drivers/infiniband/hw/i40iw/i40iw_utils.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/ethtool.h>
  40 #include <linux/mii.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/crc32.h>
  43 #include <linux/in.h>
  44 #include <linux/ip.h>
  45 #include <linux/tcp.h>
  46 #include <linux/init.h>
  47 #include <linux/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/byteorder.h>
  50 #include <net/netevent.h>
  51 #include <net/neighbour.h>
  52 #include "i40iw.h"
  53
  54 /**
  55  * i40iw_arp_table - manage arp table
  56  * @iwdev: iwarp device
  57  * @ip_addr: ip address for device
  58  * @mac_addr: mac address ptr
  59  * @action: modify, delete or add
  60  */
  61 int i40iw_arp_table(struct i40iw_device *iwdev,
  62                     u32 *ip_addr,
  63                     bool ipv4,
  64                     u8 *mac_addr,
  65                     u32 action)
  66 {
  67         int arp_index;
  68         int err;
  69         u32 ip[4];
  70
  71         if (ipv4) {
  72                 memset(ip, 0, sizeof(ip));
  73                 ip[0] = *ip_addr;
  74         } else {
  75                 memcpy(ip, ip_addr, sizeof(ip));
  76         }
  77
  78         for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
  79                 if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
  80                         break;
  81         switch (action) {
  82         case I40IW_ARP_ADD:
  83                 if (arp_index != iwdev->arp_table_size)
  84                         return -1;
  85
  86                 arp_index = 0;
  87                 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
  88                                            iwdev->arp_table_size,
  89                                            (u32 *)&arp_index,
  90                                            &iwdev->next_arp_index);
  91
  92                 if (err)
  93                         return err;
  94
  95                 memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
  96                 ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
  97                 break;
  98         case I40IW_ARP_RESOLVE:
  99                 if (arp_index == iwdev->arp_table_size)
 100                         return -1;
 101                 break;
 102         case I40IW_ARP_DELETE:
 103                 if (arp_index == iwdev->arp_table_size)
 104                         return -1;
 105                 memset(iwdev->arp_table[arp_index].ip_addr, 0,
 106                        sizeof(iwdev->arp_table[arp_index].ip_addr));
 107                 eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
 108                 i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
 109                 break;
 110         default:
 111                 return -1;
 112         }
 113         return arp_index;
 114 }
 115
 116 /**
 117  * i40iw_wr32 - write 32 bits to hw register
 118  * @hw: hardware information including registers
 119  * @reg: register offset
 120  * @value: vvalue to write to register
 121  */
 122 inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
 123 {
 124         writel(value, hw->hw_addr + reg);
 125 }
 126
 127 /**
 128  * i40iw_rd32 - read a 32 bit hw register
 129  * @hw: hardware information including registers
 130  * @reg: register offset
 131  *
 132  * Return value of register content
 133  */
 134 inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
 135 {
 136         return readl(hw->hw_addr + reg);
 137 }
 138
 139 /**
 140  * i40iw_inetaddr_event - system notifier for netdev events
 141  * @notfier: not used
 142  * @event: event for notifier
 143  * @ptr: if address
 144  */
 145 int i40iw_inetaddr_event(struct notifier_block *notifier,
 146                          unsigned long event,
 147                          void *ptr)
 148 {
 149         struct in_ifaddr *ifa = ptr;
 150         struct net_device *event_netdev = ifa->ifa_dev->dev;
 151         struct net_device *netdev;
 152         struct net_device *upper_dev;
 153         struct i40iw_device *iwdev;
 154         struct i40iw_handler *hdl;
 155         u32 local_ipaddr;
 156         u32 action = I40IW_ARP_ADD;
 157
 158         hdl = i40iw_find_netdev(event_netdev);
 159         if (!hdl)
 160                 return NOTIFY_DONE;
 161
 162         iwdev = &hdl->device;
 163         if (iwdev->init_state < INET_NOTIFIER)
 164                 return NOTIFY_DONE;
 165
 166         netdev = iwdev->ldev->netdev;
 167         upper_dev = netdev_master_upper_dev_get(netdev);
 168         if (netdev != event_netdev)
 169                 return NOTIFY_DONE;
 170
 171         if (upper_dev)
 172                 local_ipaddr = ntohl(
 173                         ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
 174         else
 175                 local_ipaddr = ntohl(ifa->ifa_address);
 176         switch (event) {
 177         case NETDEV_DOWN:
 178                 action = I40IW_ARP_DELETE;
 179                 /* Fall through */
 180         case NETDEV_UP:
 181                 /* Fall through */
 182         case NETDEV_CHANGEADDR:
 183                 i40iw_manage_arp_cache(iwdev,
 184                                        netdev->dev_addr,
 185                                        &local_ipaddr,
 186                                        true,
 187                                        action);
 188                 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
 189                                 (action == I40IW_ARP_ADD) ? true : false);
 190                 break;
 191         default:
 192                 break;
 193         }
 194         return NOTIFY_DONE;
 195 }
 196
 197 /**
 198  * i40iw_inet6addr_event - system notifier for ipv6 netdev events
 199  * @notfier: not used
 200  * @event: event for notifier
 201  * @ptr: if address
 202  */
 203 int i40iw_inet6addr_event(struct notifier_block *notifier,
 204                           unsigned long event,
 205                           void *ptr)
 206 {
 207         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
 208         struct net_device *event_netdev = ifa->idev->dev;
 209         struct net_device *netdev;
 210         struct i40iw_device *iwdev;
 211         struct i40iw_handler *hdl;
 212         u32 local_ipaddr6[4];
 213         u32 action = I40IW_ARP_ADD;
