info,
 411                                          bool is_pf,
 412                                          bool reset)
 413 {
 414         struct i40iw_hmc_del_obj_info info;
 415
 416         memset(&info, 0, sizeof(info));
 417         info.hmc_info = hmc_info;
 418         info.rsrc_type = obj_type;
 419         info.count = hmc_info->hmc_obj[obj_type].cnt;
 420         info.is_pf = is_pf;
 421         if (dev->hmc_ops->del_hmc_object(dev, &info, reset))
 422                 i40iw_pr_err("del obj of type %d failed\n", obj_type);
 423 }
 424
 425 /**
 426  * i40iw_del_hmc_objects - remove all device hmc objects
 427  * @dev: iwarp device
 428  * @hmc_info: hmc_info to free
 429  * @is_pf: true if hmc_info belongs to PF, not vf nor allocated
 430  *         by PF on behalf of VF
 431  * @reset: true if called before reset
 432  */
 433 static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev,
 434                                   struct i40iw_hmc_info *hmc_info,
 435                                   bool is_pf,
 436                                   bool reset)
 437 {
 438         unsigned int i;
 439
 440         for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++)
 441                 i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], hmc_info, is_pf, reset);
 442 }
 443
 444 /**
 445  * i40iw_ceq_handler - interrupt handler for ceq
 446  * @data: ceq pointer
 447  */
 448 static irqreturn_t i40iw_ceq_handler(int irq, void *data)
 449 {
 450         struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
 451
 452         if (iwceq->irq != irq)
 453                 i40iw_pr_err("expected irq = %d received irq = %d\n", iwceq->irq, irq);
 454         tasklet_schedule(&iwceq->dpc_tasklet);
 455         return IRQ_HANDLED;
 456 }
 457
 458 /**
 459  * i40iw_create_hmc_obj_type - create hmc object of a given type
 460  * @dev: hardware control device structure
 461  * @info: information for the hmc object to create
 462  */
 463 static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev,
 464                                                         struct i40iw_hmc_create_obj_info *info)
 465 {
 466         return dev->hmc_ops->create_hmc_object(dev, info);
 467 }
 468
 469 /**
 470  * i40iw_create_hmc_objs - create all hmc objects for the device
 471  * @iwdev: iwarp device
 472  * @is_pf: true if the function is PF otherwise false
 473  *
 474  * Create the device hmc objects and allocate hmc pages
 475  * Return 0 if successful, otherwise clean up and return error
 476  */
 477 static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev,
 478                                                     bool is_pf)
 479 {
 480         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 481         struct i40iw_hmc_create_obj_info info;
 482         enum i40iw_status_code status;
 483         int i;
 484
 485         memset(&info, 0, sizeof(info));
 486         info.hmc_info = dev->hmc_info;
 487         info.is_pf = is_pf;
 488         info.entry_type = iwdev->sd_type;
 489         for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) {
 490                 info.rsrc_type = iw_hmc_obj_types[i];
 491                 info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt;
 492                 status = i40iw_create_hmc_obj_type(dev, &info);
 493                 if (status) {
 494                         i40iw_pr_err("create obj type %d status = %d\n",
 495                                      iw_hmc_obj_types[i], status);
 496                         break;
 497                 }
 498         }
 499         if (!status)
 500                 return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
 501                                                                       dev->hmc_fn_id,
 502                                                                       true, true));
 503
 504         while (i) {
 505                 i--;
 506                 /* destroy the hmc objects of a given type */
 507                 i40iw_close_hmc_objects_type(dev,
 508                                              iw_hmc_obj_types[i],
 509                                              dev->hmc_info,
 510                                              is_pf,
 511                                              false);
 512         }
 513         return status;
 514 }
 515
 516 /**
 517  * i40iw_obj_aligned_mem - get aligned memory from device allocated memory
 518  * @iwdev: iwarp device
 519  * @memptr: points to the memory addresses
 520  * @size: size of memory needed
 521  * @mask: mask for the aligned memory
 522  *
 523  * Get aligned memory of the requested size and
 524  * update the memptr to point to the new aligned memory
 525  * Return 0 if successful, otherwise return no memory error
 526  */
 527 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
 528                                              struct i40iw_dma_mem *memptr,
 529                                              u32 size,
 530                                              u32 mask)
 531 {
 532         unsigned long va, newva;
 533         unsigned long extra;
 534
 535         va = (unsigned long)iwdev->obj_next.va;
 536         newva = va;
 537         if (mask)
 538                 newva = ALIGN(va, (mask + 1));
 539         extra = newva - va;
 540         memptr->va = (u8 *)va + extra;
 541         memptr->pa = iwdev->obj_next.pa + extra;
 542         memptr->size = size;
 543         if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
 544                 return I40IW_ERR_NO_MEMORY;
 545
 546         iwdev->obj_next.va = memptr->va + size;
 547         iwdev->obj_next.pa = memptr->pa + size;
 548         return 0;
 549 }
 550
 551 /**
 552  * i40iw_create_cqp - create control qp
 553  * @iwdev: iwarp device
 554  *
 555  * Return 0, if the cqp and all the resources associated with it
 556  * are successfully created, otherwise return error
 557  */
 558 static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
 559 {
 560         enum i40iw_status_code status;
 561         u32 sqsize = I40IW_CQP_SW_SQSIZE_2048;
 562         struct i40iw_dma_mem mem;
 563         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 564         struct i40iw_cqp_init_info cqp_init_info;
 565         struct i40iw_cqp *cqp = &iwdev->cqp;
 566         u16 maj_err, min_err;
 567         int i;
 568
 569         cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL);
 570         if (!cqp->cqp_requests)
 571                 return I40IW_ERR_NO_MEMORY;
 572         cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL);
 573         if (!cqp->scratch_array) {
 574                 kfree(cqp->cqp_requests);
 575                 return I40IW_ERR_NO_MEMORY;
 576         }
 577         dev->cqp = &cqp->sc_cqp;
 578         dev->cqp->dev = dev;
 579         memset(&cqp_init_info, 0, sizeof(cqp_init_info));
 580         status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq,
 581                                         (sizeof(struct i40iw_cqp_sq_wqe) * sqsize),
 582                                         I40IW_CQP_ALIGNMENT);
 583         if (status)
 584                 goto exit;
 585         status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
 586                                        I40IW_HOST_CTX_ALIGNMENT_MASK);
 587         if (status)
 588                 goto exit;
 589         dev->cqp->host_ctx_pa = mem.pa;
 590         dev->cqp->host_ctx = mem.va;
 591         /* populate the cqp init info */
 592         cqp_init_info.dev = dev;
 593         cqp_init_info.sq_size = sqsize;
 594         cqp_init_info.sq = cqp->sq.va;
 595         cqp_init_info.sq_pa = cqp->sq.pa;
 596         cqp_init_info.host_ctx_pa = mem.pa;
