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
  81 static struct i40e_client i40iw_client;
  82 static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw";
  83
  84 static LIST_HEAD(i40iw_handlers);
  85 static spinlock_t i40iw_handler_lock;
  86
  87 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
  88                                                   u32 vf_id, u8 *msg, u16 len);
  89
  90 static struct notifier_block i40iw_inetaddr_notifier = {
  91         .notifier_call = i40iw_inetaddr_event
  92 };
  93
  94 static struct notifier_block i40iw_inetaddr6_notifier = {
  95         .notifier_call = i40iw_inet6addr_event
  96 };
  97
  98 static struct notifier_block i40iw_net_notifier = {
  99         .notifier_call = i40iw_net_event
 100 };
 101
 102 static struct notifier_block i40iw_netdevice_notifier = {
 103         .notifier_call = i40iw_netdevice_event
 104 };
 105
 106 /**
 107  * i40iw_find_i40e_handler - find a handler given a client info
 108  * @ldev: pointer to a client info
 109  */
 110 static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev)
 111 {
 112         struct i40iw_handler *hdl;
 113         unsigned long flags;
 114
 115         spin_lock_irqsave(&i40iw_handler_lock, flags);
 116         list_for_each_entry(hdl, &i40iw_handlers, list) {
 117                 if (hdl->ldev.netdev == ldev->netdev) {
 118                         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 119                         return hdl;
 120                 }
 121         }
 122         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 123         return NULL;
 124 }
 125
 126 /**
 127  * i40iw_find_netdev - find a handler given a netdev
 128  * @netdev: pointer to net_device
 129  */
 130 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev)
 131 {
 132         struct i40iw_handler *hdl;
 133         unsigned long flags;
 134
 135         spin_lock_irqsave(&i40iw_handler_lock, flags);
 136         list_for_each_entry(hdl, &i40iw_handlers, list) {
 137                 if (hdl->ldev.netdev == netdev) {
 138                         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 139                         return hdl;
 140                 }
 141         }
 142         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 143         return NULL;
 144 }
 145
 146 /**
 147  * i40iw_add_handler - add a handler to the list
 148  * @hdl: handler to be added to the handler list
 149  */
 150 static void i40iw_add_handler(struct i40iw_handler *hdl)
 151 {
 152         unsigned long flags;
 153
 154         spin_lock_irqsave(&i40iw_handler_lock, flags);
 155         list_add(&hdl->list, &i40iw_handlers);
 156         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 157 }
 158
 159 /**
 160  * i40iw_del_handler - delete a handler from the list
 161  * @hdl: handler to be deleted from the handler list
 162  */
 163 static int i40iw_del_handler(struct i40iw_handler *hdl)
 164 {
 165         unsigned long flags;
 166
 167         spin_lock_irqsave(&i40iw_handler_lock, flags);
 168         list_del(&hdl->list);
 169         spin_unlock_irqrestore(&i40iw_handler_lock, flags);
 170         return 0;
 171 }
 172
 173 /**
 174  * i40iw_enable_intr - set up device interrupts
 175  * @dev: hardware control device structure
 176  * @msix_id: id of the interrupt to be enabled
 177  */
 178 static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id)
 179 {
 180         u32 val;
 181
 182         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
 183                 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
 184                 (3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
 185         if (dev->is_pf)
 186                 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val);
 187         else
 188                 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val);
 189 }
 190
 191 /**
 192  * i40iw_dpc - tasklet for aeq and ceq 0
 193  * @data: iwarp device
 194  */
 195 static void i40iw_dpc(unsigned long data)
 196 {
 197         struct i40iw_device *iwdev = (struct i40iw_device *)data;
 198
 199         if (iwdev->msix_shared)
 200                 i40iw_process_ceq(iwdev, iwdev->ceqlist);
 201         i40iw_process_aeq(iwdev);
 202         i40iw_enable_intr(&iwdev->sc_dev, iwdev->iw_msixtbl[0].idx);
 203 }
 204
 205 /**
 206  * i40iw_ceq_dpc - dpc handler for CEQ
 207  * @data: data points to CEQ
 208  */
 209 static void i40iw_ceq_dpc(unsigned long data)
 210 {
 211         struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
 212         struct i40iw_device *iwdev = iwceq->iwdev;
 213
 214         i40iw_process_ceq(iwdev, iwceq);
 215         i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx);
 216 }
 217
 218 /**
 219  * i40iw_irq_handler - interrupt handler for aeq and ceq0
 220  * @irq: Interrupt request number
 221  * @data: iwarp device
 222  */
 223 static irqreturn_t i40iw_irq_handler(int irq, void *data)
 224 {
 225         struct i40iw_device *iwdev = (struct i40iw_device *)data;
 226
 227         tasklet_schedule(&iwdev->dpc_tasklet);
 228         return IRQ_HANDLED;
 229 }
 230
 231 /**
 232  * i40iw_destroy_cqp  - destroy control qp
 233  * @iwdev: iwarp device
 234  * @create_done: 1 if cqp create poll was success
 235  *
 236  * Issue destroy cqp request and
 237  * free the resources associated with the cqp
 238  */
 239 static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp)
 240 {
 241         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 242         struct i40iw_cqp *cqp = &iwdev->cqp;
 243
 244         if (free_hwcqp)
 245                 dev->cqp_ops->cqp_destroy(dev->cqp);
 246
 247         i40iw_cleanup_pending_cqp_op(iwdev);
 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         irq_set_affinity_hint(msix_vec->irq, NULL);
 274         free_irq(msix_vec->irq, dev_id);
 275 }
 276
 277 /**
 278  * i40iw_destroy_aeq - destroy aeq
 279  * @iwdev: iwarp device
 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)
 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 (iwdev->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  *
 310  * Issue a destroy ceq request and
 311  * free the resources associated with the ceq
 312  */
 313 static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
 314                               struct i40iw_ceq *iwceq)
 315 {
 316         enum i40iw_status_code status;
 317         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 318
 319         if (iwdev->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  *
 339  * Go through all of the device ceq's and for each ceq
 340  * disable the ceq interrupt and destroy the ceq
 341  */
 342 static void i40iw_dele_ceqs(struct i40iw_device *iwdev)
 343 {
 344         u32 i = 0;
 345         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 346         struct i40iw_ceq *iwceq = iwdev->ceqlist;
 347         struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
 348
 349         if (iwdev->msix_shared) {
 350                 i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
 351                 i40iw_destroy_ceq(iwdev, iwceq);
 352                 iwceq++;
 353                 i++;
 354         }
 355
 356         for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) {
 357                 i40iw_disable_irq(dev, msix_vec, (void *)iwceq);
 358                 i40iw_destroy_ceq(iwdev, iwceq);
 359         }
 360
 361         iwdev->sc_dev.ceq_valid = false;
 362 }
 363
 364 /**
 365  * i40iw_destroy_ccq - destroy control cq
 366  * @iwdev: iwarp device
 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)
 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 (!iwdev->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                 info.add_sd_cnt = 0;
 491                 status = i40iw_create_hmc_obj_type(dev, &info);
 492                 if (status) {
 493                         i40iw_pr_err("create obj type %d status = %d\n",
 494                                      iw_hmc_obj_types[i], status);
 495                         break;
 496                 }
 497         }
 498         if (!status)
 499                 return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