 214
 215         hdl = i40iw_find_netdev(event_netdev);
 216         if (!hdl)
 217                 return NOTIFY_DONE;
 218
 219         iwdev = &hdl->device;
 220         if (iwdev->init_state < INET_NOTIFIER)
 221                 return NOTIFY_DONE;
 222
 223         netdev = iwdev->ldev->netdev;
 224         if (netdev != event_netdev)
 225                 return NOTIFY_DONE;
 226
 227         i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
 228         switch (event) {
 229         case NETDEV_DOWN:
 230                 action = I40IW_ARP_DELETE;
 231                 /* Fall through */
 232         case NETDEV_UP:
 233                 /* Fall through */
 234         case NETDEV_CHANGEADDR:
 235                 i40iw_manage_arp_cache(iwdev,
 236                                        netdev->dev_addr,
 237                                        local_ipaddr6,
 238                                        false,
 239                                        action);
 240                 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
 241                                 (action == I40IW_ARP_ADD) ? true : false);
 242                 break;
 243         default:
 244                 break;
 245         }
 246         return NOTIFY_DONE;
 247 }
 248
 249 /**
 250  * i40iw_net_event - system notifier for net events
 251  * @notfier: not used
 252  * @event: event for notifier
 253  * @ptr: neighbor
 254  */
 255 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
 256 {
 257         struct neighbour *neigh = ptr;
 258         struct i40iw_device *iwdev;
 259         struct i40iw_handler *iwhdl;
 260         __be32 *p;
 261         u32 local_ipaddr[4];
 262
 263         switch (event) {
 264         case NETEVENT_NEIGH_UPDATE:
 265                 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
 266                 if (!iwhdl)
 267                         return NOTIFY_DONE;
 268                 iwdev = &iwhdl->device;
 269                 if (iwdev->init_state < INET_NOTIFIER)
 270                         return NOTIFY_DONE;
 271                 p = (__be32 *)neigh->primary_key;
 272                 i40iw_copy_ip_ntohl(local_ipaddr, p);
 273                 if (neigh->nud_state & NUD_VALID) {
 274                         i40iw_manage_arp_cache(iwdev,
 275                                                neigh->ha,
 276                                                local_ipaddr,
 277                                                false,
 278                                                I40IW_ARP_ADD);
 279
 280                 } else {
 281                         i40iw_manage_arp_cache(iwdev,
 282                                                neigh->ha,
 283                                                local_ipaddr,
 284                                                false,
 285                                                I40IW_ARP_DELETE);
 286                 }
 287                 break;
 288         default:
 289                 break;
 290         }
 291         return NOTIFY_DONE;
 292 }
 293
 294 /**
 295  * i40iw_get_cqp_request - get cqp struct
 296  * @cqp: device cqp ptr
 297  * @wait: cqp to be used in wait mode
 298  */
 299 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
 300 {
 301         struct i40iw_cqp_request *cqp_request = NULL;
 302         unsigned long flags;
 303
 304         spin_lock_irqsave(&cqp->req_lock, flags);
 305         if (!list_empty(&cqp->cqp_avail_reqs)) {
 306                 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
 307                                          struct i40iw_cqp_request, list);
 308                 list_del_init(&cqp_request->list);
 309         }
 310         spin_unlock_irqrestore(&cqp->req_lock, flags);
 311         if (!cqp_request) {
 312                 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
 313                 if (cqp_request) {
 314                         cqp_request->dynamic = true;
 315                         INIT_LIST_HEAD(&cqp_request->list);
 316                         init_waitqueue_head(&cqp_request->waitq);
 317                 }
 318         }
 319         if (!cqp_request) {
 320                 i40iw_pr_err("CQP Request Fail: No Memory");
 321                 return NULL;
 322         }
 323
 324         if (wait) {
 325                 atomic_set(&cqp_request->refcount, 2);
 326                 cqp_request->waiting = true;
 327         } else {
 328                 atomic_set(&cqp_request->refcount, 1);
 329         }
 330         return cqp_request;
 331 }
 332
 333 /**
 334  * i40iw_free_cqp_request - free cqp request
 335  * @cqp: cqp ptr
 336  * @cqp_request: to be put back in cqp list
 337  */
 338 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
 339 {
 340         struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
 341         unsigned long flags;
 342
 343         if (cqp_request->dynamic) {
 344                 kfree(cqp_request);
 345         } else {
 346                 cqp_request->request_done = false;
 347                 cqp_request->callback_fcn = NULL;
 348                 cqp_request->waiting = false;
 349
 350                 spin_lock_irqsave(&cqp->req_lock, flags);
 351                 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
 352                 spin_unlock_irqrestore(&cqp->req_lock, flags);
 353         }
 354         wake_up(&iwdev->close_wq);
 355 }
 356
 357 /**
 358  * i40iw_put_cqp_request - dec ref count and free if 0
 359  * @cqp: cqp ptr
 360  * @cqp_request: to be put back in cqp list
 361  */
 362 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
 363                            struct i40iw_cqp_request *cqp_request)
 364 {
 365         if (atomic_dec_and_test(&cqp_request->refcount))
 366                 i40iw_free_cqp_request(cqp, cqp_request);
 367 }
 368
 369 /**
 370  * i40iw_free_pending_cqp_request -free pending cqp request objs
 371  * @cqp: cqp ptr
 372  * @cqp_request: to be put back in cqp list
 373  */
 374 static void i40iw_free_pending_cqp_request(struct i40iw_cqp *cqp,
 375                                            struct i40iw_cqp_request *cqp_request)
 376 {
 377         struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
 378
 379         if (cqp_request->waiting) {