 597         cqp_init_info.host_ctx = mem.va;
 598         cqp_init_info.hmc_profile = iwdev->resource_profile;
 599         cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs;
 600         cqp_init_info.scratch_array = cqp->scratch_array;
 601         status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info);
 602         if (status) {
 603                 i40iw_pr_err("cqp init status %d\n", status);
 604                 goto exit;
 605         }
 606         status = dev->cqp_ops->cqp_create(dev->cqp, true, &maj_err, &min_err);
 607         if (status) {
 608                 i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
 609                              status, maj_err, min_err);
 610                 goto exit;
 611         }
 612         spin_lock_init(&cqp->req_lock);
 613         INIT_LIST_HEAD(&cqp->cqp_avail_reqs);
 614         INIT_LIST_HEAD(&cqp->cqp_pending_reqs);
 615         /* init the waitq of the cqp_requests and add them to the list */
 616         for (i = 0; i < I40IW_CQP_SW_SQSIZE_2048; i++) {
 617                 init_waitqueue_head(&cqp->cqp_requests[i].waitq);
 618                 list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs);
 619         }
 620         return 0;
 621 exit:
 622         /* clean up the created resources */
 623         i40iw_destroy_cqp(iwdev, false);
 624         return status;
 625 }
 626
 627 /**
 628  * i40iw_create_ccq - create control cq
 629  * @iwdev: iwarp device
 630  *
 631  * Return 0, if the ccq and the resources associated with it
 632  * are successfully created, otherwise return error
 633  */
 634 static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
 635 {
 636         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 637         struct i40iw_dma_mem mem;
 638         enum i40iw_status_code status;
 639         struct i40iw_ccq_init_info info;
 640         struct i40iw_ccq *ccq = &iwdev->ccq;
 641
 642         memset(&info, 0, sizeof(info));
 643         dev->ccq = &ccq->sc_cq;
 644         dev->ccq->dev = dev;
 645         info.dev = dev;
 646         ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area);
 647         ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE;
 648         status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq,
 649                                         ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT);
 650         if (status)
 651                 goto exit;
 652         status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
 653                                        I40IW_SHADOWAREA_MASK);
 654         if (status)
 655                 goto exit;
 656         ccq->sc_cq.back_cq = (void *)ccq;
 657         /* populate the ccq init info */
 658         info.cq_base = ccq->mem_cq.va;
 659         info.cq_pa = ccq->mem_cq.pa;
 660         info.num_elem = IW_CCQ_SIZE;
 661         info.shadow_area = mem.va;
 662         info.shadow_area_pa = mem.pa;
 663         info.ceqe_mask = false;
 664         info.ceq_id_valid = true;
 665         info.shadow_read_threshold = 16;
 666         status = dev->ccq_ops->ccq_init(dev->ccq, &info);
 667         if (!status)
 668                 status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
 669 exit:
 670         if (status)
 671                 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
 672         return status;
 673 }
 674
 675 /**
 676  * i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq
 677  * @iwdev: iwarp device
 678  * @msix_vec: interrupt vector information
 679  * @iwceq: ceq associated with the vector
 680  * @ceq_id: the id number of the iwceq
 681  *
 682  * Allocate interrupt resources and enable irq handling
 683  * Return 0 if successful, otherwise return error
 684  */
 685 static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
 686                                                          struct i40iw_ceq *iwceq,
 687                                                          u32 ceq_id,
 688                                                          struct i40iw_msix_vector *msix_vec)
 689 {
 690         enum i40iw_status_code status;
 691
 692         if (iwdev->msix_shared && !ceq_id) {
 693                 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
 694                 status = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "AEQCEQ", iwdev);
 695         } else {
 696                 tasklet_init(&iwceq->dpc_tasklet, i40iw_ceq_dpc, (unsigned long)iwceq);
 697                 status = request_irq(msix_vec->irq, i40iw_ceq_handler, 0, "CEQ", iwceq);
 698         }
 699
 700         if (status) {
 701                 i40iw_pr_err("ceq irq config fail\n");
 702                 return I40IW_ERR_CONFIG;
 703         }
 704         msix_vec->ceq_id = ceq_id;
 705         msix_vec->cpu_affinity = 0;
 706
 707         return 0;
 708 }
 709
 710 /**
 711  * i40iw_create_ceq - create completion event queue
 712  * @iwdev: iwarp device
 713  * @iwceq: pointer to the ceq resources to be created
 714  * @ceq_id: the id number of the iwceq
 715  *
 716  * Return 0, if the ceq and the resources associated with it
 717  * are successfully created, otherwise return error
 718  */
 719 static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev,
 720                                                struct i40iw_ceq *iwceq,
 721                                                u32 ceq_id)
 722 {
 723         enum i40iw_status_code status;
 724         struct i40iw_ceq_init_info info;
 725         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 726         u64 scratch;
 727
 728         memset(&info, 0, sizeof(info));
 729         info.ceq_id = ceq_id;
 730         iwceq->iwdev = iwdev;
 731         iwceq->mem.size = sizeof(struct i40iw_ceqe) *
 732                 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 733         status = i40iw_allocate_dma_mem(dev->hw, &iwceq->mem, iwceq->mem.size,
 734                                         I40IW_CEQ_ALIGNMENT);
 735         if (status)
 736                 goto exit;
 737         info.ceq_id = ceq_id;
 738         info.ceqe_base = iwceq->mem.va;
 739         info.ceqe_pa = iwceq->mem.pa;
 740
 741         info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 742         iwceq->sc_ceq.ceq_id = ceq_id;
 743         info.dev = dev;
 744         scratch = (uintptr_t)&iwdev->cqp.sc_cqp;
 745         status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info);
 746         if (!status)
 747                 status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch);
 748
 749 exit:
 750         if (status)
 751                 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
 752         return status;
 753 }
 754
 755 void i40iw_request_reset(struct i40iw_device *iwdev)
 756 {
 757         struct i40e_info *ldev = iwdev->ldev;
 758
 759         ldev->ops->request_reset(ldev, iwdev->client, 1);
 760 }
 761
 762 /**
 763  * i40iw_setup_ceqs - manage the device ceq's and their interrupt resources
 764  * @iwdev: iwarp device
 765  * @ldev: i40e lan device
 766  *
 767  * Allocate a list for all device completion event queues
 768  * Create the ceq's and configure their msix interrupt vectors
 769  * Return 0, if at least one ceq is successfully set up, otherwise return error
 770  */
 771 static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev,
 772                                                struct i40e_info *ldev)
 773 {
 774         u32 i;
 775         u32 ceq_id;
 776         struct i40iw_ceq *iwceq;
 777         struct i40iw_msix_vector *msix_vec;
 778         enum i40iw_status_code status = 0;
 779         u32 num_ceqs;
 780