 500                                                                       dev->hmc_fn_id,
 501                                                                       true, true));
 502
 503         while (i) {
 504                 i--;
 505                 /* destroy the hmc objects of a given type */
 506                 i40iw_close_hmc_objects_type(dev,
 507                                              iw_hmc_obj_types[i],
 508                                              dev->hmc_info,
 509                                              is_pf,
 510                                              false);
 511         }
 512         return status;
 513 }
 514
 515 /**
 516  * i40iw_obj_aligned_mem - get aligned memory from device allocated memory
 517  * @iwdev: iwarp device
 518  * @memptr: points to the memory addresses
 519  * @size: size of memory needed
 520  * @mask: mask for the aligned memory
 521  *
 522  * Get aligned memory of the requested size and
 523  * update the memptr to point to the new aligned memory
 524  * Return 0 if successful, otherwise return no memory error
 525  */
 526 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
 527                                              struct i40iw_dma_mem *memptr,
 528                                              u32 size,
 529                                              u32 mask)
 530 {
 531         unsigned long va, newva;
 532         unsigned long extra;
 533
 534         va = (unsigned long)iwdev->obj_next.va;
 535         newva = va;
 536         if (mask)
 537                 newva = ALIGN(va, (mask + 1));
 538         extra = newva - va;
 539         memptr->va = (u8 *)va + extra;
 540         memptr->pa = iwdev->obj_next.pa + extra;
 541         memptr->size = size;
 542         if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
 543                 return I40IW_ERR_NO_MEMORY;
 544
 545         iwdev->obj_next.va = memptr->va + size;
 546         iwdev->obj_next.pa = memptr->pa + size;
 547         return 0;
 548 }
 549
 550 /**
 551  * i40iw_create_cqp - create control qp
 552  * @iwdev: iwarp device
 553  *
 554  * Return 0, if the cqp and all the resources associated with it
 555  * are successfully created, otherwise return error
 556  */
 557 static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
 558 {
 559         enum i40iw_status_code status;
 560         u32 sqsize = I40IW_CQP_SW_SQSIZE_2048;
 561         struct i40iw_dma_mem mem;
 562         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 563         struct i40iw_cqp_init_info cqp_init_info;
 564         struct i40iw_cqp *cqp = &iwdev->cqp;
 565         u16 maj_err, min_err;
 566         int i;
 567
 568         cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL);
 569         if (!cqp->cqp_requests)
 570                 return I40IW_ERR_NO_MEMORY;
 571         cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL);
 572         if (!cqp->scratch_array) {
 573                 kfree(cqp->cqp_requests);
 574                 return I40IW_ERR_NO_MEMORY;
 575         }
 576         dev->cqp = &cqp->sc_cqp;
 577         dev->cqp->dev = dev;
 578         memset(&cqp_init_info, 0, sizeof(cqp_init_info));
 579         status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq,
 580                                         (sizeof(struct i40iw_cqp_sq_wqe) * sqsize),
 581                                         I40IW_CQP_ALIGNMENT);
 582         if (status)
 583                 goto exit;
 584         status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
 585                                        I40IW_HOST_CTX_ALIGNMENT_MASK);
 586         if (status)
 587                 goto exit;
 588         dev->cqp->host_ctx_pa = mem.pa;
 589         dev->cqp->host_ctx = mem.va;
 590         /* populate the cqp init info */
 591         cqp_init_info.dev = dev;
 592         cqp_init_info.sq_size = sqsize;
 593         cqp_init_info.sq = cqp->sq.va;
 594         cqp_init_info.sq_pa = cqp->sq.pa;
 595         cqp_init_info.host_ctx_pa = mem.pa;
 596         cqp_init_info.host_ctx = mem.va;
 597         cqp_init_info.hmc_profile = iwdev->resource_profile;
 598         cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs;
 599         cqp_init_info.scratch_array = cqp->scratch_array;
 600         status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info);
 601         if (status) {
 602                 i40iw_pr_err("cqp init status %d\n", status);
 603                 goto exit;
 604         }
 605         status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err);
 606         if (status) {
 607                 i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
 608                              status, maj_err, min_err);
 609                 goto exit;
 610         }
 611         spin_lock_init(&cqp->req_lock);
 612         INIT_LIST_HEAD(&cqp->cqp_avail_reqs);
 613         INIT_LIST_HEAD(&cqp->cqp_pending_reqs);
 614         /* init the waitq of the cqp_requests and add them to the list */
 615         for (i = 0; i < sqsize; i++) {
 616                 init_waitqueue_head(&cqp->cqp_requests[i].waitq);
 617                 list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs);
 618         }
 619         return 0;
 620 exit:
 621         /* clean up the created resources */
 622         i40iw_destroy_cqp(iwdev, false);
 623         return status;
 624 }
 625
 626 /**
 627  * i40iw_create_ccq - create control cq
 628  * @iwdev: iwarp device
 629  *
 630  * Return 0, if the ccq and the resources associated with it
 631  * are successfully created, otherwise return error
 632  */
 633 static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
 634 {
 635         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 636         struct i40iw_dma_mem mem;
 637         enum i40iw_status_code status;
 638         struct i40iw_ccq_init_info info;
 639         struct i40iw_ccq *ccq = &iwdev->ccq;
 640
 641         memset(&info, 0, sizeof(info));
 642         dev->ccq = &ccq->sc_cq;
 643         dev->ccq->dev = dev;
 644         info.dev = dev;
 645         ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area);
 646         ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE;
 647         status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq,
 648                                         ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT);
 649         if (status)
 650                 goto exit;
 651         status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
 652                                        I40IW_SHADOWAREA_MASK);
 653         if (status)
 654                 goto exit;
 655         ccq->sc_cq.back_cq = (void *)ccq;
 656         /* populate the ccq init info */
 657         info.cq_base = ccq->mem_cq.va;
 658         info.cq_pa = ccq->mem_cq.pa;
 659         info.num_elem = IW_CCQ_SIZE;
 660         info.shadow_area = mem.va;
 661         info.shadow_area_pa = mem.pa;
 662         info.ceqe_mask = false;
 663         info.ceq_id_valid = true;
 664         info.shadow_read_threshold = 16;
 665         status = dev->ccq_ops->ccq_init(dev->ccq, &info);
 666         if (!status)
 667                 status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
 668 exit:
 669         if (status)
 670                 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
 671         return status;
 672 }
 673
 674 /**
 675  * i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq
 676  * @iwdev: iwarp device
 677  * @msix_vec: interrupt vector information
 678  * @iwceq: ceq associated with the vector
 679  * @ceq_id: the id number of the iwceq
 680  *
 681  * Allocate interrupt resources and enable irq handling
 682  * Return 0 if successful, otherwise return error
 683  */
 684 static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
 685                                                          struct i40iw_ceq *iwceq,
 686                                                          u32 ceq_id,
 687                                                          struct i40iw_msix_vector *msix_vec)
 688 {
 689         enum i40iw_status_code status;
 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(&msix_vec->mask);
 700         cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
