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 atomic_t 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         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 241         struct i40iw_cqp *cqp = &iwdev->cqp;
 242
 243         if (free_hwcqp)
 244                 dev->cqp_ops->cqp_destroy(dev->cqp);
 245
 246         i40iw_free_dma_mem(dev->hw, &cqp->sq);
 247         kfree(cqp->scratch_array);
 248         iwdev->cqp.scratch_array = NULL;
 249
 250         kfree(cqp->cqp_requests);
 251         cqp->cqp_requests = NULL;
 252 }
 253
 254 /**
 255  * i40iw_disable_irqs - disable device interrupts
 256  * @dev: hardware control device structure
 257  * @msic_vec: msix vector to disable irq
 258  * @dev_id: parameter to pass to free_irq (used during irq setup)
 259  *
 260  * The function is called when destroying aeq/ceq
 261  */
 262 static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
 263                               struct i40iw_msix_vector *msix_vec,
 264                               void *dev_id)
 265 {
 266         if (dev->is_pf)
 267                 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
 268         else
 269                 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0);
 270         irq_set_affinity_hint(msix_vec->irq, NULL);
 271         free_irq(msix_vec->irq, dev_id);
 272 }
 273
 274 /**
 275  * i40iw_destroy_aeq - destroy aeq
 276  * @iwdev: iwarp device
 277  * @reset: true if called before reset
 278  *
 279  * Issue a destroy aeq request and
 280  * free the resources associated with the aeq
 281  * The function is called during driver unload
 282  */
 283 static void i40iw_destroy_aeq(struct i40iw_device *iwdev, bool reset)
 284 {
 285         enum i40iw_status_code status = I40IW_ERR_NOT_READY;
 286         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 287         struct i40iw_aeq *aeq = &iwdev->aeq;
 288
 289         if (!iwdev->msix_shared)
 290                 i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev);
 291         if (reset)
 292                 goto exit;
 293
 294         if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1))
 295                 status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq);
 296         if (status)
 297                 i40iw_pr_err("destroy aeq failed %d\n", status);
 298
 299 exit:
 300         i40iw_free_dma_mem(dev->hw, &aeq->mem);
 301 }
 302
 303 /**
 304  * i40iw_destroy_ceq - destroy ceq
 305  * @iwdev: iwarp device
 306  * @iwceq: ceq to be destroyed
 307  * @reset: true if called before reset
 308  *
 309  * Issue a destroy ceq request and
 310  * free the resources associated with the ceq
 311  */
 312 static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
 313                               struct i40iw_ceq *iwceq,
 314                               bool reset)
 315 {
 316         enum i40iw_status_code status;
 317         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 318
 319         if (reset)
 320                 goto exit;
 321
 322         status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1);
 323         if (status) {
 324                 i40iw_pr_err("ceq destroy command failed %d\n", status);
 325                 goto exit;
 326         }
 327
 328         status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq);
 329         if (status)
 330                 i40iw_pr_err("ceq destroy completion failed %d\n", status);
 331 exit:
 332         i40iw_free_dma_mem(dev->hw, &iwceq->mem);
 333 }
 334
 335 /**
 336  * i40iw_dele_ceqs - destroy all ceq's
 337  * @iwdev: iwarp device
 338  * @reset: true if called before reset
 339  *
 340  * Go through all of the device ceq's and for each ceq
 341  * disable the ceq interrupt and destroy the ceq
 342  */
 343 static void i40iw_dele_ceqs(struct i40iw_device *iwdev, bool reset)
 344 {
 345         u32 i = 0;
 346         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 347         struct i40iw_ceq *iwceq = iwdev->ceqlist;
 348         struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
 349
 350         if (iwdev->msix_shared) {
 351                 i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
 352                 i40iw_destroy_ceq(iwdev, iwceq, reset);
 353                 iwceq++;
 354                 i++;
 355         }
 356
 357         for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) {
 358                 i40iw_disable_irq(dev, msix_vec, (void *)iwceq);
 359                 i40iw_destroy_ceq(iwdev, iwceq, reset);
 360         }
 361 }
 362
 363 /**
 364  * i40iw_destroy_ccq - destroy control cq
 365  * @iwdev: iwarp device
 366  * @reset: true if called before reset
 367  *
 368  * Issue destroy ccq request and
 369  * free the resources associated with the ccq
 370  */
 371 static void i40iw_destroy_ccq(struct i40iw_device *iwdev, bool reset)
 372 {
 373         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 374         struct i40iw_ccq *ccq = &iwdev->ccq;
 375         enum i40iw_status_code status = 0;
 376
 377         if (!reset)
 378                 status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true);
 379         if (status)
 380                 i40iw_pr_err("ccq destroy failed %d\n", status);
 381         i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
 382 }
 383
 384 /* types of hmc objects */
 385 static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = {
 386         I40IW_HMC_IW_QP,
 387         I40IW_HMC_IW_CQ,
 388         I40IW_HMC_IW_HTE,
 389         I40IW_HMC_IW_ARP,
 390         I40IW_HMC_IW_APBVT_ENTRY,
 391         I40IW_HMC_IW_MR,
 392         I40IW_HMC_IW_XF,
 393         I40IW_HMC_IW_XFFL,
 394         I40IW_HMC_IW_Q1,
 395         I40IW_HMC_IW_Q1FL,
 396         I40IW_HMC_IW_TIMER,
 397 };
 398
 399 /**
 400  * i40iw_close_hmc_objects_type - delete hmc objects of a given type
 401  * @iwdev: iwarp device
 402  * @obj_type: the hmc object type to be deleted
 403  * @is_pf: true if the function is PF otherwise false
 404  * @reset: true if called before reset
 405  */
 406 static void i40iw_close_hmc_objects_type(struct i40iw_sc_dev *dev,
 407                                          enum i40iw_hmc_rsrc_type obj_type,
 408                                          struct i40iw_hmc_info *hmc_info,
 409                                          bool is_pf,
 410                                          bool reset)
 411 {
 412         struct i40iw_hmc_del_obj_info info;
 413
 414         memset(&info, 0, sizeof(info));
 415         info.hmc_info = hmc_info;
 416         info.rsrc_type = obj_type;
 417         info.count = hmc_info->hmc_obj[obj_type].cnt;
 418         info.is_pf = is_pf;
 419         if (dev->hmc_ops->del_hmc_object(dev, &info, reset))
 420                 i40iw_pr_err("del obj of type %d failed\n", obj_type);
 421 }
 422
 423 /**
 424  * i40iw_del_hmc_objects - remove all device hmc objects
 425  * @dev: iwarp device
 426  * @hmc_info: hmc_info to free
 427  * @is_pf: true if hmc_info belongs to PF, not vf nor allocated
 428  *         by PF on behalf of VF
 429  * @reset: true if called before reset
 430  */
 431 static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev,
 432                                   struct i40iw_hmc_info *hmc_info,
 433                                   bool is_pf,
 434                                   bool reset)
 435 {
 436         unsigned int i;
 437
 438         for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++)
 439                 i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], hmc_info, is_pf, reset);
 440 }
 441
 442 /**
 443  * i40iw_ceq_handler - interrupt handler for ceq
 444  * @data: ceq pointer
 445  */
 446 static irqreturn_t i40iw_ceq_handler(int irq, void *data)
 447 {
 448         struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
 449
 450         if (iwceq->irq != irq)
 451                 i40iw_pr_err("expected irq = %d received irq = %d\n", iwceq->irq, irq);
 452         tasklet_schedule(&iwceq->dpc_tasklet);
 453         return IRQ_HANDLED;
 454 }
 455
 456 /**
 457  * i40iw_create_hmc_obj_type - create hmc object of a given type
 458  * @dev: hardware control device structure
 459  * @info: information for the hmc object to create
 460  */
 461 static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev,
 462                                                         struct i40iw_hmc_create_obj_info *info)
 463 {
 464         return dev->hmc_ops->create_hmc_object(dev, info);
 465 }
 466
 467 /**
 468  * i40iw_create_hmc_objs - create all hmc objects for the device
 469  * @iwdev: iwarp device
 470  * @is_pf: true if the function is PF otherwise false
 471  *
 472  * Create the device hmc objects and allocate hmc pages
 473  * Return 0 if successful, otherwise clean up and return error
 474  */
 475 static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev,
 476                                                     bool is_pf)
 477 {