 781         if (ldev && ldev->ops && ldev->ops->setup_qvlist) {
 782                 status = ldev->ops->setup_qvlist(ldev, &i40iw_client,
 783                                                  iwdev->iw_qvlist);
 784                 if (status)
 785                         goto exit;
 786         } else {
 787                 status = I40IW_ERR_BAD_PTR;
 788                 goto exit;
 789         }
 790
 791         num_ceqs = min(iwdev->msix_count, iwdev->sc_dev.hmc_fpm_misc.max_ceqs);
 792         iwdev->ceqlist = kcalloc(num_ceqs, sizeof(*iwdev->ceqlist), GFP_KERNEL);
 793         if (!iwdev->ceqlist) {
 794                 status = I40IW_ERR_NO_MEMORY;
 795                 goto exit;
 796         }
 797         i = (iwdev->msix_shared) ? 0 : 1;
 798         for (ceq_id = 0; i < num_ceqs; i++, ceq_id++) {
 799                 iwceq = &iwdev->ceqlist[ceq_id];
 800                 status = i40iw_create_ceq(iwdev, iwceq, ceq_id);
 801                 if (status) {
 802                         i40iw_pr_err("create ceq status = %d\n", status);
 803                         break;
 804                 }
 805
 806                 msix_vec = &iwdev->iw_msixtbl[i];
 807                 iwceq->irq = msix_vec->irq;
 808                 iwceq->msix_idx = msix_vec->idx;
 809                 status = i40iw_configure_ceq_vector(iwdev, iwceq, ceq_id, msix_vec);
 810                 if (status) {
 811                         i40iw_destroy_ceq(iwdev, iwceq, false);
 812                         break;
 813                 }
 814                 i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
 815                 iwdev->ceqs_count++;
 816         }
 817
 818 exit:
 819         if (status) {
 820                 if (!iwdev->ceqs_count) {
 821                         kfree(iwdev->ceqlist);
 822                         iwdev->ceqlist = NULL;
 823                 } else {
 824                         status = 0;
 825                 }
 826         }
 827         return status;
 828 }
 829
 830 /**
 831  * i40iw_configure_aeq_vector - set up the msix vector for aeq
 832  * @iwdev: iwarp device
 833  *
 834  * Allocate interrupt resources and enable irq handling
 835  * Return 0 if successful, otherwise return error
 836  */
 837 static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
 838 {
 839         struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
 840         u32 ret = 0;
 841
 842         if (!iwdev->msix_shared) {
 843                 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
 844                 ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev);
 845         }
 846         if (ret) {
 847                 i40iw_pr_err("aeq irq config fail\n");
 848                 return I40IW_ERR_CONFIG;
 849         }
 850
 851         return 0;
 852 }
 853
 854 /**
 855  * i40iw_create_aeq - create async event queue
 856  * @iwdev: iwarp device
 857  *
 858  * Return 0, if the aeq and the resources associated with it
 859  * are successfully created, otherwise return error
 860  */
 861 static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
 862 {
 863         enum i40iw_status_code status;
 864         struct i40iw_aeq_init_info info;
 865         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 866         struct i40iw_aeq *aeq = &iwdev->aeq;
 867         u64 scratch = 0;
 868         u32 aeq_size;
 869
 870         aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt +
 871                 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 872         memset(&info, 0, sizeof(info));
 873         aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size;
 874         status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size,
 875                                         I40IW_AEQ_ALIGNMENT);
 876         if (status)
 877                 goto exit;
 878
 879         info.aeqe_base = aeq->mem.va;
 880         info.aeq_elem_pa = aeq->mem.pa;
 881         info.elem_cnt = aeq_size;
 882         info.dev = dev;
 883         status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
 884         if (status)
 885                 goto exit;
 886         status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
 887         if (!status)
 888                 status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
 889 exit:
 890         if (status)
 891                 i40iw_free_dma_mem(dev->hw, &aeq->mem);
 892         return status;
 893 }
 894
 895 /**
 896  * i40iw_setup_aeq - set up the device aeq
 897  * @iwdev: iwarp device
 898  *
 899  * Create the aeq and configure its msix interrupt vector
 900  * Return 0 if successful, otherwise return error
 901  */
 902 static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
 903 {
 904         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 905         enum i40iw_status_code status;
 906
 907         status = i40iw_create_aeq(iwdev);
 908         if (status)
 909                 return status;
 910
 911         status = i40iw_configure_aeq_vector(iwdev);
 912         if (status) {
 913                 i40iw_destroy_aeq(iwdev, false);
 914                 return status;
 915         }
 916
 917         if (!iwdev->msix_shared)
 918                 i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
 919         return 0;
 920 }
 921
 922 /**
 923  * i40iw_initialize_ilq - create iwarp local queue for cm
 924  * @iwdev: iwarp device
 925  *
 926  * Return 0 if successful, otherwise return error
 927  */
 928 static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
 929 {
 930         struct i40iw_puda_rsrc_info info;
 931         enum i40iw_status_code status;
 932
 933         info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
 934         info.cq_id = 1;
 935         info.qp_id = 0;
 936         info.count = 1;
 937         info.pd_id = 1;
 938         info.sq_size = 8192;
 939         info.rq_size = 8192;
 940         info.buf_size = 1024;
 941         info.tx_buf_cnt = 16384;
 942         info.mss = iwdev->mss;
 943         info.receive = i40iw_receive_ilq;
 944         info.xmit_complete = i40iw_free_sqbuf;
 945         status = i40iw_puda_create_rsrc(&iwdev->sc_dev, &info);
 946         if (status)
 947                 i40iw_pr_err("ilq create fail\n");
 948         return status;
 949 }
 950
 951 /**
 952  * i40iw_initialize_ieq - create iwarp exception queue
 953  * @iwdev: iwarp device
 954  *
 955  * Return 0 if successful, otherwise return error
 956  */
 957 static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
 958 {
 959         struct i40iw_puda_rsrc_info info;
 960         enum i40iw_status_code status;
 961
 962         info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
 963         info.cq_id = 2;
 964         info.qp_id = iwdev->sc_dev.exception_lan_queue;
 965         info.count = 1;
 966         info.pd_id = 2;
 967         info.sq_size = 8192;
 968         info.rq_size = 8192;
 969         info.buf_size = 2048;
 970         info.mss = iwdev->mss;
 971         info.tx_buf_cnt = 16384;
 972         status = i40iw_puda_create_rsrc(&iwdev->sc_dev, &info);
 973         if (status)
 974                 i40iw_pr_err("ieq create fail\n");
 975         return status;
 976 }
 977
 978 /**
 979  * i40iw_hmc_setup - create hmc objects for the device
 980  * @iwdev: iwarp device
 981  *
 982  * Set up the device private memory space for the number and size of
 983  * the hmc objects and create the objects
 984  * Return 0 if successful, otherwise return error
 985  */
 986 static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
 987 {
 988         enum i40iw_status_code status;
 989
 990         iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
 991         status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