 380                 cqp_request->compl_info.error = true;
 381                 cqp_request->request_done = true;
 382                 wake_up(&cqp_request->waitq);
 383         }
 384         i40iw_put_cqp_request(cqp, cqp_request);
 385         wait_event_timeout(iwdev->close_wq,
 386                            !atomic_read(&cqp_request->refcount),
 387                            1000);
 388 }
 389
 390 /**
 391  * i40iw_cleanup_pending_cqp_op - clean-up cqp with no completions
 392  * @iwdev: iwarp device
 393  */
 394 void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev)
 395 {
 396         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 397         struct i40iw_cqp *cqp = &iwdev->cqp;
 398         struct i40iw_cqp_request *cqp_request = NULL;
 399         struct cqp_commands_info *pcmdinfo = NULL;
 400         u32 i, pending_work, wqe_idx;
 401
 402         pending_work = I40IW_RING_WORK_AVAILABLE(cqp->sc_cqp.sq_ring);
 403         wqe_idx = I40IW_RING_GETCURRENT_TAIL(cqp->sc_cqp.sq_ring);
 404         for (i = 0; i < pending_work; i++) {
 405                 cqp_request = (struct i40iw_cqp_request *)(unsigned long)cqp->scratch_array[wqe_idx];
 406                 if (cqp_request)
 407                         i40iw_free_pending_cqp_request(cqp, cqp_request);
 408                 wqe_idx = (wqe_idx + 1) % I40IW_RING_GETSIZE(cqp->sc_cqp.sq_ring);
 409         }
 410
 411         while (!list_empty(&dev->cqp_cmd_head)) {
 412                 pcmdinfo = (struct cqp_commands_info *)i40iw_remove_head(&dev->cqp_cmd_head);
 413                 cqp_request = container_of(pcmdinfo, struct i40iw_cqp_request, info);
 414                 if (cqp_request)
 415                         i40iw_free_pending_cqp_request(cqp, cqp_request);
 416         }
 417 }
 418
 419 /**
 420  * i40iw_free_qp - callback after destroy cqp completes
 421  * @cqp_request: cqp request for destroy qp
 422  * @num: not used
 423  */
 424 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
 425 {
 426         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
 427         struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
 428         struct i40iw_device *iwdev;
 429         u32 qp_num = iwqp->ibqp.qp_num;
 430
 431         iwdev = iwqp->iwdev;
 432
 433         i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
 434         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 435         i40iw_rem_devusecount(iwdev);
 436 }
 437
 438 /**
 439  * i40iw_wait_event - wait for completion
 440  * @iwdev: iwarp device
 441  * @cqp_request: cqp request to wait
 442  */
 443 static int i40iw_wait_event(struct i40iw_device *iwdev,
 444                             struct i40iw_cqp_request *cqp_request)
 445 {
 446         struct cqp_commands_info *info = &cqp_request->info;
 447         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 448         bool cqp_error = false;
 449         int err_code = 0;
 450         int timeout_ret = 0;
 451
 452         timeout_ret = wait_event_timeout(cqp_request->waitq,
 453                                          cqp_request->request_done,
 454                                          I40IW_EVENT_TIMEOUT);
 455         if (!timeout_ret) {
 456                 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
 457                              info->cqp_cmd, timeout_ret);
 458                 err_code = -ETIME;
 459                 if (!iwdev->reset) {
 460                         iwdev->reset = true;
 461                         i40iw_request_reset(iwdev);
 462                 }
 463                 goto done;
 464         }
 465         cqp_error = cqp_request->compl_info.error;
 466         if (cqp_error) {
 467                 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
 468                              info->cqp_cmd, cqp_request->compl_info.maj_err_code,
 469                              cqp_request->compl_info.min_err_code);
 470                 err_code = -EPROTO;
 471                 goto done;
 472         }
 473 done:
 474         i40iw_put_cqp_request(iwcqp, cqp_request);
 475         return err_code;
 476 }
 477
 478 /**
 479  * i40iw_handle_cqp_op - process cqp command
 480  * @iwdev: iwarp device
 481  * @cqp_request: cqp request to process
 482  */
 483 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
 484                                            struct i40iw_cqp_request
 485                                            *cqp_request)
 486 {
 487         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 488         enum i40iw_status_code status;
 489         struct cqp_commands_info *info = &cqp_request->info;
 490         int err_code = 0;
 491
 492         if (iwdev->reset) {
 493                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 494                 return I40IW_ERR_CQP_COMPL_ERROR;
 495         }
 496
 497         status = i40iw_process_cqp_cmd(dev, info);
 498         if (status) {
 499                 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
 500                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 501                 return status;
 502         }
 503         if (cqp_request->waiting)
 504                 err_code = i40iw_wait_event(iwdev, cqp_request);
 505         if (err_code)
 506                 status = I40IW_ERR_CQP_COMPL_ERROR;
 507         return status;
 508 }
 509
 510 /**
 511  * i40iw_add_devusecount - add dev refcount
 512  * @iwdev: dev for refcount
 513  */
 514 void i40iw_add_devusecount(struct i40iw_device *iwdev)
 515 {
 516         atomic64_inc(&iwdev->use_count);
 517 }
 518
 519 /**
 520  * i40iw_rem_devusecount - decrement refcount for dev
 521  * @iwdev: device
 522  */
 523 void i40iw_rem_devusecount(struct i40iw_device *iwdev)
 524 {
 525         if (!atomic64_dec_and_test(&iwdev->use_count))
 526                 return;
 527         wake_up(&iwdev->close_wq);
 528 }
 529
 530 /**
 531  * i40iw_add_pdusecount - add pd refcount
 532  * @iwpd: pd for refcount
 533  */
 534 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
 535 {
 536         atomic_inc(&iwpd->usecount);
 537 }
 538
 539 /**
 540  * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
 541  * @iwpd: pd for refcount
 542  * @iwdev: iwarp device
 543  */
 544 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
 545 {