 478         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 479         struct i40iw_hmc_create_obj_info info;
 480         enum i40iw_status_code status;
 481         int i;
 482
 483         memset(&info, 0, sizeof(info));
 484         info.hmc_info = dev->hmc_info;
 485         info.is_pf = is_pf;
 486         info.entry_type = iwdev->sd_type;
 487         for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) {
 488                 info.rsrc_type = iw_hmc_obj_types[i];
 489                 info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt;
 490                 status = i40iw_create_hmc_obj_type(dev, &info);
 491                 if (status) {
 492                         i40iw_pr_err("create obj type %d status = %d\n",
 493                                      iw_hmc_obj_types[i], status);
 494                         break;
 495                 }
 496         }
 497         if (!status)
 498                 return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
 499                                                                       dev->hmc_fn_id,
 500                                                                       true, true));
 501
 502         while (i) {
 503                 i--;
 504                 /* destroy the hmc objects of a given type */
 505                 i40iw_close_hmc_objects_type(dev,
 506                                              iw_hmc_obj_types[i],
 507                                              dev->hmc_info,
 508                                              is_pf,
 509                                              false);
 510         }
 511         return status;
 512 }
 513
 514 /**
 515  * i40iw_obj_aligned_mem - get aligned memory from device allocated memory
 516  * @iwdev: iwarp device
 517  * @memptr: points to the memory addresses
 518  * @size: size of memory needed
 519  * @mask: mask for the aligned memory
 520  *
 521  * Get aligned memory of the requested size and
 522  * update the memptr to point to the new aligned memory
 523  * Return 0 if successful, otherwise return no memory error
 524  */
 525 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
 526                                              struct i40iw_dma_mem *memptr,
 527                                              u32 size,
 528                                              u32 mask)
 529 {
 530         unsigned long va, newva;
 531         unsigned long extra;
 532
 533         va = (unsigned long)iwdev->obj_next.va;
 534         newva = va;
 535         if (mask)
 536                 newva = ALIGN(va, (mask + 1));
 537         extra = newva - va;
 538         memptr->va = (u8 *)va + extra;
 539         memptr->pa = iwdev->obj_next.pa + extra;
 540         memptr->size = size;
 541         if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
 542                 return I40IW_ERR_NO_MEMORY;
 543
 544         iwdev->obj_next.va = memptr->va + size;
 545         iwdev->obj_next.pa = memptr->pa + size;
 546         return 0;
 547 }
 548
 549 /**
 550  * i40iw_create_cqp - create control qp
 551  * @iwdev: iwarp device
 552  *
 553  * Return 0, if the cqp and all the resources associated with it
 554  * are successfully created, otherwise return error
 555  */
 556 static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
 557 {
 558         enum i40iw_status_code status;
 559         u32 sqsize = I40IW_CQP_SW_SQSIZE_2048;
 560         struct i40iw_dma_mem mem;
 561         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 562         struct i40iw_cqp_init_info cqp_init_info;
 563         struct i40iw_cqp *cqp = &iwdev->cqp;
 564         u16 maj_err, min_err;
 565         int i;
 566
 567         cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL);
 568         if (!cqp->cqp_requests)
 569                 return I40IW_ERR_NO_MEMORY;
 570         cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL);
 571         if (!cqp->scratch_array) {
 572                 kfree(cqp->cqp_requests);
 573                 return I40IW_ERR_NO_MEMORY;
 574         }
 575         dev->cqp = &cqp->sc_cqp;
 576         dev->cqp->dev = dev;
 577         memset(&cqp_init_info, 0, sizeof(cqp_init_info));
 578         status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq,
 579                                         (sizeof(struct i40iw_cqp_sq_wqe) * sqsize),
 580                                         I40IW_CQP_ALIGNMENT);
 581         if (status)
 582                 goto exit;
 583         status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
 584                                        I40IW_HOST_CTX_ALIGNMENT_MASK);
 585         if (status)
 586                 goto exit;
 587         dev->cqp->host_ctx_pa = mem.pa;
 588         dev->cqp->host_ctx = mem.va;
 589         /* populate the cqp init info */
 590         cqp_init_info.dev = dev;
 591         cqp_init_info.sq_size = sqsize;
 592         cqp_init_info.sq = cqp->sq.va;
 593         cqp_init_info.sq_pa = cqp->sq.pa;
 594         cqp_init_info.host_ctx_pa = mem.pa;
 595         cqp_init_info.host_ctx = mem.va;
 596         cqp_init_info.hmc_profile = iwdev->resource_profile;
 597         cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs;
 598         cqp_init_info.scratch_array = cqp->scratch_array;
 599         status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info);
 600         if (status) {
 601                 i40iw_pr_err("cqp init status %d\n", status);
 602                 goto exit;
 603         }
 604         status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err);
 605         if (status) {
 606                 i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
 607                              status, maj_err, min_err);
 608                 goto exit;
 609         }
 610         spin_lock_init(&cqp->req_lock);
 611         INIT_LIST_HEAD(&cqp->cqp_avail_reqs);
 612         INIT_LIST_HEAD(&cqp->cqp_pending_reqs);
 613         /* init the waitq of the cqp_requests and add them to the list */
 614         for (i = 0; i < I40IW_CQP_SW_SQSIZE_2048; i++) {
 615                 init_waitqueue_head(&cqp->cqp_requests[i].waitq);
 616                 list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs);
 617         }
 618         return 0;
 619 exit:
 620         /* clean up the created resources */
 621         i40iw_destroy_cqp(iwdev, false);
 622         return status;
 623 }
 624
 625 /**
 626  * i40iw_create_ccq - create control cq
 627  * @iwdev: iwarp device
 628  *
 629  * Return 0, if the ccq and the resources associated with it
 630  * are successfully created, otherwise return error
 631  */
 632 static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
 633 {
 634         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 635         struct i40iw_dma_mem mem;
 636         enum i40iw_status_code status;
 637         struct i40iw_ccq_init_info info;
 638         struct i40iw_ccq *ccq = &iwdev->ccq;
 639
 640         memset(&info, 0, sizeof(info));
 641         dev->ccq = &ccq->sc_cq;
 642         dev->ccq->dev = dev;
 643         info.dev = dev;
 644         ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area);
 645         ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE;
 646         status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq,
 647                                         ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT);
 648         if (status)
 649                 goto exit;
 650         status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
 651                                        I40IW_SHADOWAREA_MASK);
 652         if (status)
 653                 goto exit;
 654         ccq->sc_cq.back_cq = (void *)ccq;
 655         /* populate the ccq init info */
 656         info.cq_base = ccq->mem_cq.va;
 657         info.cq_pa = ccq->mem_cq.pa;
 658         info.num_elem = IW_CCQ_SIZE;
 659         info.shadow_area = mem.va;
 660         info.shadow_area_pa = mem.pa;
 661         info.ceqe_mask = false;
 662         info.ceq_id_valid = true;
 663         info.shadow_read_threshold = 16;
 664         status = dev->ccq_ops->ccq_init(dev->ccq, &info);
 665         if (!status)
 666                 status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
 667 exit:
 668         if (status)
 669                 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
 670         return status;
 671 }
 672
 673 /**
 674  * i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq
 675  * @iwdev: iwarp device
 676  * @msix_vec: interrupt vector information
 677  * @iwceq: ceq associated with the vector
 678  * @ceq_id: the id number of the iwceq
 679  *
 680  * Allocate interrupt resources and enable irq handling
 681  * Return 0 if successful, otherwise return error
 682  */
 683 static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
 684                                                          struct i40iw_ceq *iwceq,
 685                                                          u32 ceq_id,