 701         irq_set_affinity_hint(msix_vec->irq, &msix_vec->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);
 814                         break;
 815                 }
 816                 i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
 817                 iwdev->ceqs_count++;
 818         }
 819 exit:
 820         if (status && !iwdev->ceqs_count) {
 821                 kfree(iwdev->ceqlist);
 822                 iwdev->ceqlist = NULL;
 823                 return status;
 824         } else {
 825                 iwdev->sc_dev.ceq_valid = true;
 826                 return 0;
 827         }
 828
 829 }
 830
 831 /**
 832  * i40iw_configure_aeq_vector - set up the msix vector for aeq
 833  * @iwdev: iwarp device
 834  *
 835  * Allocate interrupt resources and enable irq handling
 836  * Return 0 if successful, otherwise return error
 837  */
 838 static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
 839 {
 840         struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
 841         u32 ret = 0;
 842
 843         if (!iwdev->msix_shared) {
 844                 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
 845                 ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev);
 846         }
 847         if (ret) {
 848                 i40iw_pr_err("aeq irq config fail\n");
 849                 return I40IW_ERR_CONFIG;
 850         }
 851
 852         return 0;
 853 }
 854
 855 /**
 856  * i40iw_create_aeq - create async event queue
 857  * @iwdev: iwarp device
 858  *
 859  * Return 0, if the aeq and the resources associated with it
 860  * are successfully created, otherwise return error
 861  */
 862 static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
 863 {
 864         enum i40iw_status_code status;
 865         struct i40iw_aeq_init_info info;
 866         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 867         struct i40iw_aeq *aeq = &iwdev->aeq;
 868         u64 scratch = 0;
 869         u32 aeq_size;
 870
 871         aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt +
 872                 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
 873         memset(&info, 0, sizeof(info));
 874         aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size;
 875         status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size,
 876                                         I40IW_AEQ_ALIGNMENT);
 877         if (status)
 878                 goto exit;
 879
 880         info.aeqe_base = aeq->mem.va;
 881         info.aeq_elem_pa = aeq->mem.pa;
 882         info.elem_cnt = aeq_size;
 883         info.dev = dev;
 884         status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
 885         if (status)
 886                 goto exit;
 887         status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
 888         if (!status)
 889                 status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
 890 exit:
 891         if (status)
 892                 i40iw_free_dma_mem(dev->hw, &aeq->mem);
 893         return status;
 894 }
 895
 896 /**
 897  * i40iw_setup_aeq - set up the device aeq
 898  * @iwdev: iwarp device
 899  *
 900  * Create the aeq and configure its msix interrupt vector
 901  * Return 0 if successful, otherwise return error
 902  */
 903 static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
 904 {
 905         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 906         enum i40iw_status_code status;
 907
 908         status = i40iw_create_aeq(iwdev);
 909         if (status)
 910                 return status;
 911
 912         status = i40iw_configure_aeq_vector(iwdev);
 913         if (status) {
 914                 i40iw_destroy_aeq(iwdev);
 915                 return status;
 916         }
 917
 918         if (!iwdev->msix_shared)
 919                 i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
 920         return 0;
 921 }
 922
 923 /**
 924  * i40iw_initialize_ilq - create iwarp local queue for cm
 925  * @iwdev: iwarp device
 926  *
 927  * Return 0 if successful, otherwise return error
 928  */
 929 static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
 930 {
 931         struct i40iw_puda_rsrc_info info;
 932         enum i40iw_status_code status;
 933
 934         memset(&info, 0, sizeof(info));
 935         info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
 936         info.cq_id = 1;
 937         info.qp_id = 0;
 938         info.count = 1;
 939         info.pd_id = 1;
 940         info.sq_size = 8192;
 941         info.rq_size = 8192;
 942         info.buf_size = 1024;
 943         info.tx_buf_cnt = 16384;
 944         info.receive = i40iw_receive_ilq;
 945         info.xmit_complete = i40iw_free_sqbuf;
 946         status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
 947         if (status)
 948                 i40iw_pr_err("ilq create fail\n");
 949         return status;
 950 }
 951
 952 /**
 953  * i40iw_initialize_ieq - create iwarp exception queue
 954  * @iwdev: iwarp device
 955  *
 956  * Return 0 if successful, otherwise return error
 957  */
 958 static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
 959 {
 960         struct i40iw_puda_rsrc_info info;
 961         enum i40iw_status_code status;
 962
 963         memset(&info, 0, sizeof(info));
 964         info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
 965         info.cq_id = 2;
 966         info.qp_id = iwdev->vsi.exception_lan_queue;
 967         info.count = 1;
 968         info.pd_id = 2;
 969         info.sq_size = 8192;
 970         info.rq_size = 8192;
 971         info.buf_size = iwdev->vsi.mtu + VLAN_ETH_HLEN;
 972         info.tx_buf_cnt = 4096;
 973         status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
 974         if (status)
 975                 i40iw_pr_err("ieq create fail\n");
 976         return status;
 977 }
 978
 979 /**
 980  * i40iw_reinitialize_ieq - destroy and re-create ieq
 981  * @dev: iwarp device
 982  */
 983 void i40iw_reinitialize_ieq(struct i40iw_sc_dev *dev)
 984 {
 985         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 986
 987         i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, false);
 988         if (i40iw_initialize_ieq(iwdev)) {
 989                 iwdev->reset = true;
 990                 i40iw_request_reset(iwdev);
 991         }
 992 }
 993
 994 /**
 995  * i40iw_hmc_setup - create hmc objects for the device
 996  * @iwdev: iwarp device
 997  *
 998  * Set up the device private memory space for the number and size of
 999  * the hmc objects and create the objects
1000  * Return 0 if successful, otherwise return error
1001  */
1002 static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
1003 {
1004         enum i40iw_status_code status;
1005
1006         iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
1007         status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
1008         if (status)
1009                 goto exit;
1010         status = i40iw_create_hmc_objs(iwdev, true);
1011         if (status)
1012                 goto exit;
1013         iwdev->init_state = HMC_OBJS_CREATED;
1014 exit:
1015         return status;
1016 }
1017
1018 /**
1019  * i40iw_del_init_mem - deallocate memory resources
1020  * @iwdev: iwarp device
1021  */
1022 static void i40iw_del_init_mem(struct i40iw_device *iwdev)
1023 {
1024         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1025
1026         i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem);
1027         kfree(dev->hmc_info->sd_table.sd_entry);
1028         dev->hmc_info->sd_table.sd_entry = NULL;
1029         kfree(iwdev->mem_resources);
1030         iwdev->mem_resources = NULL;
1031         kfree(iwdev->ceqlist);
1032         iwdev->ceqlist = NULL;
1033         kfree(iwdev->iw_msixtbl);
1034         iwdev->iw_msixtbl = NULL;
1035         kfree(iwdev->hmc_info_mem);
1036         iwdev->hmc_info_mem = NULL;
1037 }
1038
1039 /**
1040  * i40iw_del_macip_entry - remove a mac ip address entry from the hw table
1041  * @iwdev: iwarp device
1042  * @idx: the index of the mac ip address to delete
1043  */
1044 static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
1045 {
1046         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1047         struct i40iw_cqp_request *cqp_request;