 546         if (!atomic_dec_and_test(&iwpd->usecount))
 547                 return;
 548         i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
 549         kfree(iwpd);
 550 }
 551
 552 /**
 553  * i40iw_add_ref - add refcount for qp
 554  * @ibqp: iqarp qp
 555  */
 556 void i40iw_add_ref(struct ib_qp *ibqp)
 557 {
 558         struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
 559
 560         atomic_inc(&iwqp->refcount);
 561 }
 562
 563 /**
 564  * i40iw_rem_ref - rem refcount for qp and free if 0
 565  * @ibqp: iqarp qp
 566  */
 567 void i40iw_rem_ref(struct ib_qp *ibqp)
 568 {
 569         struct i40iw_qp *iwqp;
 570         enum i40iw_status_code status;
 571         struct i40iw_cqp_request *cqp_request;
 572         struct cqp_commands_info *cqp_info;
 573         struct i40iw_device *iwdev;
 574         u32 qp_num;
 575         unsigned long flags;
 576
 577         iwqp = to_iwqp(ibqp);
 578         iwdev = iwqp->iwdev;
 579         spin_lock_irqsave(&iwdev->qptable_lock, flags);
 580         if (!atomic_dec_and_test(&iwqp->refcount)) {
 581                 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 582                 return;
 583         }
 584
 585         qp_num = iwqp->ibqp.qp_num;
 586         iwdev->qp_table[qp_num] = NULL;
 587         spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 588         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 589         if (!cqp_request)
 590                 return;
 591
 592         cqp_request->callback_fcn = i40iw_free_qp;
 593         cqp_request->param = (void *)&iwqp->sc_qp;
 594         cqp_info = &cqp_request->info;
 595         cqp_info->cqp_cmd = OP_QP_DESTROY;
 596         cqp_info->post_sq = 1;
 597         cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
 598         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
 599         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
 600         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 601         if (!status)
 602                 return;
 603
 604         i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
 605         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 606         i40iw_rem_devusecount(iwdev);
 607 }
 608
 609 /**
 610  * i40iw_get_qp - get qp address
 611  * @device: iwarp device
 612  * @qpn: qp number
 613  */
 614 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
 615 {
 616         struct i40iw_device *iwdev = to_iwdev(device);
 617
 618         if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
 619                 return NULL;
 620
 621         return &iwdev->qp_table[qpn]->ibqp;
 622 }
 623
 624 /**
 625  * i40iw_debug_buf - print debug msg and buffer is mask set
 626  * @dev: hardware control device structure
 627  * @mask: mask to compare if to print debug buffer
 628  * @buf: points buffer addr
 629  * @size: saize of buffer to print
 630  */
 631 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
 632                      enum i40iw_debug_flag mask,
 633                      char *desc,
 634                      u64 *buf,
 635                      u32 size)
 636 {
 637         u32 i;
 638
 639         if (!(dev->debug_mask & mask))
 640                 return;
 641         i40iw_debug(dev, mask, "%s\n", desc);
 642         i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
 643                     (unsigned long long)virt_to_phys(buf));
 644
 645         for (i = 0; i < size; i += 8)
 646                 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
 647 }
 648
 649 /**
 650  * i40iw_get_hw_addr - return hw addr
 651  * @par: points to shared dev
 652  */
 653 u8 __iomem *i40iw_get_hw_addr(void *par)
 654 {
 655         struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
 656
 657         return dev->hw->hw_addr;
 658 }
 659
 660 /**
 661  * i40iw_remove_head - return head entry and remove from list
 662  * @list: list for entry
 663  */
 664 void *i40iw_remove_head(struct list_head *list)
 665 {
 666         struct list_head *entry;
 667
 668         if (list_empty(list))
 669                 return NULL;
 670
 671         entry = (void *)list->next;
 672         list_del(entry);
 673         return (void *)entry;
 674 }
 675
 676 /**
 677  * i40iw_allocate_dma_mem - Memory alloc helper fn
 678  * @hw:   pointer to the HW structure
 679  * @mem:  ptr to mem struct to fill out
 680  * @size: size of memory requested
 681  * @alignment: what to align the allocation to
 682  */
 683 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
 684                                               struct i40iw_dma_mem *mem,
 685                                               u64 size,
 686                                               u32 alignment)
 687 {
 688         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 689
 690         if (!mem)
 691                 return I40IW_ERR_PARAM;
 692         mem->size = ALIGN(size, alignment);
 693         mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
 694                                       (dma_addr_t *)&mem->pa, GFP_KERNEL);
 695         if (!mem->va)
 696                 return I40IW_ERR_NO_MEMORY;
 697         return 0;
 698 }
 699
 700 /**
 701  * i40iw_free_dma_mem - Memory free helper fn
 702  * @hw:   pointer to the HW structure
 703  * @mem:  ptr to mem struct to free
 704  */
 705 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
 706 {
 707         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 708
 709         if (!mem || !mem->va)
 710                 return;
 711
 712         dma_free_coherent(&pcidev->dev, mem->size,
 713                           mem->va, (dma_addr_t)mem->pa);
 714         mem->va = NULL;
 715 }
 716
 717 /**
 718  * i40iw_allocate_virt_mem - virtual memory alloc helper fn
 719  * @hw:   pointer to the HW structure
 720  * @mem:  ptr to mem struct to fill out
 721  * @size: size of memory requested
 722  */
 723 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
 724                                                struct i40iw_virt_mem *mem,
 725                                                u32 size)
 726 {
 727         if (!mem)
 728                 return I40IW_ERR_PARAM;
 729
 730         mem->size = size;
 731         mem->va = kzalloc(size, GFP_KERNEL);
 732
 733         if (mem->va)