 686                                                          struct i40iw_msix_vector *msix_vec)
 687 {
 688         enum i40iw_status_code status;
 689         cpumask_t mask;
 690
 691         if (iwdev->msix_shared && !ceq_id) {
 692                 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
 693                 status = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "AEQCEQ", iwdev);
 694         } else {
 695                 tasklet_init(&iwceq->dpc_tasklet, i40iw_ceq_dpc, (unsigned long)iwceq);
 696                 status = request_irq(msix_vec->irq, i40iw_ceq_handler, 0, "CEQ", iwceq);
 697         }
 698
 699         cpumask_clear(&mask);
 700         cpumask_set_cpu(msix_vec->cpu_affinity, &mask);
 701         irq_set_affinity_hint(msix_vec->irq, &mask);
 702
 703         if (status) {
 704                 i40iw_pr_err("ceq irq config fail\n");
 705                 return I40IW_ERR_CONFIG;
 706         }
 707         msix_vec->ceq_id = ceq_id;
 708
 709         return 0;
 710 }
 711
 712 /**
 713  * i40iw_create_ceq - create completion event queue
 714  * @iwdev: iwarp device
 715  * @iwceq: pointer to the ceq resources to be created
 716  * @ceq_id: the id number of the iwceq
 717  *
 718  * Return 0, if the ceq and the resources associated with it
 719  * are successfully created, otherwise return error
 720  */
 721 static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev,
 722                                                struct i40iw_ceq *iwceq,
 723                                                u32 ceq_id)
 724 {
 725         enum i40iw_status_code status;
 726         struct i40iw_ceq_init_info info;
 727         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 728         u64 scratch;
 729
 730         memset(&info, 0, sizeof(info));
 731         info.ceq_id = ceq_id;
 732         iwceq->iwdev = iwdev;
 733         iwceq->mem.size = sizeof(struct i40iw_ceqe) *
 734                 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 735         status = i40iw_allocate_dma_mem(dev->hw, &iwceq->mem, iwceq->mem.size,
 736                                         I40IW_CEQ_ALIGNMENT);
 737         if (status)
 738                 goto exit;
 739         info.ceq_id = ceq_id;
 740         info.ceqe_base = iwceq->mem.va;
 741         info.ceqe_pa = iwceq->mem.pa;
 742
 743         info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 744         iwceq->sc_ceq.ceq_id = ceq_id;
 745         info.dev = dev;
 746         scratch = (uintptr_t)&iwdev->cqp.sc_cqp;
 747         status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info);
 748         if (!status)
 749                 status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch);
 750
 751 exit:
 752         if (status)
 753                 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
 754         return status;
 755 }
 756
 757 void i40iw_request_reset(struct i40iw_device *iwdev)
 758 {
 759         struct i40e_info *ldev = iwdev->ldev;
 760
 761         ldev->ops->request_reset(ldev, iwdev->client, 1);
 762 }
 763
 764 /**
 765  * i40iw_setup_ceqs - manage the device ceq's and their interrupt resources
 766  * @iwdev: iwarp device
 767  * @ldev: i40e lan device
 768  *
 769  * Allocate a list for all device completion event queues
 770  * Create the ceq's and configure their msix interrupt vectors
 771  * Return 0, if at least one ceq is successfully set up, otherwise return error
 772  */
 773 static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev,
 774                                                struct i40e_info *ldev)
 775 {
 776         u32 i;
 777         u32 ceq_id;
 778         struct i40iw_ceq *iwceq;
 779         struct i40iw_msix_vector *msix_vec;
 780         enum i40iw_status_code status = 0;
 781         u32 num_ceqs;
 782
 783         if (ldev && ldev->ops && ldev->ops->setup_qvlist) {
 784                 status = ldev->ops->setup_qvlist(ldev, &i40iw_client,
 785                                                  iwdev->iw_qvlist);
 786                 if (status)
 787                         goto exit;
 788         } else {
 789                 status = I40IW_ERR_BAD_PTR;
 790                 goto exit;
 791         }
 792
 793         num_ceqs = min(iwdev->msix_count, iwdev->sc_dev.hmc_fpm_misc.max_ceqs);
 794         iwdev->ceqlist = kcalloc(num_ceqs, sizeof(*iwdev->ceqlist), GFP_KERNEL);
 795         if (!iwdev->ceqlist) {
 796                 status = I40IW_ERR_NO_MEMORY;
 797                 goto exit;
 798         }
 799         i = (iwdev->msix_shared) ? 0 : 1;
 800         for (ceq_id = 0; i < num_ceqs; i++, ceq_id++) {
 801                 iwceq = &iwdev->ceqlist[ceq_id];
 802                 status = i40iw_create_ceq(iwdev, iwceq, ceq_id);
 803                 if (status) {
 804                         i40iw_pr_err("create ceq status = %d\n", status);
 805                         break;
 806                 }
 807
 808                 msix_vec = &iwdev->iw_msixtbl[i];
 809                 iwceq->irq = msix_vec->irq;
 810                 iwceq->msix_idx = msix_vec->idx;
 811                 status = i40iw_configure_ceq_vector(iwdev, iwceq, ceq_id, msix_vec);
 812                 if (status) {
 813                         i40iw_destroy_ceq(iwdev, iwceq, false);
 814                         break;
 815                 }
 816                 i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
 817                 iwdev->ceqs_count++;
 818         }
 819
 820 exit:
 821         if (status) {
 822                 if (!iwdev->ceqs_count) {
 823                         kfree(iwdev->ceqlist);
 824                         iwdev->ceqlist = NULL;
 825                 } else {
 826                         status = 0;
 827                 }
 828         }
 829         return status;
 830 }
 831
 832 /**
 833  * i40iw_configure_aeq_vector - set up the msix vector for aeq
 834  * @iwdev: iwarp device
 835  *
 836  * Allocate interrupt resources and enable irq handling
 837  * Return 0 if successful, otherwise return error
 838  */
 839 static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
 840 {
 841         struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
 842         u32 ret = 0;
 843
 844         if (!iwdev->msix_shared) {
 845                 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
 846                 ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev);
 847         }
 848         if (ret) {
 849                 i40iw_pr_err("aeq irq config fail\n");
 850                 return I40IW_ERR_CONFIG;
 851         }
 852
 853         return 0;
 854 }
 855
 856 /**
 857  * i40iw_create_aeq - create async event queue
 858  * @iwdev: iwarp device
 859  *
 860  * Return 0, if the aeq and the resources associated with it
 861  * are successfully created, otherwise return error
 862  */
 863 static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
 864 {
 865         enum i40iw_status_code status;
 866         struct i40iw_aeq_init_info info;
 867         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 868         struct i40iw_aeq *aeq = &iwdev->aeq;
 869         u64 scratch = 0;
 870         u32 aeq_size;
 871
 872         aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt +
 873                 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 874         memset(&info, 0, sizeof(info));
 875         aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size;
 876         status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size,
 877                                         I40IW_AEQ_ALIGNMENT);
 878         if (status)
 879                 goto exit;
 880
 881         info.aeqe_base = aeq->mem.va;
 882         info.aeq_elem_pa = aeq->mem.pa;
 883         info.elem_cnt = aeq_size;
 884         info.dev = dev;
 885         status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
 886         if (status)
 887                 goto exit;
 888         status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
 889         if (!status)
 890                 status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
 891 exit:
 892         if (status)
 893                 i40iw_free_dma_mem(dev->hw, &aeq->mem);
 894         return status;
 895 }
 896
 897 /**
 898  * i40iw_setup_aeq - set up the device aeq
 899  * @iwdev: iwarp device
 900  *
 901  * Create the aeq and configure its msix interrupt vector
 902  * Return 0 if successful, otherwise return error
 903  */
 904 static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
 905 {
 906         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 907         enum i40iw_status_code status;
 908
 909         status = i40iw_create_aeq(iwdev);
 910         if (status)
 911                 return status;
 912
 913         status = i40iw_configure_aeq_vector(iwdev);
 914         if (status) {
 915                 i40iw_destroy_aeq(iwdev, false);
 916                 return status;
 917         }
 918
 919         if (!iwdev->msix_shared)