 992         if (status)
 993                 goto exit;
 994         status = i40iw_create_hmc_objs(iwdev, true);
 995         if (status)
 996                 goto exit;
 997         iwdev->init_state = HMC_OBJS_CREATED;
 998 exit:
 999         return status;
1000 }
1001
1002 /**
1003  * i40iw_del_init_mem - deallocate memory resources
1004  * @iwdev: iwarp device
1005  */
1006 static void i40iw_del_init_mem(struct i40iw_device *iwdev)
1007 {
1008         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1009
1010         i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem);
1011         kfree(dev->hmc_info->sd_table.sd_entry);
1012         dev->hmc_info->sd_table.sd_entry = NULL;
1013         kfree(iwdev->mem_resources);
1014         iwdev->mem_resources = NULL;
1015         kfree(iwdev->ceqlist);
1016         iwdev->ceqlist = NULL;
1017         kfree(iwdev->iw_msixtbl);
1018         iwdev->iw_msixtbl = NULL;
1019         kfree(iwdev->hmc_info_mem);
1020         iwdev->hmc_info_mem = NULL;
1021 }
1022
1023 /**
1024  * i40iw_del_macip_entry - remove a mac ip address entry from the hw table
1025  * @iwdev: iwarp device
1026  * @idx: the index of the mac ip address to delete
1027  */
1028 static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
1029 {
1030         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1031         struct i40iw_cqp_request *cqp_request;
1032         struct cqp_commands_info *cqp_info;
1033         enum i40iw_status_code status = 0;
1034
1035         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1036         if (!cqp_request) {
1037                 i40iw_pr_err("cqp_request memory failed\n");
1038                 return;
1039         }
1040         cqp_info = &cqp_request->info;
1041         cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY;
1042         cqp_info->post_sq = 1;
1043         cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1044         cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1045         cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx;
1046         cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0;
1047         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1048         if (status)
1049                 i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
1050 }
1051
1052 /**
1053  * i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table
1054  * @iwdev: iwarp device
1055  * @mac_addr: pointer to mac address
1056  * @idx: the index of the mac ip address to add
1057  */
1058 static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
1059                                                          u8 *mac_addr,
1060                                                          u8 idx)
1061 {
1062         struct i40iw_local_mac_ipaddr_entry_info *info;
1063         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1064         struct i40iw_cqp_request *cqp_request;
1065         struct cqp_commands_info *cqp_info;
1066         enum i40iw_status_code status = 0;
1067
1068         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1069         if (!cqp_request) {
1070                 i40iw_pr_err("cqp_request memory failed\n");
1071                 return I40IW_ERR_NO_MEMORY;
1072         }
1073
1074         cqp_info = &cqp_request->info;
1075
1076         cqp_info->post_sq = 1;
1077         info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info;
1078         ether_addr_copy(info->mac_addr, mac_addr);
1079         info->entry_idx = idx;
1080         cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1081         cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY;
1082         cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1083         cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1084         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1085         if (status)
1086                 i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
1087         return status;
1088 }
1089
1090 /**
1091  * i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry
1092  * @iwdev: iwarp device
1093  * @mac_ip_tbl_idx: the index of the new mac ip address
1094  *
1095  * Allocate a mac ip address entry and update the mac_ip_tbl_idx
1096  * to hold the index of the newly created mac ip address
1097  * Return 0 if successful, otherwise return error
1098  */
1099 static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
1100                                                                  u16 *mac_ip_tbl_idx)
1101 {
1102         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1103         struct i40iw_cqp_request *cqp_request;
1104         struct cqp_commands_info *cqp_info;
1105         enum i40iw_status_code status = 0;
1106
1107         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1108         if (!cqp_request) {
1109                 i40iw_pr_err("cqp_request memory failed\n");
1110                 return I40IW_ERR_NO_MEMORY;
1111         }
1112
1113         /* increment refcount, because we need the cqp request ret value */
1114         atomic_inc(&cqp_request->refcount);
1115
1116         cqp_info = &cqp_request->info;
1117         cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY;
1118         cqp_info->post_sq = 1;
1119         cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1120         cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1121         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1122         if (!status)
1123                 *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
1124         else
1125                 i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail");
1126         /* decrement refcount and free the cqp request, if no longer used */
1127         i40iw_put_cqp_request(iwcqp, cqp_request);
1128         return status;
1129 }
1130
1131 /**
1132  * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
1133  * @iwdev: iwarp device
1134  * @macaddr: pointer to mac address
1135  *
1136  * Allocate a mac ip address entry and add it to the hw table
1137  * Return 0 if successful, otherwise return error
1138  */
1139 static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
1140                                                          u8 *macaddr)
1141 {
1142         enum i40iw_status_code status;
1143
1144         status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
1145         if (!status) {
1146                 status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
1147                                                     (u8)iwdev->mac_ip_table_idx);
1148                 if (status)
1149                         i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1150         }
1151         return status;
1152 }
1153
1154 /**
1155  * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
1156  * @iwdev: iwarp device
1157  */
1158 static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
1159 {
1160         struct net_device *ip_dev;
1161         struct inet6_dev *idev;
1162         struct inet6_ifaddr *ifp;
1163         u32 local_ipaddr6[4];
1164
1165         rcu_read_lock();
1166         for_each_netdev_rcu(&init_net, ip_dev) {
1167                 if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) &&
1168                       (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
1169                      (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
1170                         idev = __in6_dev_get(ip_dev);
1171                         if (!idev) {
1172                                 i40iw_pr_err("ipv6 inet device not found\n");
1173                                 break;
1174                         }