 734                 return 0;
 735         else
 736                 return I40IW_ERR_NO_MEMORY;
 737 }
 738
 739 /**
 740  * i40iw_free_virt_mem - virtual memory free helper fn
 741  * @hw:   pointer to the HW structure
 742  * @mem:  ptr to mem struct to free
 743  */
 744 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
 745                                            struct i40iw_virt_mem *mem)
 746 {
 747         if (!mem)
 748                 return I40IW_ERR_PARAM;
 749         /*
 750          * mem->va points to the parent of mem, so both mem and mem->va
 751          * can not be touched once mem->va is freed
 752          */
 753         kfree(mem->va);
 754         return 0;
 755 }
 756
 757 /**
 758  * i40iw_cqp_sds_cmd - create cqp command for sd
 759  * @dev: hardware control device structure
 760  * @sd_info: information  for sd cqp
 761  *
 762  */
 763 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
 764                                          struct i40iw_update_sds_info *sdinfo)
 765 {
 766         enum i40iw_status_code status;
 767         struct i40iw_cqp_request *cqp_request;
 768         struct cqp_commands_info *cqp_info;
 769         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 770
 771         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 772         if (!cqp_request)
 773                 return I40IW_ERR_NO_MEMORY;
 774         cqp_info = &cqp_request->info;
 775         memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
 776                sizeof(cqp_info->in.u.update_pe_sds.info));
 777         cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
 778         cqp_info->post_sq = 1;
 779         cqp_info->in.u.update_pe_sds.dev = dev;
 780         cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
 781         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 782         if (status)
 783                 i40iw_pr_err("CQP-OP Update SD's fail");
 784         return status;
 785 }
 786
 787 /**
 788  * i40iw_qp_suspend_resume - cqp command for suspend/resume
 789  * @dev: hardware control device structure
 790  * @qp: hardware control qp
 791  * @suspend: flag if suspend or resume
 792  */
 793 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
 794 {
 795         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 796         struct i40iw_cqp_request *cqp_request;
 797         struct i40iw_sc_cqp *cqp = dev->cqp;
 798         struct cqp_commands_info *cqp_info;
 799         enum i40iw_status_code status;
 800
 801         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 802         if (!cqp_request)
 803                 return;
 804
 805         cqp_info = &cqp_request->info;
 806         cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
 807         cqp_info->in.u.suspend_resume.cqp = cqp;
 808         cqp_info->in.u.suspend_resume.qp = qp;
 809         cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
 810         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 811         if (status)
 812                 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
 813 }
 814
 815 /**
 816  * i40iw_term_modify_qp - modify qp for term message
 817  * @qp: hardware control qp
 818  * @next_state: qp's next state
 819  * @term: terminate code
 820  * @term_len: length
 821  */
 822 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
 823 {
 824         struct i40iw_qp *iwqp;
 825
 826         iwqp = (struct i40iw_qp *)qp->back_qp;
 827         i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
 828 };
 829
 830 /**
 831  * i40iw_terminate_done - after terminate is completed
 832  * @qp: hardware control qp
 833  * @timeout_occurred: indicates if terminate timer expired
 834  */
 835 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
 836 {
 837         struct i40iw_qp *iwqp;
 838         u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
 839         u8 hte = 0;
 840         bool first_time;
 841         unsigned long flags;
 842
 843         iwqp = (struct i40iw_qp *)qp->back_qp;
 844         spin_lock_irqsave(&iwqp->lock, flags);
 845         if (iwqp->hte_added) {
 846                 iwqp->hte_added = 0;
 847                 hte = 1;
 848         }
 849         first_time = !(qp->term_flags & I40IW_TERM_DONE);
 850         qp->term_flags |= I40IW_TERM_DONE;
 851         spin_unlock_irqrestore(&iwqp->lock, flags);
 852         if (first_time) {
 853                 if (!timeout_occurred)
 854                         i40iw_terminate_del_timer(qp);
 855                 else
 856                         next_iwarp_state = I40IW_QP_STATE_CLOSING;
 857
 858                 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
 859                 i40iw_cm_disconn(iwqp);
 860         }
 861 }
 862
 863 /**
 864  * i40iw_terminate_imeout - timeout happened
 865  * @context: points to iwarp qp
 866  */
 867 static void i40iw_terminate_timeout(unsigned long context)
 868 {
 869         struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
 870         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
 871
 872         i40iw_terminate_done(qp, 1);
 873         i40iw_rem_ref(&iwqp->ibqp);
 874 }
 875
 876 /**
 877  * i40iw_terminate_start_timer - start terminate timeout
 878  * @qp: hardware control qp
 879  */
 880 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
 881 {
 882         struct i40iw_qp *iwqp;
 883
 884         iwqp = (struct i40iw_qp *)qp->back_qp;
 885         i40iw_add_ref(&iwqp->ibqp);
 886         setup_timer(&iwqp->terminate_timer, i40iw_terminate_timeout,
 887                     (unsigned long)iwqp);
 888         iwqp->terminate_timer.expires = jiffies + HZ;
 889         add_timer(&iwqp->terminate_timer);
 890 }
 891
 892 /**
 893  * i40iw_terminate_del_timer - delete terminate timeout
 894  * @qp: hardware control qp
 895  */
 896 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
 897 {
 898         struct i40iw_qp *iwqp;
 899
 900         iwqp = (struct i40iw_qp *)qp->back_qp;
 901         if (del_timer(&iwqp->terminate_timer))
 902                 i40iw_rem_ref(&iwqp->ibqp);
 903 }
 904
 905 /**
 906  * i40iw_cqp_generic_worker - generic worker for cqp
 907  * @work: work pointer
 908  */
 909 static void i40iw_cqp_generic_worker(struct work_struct *work)
 910 {
 911         struct i40iw_virtchnl_work_info *work_info =