 920                 i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
 921         return 0;
 922 }
 923
 924 /**
 925  * i40iw_initialize_ilq - create iwarp local queue for cm
 926  * @iwdev: iwarp device
 927  *
 928  * Return 0 if successful, otherwise return error
 929  */
 930 static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
 931 {
 932         struct i40iw_puda_rsrc_info info;
 933         enum i40iw_status_code status;
 934
 935         memset(&info, 0, sizeof(info));
 936         info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
 937         info.cq_id = 1;
 938         info.qp_id = 0;
 939         info.count = 1;
 940         info.pd_id = 1;
 941         info.sq_size = 8192;
 942         info.rq_size = 8192;
 943         info.buf_size = 1024;
 944         info.tx_buf_cnt = 16384;
 945         info.receive = i40iw_receive_ilq;
 946         info.xmit_complete = i40iw_free_sqbuf;
 947         status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
 948         if (status)
 949                 i40iw_pr_err("ilq create fail\n");
 950         return status;
 951 }
 952
 953 /**
 954  * i40iw_initialize_ieq - create iwarp exception queue
 955  * @iwdev: iwarp device
 956  *
 957  * Return 0 if successful, otherwise return error
 958  */
 959 static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
 960 {
 961         struct i40iw_puda_rsrc_info info;
 962         enum i40iw_status_code status;
 963
 964         memset(&info, 0, sizeof(info));
 965         info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
 966         info.cq_id = 2;
 967         info.qp_id = iwdev->sc_dev.exception_lan_queue;
 968         info.count = 1;
 969         info.pd_id = 2;
 970         info.sq_size = 8192;
 971         info.rq_size = 8192;
 972         info.buf_size = 2048;
 973         info.tx_buf_cnt = 16384;
 974         status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
 975         if (status)
 976                 i40iw_pr_err("ieq create fail\n");
 977         return status;
 978 }
 979
 980 /**
 981  * i40iw_hmc_setup - create hmc objects for the device
 982  * @iwdev: iwarp device
 983  *
 984  * Set up the device private memory space for the number and size of
 985  * the hmc objects and create the objects
 986  * Return 0 if successful, otherwise return error
 987  */
 988 static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
 989 {
 990         enum i40iw_status_code status;
 991
 992         iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
 993         status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
 994         if (status)
 995                 goto exit;
 996         status = i40iw_create_hmc_objs(iwdev, true);
 997         if (status)
 998                 goto exit;
 999         iwdev->init_state = HMC_OBJS_CREATED;
1000 exit:
1001         return status;
1002 }
1003
1004 /**
1005  * i40iw_del_init_mem - deallocate memory resources
1006  * @iwdev: iwarp device
1007  */
1008 static void i40iw_del_init_mem(struct i40iw_device *iwdev)
1009 {
1010         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1011
1012         i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem);
1013         kfree(dev->hmc_info->sd_table.sd_entry);
1014         dev->hmc_info->sd_table.sd_entry = NULL;
1015         kfree(iwdev->mem_resources);
1016         iwdev->mem_resources = NULL;
1017         kfree(iwdev->ceqlist);
1018         iwdev->ceqlist = NULL;
1019         kfree(iwdev->iw_msixtbl);
1020         iwdev->iw_msixtbl = NULL;
1021         kfree(iwdev->hmc_info_mem);
1022         iwdev->hmc_info_mem = NULL;
1023 }
1024
1025 /**
1026  * i40iw_del_macip_entry - remove a mac ip address entry from the hw table
1027  * @iwdev: iwarp device
1028  * @idx: the index of the mac ip address to delete
1029  */
1030 static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
1031 {
1032         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1033         struct i40iw_cqp_request *cqp_request;
1034         struct cqp_commands_info *cqp_info;
1035         enum i40iw_status_code status = 0;
1036
1037         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1038         if (!cqp_request) {
1039                 i40iw_pr_err("cqp_request memory failed\n");
1040                 return;
1041         }
1042         cqp_info = &cqp_request->info;
1043         cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY;
1044         cqp_info->post_sq = 1;
1045         cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1046         cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1047         cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx;
1048         cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0;
1049         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1050         if (status)
1051                 i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
1052 }
1053
1054 /**
1055  * i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table
1056  * @iwdev: iwarp device
1057  * @mac_addr: pointer to mac address
1058  * @idx: the index of the mac ip address to add
1059  */
1060 static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
1061                                                          u8 *mac_addr,
1062                                                          u8 idx)
1063 {
1064         struct i40iw_local_mac_ipaddr_entry_info *info;
1065         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1066         struct i40iw_cqp_request *cqp_request;
1067         struct cqp_commands_info *cqp_info;
1068         enum i40iw_status_code status = 0;
1069
1070         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1071         if (!cqp_request) {
1072                 i40iw_pr_err("cqp_request memory failed\n");
1073                 return I40IW_ERR_NO_MEMORY;
1074         }
1075
1076         cqp_info = &cqp_request->info;
1077
1078         cqp_info->post_sq = 1;
1079         info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info;
1080         ether_addr_copy(info->mac_addr, mac_addr);
1081         info->entry_idx = idx;
1082         cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1083         cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY;
1084         cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1085         cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1086         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1087         if (status)
1088                 i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
1089         return status;
1090 }
1091
1092 /**
1093  * i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry
1094  * @iwdev: iwarp device
1095  * @mac_ip_tbl_idx: the index of the new mac ip address
1096  *
1097  * Allocate a mac ip address entry and update the mac_ip_tbl_idx
1098  * to hold the index of the newly created mac ip address
1099  * Return 0 if successful, otherwise return error
1100  */
1101 static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
1102                                                                  u16 *mac_ip_tbl_idx)
1103 {
1104         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1105         struct i40iw_cqp_request *cqp_request;
1106         struct cqp_commands_info *cqp_info;
1107         enum i40iw_status_code status = 0;
1108
1109         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1110         if (!cqp_request) {
1111                 i40iw_pr_err("cqp_request memory failed\n");
1112                 return I40IW_ERR_NO_MEMORY;
1113         }
1114
1115         /* increment refcount, because we need the cqp request ret value */
1116         atomic_inc(&cqp_request->refcount);
1117
1118         cqp_info = &cqp_request->info;
1119         cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY;
1120         cqp_info->post_sq = 1;
1121         cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1122         cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1123         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1124         if (!status)
1125                 *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
1126         else
1127                 i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail");
1128         /* decrement refcount and free the cqp request, if no longer used */
1129         i40iw_put_cqp_request(iwcqp, cqp_request);
1130         return status;
1131 }
1132
1133 /**
1134  * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
1135  * @iwdev: iwarp device
1136  * @macaddr: pointer to mac address
1137  *
1138  * Allocate a mac ip address entry and add it to the hw table
1139  * Return 0 if successful, otherwise return error
1140  */
1141 static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
1142                                                          u8 *macaddr)
1143 {
1144         enum i40iw_status_code status;
1145
1146         status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
1147         if (!status) {