1175                         list_for_each_entry(ifp, &idev->addr_list, if_list) {
1176                                 i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr,
1177                                               rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr);
1178                                 i40iw_copy_ip_ntohl(local_ipaddr6,
1179                                                     ifp->addr.in6_u.u6_addr32);
1180                                 i40iw_manage_arp_cache(iwdev,
1181                                                        ip_dev->dev_addr,
1182                                                        local_ipaddr6,
1183                                                        false,
1184                                                        I40IW_ARP_ADD);
1185                         }
1186                 }
1187         }
1188         rcu_read_unlock();
1189 }
1190
1191 /**
1192  * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
1193  * @iwdev: iwarp device
1194  */
1195 static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
1196 {
1197         struct net_device *dev;
1198         struct in_device *idev;
1199         bool got_lock = true;
1200         u32 ip_addr;
1201
1202         if (!rtnl_trylock())
1203                 got_lock = false;
1204
1205         for_each_netdev(&init_net, dev) {
1206                 if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) &&
1207                       (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
1208                     (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
1209                         idev = in_dev_get(dev);
1210                         for_ifa(idev) {
1211                                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1212                                             "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
1213                                              rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
1214
1215                                 ip_addr = ntohl(ifa->ifa_address);
1216                                 i40iw_manage_arp_cache(iwdev,
1217                                                        dev->dev_addr,
1218                                                        &ip_addr,
1219                                                        true,
1220                                                        I40IW_ARP_ADD);
1221                         }
1222                         endfor_ifa(idev);
1223                         in_dev_put(idev);
1224                 }
1225         }
1226         if (got_lock)
1227                 rtnl_unlock();
1228 }
1229
1230 /**
1231  * i40iw_add_mac_ip - add mac and ip addresses
1232  * @iwdev: iwarp device
1233  *
1234  * Create and add a mac ip address entry to the hw table and
1235  * ipv4/ipv6 addresses to the arp cache
1236  * Return 0 if successful, otherwise return error
1237  */
1238 static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
1239 {
1240         struct net_device *netdev = iwdev->netdev;
1241         enum i40iw_status_code status;
1242
1243         status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
1244         if (status)
1245                 return status;
1246         i40iw_add_ipv4_addr(iwdev);
1247         i40iw_add_ipv6_addr(iwdev);
1248         return 0;
1249 }
1250
1251 /**
1252  * i40iw_wait_pe_ready - Check if firmware is ready
1253  * @hw: provides access to registers
1254  */
1255 static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
1256 {
1257         u32 statusfw;
1258         u32 statuscpu0;
1259         u32 statuscpu1;
1260         u32 statuscpu2;
1261         u32 retrycount = 0;
1262
1263         do {
1264                 statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
1265                 i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
1266                 statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
1267                 i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
1268                 statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
1269                 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
1270                               __LINE__, statuscpu1);
1271                 statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
1272                 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
1273                               __LINE__, statuscpu2);
1274                 if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
1275                         break;  /* SUCCESS */
1276                 mdelay(1000);
1277                 retrycount++;
1278         } while (retrycount < 14);
1279         i40iw_wr32(hw, 0xb4040, 0x4C104C5);
1280 }
1281
1282 /**
1283  * i40iw_initialize_dev - initialize device
1284  * @iwdev: iwarp device
1285  * @ldev: lan device information
1286  *
1287  * Allocate memory for the hmc objects and initialize iwdev
1288  * Return 0 if successful, otherwise clean up the resources
1289  * and return error
1290  */
1291 static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
1292                                                    struct i40e_info *ldev)
1293 {
1294         enum i40iw_status_code status;
1295         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1296         struct i40iw_device_init_info info;
1297         struct i40iw_dma_mem mem;
1298         u32 size;
1299
1300         memset(&info, 0, sizeof(info));
1301         size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
1302                                 (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
1303         iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
1304         if (!iwdev->hmc_info_mem) {
1305                 i40iw_pr_err("memory alloc fail\n");
1306                 return I40IW_ERR_NO_MEMORY;
1307         }
1308         iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
1309         dev->hmc_info = &iwdev->hw.hmc;
1310         dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
1311         status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
1312                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1313         if (status)
1314                 goto exit;
1315         info.fpm_query_buf_pa = mem.pa;
1316         info.fpm_query_buf = mem.va;
1317         status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
1318                                        I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
1319         if (status)
1320                 goto exit;
1321         info.fpm_commit_buf_pa = mem.pa;
1322         info.fpm_commit_buf = mem.va;
1323         info.hmc_fn_id = ldev->fid;
1324         info.is_pf = (ldev->ftype) ? false : true;
1325         info.bar0 = ldev->hw_addr;
1326         info.hw = &iwdev->hw;
1327         info.debug_mask = debug;
1328         info.qs_handle = ldev->params.qos.prio_qos[0].qs_handle;
1329         info.exception_lan_queue = 1;
1330         info.vchnl_send = i40iw_virtchnl_send;
1331         status = i40iw_device_init(&iwdev->sc_dev, &info);
1332 exit:
1333         if (status) {
1334                 kfree(iwdev->hmc_info_mem);
1335                 iwdev->hmc_info_mem = NULL;
1336         }
1337         return status;
1338 }
1339
1340 /**
1341  * i40iw_register_notifiers - register tcp ip notifiers
1342  */
1343 static void i40iw_register_notifiers(void)
1344 {
1345         if (!i40iw_notifiers_registered) {
1346                 register_inetaddr_notifier(&i40iw_inetaddr_notifier);
1347                 register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1348                 register_netevent_notifier(&i40iw_net_notifier);
1349         }
1350         i40iw_notifiers_registered++;