1048         struct cqp_commands_info *cqp_info;
1049         enum i40iw_status_code status = 0;
1050
1051         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1052         if (!cqp_request) {
1053                 i40iw_pr_err("cqp_request memory failed\n");
1054                 return;
1055         }
1056         cqp_info = &cqp_request->info;
1057         cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY;
1058         cqp_info->post_sq = 1;
1059         cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1060         cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1061         cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx;
1062         cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0;
1063         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1064         if (status)
1065                 i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
1066 }
1067
1068 /**
1069  * i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table
1070  * @iwdev: iwarp device
1071  * @mac_addr: pointer to mac address
1072  * @idx: the index of the mac ip address to add
1073  */
1074 static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
1075                                                          u8 *mac_addr,
1076                                                          u8 idx)
1077 {
1078         struct i40iw_local_mac_ipaddr_entry_info *info;
1079         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1080         struct i40iw_cqp_request *cqp_request;
1081         struct cqp_commands_info *cqp_info;
1082         enum i40iw_status_code status = 0;
1083
1084         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1085         if (!cqp_request) {
1086                 i40iw_pr_err("cqp_request memory failed\n");
1087                 return I40IW_ERR_NO_MEMORY;
1088         }
1089
1090         cqp_info = &cqp_request->info;
1091
1092         cqp_info->post_sq = 1;
1093         info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info;
1094         ether_addr_copy(info->mac_addr, mac_addr);
1095         info->entry_idx = idx;
1096         cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1097         cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY;
1098         cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1099         cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1100         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1101         if (status)
1102                 i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
1103         return status;
1104 }
1105
1106 /**
1107  * i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry
1108  * @iwdev: iwarp device
1109  * @mac_ip_tbl_idx: the index of the new mac ip address
1110  *
1111  * Allocate a mac ip address entry and update the mac_ip_tbl_idx
1112  * to hold the index of the newly created mac ip address
1113  * Return 0 if successful, otherwise return error
1114  */
1115 static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
1116                                                                  u16 *mac_ip_tbl_idx)
1117 {
1118         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1119         struct i40iw_cqp_request *cqp_request;
1120         struct cqp_commands_info *cqp_info;
1121         enum i40iw_status_code status = 0;
1122
1123         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1124         if (!cqp_request) {
1125                 i40iw_pr_err("cqp_request memory failed\n");
1126                 return I40IW_ERR_NO_MEMORY;
1127         }
1128
1129         /* increment refcount, because we need the cqp request ret value */
1130         atomic_inc(&cqp_request->refcount);
1131
1132         cqp_info = &cqp_request->info;
1133         cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY;
1134         cqp_info->post_sq = 1;
1135         cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1136         cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1137         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1138         if (!status)
1139                 *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
1140         else
1141                 i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail");
1142         /* decrement refcount and free the cqp request, if no longer used */
1143         i40iw_put_cqp_request(iwcqp, cqp_request);
1144         return status;
1145 }
1146
1147 /**
1148  * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
1149  * @iwdev: iwarp device
1150  * @macaddr: pointer to mac address
1151  *
1152  * Allocate a mac ip address entry and add it to the hw table
1153  * Return 0 if successful, otherwise return error
1154  */
1155 static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
1156                                                          u8 *macaddr)
1157 {
1158         enum i40iw_status_code status;
1159
1160         status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
1161         if (!status) {
1162                 status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
1163                                                     (u8)iwdev->mac_ip_table_idx);
1164                 if (status)
1165                         i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1166         }
1167         return status;
1168 }
1169
1170 /**
1171  * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
1172  * @iwdev: iwarp device
1173  */
1174 static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
1175 {
1176         struct net_device *ip_dev;
1177         struct inet6_dev *idev;
1178         struct inet6_ifaddr *ifp, *tmp;
1179         u32 local_ipaddr6[4];
1180
1181         rcu_read_lock();
1182         for_each_netdev_rcu(&init_net, ip_dev) {
1183                 if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) &&
1184                       (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
1185                      (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
1186                         idev = __in6_dev_get(ip_dev);
1187                         if (!idev) {
1188                                 i40iw_pr_err("ipv6 inet device not found\n");
1189                                 break;
1190                         }
1191                         list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
1192                                 i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr,
1193                                               rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr);
1194                                 i40iw_copy_ip_ntohl(local_ipaddr6,
1195                                                     ifp->addr.in6_u.u6_addr32);
1196                                 i40iw_manage_arp_cache(iwdev,
1197                                                        ip_dev->dev_addr,
1198                                                        local_ipaddr6,
1199                                                        false,
1200                                                        I40IW_ARP_ADD);
1201                         }
1202                 }
1203         }
1204         rcu_read_unlock();
1205 }
1206
1207 /**
1208  * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
1209  * @iwdev: iwarp device
1210  */
1211 static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
1212 {
1213         struct net_device *dev;
1214         struct in_device *idev;
1215         bool got_lock = true;
1216         u32 ip_addr;
1217
1218         if (!rtnl_trylock())
1219                 got_lock = false;
1220
1221         for_each_netdev(&init_net, dev) {
1222                 if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) &&
1223                       (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
1224                     (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
1225                         const struct in_ifaddr *ifa;
1226
1227                         idev = in_dev_get(dev);
1228                         in_dev_for_each_ifa_rtnl(ifa, idev) {
1229                                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1230                                             "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