 912             &((struct virtchnl_work *)work)->work_info;
 913
 914         if (work_info->worker_vf_dev)
 915                 work_info->callback_fcn(work_info->worker_vf_dev);
 916 }
 917
 918 /**
 919  * i40iw_cqp_spawn_worker - spawn worket thread
 920  * @iwdev: device struct pointer
 921  * @work_info: work request info
 922  * @iw_vf_idx: virtual function index
 923  */
 924 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
 925                             struct i40iw_virtchnl_work_info *work_info,
 926                             u32 iw_vf_idx)
 927 {
 928         struct virtchnl_work *work;
 929         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 930
 931         work = &iwdev->virtchnl_w[iw_vf_idx];
 932         memcpy(&work->work_info, work_info, sizeof(*work_info));
 933         INIT_WORK(&work->work, i40iw_cqp_generic_worker);
 934         queue_work(iwdev->virtchnl_wq, &work->work);
 935 }
 936
 937 /**
 938  * i40iw_cqp_manage_hmc_fcn_worker -
 939  * @work: work pointer for hmc info
 940  */
 941 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
 942 {
 943         struct i40iw_cqp_request *cqp_request =
 944             ((struct virtchnl_work *)work)->cqp_request;
 945         struct i40iw_ccq_cqe_info ccq_cqe_info;
 946         struct i40iw_hmc_fcn_info *hmcfcninfo =
 947                         &cqp_request->info.in.u.manage_hmc_pm.info;
 948         struct i40iw_device *iwdev =
 949             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
 950
 951         ccq_cqe_info.cqp = NULL;
 952         ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
 953         ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
 954         ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
 955         ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
 956         ccq_cqe_info.scratch = 0;
 957         ccq_cqe_info.error = cqp_request->compl_info.error;
 958         hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
 959                                  hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
 960         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 961 }
 962
 963 /**
 964  * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
 965  * @cqp_request: cqp request info struct for hmc fun
 966  * @unused: unused param of callback
 967  */
 968 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
 969                                               u32 unused)
 970 {
 971         struct virtchnl_work *work;
 972         struct i40iw_hmc_fcn_info *hmcfcninfo =
 973             &cqp_request->info.in.u.manage_hmc_pm.info;
 974         struct i40iw_device *iwdev =
 975             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
 976             back_dev;
 977
 978         if (hmcfcninfo && hmcfcninfo->callback_fcn) {
 979                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
 980                 atomic_inc(&cqp_request->refcount);
 981                 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
 982                 work->cqp_request = cqp_request;
 983                 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
 984                 queue_work(iwdev->virtchnl_wq, &work->work);
 985                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
 986         } else {
 987                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
 988         }
 989 }
 990
 991 /**
 992  * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
 993  * @dev: hardware control device structure
 994  * @hmcfcninfo: info for hmc
 995  */
 996 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
 997                                                     struct i40iw_hmc_fcn_info *hmcfcninfo)
 998 {
 999         enum i40iw_status_code status;
1000         struct i40iw_cqp_request *cqp_request;
1001         struct cqp_commands_info *cqp_info;
1002         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1003
1004         i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
1005         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
1006         if (!cqp_request)
1007                 return I40IW_ERR_NO_MEMORY;
1008         cqp_info = &cqp_request->info;
1009         cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
1010         cqp_request->param = hmcfcninfo;
1011         memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
1012                sizeof(*hmcfcninfo));
1013         cqp_info->in.u.manage_hmc_pm.dev = dev;
1014         cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
1015         cqp_info->post_sq = 1;
1016         cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
1017         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1018         if (status)
1019                 i40iw_pr_err("CQP-OP Manage HMC fail");
1020         return status;
1021 }
1022
1023 /**
1024  * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
1025  * @iwdev: function device struct
1026  * @values_mem: buffer for fpm
1027  * @hmc_fn_id: function id for fpm
1028  */
1029 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
1030                                                       struct i40iw_dma_mem *values_mem,
1031                                                       u8 hmc_fn_id)
1032 {
1033         enum i40iw_status_code status;
1034         struct i40iw_cqp_request *cqp_request;
1035         struct cqp_commands_info *cqp_info;
1036         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1037
1038         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1039         if (!cqp_request)
1040                 return I40IW_ERR_NO_MEMORY;
1041         cqp_info = &cqp_request->info;
1042         cqp_request->param = NULL;
1043         cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
1044         cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
1045         cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
1046         cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
1047         cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
1048         cqp_info->post_sq = 1;
1049         cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
1050         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1051         if (status)
1052                 i40iw_pr_err("CQP-OP Query FPM fail");