1351 }
1352
1353 /**
1354  * i40iw_save_msix_info - copy msix vector information to iwarp device
1355  * @iwdev: iwarp device
1356  * @ldev: lan device information
1357  *
1358  * Allocate iwdev msix table and copy the ldev msix info to the table
1359  * Return 0 if successful, otherwise return error
1360  */
1361 static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
1362                                                    struct i40e_info *ldev)
1363 {
1364         struct i40e_qvlist_info *iw_qvlist;
1365         struct i40e_qv_info *iw_qvinfo;
1366         u32 ceq_idx;
1367         u32 i;
1368         u32 size;
1369
1370         iwdev->msix_count = ldev->msix_count;
1371
1372         size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
1373         size += sizeof(struct i40e_qvlist_info);
1374         size +=  sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
1375         iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
1376
1377         if (!iwdev->iw_msixtbl)
1378                 return I40IW_ERR_NO_MEMORY;
1379         iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
1380         iw_qvlist = iwdev->iw_qvlist;
1381         iw_qvinfo = iw_qvlist->qv_info;
1382         iw_qvlist->num_vectors = iwdev->msix_count;
1383         if (iwdev->msix_count <= num_online_cpus())
1384                 iwdev->msix_shared = true;
1385         for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
1386                 iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
1387                 iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
1388                 if (i == 0) {
1389                         iw_qvinfo->aeq_idx = 0;
1390                         if (iwdev->msix_shared)
1391                                 iw_qvinfo->ceq_idx = ceq_idx++;
1392                         else
1393                                 iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
1394                 } else {
1395                         iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
1396                         iw_qvinfo->ceq_idx = ceq_idx++;
1397                 }
1398                 iw_qvinfo->itr_idx = 3;
1399                 iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
1400         }
1401         return 0;
1402 }
1403
1404 /**
1405  * i40iw_deinit_device - clean up the device resources
1406  * @iwdev: iwarp device
1407  * @reset: true if called before reset
1408  * @del_hdl: true if delete hdl entry
1409  *
1410  * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
1411  * destroy the device queues and free the pble and the hmc objects
1412  */
1413 static void i40iw_deinit_device(struct i40iw_device *iwdev, bool reset, bool del_hdl)
1414 {
1415         struct i40e_info *ldev = iwdev->ldev;
1416
1417         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1418
1419         i40iw_pr_info("state = %d\n", iwdev->init_state);
1420
1421         switch (iwdev->init_state) {
1422         case RDMA_DEV_REGISTERED:
1423                 iwdev->iw_status = 0;
1424                 i40iw_port_ibevent(iwdev);
1425                 i40iw_destroy_rdma_device(iwdev->iwibdev);
1426                 /* fallthrough */
1427         case IP_ADDR_REGISTERED:
1428                 if (!reset)
1429                         i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1430                 /* fallthrough */
1431         case INET_NOTIFIER:
1432                 if (i40iw_notifiers_registered > 0) {
1433                         i40iw_notifiers_registered--;
1434                         unregister_netevent_notifier(&i40iw_net_notifier);
1435                         unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
1436                         unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1437                 }
1438                 /* fallthrough */
1439         case CEQ_CREATED:
1440                 i40iw_dele_ceqs(iwdev, reset);
1441                 /* fallthrough */
1442         case AEQ_CREATED:
1443                 i40iw_destroy_aeq(iwdev, reset);
1444                 /* fallthrough */
1445         case IEQ_CREATED:
1446                 i40iw_puda_dele_resources(dev, I40IW_PUDA_RSRC_TYPE_IEQ, reset);
1447                 /* fallthrough */
1448         case ILQ_CREATED:
1449                 i40iw_puda_dele_resources(dev, I40IW_PUDA_RSRC_TYPE_ILQ, reset);
1450                 /* fallthrough */
1451         case CCQ_CREATED:
1452                 i40iw_destroy_ccq(iwdev, reset);
1453                 /* fallthrough */
1454         case PBLE_CHUNK_MEM:
1455                 i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
1456                 /* fallthrough */
1457         case HMC_OBJS_CREATED:
1458                 i40iw_del_hmc_objects(dev, dev->hmc_info, true, reset);
1459                 /* fallthrough */
1460         case CQP_CREATED:
1461                 i40iw_destroy_cqp(iwdev, !reset);
1462                 /* fallthrough */
1463         case INITIAL_STATE:
1464                 i40iw_cleanup_cm_core(&iwdev->cm_core);
1465                 if (dev->is_pf)
1466                         i40iw_hw_stats_del_timer(dev);
1467
1468                 i40iw_del_init_mem(iwdev);
1469                 break;
1470         case INVALID_STATE:
1471                 /* fallthrough */
1472         default:
1473                 i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
1474                 break;
1475         }
1476
1477         if (del_hdl)
1478                 i40iw_del_handler(i40iw_find_i40e_handler(ldev));
1479         kfree(iwdev->hdl);
1480 }
1481
1482 /**
1483  * i40iw_setup_init_state - set up the initial device struct
1484  * @hdl: handler for iwarp device - one per instance
1485  * @ldev: lan device information
1486  * @client: iwarp client information, provided during registration
1487  *
1488  * Initialize the iwarp device and its hdl information
1489  * using the ldev and client information
1490  * Return 0 if successful, otherwise return error
1491  */
1492 static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
1493                                                      struct i40e_info *ldev,
1494                                                      struct i40e_client *client)
1495 {
1496         struct i40iw_device *iwdev = &hdl->device;
1497         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1498         enum i40iw_status_code status;
1499
1500         memcpy(&hdl->ldev, ldev, sizeof(*ldev));
1501         if (resource_profile == 1)
1502                 resource_profile = 2;
1503
1504         iwdev->mpa_version = mpa_version;
1505         iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
1506             (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
1507             I40IW_HMC_PROFILE_DEFAULT;
1508         iwdev->max_rdma_vfs =
1509                 (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ?  max_rdma_vfs : 0;
1510         iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
1511         iwdev->netdev = ldev->netdev;
1512         hdl->client = client;
1513         iwdev->mss = (!ldev->params.mtu) ? I40IW_DEFAULT_MSS : ldev->params.mtu - I40IW_MTU_TO_MSS;
1514         if (!ldev->ftype)
1515                 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
1516         else
1517                 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
1518
1519         status = i40iw_save_msix_info(iwdev, ldev);
1520         if (status)
1521                 goto exit;
1522         iwdev->hw.dev_context = (void *)ldev->pcidev;
1523         iwdev->hw.hw_addr = ldev->hw_addr;
1524         status = i40iw_allocate_dma_mem(&iwdev->hw,
1525                                         &iwdev->obj_mem, 8192, 4096);