1231                                              rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
1232
1233                                 ip_addr = ntohl(ifa->ifa_address);
1234                                 i40iw_manage_arp_cache(iwdev,
1235                                                        dev->dev_addr,
1236                                                        &ip_addr,
1237                                                        true,
1238                                                        I40IW_ARP_ADD);
1239                         }
1240
1241                         in_dev_put(idev);
1242                 }
1243         }
1244         if (got_lock)
1245                 rtnl_unlock();
1246 }
1247
1248 /**
1249  * i40iw_add_mac_ip - add mac and ip addresses
1250  * @iwdev: iwarp device
1251  *
1252  * Create and add a mac ip address entry to the hw table and
1253  * ipv4/ipv6 addresses to the arp cache
1254  * Return 0 if successful, otherwise return error
1255  */
1256 static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
1257 {
1258         struct net_device *netdev = iwdev->netdev;
1259         enum i40iw_status_code status;
1260
1261         status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
1262         if (status)
1263                 return status;
1264         i40iw_add_ipv4_addr(iwdev);
1265         i40iw_add_ipv6_addr(iwdev);
1266         return 0;
1267 }
1268
1269 /**
1270  * i40iw_wait_pe_ready - Check if firmware is ready
1271  * @hw: provides access to registers
1272  */
1273 static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
1274 {
1275         u32 statusfw;
1276         u32 statuscpu0;
1277         u32 statuscpu1;
1278         u32 statuscpu2;
1279         u32 retrycount = 0;
1280
1281         do {
1282                 statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
1283                 i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
1284                 statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
1285                 i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
1286                 statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
1287                 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
1288                               __LINE__, statuscpu1);
1289                 statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
1290                 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
1291                               __LINE__, statuscpu2);
1292                 if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
1293                         break;  /* SUCCESS */
1294                 msleep(1000);
1295                 retrycount++;
1296         } while (retrycount < 14);
1297         i40iw_wr32(hw, 0xb4040, 0x4C104C5);
1298 }
1299
1300 /**
1301  * i40iw_initialize_dev - initialize device
1302  * @iwdev: iwarp device
1303  * @ldev: lan device information
1304  *
1305  * Allocate memory for the hmc objects and initialize iwdev
1306  * Return 0 if successful, otherwise clean up the resources
1307  * and return error
1308  */
1309 static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
1310                                                    struct i40e_info *ldev)
1311 {
1312         enum i40iw_status_code status;
1313         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1314         struct i40iw_device_init_info info;
1315         struct i40iw_vsi_init_info vsi_info;
1316         struct i40iw_dma_mem mem;
1317         struct i40iw_l2params l2params;
1318         u32 size;
1319         struct i40iw_vsi_stats_info stats_info;
1320         u16 last_qset = I40IW_NO_QSET;
1321         u16 qset;
1322         u32 i;
1323
1324         memset(&l2params, 0, sizeof(l2params));
1325         memset(&info, 0, sizeof(info));
1326         size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
1327                                 (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
1328         iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
1329         if (!iwdev->hmc_info_mem)
1330                 return I40IW_ERR_NO_MEMORY;
1331
1332         iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
1333         dev->hmc_info = &iwdev->hw.hmc;
1334         dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
1335         status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
1336                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1337         if (status)
1338                 goto error;
1339         info.fpm_query_buf_pa = mem.pa;
1340         info.fpm_query_buf = mem.va;
1341         status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
1342                                        I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
1343         if (status)
1344                 goto error;
1345         info.fpm_commit_buf_pa = mem.pa;
1346         info.fpm_commit_buf = mem.va;
1347         info.hmc_fn_id = ldev->fid;
1348         info.is_pf = (ldev->ftype) ? false : true;
1349         info.bar0 = ldev->hw_addr;
1350         info.hw = &iwdev->hw;
1351         info.debug_mask = debug;
1352         l2params.mtu =
1353                 (ldev->params.mtu) ? ldev->params.mtu : I40IW_DEFAULT_MTU;
1354         for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
1355                 qset = ldev->params.qos.prio_qos[i].qs_handle;
1356                 l2params.qs_handle_list[i] = qset;
1357                 if (last_qset == I40IW_NO_QSET)
1358                         last_qset = qset;
1359                 else if ((qset != last_qset) && (qset != I40IW_NO_QSET))
1360                         iwdev->dcb = true;
1361         }
1362         i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb);
1363         info.vchnl_send = i40iw_virtchnl_send;
1364         status = i40iw_device_init(&iwdev->sc_dev, &info);
1365
1366         if (status)
1367                 goto error;
1368         memset(&vsi_info, 0, sizeof(vsi_info));
1369         vsi_info.dev = &iwdev->sc_dev;
1370         vsi_info.back_vsi = (void *)iwdev;
1371         vsi_info.params = &l2params;
1372         vsi_info.exception_lan_queue = 1;
1373         i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info);
1374
1375         if (dev->is_pf) {
1376                 memset(&stats_info, 0, sizeof(stats_info));
1377                 stats_info.fcn_id = ldev->fid;
1378                 stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL);
1379                 if (!stats_info.pestat) {
1380                         status = I40IW_ERR_NO_MEMORY;
1381                         goto error;
1382                 }
1383                 stats_info.stats_initialize = true;
1384                 if (stats_info.pestat)
1385                         i40iw_vsi_stats_init(&iwdev->vsi, &stats_info);
1386         }
1387         return status;
1388 error:
1389         kfree(iwdev->hmc_info_mem);
1390         iwdev->hmc_info_mem = NULL;
1391         return status;
1392 }
1393
1394 /**
1395  * i40iw_register_notifiers - register tcp ip notifiers
1396  */
1397 static void i40iw_register_notifiers(void)
1398 {
1399         register_inetaddr_notifier(&i40iw_inetaddr_notifier);
1400         register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1401         register_netevent_notifier(&i40iw_net_notifier);
1402         register_netdevice_notifier(&i40iw_netdevice_notifier);
1403 }
1404
1405 /**
1406  * i40iw_unregister_notifiers - unregister tcp ip notifiers
1407  */
1408
1409 static void i40iw_unregister_notifiers(void)
1410 {
1411         unregister_netevent_notifier(&i40iw_net_notifier);
1412         unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
1413         unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1414         unregister_netdevice_notifier(&i40iw_netdevice_notifier);
1415 }
1416
1417 /**
1418  * i40iw_save_msix_info - copy msix vector information to iwarp device
1419  * @iwdev: iwarp device
1420  * @ldev: lan device information
1421  *
1422  * Allocate iwdev msix table and copy the ldev msix info to the table
1423  * Return 0 if successful, otherwise return error
1424  */
1425 static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
1426                                                    struct i40e_info *ldev)