1148                 status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
1149                                                     (u8)iwdev->mac_ip_table_idx);
1150                 if (status)
1151                         i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1152         }
1153         return status;
1154 }
1155
1156 /**
1157  * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
1158  * @iwdev: iwarp device
1159  */
1160 static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
1161 {
1162         struct net_device *ip_dev;
1163         struct inet6_dev *idev;
1164         struct inet6_ifaddr *ifp, *tmp;
1165         u32 local_ipaddr6[4];
1166
1167         rcu_read_lock();
1168         for_each_netdev_rcu(&init_net, ip_dev) {
1169                 if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) &&
1170                       (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
1171                      (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
1172                         idev = __in6_dev_get(ip_dev);
1173                         if (!idev) {
1174                                 i40iw_pr_err("ipv6 inet device not found\n");
1175                                 break;
1176                         }
1177                         list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
1178                                 i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr,
1179                                               rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr);
1180                                 i40iw_copy_ip_ntohl(local_ipaddr6,
1181                                                     ifp->addr.in6_u.u6_addr32);
1182                                 i40iw_manage_arp_cache(iwdev,
1183                                                        ip_dev->dev_addr,
1184                                                        local_ipaddr6,
1185                                                        false,
1186                                                        I40IW_ARP_ADD);
1187                         }
1188                 }
1189         }
1190         rcu_read_unlock();
1191 }
1192
1193 /**
1194  * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
1195  * @iwdev: iwarp device
1196  */
1197 static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
1198 {
1199         struct net_device *dev;
1200         struct in_device *idev;
1201         bool got_lock = true;
1202         u32 ip_addr;
1203
1204         if (!rtnl_trylock())
1205                 got_lock = false;
1206
1207         for_each_netdev(&init_net, dev) {
1208                 if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) &&
1209                       (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
1210                     (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
1211                         idev = in_dev_get(dev);
1212                         for_ifa(idev) {
1213                                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1214                                             "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
1215                                              rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
1216
1217                                 ip_addr = ntohl(ifa->ifa_address);
1218                                 i40iw_manage_arp_cache(iwdev,
1219                                                        dev->dev_addr,
1220                                                        &ip_addr,
1221                                                        true,
1222                                                        I40IW_ARP_ADD);
1223                         }
1224                         endfor_ifa(idev);
1225                         in_dev_put(idev);
1226                 }
1227         }
1228         if (got_lock)
1229                 rtnl_unlock();
1230 }
1231
1232 /**
1233  * i40iw_add_mac_ip - add mac and ip addresses
1234  * @iwdev: iwarp device
1235  *
1236  * Create and add a mac ip address entry to the hw table and
1237  * ipv4/ipv6 addresses to the arp cache
1238  * Return 0 if successful, otherwise return error
1239  */
1240 static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
1241 {
1242         struct net_device *netdev = iwdev->netdev;
1243         enum i40iw_status_code status;
1244
1245         status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
1246         if (status)
1247                 return status;
1248         i40iw_add_ipv4_addr(iwdev);
1249         i40iw_add_ipv6_addr(iwdev);
1250         return 0;
1251 }
1252
1253 /**
1254  * i40iw_wait_pe_ready - Check if firmware is ready
1255  * @hw: provides access to registers
1256  */
1257 static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
1258 {
1259         u32 statusfw;
1260         u32 statuscpu0;
1261         u32 statuscpu1;
1262         u32 statuscpu2;
1263         u32 retrycount = 0;
1264
1265         do {
1266                 statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
1267                 i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
1268                 statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
1269                 i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
1270                 statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
1271                 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
1272                               __LINE__, statuscpu1);
1273                 statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
1274                 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
1275                               __LINE__, statuscpu2);
1276                 if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
1277                         break;  /* SUCCESS */
1278                 mdelay(1000);
1279                 retrycount++;
1280         } while (retrycount < 14);
1281         i40iw_wr32(hw, 0xb4040, 0x4C104C5);
1282 }
1283
1284 /**
1285  * i40iw_initialize_dev - initialize device
1286  * @iwdev: iwarp device
1287  * @ldev: lan device information
1288  *
1289  * Allocate memory for the hmc objects and initialize iwdev
1290  * Return 0 if successful, otherwise clean up the resources
1291  * and return error
1292  */
1293 static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
1294                                                    struct i40e_info *ldev)
1295 {
1296         enum i40iw_status_code status;
1297         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1298         struct i40iw_device_init_info info;
1299         struct i40iw_vsi_init_info vsi_info;
1300         struct i40iw_dma_mem mem;
1301         struct i40iw_l2params l2params;
1302         u32 size;
1303         struct i40iw_vsi_stats_info stats_info;
1304         u16 last_qset = I40IW_NO_QSET;
1305         u16 qset;
1306         u32 i;
1307
1308         memset(&l2params, 0, sizeof(l2params));
1309         memset(&info, 0, sizeof(info));
1310         size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
1311                                 (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
1312         iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
1313         if (!iwdev->hmc_info_mem)
1314                 return I40IW_ERR_NO_MEMORY;
1315
1316         iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
1317         dev->hmc_info = &iwdev->hw.hmc;
1318         dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
1319         status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
1320                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1321         if (status)
1322                 goto error;
1323         info.fpm_query_buf_pa = mem.pa;
1324         info.fpm_query_buf = mem.va;
1325         status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
1326                                        I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
1327         if (status)
1328                 goto error;
1329         info.fpm_commit_buf_pa = mem.pa;
1330         info.fpm_commit_buf = mem.va;
1331         info.hmc_fn_id = ldev->fid;
1332         info.is_pf = (ldev->ftype) ? false : true;
1333         info.bar0 = ldev->hw_addr;
1334         info.hw = &iwdev->hw;
1335         info.debug_mask = debug;
1336         l2params.mss =
1337                 (ldev->params.mtu) ? ldev->params.mtu - I40IW_MTU_TO_MSS : I40IW_DEFAULT_MSS;
1338         for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
1339                 qset = ldev->params.qos.prio_qos[i].qs_handle;
1340                 l2params.qs_handle_list[i] = qset;
1341                 if (last_qset == I40IW_NO_QSET)
1342                         last_qset = qset;
1343                 else if ((qset != last_qset) && (qset != I40IW_NO_QSET))
1344                         iwdev->dcb = true;
1345         }
1346         i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb);
1347         info.exception_lan_queue = 1;