1526         if (status)
1527                 goto exit;
1528         iwdev->obj_next = iwdev->obj_mem;
1529         iwdev->push_mode = push_mode;
1530
1531         init_waitqueue_head(&iwdev->vchnl_waitq);
1532         init_waitqueue_head(&dev->vf_reqs);
1533
1534         status = i40iw_initialize_dev(iwdev, ldev);
1535 exit:
1536         if (status) {
1537                 kfree(iwdev->iw_msixtbl);
1538                 i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
1539                 iwdev->iw_msixtbl = NULL;
1540         }
1541         return status;
1542 }
1543
1544 /**
1545  * i40iw_open - client interface operation open for iwarp/uda device
1546  * @ldev: lan device information
1547  * @client: iwarp client information, provided during registration
1548  *
1549  * Called by the lan driver during the processing of client register
1550  * Create device resources, set up queues, pble and hmc objects and
1551  * register the device with the ib verbs interface
1552  * Return 0 if successful, otherwise return error
1553  */
1554 static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
1555 {
1556         struct i40iw_device *iwdev;
1557         struct i40iw_sc_dev *dev;
1558         enum i40iw_status_code status;
1559         struct i40iw_handler *hdl;
1560
1561         hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
1562         if (!hdl)
1563                 return -ENOMEM;
1564         iwdev = &hdl->device;
1565         iwdev->hdl = hdl;
1566         dev = &iwdev->sc_dev;
1567         i40iw_setup_cm_core(iwdev);
1568
1569         dev->back_dev = (void *)iwdev;
1570         iwdev->ldev = &hdl->ldev;
1571         iwdev->client = client;
1572         mutex_init(&iwdev->pbl_mutex);
1573         i40iw_add_handler(hdl);
1574
1575         do {
1576                 status = i40iw_setup_init_state(hdl, ldev, client);
1577                 if (status)
1578                         break;
1579                 iwdev->init_state = INITIAL_STATE;
1580                 if (dev->is_pf)
1581                         i40iw_wait_pe_ready(dev->hw);
1582                 status = i40iw_create_cqp(iwdev);
1583                 if (status)
1584                         break;
1585                 iwdev->init_state = CQP_CREATED;
1586                 status = i40iw_hmc_setup(iwdev);
1587                 if (status)
1588                         break;
1589                 status = i40iw_create_ccq(iwdev);
1590                 if (status)
1591                         break;
1592                 iwdev->init_state = CCQ_CREATED;
1593                 status = i40iw_initialize_ilq(iwdev);
1594                 if (status)
1595                         break;
1596                 iwdev->init_state = ILQ_CREATED;
1597                 status = i40iw_initialize_ieq(iwdev);
1598                 if (status)
1599                         break;
1600                 iwdev->init_state = IEQ_CREATED;
1601                 status = i40iw_setup_aeq(iwdev);
1602                 if (status)
1603                         break;
1604                 iwdev->init_state = AEQ_CREATED;
1605                 status = i40iw_setup_ceqs(iwdev, ldev);
1606                 if (status)
1607                         break;
1608                 iwdev->init_state = CEQ_CREATED;
1609                 status = i40iw_initialize_hw_resources(iwdev);
1610                 if (status)
1611                         break;
1612                 dev->ccq_ops->ccq_arm(dev->ccq);
1613                 status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
1614                 if (status)
1615                         break;
1616                 iwdev->virtchnl_wq = create_singlethread_workqueue("iwvch");
1617                 i40iw_register_notifiers();
1618                 iwdev->init_state = INET_NOTIFIER;
1619                 status = i40iw_add_mac_ip(iwdev);
1620                 if (status)
1621                         break;
1622                 iwdev->init_state = IP_ADDR_REGISTERED;
1623                 if (i40iw_register_rdma_device(iwdev)) {
1624                         i40iw_pr_err("register rdma device fail\n");
1625                         break;
1626                 };
1627
1628                 iwdev->init_state = RDMA_DEV_REGISTERED;
1629                 iwdev->iw_status = 1;
1630                 i40iw_port_ibevent(iwdev);
1631                 i40iw_pr_info("i40iw_open completed\n");
1632                 return 0;
1633         } while (0);
1634
1635         i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
1636         i40iw_deinit_device(iwdev, false, false);
1637         return -ERESTART;
1638 }
1639
1640 /**
1641  * i40iw_l2param_change : handle qs handles for qos and mss change
1642  * @ldev: lan device information
1643  * @client: client for paramater change
1644  * @params: new parameters from L2
1645  */
1646 static void i40iw_l2param_change(struct i40e_info *ldev,
1647                                  struct i40e_client *client,
1648                                  struct i40e_params *params)
1649 {
1650         struct i40iw_handler *hdl;
1651         struct i40iw_device *iwdev;
1652
1653         hdl = i40iw_find_i40e_handler(ldev);
1654         if (!hdl)
1655                 return;
1656
1657         iwdev = &hdl->device;
1658         if (params->mtu)
1659                 iwdev->mss = params->mtu - I40IW_MTU_TO_MSS;
1660 }
1661
1662 /**
1663  * i40iw_close - client interface operation close for iwarp/uda device
1664  * @ldev: lan device information
1665  * @client: client to close
1666  *
1667  * Called by the lan driver during the processing of client unregister
1668  * Destroy and clean up the driver resources
1669  */
1670 static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
1671 {
1672         struct i40iw_device *iwdev;
1673         struct i40iw_handler *hdl;
1674
1675         hdl = i40iw_find_i40e_handler(ldev);
1676         if (!hdl)
1677                 return;
1678
1679         iwdev = &hdl->device;
1680         destroy_workqueue(iwdev->virtchnl_wq);
1681         i40iw_deinit_device(iwdev, reset, true);
1682 }
1683
1684 /**
1685  * i40iw_vf_reset - process VF reset
1686  * @ldev: lan device information
1687  * @client: client interface instance
1688  * @vf_id: virtual function id
1689  *
1690  * Called when a VF is reset by the PF
1691  * Destroy and clean up the VF resources
1692  */
1693 static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
1694 {
1695         struct i40iw_handler *hdl;
1696         struct i40iw_sc_dev *dev;
1697         struct i40iw_hmc_fcn_info hmc_fcn_info;
1698         struct i40iw_virt_mem vf_dev_mem;
1699         struct i40iw_vfdev *tmp_vfdev;
1700         unsigned int i;
1701         unsigned long flags;
1702
1703         hdl = i40iw_find_i40e_handler(ldev);
1704         if (!hdl)
1705                 return;
1706
1707         dev = &hdl->device.sc_dev;
1708
1709         for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
1710                 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
1711                         continue;
1712                 /* free all resources allocated on behalf of vf */
1713                 tmp_vfdev = dev->vf_dev[i];
1714                 spin_lock_irqsave(&dev->dev_pestat.stats_lock, flags);
1715                 dev->vf_dev[i] = NULL;
1716                 spin_unlock_irqrestore(&dev->dev_pestat.stats_lock, flags);
1717                 i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
1718                 /* remove vf hmc function */
1719                 memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
1720                 hmc_fcn_info.vf_id = vf_id;
1721                 hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