1427 {
1428         struct i40e_qvlist_info *iw_qvlist;
1429         struct i40e_qv_info *iw_qvinfo;
1430         u32 ceq_idx;
1431         u32 i;
1432         u32 size;
1433
1434         if (!ldev->msix_count) {
1435                 i40iw_pr_err("No MSI-X vectors\n");
1436                 return I40IW_ERR_CONFIG;
1437         }
1438
1439         iwdev->msix_count = ldev->msix_count;
1440
1441         size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
1442         size += sizeof(struct i40e_qvlist_info);
1443         size +=  sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
1444         iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
1445
1446         if (!iwdev->iw_msixtbl)
1447                 return I40IW_ERR_NO_MEMORY;
1448         iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
1449         iw_qvlist = iwdev->iw_qvlist;
1450         iw_qvinfo = iw_qvlist->qv_info;
1451         iw_qvlist->num_vectors = iwdev->msix_count;
1452         if (iwdev->msix_count <= num_online_cpus())
1453                 iwdev->msix_shared = true;
1454         for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
1455                 iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
1456                 iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
1457                 iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx;
1458                 if (i == 0) {
1459                         iw_qvinfo->aeq_idx = 0;
1460                         if (iwdev->msix_shared)
1461                                 iw_qvinfo->ceq_idx = ceq_idx++;
1462                         else
1463                                 iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
1464                 } else {
1465                         iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
1466                         iw_qvinfo->ceq_idx = ceq_idx++;
1467                 }
1468                 iw_qvinfo->itr_idx = 3;
1469                 iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
1470         }
1471         return 0;
1472 }
1473
1474 /**
1475  * i40iw_deinit_device - clean up the device resources
1476  * @iwdev: iwarp device
1477  *
1478  * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
1479  * destroy the device queues and free the pble and the hmc objects
1480  */
1481 static void i40iw_deinit_device(struct i40iw_device *iwdev)
1482 {
1483         struct i40e_info *ldev = iwdev->ldev;
1484
1485         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1486
1487         i40iw_pr_info("state = %d\n", iwdev->init_state);
1488         if (iwdev->param_wq)
1489                 destroy_workqueue(iwdev->param_wq);
1490
1491         switch (iwdev->init_state) {
1492         case RDMA_DEV_REGISTERED:
1493                 iwdev->iw_status = 0;
1494                 i40iw_port_ibevent(iwdev);
1495                 i40iw_destroy_rdma_device(iwdev->iwibdev);
1496                 /* fallthrough */
1497         case IP_ADDR_REGISTERED:
1498                 if (!iwdev->reset)
1499                         i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1500                 /* fallthrough */
1501                 /* fallthrough */
1502         case PBLE_CHUNK_MEM:
1503                 i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
1504                 /* fallthrough */
1505         case CEQ_CREATED:
1506                 i40iw_dele_ceqs(iwdev);
1507                 /* fallthrough */
1508         case AEQ_CREATED:
1509                 i40iw_destroy_aeq(iwdev);
1510                 /* fallthrough */
1511         case IEQ_CREATED:
1512                 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, iwdev->reset);
1513                 /* fallthrough */
1514         case ILQ_CREATED:
1515                 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, iwdev->reset);
1516                 /* fallthrough */
1517         case CCQ_CREATED:
1518                 i40iw_destroy_ccq(iwdev);
1519                 /* fallthrough */
1520         case HMC_OBJS_CREATED:
1521                 i40iw_del_hmc_objects(dev, dev->hmc_info, true, iwdev->reset);
1522                 /* fallthrough */
1523         case CQP_CREATED:
1524                 i40iw_destroy_cqp(iwdev, true);
1525                 /* fallthrough */
1526         case INITIAL_STATE:
1527                 i40iw_cleanup_cm_core(&iwdev->cm_core);
1528                 if (iwdev->vsi.pestat) {
1529                         i40iw_vsi_stats_free(&iwdev->vsi);
1530                         kfree(iwdev->vsi.pestat);
1531                 }
1532                 i40iw_del_init_mem(iwdev);
1533                 break;
1534         case INVALID_STATE:
1535                 /* fallthrough */
1536         default:
1537                 i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
1538                 break;
1539         }
1540
1541         i40iw_del_handler(i40iw_find_i40e_handler(ldev));
1542         kfree(iwdev->hdl);
1543 }
1544
1545 /**
1546  * i40iw_setup_init_state - set up the initial device struct
1547  * @hdl: handler for iwarp device - one per instance
1548  * @ldev: lan device information
1549  * @client: iwarp client information, provided during registration
1550  *
1551  * Initialize the iwarp device and its hdl information
1552  * using the ldev and client information
1553  * Return 0 if successful, otherwise return error
1554  */
1555 static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
1556                                                      struct i40e_info *ldev,
1557                                                      struct i40e_client *client)
1558 {
1559         struct i40iw_device *iwdev = &hdl->device;
1560         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1561         enum i40iw_status_code status;
1562
1563         memcpy(&hdl->ldev, ldev, sizeof(*ldev));
1564
1565         iwdev->mpa_version = mpa_version;
1566         iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
1567             (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
1568             I40IW_HMC_PROFILE_DEFAULT;
1569         iwdev->max_rdma_vfs =
1570                 (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ?  max_rdma_vfs : 0;
1571         iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
1572         iwdev->netdev = ldev->netdev;
1573         hdl->client = client;
1574         if (!ldev->ftype)
1575                 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
1576         else
1577                 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
1578
1579         status = i40iw_save_msix_info(iwdev, ldev);
1580         if (status)
1581                 return status;
1582         iwdev->hw.dev_context = (void *)ldev->pcidev;
1583         iwdev->hw.hw_addr = ldev->hw_addr;
1584         status = i40iw_allocate_dma_mem(&iwdev->hw,
1585                                         &iwdev->obj_mem, 8192, 4096);
1586         if (status)
1587                 goto exit;
1588         iwdev->obj_next = iwdev->obj_mem;
1589         iwdev->push_mode = push_mode;
1590
1591         init_waitqueue_head(&iwdev->vchnl_waitq);
1592         init_waitqueue_head(&dev->vf_reqs);
1593         init_waitqueue_head(&iwdev->close_wq);
1594
1595         status = i40iw_initialize_dev(iwdev, ldev);
1596 exit:
1597         if (status) {
1598                 kfree(iwdev->iw_msixtbl);
1599                 i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
1600                 iwdev->iw_msixtbl = NULL;
1601         }
1602         return status;
1603 }
1604
1605 /**
1606  * i40iw_get_used_rsrc - determine resources used internally
1607  * @iwdev: iwarp device
1608  *
1609  * Called after internal allocations
1610  */
1611 static void i40iw_get_used_rsrc(struct i40iw_device *iwdev)
1612 {
1613         iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0);
1614         iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0);
1615         iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0);
1616         iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0);
1617 }
1618
1619 /**
1620  * i40iw_open - client interface operation open for iwarp/uda device
1621  * @ldev: lan device information
1622  * @client: iwarp client information, provided during registration