1348         info.vchnl_send = i40iw_virtchnl_send;
1349         status = i40iw_device_init(&iwdev->sc_dev, &info);
1350
1351         if (status)
1352                 goto error;
1353         memset(&vsi_info, 0, sizeof(vsi_info));
1354         vsi_info.dev = &iwdev->sc_dev;
1355         vsi_info.back_vsi = (void *)iwdev;
1356         vsi_info.params = &l2params;
1357         i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info);
1358
1359         if (dev->is_pf) {
1360                 memset(&stats_info, 0, sizeof(stats_info));
1361                 stats_info.fcn_id = ldev->fid;
1362                 stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL);
1363                 if (!stats_info.pestat) {
1364                         status = I40IW_ERR_NO_MEMORY;
1365                         goto error;
1366                 }
1367                 stats_info.stats_initialize = true;
1368                 if (stats_info.pestat)
1369                         i40iw_vsi_stats_init(&iwdev->vsi, &stats_info);
1370         }
1371         return status;
1372 error:
1373         kfree(iwdev->hmc_info_mem);
1374         iwdev->hmc_info_mem = NULL;
1375         return status;
1376 }
1377
1378 /**
1379  * i40iw_register_notifiers - register tcp ip notifiers
1380  */
1381 static void i40iw_register_notifiers(void)
1382 {
1383         if (atomic_inc_return(&i40iw_notifiers_registered) == 1) {
1384                 register_inetaddr_notifier(&i40iw_inetaddr_notifier);
1385                 register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1386                 register_netevent_notifier(&i40iw_net_notifier);
1387         }
1388 }
1389
1390 /**
1391  * i40iw_save_msix_info - copy msix vector information to iwarp device
1392  * @iwdev: iwarp device
1393  * @ldev: lan device information
1394  *
1395  * Allocate iwdev msix table and copy the ldev msix info to the table
1396  * Return 0 if successful, otherwise return error
1397  */
1398 static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
1399                                                    struct i40e_info *ldev)
1400 {
1401         struct i40e_qvlist_info *iw_qvlist;
1402         struct i40e_qv_info *iw_qvinfo;
1403         u32 ceq_idx;
1404         u32 i;
1405         u32 size;
1406
1407         iwdev->msix_count = ldev->msix_count;
1408
1409         size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
1410         size += sizeof(struct i40e_qvlist_info);
1411         size +=  sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
1412         iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
1413
1414         if (!iwdev->iw_msixtbl)
1415                 return I40IW_ERR_NO_MEMORY;
1416         iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
1417         iw_qvlist = iwdev->iw_qvlist;
1418         iw_qvinfo = iw_qvlist->qv_info;
1419         iw_qvlist->num_vectors = iwdev->msix_count;
1420         if (iwdev->msix_count <= num_online_cpus())
1421                 iwdev->msix_shared = true;
1422         for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
1423                 iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
1424                 iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
1425                 iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx;
1426                 if (i == 0) {
1427                         iw_qvinfo->aeq_idx = 0;
1428                         if (iwdev->msix_shared)
1429                                 iw_qvinfo->ceq_idx = ceq_idx++;
1430                         else
1431                                 iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
1432                 } else {
1433                         iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
1434                         iw_qvinfo->ceq_idx = ceq_idx++;
1435                 }
1436                 iw_qvinfo->itr_idx = 3;
1437                 iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
1438         }
1439         return 0;
1440 }
1441
1442 /**
1443  * i40iw_deinit_device - clean up the device resources
1444  * @iwdev: iwarp device
1445  * @reset: true if called before reset
1446  *
1447  * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
1448  * destroy the device queues and free the pble and the hmc objects
1449  */
1450 static void i40iw_deinit_device(struct i40iw_device *iwdev, bool reset)
1451 {
1452         struct i40e_info *ldev = iwdev->ldev;
1453
1454         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1455
1456         i40iw_pr_info("state = %d\n", iwdev->init_state);
1457         if (iwdev->param_wq)
1458                 destroy_workqueue(iwdev->param_wq);
1459
1460         switch (iwdev->init_state) {
1461         case RDMA_DEV_REGISTERED:
1462                 iwdev->iw_status = 0;
1463                 i40iw_port_ibevent(iwdev);
1464                 i40iw_destroy_rdma_device(iwdev->iwibdev);
1465                 /* fallthrough */
1466         case IP_ADDR_REGISTERED:
1467                 if (!reset)
1468                         i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1469                 /* fallthrough */
1470         case INET_NOTIFIER:
1471                 if (!atomic_dec_return(&i40iw_notifiers_registered)) {
1472                         unregister_netevent_notifier(&i40iw_net_notifier);
1473                         unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
1474                         unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1475                 }
1476                 /* fallthrough */
1477         case CEQ_CREATED:
1478                 i40iw_dele_ceqs(iwdev, reset);
1479                 /* fallthrough */
1480         case AEQ_CREATED:
1481                 i40iw_destroy_aeq(iwdev, reset);
1482                 /* fallthrough */
1483         case IEQ_CREATED:
1484                 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, reset);
1485                 /* fallthrough */
1486         case ILQ_CREATED:
1487                 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, reset);
1488                 /* fallthrough */
1489         case CCQ_CREATED:
1490                 i40iw_destroy_ccq(iwdev, reset);
1491                 /* fallthrough */
1492         case PBLE_CHUNK_MEM:
1493                 i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
1494                 /* fallthrough */
1495         case HMC_OBJS_CREATED:
1496                 i40iw_del_hmc_objects(dev, dev->hmc_info, true, reset);
1497                 /* fallthrough */
1498         case CQP_CREATED:
1499                 i40iw_destroy_cqp(iwdev, true);
1500                 /* fallthrough */
1501         case INITIAL_STATE:
1502                 i40iw_cleanup_cm_core(&iwdev->cm_core);
1503                 if (iwdev->vsi.pestat) {
1504                         i40iw_vsi_stats_free(&iwdev->vsi);
1505                         kfree(iwdev->vsi.pestat);
1506                 }
1507                 i40iw_del_init_mem(iwdev);
1508                 break;
1509         case INVALID_STATE:
1510                 /* fallthrough */
1511         default:
1512                 i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
1513                 break;
1514         }
1515
1516         i40iw_del_handler(i40iw_find_i40e_handler(ldev));
1517         kfree(iwdev->hdl);
1518 }
1519
1520 /**
1521  * i40iw_setup_init_state - set up the initial device struct
1522  * @hdl: handler for iwarp device - one per instance
1523  * @ldev: lan device information
1524  * @client: iwarp client information, provided during registration
1525  *
1526  * Initialize the iwarp device and its hdl information
1527  * using the ldev and client information
1528  * Return 0 if successful, otherwise return error
1529  */
1530 static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
1531                                                      struct i40e_info *ldev,
1532                                                      struct i40e_client *client)
1533 {
1534         struct i40iw_device *iwdev = &hdl->device;
1535         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1536         enum i40iw_status_code status;
1537
1538         memcpy(&hdl->ldev, ldev, sizeof(*ldev));
1539         if (resource_profile == 1)
1540                 resource_profile = 2;
1541
1542         iwdev->mpa_version = mpa_version;
1543         iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
1544             (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
1545             I40IW_HMC_PROFILE_DEFAULT;
1546         iwdev->max_rdma_vfs =
1547                 (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ?  max_rdma_vfs : 0;
1548         iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
1549         iwdev->netdev = ldev->netdev;
1550         hdl->client = client;
1551         if (!ldev->ftype)
1552                 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
1553         else
1554                 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
1555