1053         return status;
1054 }
1055
1056 /**
1057  * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1058  * @dev: hardware control device structure
1059  * @values_mem: buffer with fpm values
1060  * @hmc_fn_id: function id for fpm
1061  */
1062 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1063                                                        struct i40iw_dma_mem *values_mem,
1064                                                        u8 hmc_fn_id)
1065 {
1066         enum i40iw_status_code status;
1067         struct i40iw_cqp_request *cqp_request;
1068         struct cqp_commands_info *cqp_info;
1069         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1070
1071         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1072         if (!cqp_request)
1073                 return I40IW_ERR_NO_MEMORY;
1074         cqp_info = &cqp_request->info;
1075         cqp_request->param = NULL;
1076         cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1077         cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1078         cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1079         cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1080         cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1081         cqp_info->post_sq = 1;
1082         cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1083         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1084         if (status)
1085                 i40iw_pr_err("CQP-OP Commit FPM fail");
1086         return status;
1087 }
1088
1089 /**
1090  * i40iw_vf_wait_vchnl_resp - wait for channel msg
1091  * @iwdev: function's device struct
1092  */
1093 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1094 {
1095         struct i40iw_device *iwdev = dev->back_dev;
1096         int timeout_ret;
1097
1098         i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1099                     __func__, __LINE__, dev, iwdev);
1100
1101         atomic_set(&iwdev->vchnl_msgs, 2);
1102         timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1103                                          (atomic_read(&iwdev->vchnl_msgs) == 1),
1104                                          I40IW_VCHNL_EVENT_TIMEOUT);
1105         atomic_dec(&iwdev->vchnl_msgs);
1106         if (!timeout_ret) {
1107                 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1108                 atomic_set(&iwdev->vchnl_msgs, 0);
1109                 dev->vchnl_up = false;
1110                 return I40IW_ERR_TIMEOUT;
1111         }
1112         wake_up(&dev->vf_reqs);
1113         return 0;
1114 }
1115
1116 /**
1117  * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1118  * @dev: device pointer
1119  * @cq: pointer to created cq
1120  */
1121 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1122                                                struct i40iw_sc_cq *cq)
1123 {
1124         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1125         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1126         struct i40iw_cqp_request *cqp_request;
1127         struct cqp_commands_info *cqp_info;
1128         enum i40iw_status_code status;
1129
1130         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1131         if (!cqp_request)
1132                 return I40IW_ERR_NO_MEMORY;
1133
1134         cqp_info = &cqp_request->info;
1135         cqp_info->cqp_cmd = OP_CQ_CREATE;
1136         cqp_info->post_sq = 1;
1137         cqp_info->in.u.cq_create.cq = cq;
1138         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1139         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1140         if (status)
1141                 i40iw_pr_err("CQP-OP Create QP fail");
1142
1143         return status;
1144 }
1145
1146 /**
1147  * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1148  * @dev: device pointer
1149  * @qp: pointer to created qp
1150  */
1151 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1152                                                struct i40iw_sc_qp *qp)
1153 {
1154         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1155         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1156         struct i40iw_cqp_request *cqp_request;
1157         struct cqp_commands_info *cqp_info;
1158         struct i40iw_create_qp_info *qp_info;
1159         enum i40iw_status_code status;
1160
1161         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1162         if (!cqp_request)
1163                 return I40IW_ERR_NO_MEMORY;
1164
1165         cqp_info = &cqp_request->info;
1166         qp_info = &cqp_request->info.in.u.qp_create.info;
1167
1168         memset(qp_info, 0, sizeof(*qp_info));
1169
1170         qp_info->cq_num_valid = true;
1171         qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1172
1173         cqp_info->cqp_cmd = OP_QP_CREATE;
1174         cqp_info->post_sq = 1;
1175         cqp_info->in.u.qp_create.qp = qp;
1176         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1177         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1178         if (status)
1179                 i40iw_pr_err("CQP-OP QP create fail");
1180         return status;
1181 }
1182
1183 /**
1184  * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1185  * @dev: device pointer
1186  * @cq: pointer to cq
1187  */
1188 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1189 {
1190         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1191
1192         i40iw_cq_wq_destroy(iwdev, cq);
1193 }
1194
1195 /**
1196  * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1197  * @dev: device pointer
1198  * @qp: pointer to qp
1199  */
1200 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1201 {
1202         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1203         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1204         struct i40iw_cqp_request *cqp_request;
1205         struct cqp_commands_info *cqp_info;
1206         enum i40iw_status_code status;
1207
1208         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1209         if (!cqp_request)
1210                 return;
1211
1212         cqp_info = &cqp_request->info;
1213         memset(cqp_info, 0, sizeof(*cqp_info));
1214
1215         cqp_info->cqp_cmd = OP_QP_DESTROY;