1623  *
1624  * Called by the lan driver during the processing of client register
1625  * Create device resources, set up queues, pble and hmc objects and
1626  * register the device with the ib verbs interface
1627  * Return 0 if successful, otherwise return error
1628  */
1629 static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
1630 {
1631         struct i40iw_device *iwdev;
1632         struct i40iw_sc_dev *dev;
1633         enum i40iw_status_code status;
1634         struct i40iw_handler *hdl;
1635
1636         hdl = i40iw_find_netdev(ldev->netdev);
1637         if (hdl)
1638                 return 0;
1639
1640         hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
1641         if (!hdl)
1642                 return -ENOMEM;
1643         iwdev = &hdl->device;
1644         iwdev->hdl = hdl;
1645         dev = &iwdev->sc_dev;
1646         if (i40iw_setup_cm_core(iwdev)) {
1647                 kfree(iwdev->hdl);
1648                 return -ENOMEM;
1649         }
1650
1651         dev->back_dev = (void *)iwdev;
1652         iwdev->ldev = &hdl->ldev;
1653         iwdev->client = client;
1654         mutex_init(&iwdev->pbl_mutex);
1655         i40iw_add_handler(hdl);
1656
1657         do {
1658                 status = i40iw_setup_init_state(hdl, ldev, client);
1659                 if (status)
1660                         break;
1661                 iwdev->init_state = INITIAL_STATE;
1662                 if (dev->is_pf)
1663                         i40iw_wait_pe_ready(dev->hw);
1664                 status = i40iw_create_cqp(iwdev);
1665                 if (status)
1666                         break;
1667                 iwdev->init_state = CQP_CREATED;
1668                 status = i40iw_hmc_setup(iwdev);
1669                 if (status)
1670                         break;
1671                 status = i40iw_create_ccq(iwdev);
1672                 if (status)
1673                         break;
1674                 iwdev->init_state = CCQ_CREATED;
1675                 status = i40iw_initialize_ilq(iwdev);
1676                 if (status)
1677                         break;
1678                 iwdev->init_state = ILQ_CREATED;
1679                 status = i40iw_initialize_ieq(iwdev);
1680                 if (status)
1681                         break;
1682                 iwdev->init_state = IEQ_CREATED;
1683                 status = i40iw_setup_aeq(iwdev);
1684                 if (status)
1685                         break;
1686                 iwdev->init_state = AEQ_CREATED;
1687                 status = i40iw_setup_ceqs(iwdev, ldev);
1688                 if (status)
1689                         break;
1690                 iwdev->init_state = CEQ_CREATED;
1691                 status = i40iw_initialize_hw_resources(iwdev);
1692                 if (status)
1693                         break;
1694                 i40iw_get_used_rsrc(iwdev);
1695                 dev->ccq_ops->ccq_arm(dev->ccq);
1696                 status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
1697                 if (status)
1698                         break;
1699                 iwdev->init_state = PBLE_CHUNK_MEM;
1700                 iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM);
1701                 status = i40iw_add_mac_ip(iwdev);
1702                 if (status)
1703                         break;
1704                 iwdev->init_state = IP_ADDR_REGISTERED;
1705                 if (i40iw_register_rdma_device(iwdev)) {
1706                         i40iw_pr_err("register rdma device fail\n");
1707                         break;
1708                 };
1709
1710                 iwdev->init_state = RDMA_DEV_REGISTERED;
1711                 iwdev->iw_status = 1;
1712                 i40iw_port_ibevent(iwdev);
1713                 iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM);
1714                 if(iwdev->param_wq == NULL)
1715                         break;
1716                 i40iw_pr_info("i40iw_open completed\n");
1717                 return 0;
1718         } while (0);
1719
1720         i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
1721         i40iw_deinit_device(iwdev);
1722         return -ERESTART;
1723 }
1724
1725 /**
1726  * i40iw_l2params_worker - worker for l2 params change
1727  * @work: work pointer for l2 params
1728  */
1729 static void i40iw_l2params_worker(struct work_struct *work)
1730 {
1731         struct l2params_work *dwork =
1732             container_of(work, struct l2params_work, work);
1733         struct i40iw_device *iwdev = dwork->iwdev;
1734
1735         i40iw_change_l2params(&iwdev->vsi, &dwork->l2params);
1736         atomic_dec(&iwdev->params_busy);
1737         kfree(work);
1738 }
1739
1740 /**
1741  * i40iw_l2param_change - handle qs handles for qos and mss change
1742  * @ldev: lan device information
1743  * @client: client for paramater change
1744  * @params: new parameters from L2
1745  */
1746 static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client,
1747                                  struct i40e_params *params)
1748 {
1749         struct i40iw_handler *hdl;
1750         struct i40iw_l2params *l2params;
1751         struct l2params_work *work;
1752         struct i40iw_device *iwdev;
1753         int i;
1754
1755         hdl = i40iw_find_i40e_handler(ldev);
1756         if (!hdl)
1757                 return;
1758
1759         iwdev = &hdl->device;
1760
1761         if (atomic_read(&iwdev->params_busy))
1762                 return;
1763
1764
1765         work = kzalloc(sizeof(*work), GFP_KERNEL);
1766         if (!work)
1767                 return;
1768
1769         atomic_inc(&iwdev->params_busy);
1770
1771         work->iwdev = iwdev;
1772         l2params = &work->l2params;
1773         for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++)
1774                 l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle;
1775
1776         l2params->mtu = (params->mtu) ? params->mtu : iwdev->vsi.mtu;
1777
1778         INIT_WORK(&work->work, i40iw_l2params_worker);
1779         queue_work(iwdev->param_wq, &work->work);
1780 }
1781
1782 /**
1783  * i40iw_close - client interface operation close for iwarp/uda device
1784  * @ldev: lan device information
1785  * @client: client to close
1786  *
1787  * Called by the lan driver during the processing of client unregister
1788  * Destroy and clean up the driver resources
1789  */
1790 static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
1791 {
1792         struct i40iw_device *iwdev;
1793         struct i40iw_handler *hdl;
1794
1795         hdl = i40iw_find_i40e_handler(ldev);
1796         if (!hdl)
1797                 return;
1798
1799         iwdev = &hdl->device;
1800         iwdev->closing = true;
1801
1802         if (reset)
1803                 iwdev->reset = true;
1804
1805         i40iw_cm_teardown_connections(iwdev, NULL, NULL, true);
1806         destroy_workqueue(iwdev->virtchnl_wq);
1807         i40iw_deinit_device(iwdev);
1808 }
1809
1810 /**
1811  * i40iw_vf_reset - process VF reset
1812  * @ldev: lan device information
1813  * @client: client interface instance
1814  * @vf_id: virtual function id
1815  *
1816  * Called when a VF is reset by the PF
1817  * Destroy and clean up the VF resources
1818  */
1819 static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
1820 {
1821         struct i40iw_handler *hdl;
1822         struct i40iw_sc_dev *dev;
1823         struct i40iw_hmc_fcn_info hmc_fcn_info;
1824         struct i40iw_virt_mem vf_dev_mem;
1825         struct i40iw_vfdev *tmp_vfdev;
1826         unsigned int i;
1827         unsigned long flags;
1828         struct i40iw_device *iwdev;
1829
1830         hdl = i40iw_find_i40e_handler(ldev);
1831         if (!hdl)
1832                 return;
1833
1834         dev = &hdl->device.sc_dev;
1835         iwdev = (struct i40iw_device *)dev->back_dev;
1836
1837         for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
1838                 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
1839                         continue;
1840                 /* free all resources allocated on behalf of vf */
1841                 tmp_vfdev = dev->vf_dev[i];
1842                 spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags);