1722                 hmc_fcn_info.free_fcn = true;
1723                 i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
1724                 /* free vf_dev */
1725                 vf_dev_mem.va = tmp_vfdev;
1726                 vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
1727                                         sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
1728                 i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
1729                 break;
1730         }
1731 }
1732
1733 /**
1734  * i40iw_vf_enable - enable a number of VFs
1735  * @ldev: lan device information
1736  * @client: client interface instance
1737  * @num_vfs: number of VFs for the PF
1738  *
1739  * Called when the number of VFs changes
1740  */
1741 static void i40iw_vf_enable(struct i40e_info *ldev,
1742                             struct i40e_client *client,
1743                             u32 num_vfs)
1744 {
1745         struct i40iw_handler *hdl;
1746
1747         hdl = i40iw_find_i40e_handler(ldev);
1748         if (!hdl)
1749                 return;
1750
1751         if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
1752                 hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
1753         else
1754                 hdl->device.max_enabled_vfs = num_vfs;
1755 }
1756
1757 /**
1758  * i40iw_vf_capable - check if VF capable
1759  * @ldev: lan device information
1760  * @client: client interface instance
1761  * @vf_id: virtual function id
1762  *
1763  * Return 1 if a VF slot is available or if VF is already RDMA enabled
1764  * Return 0 otherwise
1765  */
1766 static int i40iw_vf_capable(struct i40e_info *ldev,
1767                             struct i40e_client *client,
1768                             u32 vf_id)
1769 {
1770         struct i40iw_handler *hdl;
1771         struct i40iw_sc_dev *dev;
1772         unsigned int i;
1773
1774         hdl = i40iw_find_i40e_handler(ldev);
1775         if (!hdl)
1776                 return 0;
1777
1778         dev = &hdl->device.sc_dev;
1779
1780         for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
1781                 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
1782                         return 1;
1783         }
1784
1785         return 0;
1786 }
1787
1788 /**
1789  * i40iw_virtchnl_receive - receive a message through the virtual channel
1790  * @ldev: lan device information
1791  * @client: client interface instance
1792  * @vf_id: virtual function id associated with the message
1793  * @msg: message buffer pointer
1794  * @len: length of the message
1795  *
1796  * Invoke virtual channel receive operation for the given msg
1797  * Return 0 if successful, otherwise return error
1798  */
1799 static int i40iw_virtchnl_receive(struct i40e_info *ldev,
1800                                   struct i40e_client *client,
1801                                   u32 vf_id,
1802                                   u8 *msg,
1803                                   u16 len)
1804 {
1805         struct i40iw_handler *hdl;
1806         struct i40iw_sc_dev *dev;
1807         struct i40iw_device *iwdev;
1808         int ret_code = I40IW_NOT_SUPPORTED;
1809
1810         if (!len || !msg)
1811                 return I40IW_ERR_PARAM;
1812
1813         hdl = i40iw_find_i40e_handler(ldev);
1814         if (!hdl)
1815                 return I40IW_ERR_PARAM;
1816
1817         dev = &hdl->device.sc_dev;
1818         iwdev = dev->back_dev;
1819
1820         if (dev->vchnl_if.vchnl_recv) {
1821                 ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
1822                 if (!dev->is_pf) {
1823                         atomic_dec(&iwdev->vchnl_msgs);
1824                         wake_up(&iwdev->vchnl_waitq);
1825                 }
1826         }
1827         return ret_code;
1828 }
1829
1830 /**
1831  * i40iw_vf_clear_to_send - wait to send virtual channel message
1832  * @dev: iwarp device *
1833  * Wait for until virtual channel is clear
1834  * before sending the next message
1835  *
1836  * Returns false if error
1837  * Returns true if clear to send
1838  */
1839 bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
1840 {
1841         struct i40iw_device *iwdev;
1842         wait_queue_t wait;
1843
1844         iwdev = dev->back_dev;
1845
1846         if (!wq_has_sleeper(&dev->vf_reqs) &&
1847             (atomic_read(&iwdev->vchnl_msgs) == 0))
1848                 return true; /* virtual channel is clear */
1849
1850         init_wait(&wait);
1851         add_wait_queue_exclusive(&dev->vf_reqs, &wait);
1852
1853         if (!wait_event_timeout(dev->vf_reqs,
1854                                 (atomic_read(&iwdev->vchnl_msgs) == 0),
1855                                 I40IW_VCHNL_EVENT_TIMEOUT))
1856                 dev->vchnl_up = false;
1857
1858         remove_wait_queue(&dev->vf_reqs, &wait);
1859
1860         return dev->vchnl_up;
1861 }
1862
1863 /**
1864  * i40iw_virtchnl_send - send a message through the virtual channel
1865  * @dev: iwarp device
1866  * @vf_id: virtual function id associated with the message
1867  * @msg: virtual channel message buffer pointer
1868  * @len: length of the message
1869  *
1870  * Invoke virtual channel send operation for the given msg
1871  * Return 0 if successful, otherwise return error
1872  */
1873 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
1874                                                   u32 vf_id,
1875                                                   u8 *msg,
1876                                                   u16 len)
1877 {
1878         struct i40iw_device *iwdev;
1879         struct i40e_info *ldev;
1880
1881         if (!dev || !dev->back_dev)
1882                 return I40IW_ERR_BAD_PTR;
1883
1884         iwdev = dev->back_dev;
1885         ldev = iwdev->ldev;
1886
1887         if (ldev && ldev->ops && ldev->ops->virtchnl_send)
1888                 return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
1889         return I40IW_ERR_BAD_PTR;
1890 }
1891
1892 /* client interface functions */
1893 static const struct i40e_client_ops i40e_ops = {
1894         .open = i40iw_open,
1895         .close = i40iw_close,
1896         .l2_param_change = i40iw_l2param_change,
1897         .virtchnl_receive = i40iw_virtchnl_receive,
1898         .vf_reset = i40iw_vf_reset,
1899         .vf_enable = i40iw_vf_enable,
1900         .vf_capable = i40iw_vf_capable
1901 };
1902
1903 /**
1904  * i40iw_init_module - driver initialization function
1905  *
1906  * First function to call when the driver is loaded
1907  * Register the driver as i40e client and port mapper client
1908  */
1909 static int __init i40iw_init_module(void)
1910 {
1911         int ret;
1912
1913         memset(&i40iw_client, 0, sizeof(i40iw_client));
1914         i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
1915         i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
1916         i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
1917         i40iw_client.ops = &i40e_ops;
1918         memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
1919         i40iw_client.type = I40E_CLIENT_IWARP;
1920         spin_lock_init(&i40iw_handler_lock);
1921         ret = i40e_register_client(&i40iw_client);
1922         return ret;
1923 }
1924
1925 /**
1926  * i40iw_exit_module - driver exit clean up function
1927  *
1928  * The function is called just before the driver is unloaded
1929  * Unregister the driver as i40e client and port mapper client
1930  */
1931 static void __exit i40iw_exit_module(void)
1932 {
1933         i40e_unregister_client(&i40iw_client);
1934 }
1935
1936 module_init(i40iw_init_module);
1937 module_exit(i40iw_exit_module);