1556         status = i40iw_save_msix_info(iwdev, ldev);
1557         if (status)
1558                 goto exit;
1559         iwdev->hw.dev_context = (void *)ldev->pcidev;
1560         iwdev->hw.hw_addr = ldev->hw_addr;
1561         status = i40iw_allocate_dma_mem(&iwdev->hw,
1562                                         &iwdev->obj_mem, 8192, 4096);
1563         if (status)
1564                 goto exit;
1565         iwdev->obj_next = iwdev->obj_mem;
1566         iwdev->push_mode = push_mode;
1567
1568         init_waitqueue_head(&iwdev->vchnl_waitq);
1569         init_waitqueue_head(&dev->vf_reqs);
1570         init_waitqueue_head(&iwdev->close_wq);
1571
1572         status = i40iw_initialize_dev(iwdev, ldev);
1573 exit:
1574         if (status) {
1575                 kfree(iwdev->iw_msixtbl);
1576                 i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
1577                 iwdev->iw_msixtbl = NULL;
1578         }
1579         return status;
1580 }
1581
1582 /**
1583  * i40iw_get_used_rsrc - determine resources used internally
1584  * @iwdev: iwarp device
1585  *
1586  * Called after internal allocations
1587  */
1588 static void i40iw_get_used_rsrc(struct i40iw_device *iwdev)
1589 {
1590         iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0);
1591         iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0);
1592         iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0);
1593         iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0);
1594 }
1595
1596 /**
1597  * i40iw_open - client interface operation open for iwarp/uda device
1598  * @ldev: lan device information
1599  * @client: iwarp client information, provided during registration
1600  *
1601  * Called by the lan driver during the processing of client register
1602  * Create device resources, set up queues, pble and hmc objects and
1603  * register the device with the ib verbs interface
1604  * Return 0 if successful, otherwise return error
1605  */
1606 static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
1607 {
1608         struct i40iw_device *iwdev;
1609         struct i40iw_sc_dev *dev;
1610         enum i40iw_status_code status;
1611         struct i40iw_handler *hdl;
1612
1613         hdl = i40iw_find_netdev(ldev->netdev);
1614         if (hdl)
1615                 return 0;
1616
1617         hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
1618         if (!hdl)
1619                 return -ENOMEM;
1620         iwdev = &hdl->device;
1621         iwdev->hdl = hdl;
1622         dev = &iwdev->sc_dev;
1623         i40iw_setup_cm_core(iwdev);
1624
1625         dev->back_dev = (void *)iwdev;
1626         iwdev->ldev = &hdl->ldev;
1627         iwdev->client = client;
1628         mutex_init(&iwdev->pbl_mutex);
1629         i40iw_add_handler(hdl);
1630
1631         do {
1632                 status = i40iw_setup_init_state(hdl, ldev, client);
1633                 if (status)
1634                         break;
1635                 iwdev->init_state = INITIAL_STATE;
1636                 if (dev->is_pf)
1637                         i40iw_wait_pe_ready(dev->hw);
1638                 status = i40iw_create_cqp(iwdev);
1639                 if (status)
1640                         break;
1641                 iwdev->init_state = CQP_CREATED;
1642                 status = i40iw_hmc_setup(iwdev);
1643                 if (status)
1644                         break;
1645                 status = i40iw_create_ccq(iwdev);
1646                 if (status)
1647                         break;
1648                 iwdev->init_state = CCQ_CREATED;
1649                 status = i40iw_initialize_ilq(iwdev);
1650                 if (status)
1651                         break;
1652                 iwdev->init_state = ILQ_CREATED;
1653                 status = i40iw_initialize_ieq(iwdev);
1654                 if (status)
1655                         break;
1656                 iwdev->init_state = IEQ_CREATED;
1657                 status = i40iw_setup_aeq(iwdev);
1658                 if (status)
1659                         break;
1660                 iwdev->init_state = AEQ_CREATED;
1661                 status = i40iw_setup_ceqs(iwdev, ldev);
1662                 if (status)
1663                         break;
1664                 iwdev->init_state = CEQ_CREATED;
1665                 status = i40iw_initialize_hw_resources(iwdev);
1666                 if (status)
1667                         break;
1668                 i40iw_get_used_rsrc(iwdev);
1669                 dev->ccq_ops->ccq_arm(dev->ccq);
1670                 status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
1671                 if (status)
1672                         break;
1673                 iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM);
1674                 i40iw_register_notifiers();
1675                 iwdev->init_state = INET_NOTIFIER;
1676                 status = i40iw_add_mac_ip(iwdev);
1677                 if (status)
1678                         break;
1679                 iwdev->init_state = IP_ADDR_REGISTERED;
1680                 if (i40iw_register_rdma_device(iwdev)) {
1681                         i40iw_pr_err("register rdma device fail\n");
1682                         break;
1683                 };
1684
1685                 iwdev->init_state = RDMA_DEV_REGISTERED;
1686                 iwdev->iw_status = 1;
1687                 i40iw_port_ibevent(iwdev);
1688                 iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM);
1689                 if(iwdev->param_wq == NULL)
1690                         break;
1691                 i40iw_pr_info("i40iw_open completed\n");
1692                 return 0;
1693         } while (0);
1694
1695         i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
1696         i40iw_deinit_device(iwdev, false);
1697         return -ERESTART;
1698 }
1699
1700 /**
1701  * i40iw_l2params_worker - worker for l2 params change
1702  * @work: work pointer for l2 params
1703  */
1704 static void i40iw_l2params_worker(struct work_struct *work)
1705 {
1706         struct l2params_work *dwork =
1707             container_of(work, struct l2params_work, work);
1708         struct i40iw_device *iwdev = dwork->iwdev;
1709
1710         i40iw_change_l2params(&iwdev->vsi, &dwork->l2params);
1711         atomic_dec(&iwdev->params_busy);
1712         kfree(work);
1713 }
1714
1715 /**
1716  * i40iw_l2param_change - handle qs handles for qos and mss change
1717  * @ldev: lan device information
1718  * @client: client for paramater change
1719  * @params: new parameters from L2
1720  */
1721 static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client,
1722                                  struct i40e_params *params)
1723 {
1724         struct i40iw_handler *hdl;
1725         struct i40iw_l2params *l2params;
1726         struct l2params_work *work;
1727         struct i40iw_device *iwdev;
1728         int i;
1729
1730         hdl = i40iw_find_i40e_handler(ldev);
1731         if (!hdl)
1732                 return;
1733
1734         iwdev = &hdl->device;
1735
1736         if (atomic_read(&iwdev->params_busy))
1737                 return;
1738
1739
1740         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1741         if (!work)
1742                 return;
1743
1744         atomic_inc(&iwdev->params_busy);
1745
1746         work->iwdev = iwdev;
1747         l2params = &work->l2params;
1748         for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++)
1749                 l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle;
1750
1751         l2params->mss = (params->mtu) ? params->mtu - I40IW_MTU_TO_MSS : iwdev->vsi.mss;
1752
1753         INIT_WORK(&work->work, i40iw_l2params_worker);
1754         queue_work(iwdev->param_wq, &work->work);
1755 }
1756
1757 /**
1758  * i40iw_close - client interface operation close for iwarp/uda device
1759  * @ldev: lan device information
1760  * @client: client to close
1761  *
1762  * Called by the lan driver during the processing of client unregister
1763  * Destroy and clean up the driver resources
1764  */
1765 static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
1766 {
1767         struct i40iw_device *iwdev;
1768         struct i40iw_handler *hdl;
1769
1770         hdl = i40iw_find_i40e_handler(ldev);
1771         if (!hdl)
1772                 return;
1773
1774         iwdev = &hdl->device;
1775         iwdev->closing = true;
1776
1777         i40iw_cm_disconnect_all(iwdev);
1778         destroy_workqueue(iwdev->virtchnl_wq);
1779         i40iw_deinit_device(iwdev, reset);
1780 }
1781
1782 /**
1783  * i40iw_vf_reset - process VF reset
1784  * @ldev: lan device information
1785  * @client: client interface instance
1786  * @vf_id: virtual function id
1787  *
1788  * Called when a VF is reset by the PF
1789  * Destroy and clean up the VF resources
1790  */
1791 static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
1792 {
1793         struct i40iw_handler *hdl;
1794         struct i40iw_sc_dev *dev;