1843                 dev->vf_dev[i] = NULL;
1844                 spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags);
1845                 i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
1846                 /* remove vf hmc function */
1847                 memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
1848                 hmc_fcn_info.vf_id = vf_id;
1849                 hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
1850                 hmc_fcn_info.free_fcn = true;
1851                 i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
1852                 /* free vf_dev */
1853                 vf_dev_mem.va = tmp_vfdev;
1854                 vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
1855                                         sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
1856                 i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
1857                 break;
1858         }
1859 }
1860
1861 /**
1862  * i40iw_vf_enable - enable a number of VFs
1863  * @ldev: lan device information
1864  * @client: client interface instance
1865  * @num_vfs: number of VFs for the PF
1866  *
1867  * Called when the number of VFs changes
1868  */
1869 static void i40iw_vf_enable(struct i40e_info *ldev,
1870                             struct i40e_client *client,
1871                             u32 num_vfs)
1872 {
1873         struct i40iw_handler *hdl;
1874
1875         hdl = i40iw_find_i40e_handler(ldev);
1876         if (!hdl)
1877                 return;
1878
1879         if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
1880                 hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
1881         else
1882                 hdl->device.max_enabled_vfs = num_vfs;
1883 }
1884
1885 /**
1886  * i40iw_vf_capable - check if VF capable
1887  * @ldev: lan device information
1888  * @client: client interface instance
1889  * @vf_id: virtual function id
1890  *
1891  * Return 1 if a VF slot is available or if VF is already RDMA enabled
1892  * Return 0 otherwise
1893  */
1894 static int i40iw_vf_capable(struct i40e_info *ldev,
1895                             struct i40e_client *client,
1896                             u32 vf_id)
1897 {
1898         struct i40iw_handler *hdl;
1899         struct i40iw_sc_dev *dev;
1900         unsigned int i;
1901
1902         hdl = i40iw_find_i40e_handler(ldev);
1903         if (!hdl)
1904                 return 0;
1905
1906         dev = &hdl->device.sc_dev;
1907
1908         for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
1909                 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
1910                         return 1;
1911         }
1912
1913         return 0;
1914 }
1915
1916 /**
1917  * i40iw_virtchnl_receive - receive a message through the virtual channel
1918  * @ldev: lan device information
1919  * @client: client interface instance
1920  * @vf_id: virtual function id associated with the message
1921  * @msg: message buffer pointer
1922  * @len: length of the message
1923  *
1924  * Invoke virtual channel receive operation for the given msg
1925  * Return 0 if successful, otherwise return error
1926  */
1927 static int i40iw_virtchnl_receive(struct i40e_info *ldev,
1928                                   struct i40e_client *client,
1929                                   u32 vf_id,
1930                                   u8 *msg,
1931                                   u16 len)
1932 {
1933         struct i40iw_handler *hdl;
1934         struct i40iw_sc_dev *dev;
1935         struct i40iw_device *iwdev;
1936         int ret_code = I40IW_NOT_SUPPORTED;
1937
1938         if (!len || !msg)
1939                 return I40IW_ERR_PARAM;
1940
1941         hdl = i40iw_find_i40e_handler(ldev);
1942         if (!hdl)
1943                 return I40IW_ERR_PARAM;
1944
1945         dev = &hdl->device.sc_dev;
1946         iwdev = dev->back_dev;
1947
1948         if (dev->vchnl_if.vchnl_recv) {
1949                 ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
1950                 if (!dev->is_pf) {
1951                         atomic_dec(&iwdev->vchnl_msgs);
1952                         wake_up(&iwdev->vchnl_waitq);
1953                 }
1954         }
1955         return ret_code;
1956 }
1957
1958 /**
1959  * i40iw_vf_clear_to_send - wait to send virtual channel message
1960  * @dev: iwarp device *
1961  * Wait for until virtual channel is clear
1962  * before sending the next message
1963  *
1964  * Returns false if error
1965  * Returns true if clear to send
1966  */
1967 bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
1968 {
1969         struct i40iw_device *iwdev;
1970         wait_queue_entry_t wait;
1971
1972         iwdev = dev->back_dev;
1973
1974         if (!wq_has_sleeper(&dev->vf_reqs) &&
1975             (atomic_read(&iwdev->vchnl_msgs) == 0))
1976                 return true; /* virtual channel is clear */
1977
1978         init_wait(&wait);
1979         add_wait_queue_exclusive(&dev->vf_reqs, &wait);
1980
1981         if (!wait_event_timeout(dev->vf_reqs,
1982                                 (atomic_read(&iwdev->vchnl_msgs) == 0),
1983                                 I40IW_VCHNL_EVENT_TIMEOUT))
1984                 dev->vchnl_up = false;
1985
1986         remove_wait_queue(&dev->vf_reqs, &wait);
1987
1988         return dev->vchnl_up;
1989 }
1990
1991 /**
1992  * i40iw_virtchnl_send - send a message through the virtual channel
1993  * @dev: iwarp device
1994  * @vf_id: virtual function id associated with the message
1995  * @msg: virtual channel message buffer pointer
1996  * @len: length of the message
1997  *
1998  * Invoke virtual channel send operation for the given msg
1999  * Return 0 if successful, otherwise return error
2000  */
2001 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
2002                                                   u32 vf_id,
2003                                                   u8 *msg,
2004                                                   u16 len)
2005 {
2006         struct i40iw_device *iwdev;
2007         struct i40e_info *ldev;
2008
2009         if (!dev || !dev->back_dev)
2010                 return I40IW_ERR_BAD_PTR;
2011
2012         iwdev = dev->back_dev;
2013         ldev = iwdev->ldev;
2014
2015         if (ldev && ldev->ops && ldev->ops->virtchnl_send)
2016                 return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
2017         return I40IW_ERR_BAD_PTR;
2018 }
2019
2020 /* client interface functions */
2021 static const struct i40e_client_ops i40e_ops = {
2022         .open = i40iw_open,
2023         .close = i40iw_close,
2024         .l2_param_change = i40iw_l2param_change,
2025         .virtchnl_receive = i40iw_virtchnl_receive,
2026         .vf_reset = i40iw_vf_reset,
2027         .vf_enable = i40iw_vf_enable,
2028         .vf_capable = i40iw_vf_capable
2029 };
2030
2031 /**
2032  * i40iw_init_module - driver initialization function
2033  *
2034  * First function to call when the driver is loaded
2035  * Register the driver as i40e client and port mapper client
2036  */
2037 static int __init i40iw_init_module(void)
2038 {
2039         int ret;
2040
2041         memset(&i40iw_client, 0, sizeof(i40iw_client));
2042         i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
2043         i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
2044         i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
2045         i40iw_client.ops = &i40e_ops;
2046         memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
2047         i40iw_client.type = I40E_CLIENT_IWARP;
2048         spin_lock_init(&i40iw_handler_lock);
2049         ret = i40e_register_client(&i40iw_client);
2050         i40iw_register_notifiers();
2051
2052         return ret;
2053 }
2054
2055 /**
2056  * i40iw_exit_module - driver exit clean up function
2057  *
2058  * The function is called just before the driver is unloaded
2059  * Unregister the driver as i40e client and port mapper client
2060  */
2061 static void __exit i40iw_exit_module(void)
2062 {
2063         i40iw_unregister_notifiers();
2064         i40e_unregister_client(&i40iw_client);
2065 }
2066
2067 module_init(i40iw_init_module);
2068 module_exit(i40iw_exit_module);