1795         struct i40iw_hmc_fcn_info hmc_fcn_info;
1796         struct i40iw_virt_mem vf_dev_mem;
1797         struct i40iw_vfdev *tmp_vfdev;
1798         unsigned int i;
1799         unsigned long flags;
1800         struct i40iw_device *iwdev;
1801
1802         hdl = i40iw_find_i40e_handler(ldev);
1803         if (!hdl)
1804                 return;
1805
1806         dev = &hdl->device.sc_dev;
1807         iwdev = (struct i40iw_device *)dev->back_dev;
1808
1809         for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
1810                 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
1811                         continue;
1812                 /* free all resources allocated on behalf of vf */
1813                 tmp_vfdev = dev->vf_dev[i];
1814                 spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags);
1815                 dev->vf_dev[i] = NULL;
1816                 spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags);
1817                 i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
1818                 /* remove vf hmc function */
1819                 memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
1820                 hmc_fcn_info.vf_id = vf_id;
1821                 hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
1822                 hmc_fcn_info.free_fcn = true;
1823                 i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
1824                 /* free vf_dev */
1825                 vf_dev_mem.va = tmp_vfdev;
1826                 vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
1827                                         sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
1828                 i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
1829                 break;
1830         }
1831 }
1832
1833 /**
1834  * i40iw_vf_enable - enable a number of VFs
1835  * @ldev: lan device information
1836  * @client: client interface instance
1837  * @num_vfs: number of VFs for the PF
1838  *
1839  * Called when the number of VFs changes
1840  */
1841 static void i40iw_vf_enable(struct i40e_info *ldev,
1842                             struct i40e_client *client,
1843                             u32 num_vfs)
1844 {
1845         struct i40iw_handler *hdl;
1846
1847         hdl = i40iw_find_i40e_handler(ldev);
1848         if (!hdl)
1849                 return;
1850
1851         if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
1852                 hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
1853         else
1854                 hdl->device.max_enabled_vfs = num_vfs;
1855 }
1856
1857 /**
1858  * i40iw_vf_capable - check if VF capable
1859  * @ldev: lan device information
1860  * @client: client interface instance
1861  * @vf_id: virtual function id
1862  *
1863  * Return 1 if a VF slot is available or if VF is already RDMA enabled
1864  * Return 0 otherwise
1865  */
1866 static int i40iw_vf_capable(struct i40e_info *ldev,
1867                             struct i40e_client *client,
1868                             u32 vf_id)
1869 {
1870         struct i40iw_handler *hdl;
1871         struct i40iw_sc_dev *dev;
1872         unsigned int i;
1873
1874         hdl = i40iw_find_i40e_handler(ldev);
1875         if (!hdl)
1876                 return 0;
1877
1878         dev = &hdl->device.sc_dev;
1879
1880         for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
1881                 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
1882                         return 1;
1883         }
1884
1885         return 0;
1886 }
1887
1888 /**
1889  * i40iw_virtchnl_receive - receive a message through the virtual channel
1890  * @ldev: lan device information
1891  * @client: client interface instance
1892  * @vf_id: virtual function id associated with the message
1893  * @msg: message buffer pointer
1894  * @len: length of the message
1895  *
1896  * Invoke virtual channel receive operation for the given msg
1897  * Return 0 if successful, otherwise return error
1898  */
1899 static int i40iw_virtchnl_receive(struct i40e_info *ldev,
1900                                   struct i40e_client *client,
1901                                   u32 vf_id,
1902                                   u8 *msg,
1903                                   u16 len)
1904 {
1905         struct i40iw_handler *hdl;
1906         struct i40iw_sc_dev *dev;
1907         struct i40iw_device *iwdev;
1908         int ret_code = I40IW_NOT_SUPPORTED;
1909
1910         if (!len || !msg)
1911                 return I40IW_ERR_PARAM;
1912
1913         hdl = i40iw_find_i40e_handler(ldev);
1914         if (!hdl)
1915                 return I40IW_ERR_PARAM;
1916
1917         dev = &hdl->device.sc_dev;
1918         iwdev = dev->back_dev;
1919
1920         if (dev->vchnl_if.vchnl_recv) {
1921                 ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
1922                 if (!dev->is_pf) {
1923                         atomic_dec(&iwdev->vchnl_msgs);
1924                         wake_up(&iwdev->vchnl_waitq);
1925                 }
1926         }
1927         return ret_code;
1928 }
1929
1930 /**
1931  * i40iw_vf_clear_to_send - wait to send virtual channel message
1932  * @dev: iwarp device *
1933  * Wait for until virtual channel is clear
1934  * before sending the next message
1935  *
1936  * Returns false if error
1937  * Returns true if clear to send
1938  */
1939 bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
1940 {
1941         struct i40iw_device *iwdev;
1942         wait_queue_t wait;
1943
1944         iwdev = dev->back_dev;
1945
1946         if (!wq_has_sleeper(&dev->vf_reqs) &&
1947             (atomic_read(&iwdev->vchnl_msgs) == 0))
1948                 return true; /* virtual channel is clear */
1949
1950         init_wait(&wait);
1951         add_wait_queue_exclusive(&dev->vf_reqs, &wait);
1952
1953         if (!wait_event_timeout(dev->vf_reqs,
1954                                 (atomic_read(&iwdev->vchnl_msgs) == 0),
1955                                 I40IW_VCHNL_EVENT_TIMEOUT))
1956                 dev->vchnl_up = false;
1957
1958         remove_wait_queue(&dev->vf_reqs, &wait);
1959
1960         return dev->vchnl_up;
1961 }
1962
1963 /**
1964  * i40iw_virtchnl_send - send a message through the virtual channel
1965  * @dev: iwarp device
1966  * @vf_id: virtual function id associated with the message
1967  * @msg: virtual channel message buffer pointer
1968  * @len: length of the message
1969  *
1970  * Invoke virtual channel send operation for the given msg
1971  * Return 0 if successful, otherwise return error
1972  */
1973 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
1974                                                   u32 vf_id,
1975                                                   u8 *msg,
1976                                                   u16 len)
1977 {
1978         struct i40iw_device *iwdev;
1979         struct i40e_info *ldev;
1980
1981         if (!dev || !dev->back_dev)
1982                 return I40IW_ERR_BAD_PTR;
1983
1984         iwdev = dev->back_dev;
1985         ldev = iwdev->ldev;
1986
1987         if (ldev && ldev->ops && ldev->ops->virtchnl_send)
1988                 return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
1989         return I40IW_ERR_BAD_PTR;
1990 }
1991
1992 /* client interface functions */
1993 static const struct i40e_client_ops i40e_ops = {
1994         .open = i40iw_open,
1995         .close = i40iw_close,
1996         .l2_param_change = i40iw_l2param_change,
1997         .virtchnl_receive = i40iw_virtchnl_receive,
1998         .vf_reset = i40iw_vf_reset,
1999         .vf_enable = i40iw_vf_enable,
2000         .vf_capable = i40iw_vf_capable
2001 };
2002
2003 /**
2004  * i40iw_init_module - driver initialization function
2005  *
2006  * First function to call when the driver is loaded
2007  * Register the driver as i40e client and port mapper client
2008  */
2009 static int __init i40iw_init_module(void)
2010 {
2011         int ret;
2012
2013         memset(&i40iw_client, 0, sizeof(i40iw_client));
2014         i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
2015         i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
2016         i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
2017         i40iw_client.ops = &i40e_ops;
2018         memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
2019         i40iw_client.type = I40E_CLIENT_IWARP;
2020         spin_lock_init(&i40iw_handler_lock);
2021         ret = i40e_register_client(&i40iw_client);
2022         return ret;
2023 }
2024
2025 /**
2026  * i40iw_exit_module - driver exit clean up function
2027  *
2028  * The function is called just before the driver is unloaded
2029  * Unregister the driver as i40e client and port mapper client
2030  */
2031 static void __exit i40iw_exit_module(void)
2032 {
2033         i40e_unregister_client(&i40iw_client);
2034 }
2035
2036 module_init(i40iw_init_module);
2037 module_exit(i40iw_exit_module);