1216         cqp_info->post_sq = 1;
1217         cqp_info->in.u.qp_destroy.qp = qp;
1218         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1219         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1220         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1221         if (status)
1222                 i40iw_pr_err("CQP QP_DESTROY fail");
1223 }
1224
1225
1226 /**
1227  * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1228  * @dev: hardware control device structure
1229  * @qp: hardware control qp
1230  */
1231 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1232 {
1233         struct i40iw_qp_flush_info info;
1234         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1235
1236         i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1237         memset(&info, 0, sizeof(info));
1238         info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1239         info.generate_ae = true;
1240         info.ae_source = 0x3;
1241         (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1242 }
1243
1244 /**
1245  * i40iw_init_hash_desc - initialize hash for crc calculation
1246  * @desc: cryption type
1247  */
1248 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1249 {
1250         struct crypto_shash *tfm;
1251         struct shash_desc *tdesc;
1252
1253         tfm = crypto_alloc_shash("crc32c", 0, 0);
1254         if (IS_ERR(tfm))
1255                 return I40IW_ERR_MPA_CRC;
1256
1257         tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1258                         GFP_KERNEL);
1259         if (!tdesc) {
1260                 crypto_free_shash(tfm);
1261                 return I40IW_ERR_MPA_CRC;
1262         }
1263         tdesc->tfm = tfm;
1264         *desc = tdesc;
1265
1266         return 0;
1267 }
1268
1269 /**
1270  * i40iw_free_hash_desc - free hash desc
1271  * @desc: to be freed
1272  */
1273 void i40iw_free_hash_desc(struct shash_desc *desc)
1274 {
1275         if (desc) {
1276                 crypto_free_shash(desc->tfm);
1277                 kfree(desc);
1278         }
1279 }
1280
1281 /**
1282  * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1283  * @dev: hardware control device structure
1284  * @mem: buffer ptr for fpm to be allocated
1285  * @return: memory allocation status
1286  */
1287 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1288                                                  struct i40iw_dma_mem *mem)
1289 {
1290         enum i40iw_status_code status;
1291         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1292
1293         status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1294                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1295         return status;
1296 }
1297
1298 /**
1299  * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1300  * @desc: desc for hash
1301  * @addr: address of buffer for crc
1302  * @length: length of buffer
1303  * @value: value to be compared
1304  */
1305 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1306                                               void *addr,
1307                                               u32 length,
1308                                               u32 value)
1309 {
1310         u32 crc = 0;
1311         int ret;
1312         enum i40iw_status_code ret_code = 0;
1313
1314         crypto_shash_init(desc);
1315         ret = crypto_shash_update(desc, addr, length);
1316         if (!ret)
1317                 crypto_shash_final(desc, (u8 *)&crc);
1318         if (crc != value) {
1319                 i40iw_pr_err("mpa crc check fail\n");
1320                 ret_code = I40IW_ERR_MPA_CRC;
1321         }
1322         return ret_code;
1323 }
1324
1325 /**
1326  * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1327  * @dev: hardware control device structure
1328  * @buf: receive puda buffer on exception q
1329  */
1330 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1331                                      struct i40iw_puda_buf *buf)
1332 {
1333         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1334         struct i40iw_qp *iwqp;
1335         struct i40iw_cm_node *cm_node;
1336         u32 loc_addr[4], rem_addr[4];
1337         u16 loc_port, rem_port;
1338         struct ipv6hdr *ip6h;
1339         struct iphdr *iph = (struct iphdr *)buf->iph;
1340         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1341
1342         if (iph->version == 4) {
1343                 memset(loc_addr, 0, sizeof(loc_addr));
1344                 loc_addr[0] = ntohl(iph->daddr);
1345                 memset(rem_addr, 0, sizeof(rem_addr));
1346                 rem_addr[0] = ntohl(iph->saddr);
1347         } else {
1348                 ip6h = (struct ipv6hdr *)buf->iph;
1349                 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1350                 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1351         }
1352         loc_port = ntohs(tcph->dest);
1353         rem_port = ntohs(tcph->source);
1354
1355         cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1356                                   loc_addr, false);
1357         if (!cm_node)
1358                 return NULL;
1359         iwqp = cm_node->iwqp;
1360         return &iwqp->sc_qp;
1361 }
1362
1363 /**
1364  * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1365  * @buf: puda to update
1366  * @length: length of buffer
1367  * @seqnum: seq number for tcp
1368  */
1369 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1370 {
1371         struct tcphdr *tcph;
1372         struct iphdr *iph;
1373         u16 iphlen;
1374         u16 packetsize;
1375         u8 *addr = (u8 *)buf->mem.va;
1376
1377         iphlen = (buf->ipv4) ? 20 : 40;
1378         iph = (struct iphdr *)(addr + buf->maclen);
1379         tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1380         packetsize = length + buf->tcphlen + iphlen;
1381
1382         iph->tot_len = htons(packetsize);
1383         tcph->seq = htonl(seqnum);
1384 }
1385
1386 /**
1387  * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1388  * @info: to get information
1389  * @buf: puda buffer
1390  */
1391 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1392                                                  struct i40iw_puda_buf *buf)
1393 {
1394         struct iphdr *iph;
1395         struct ipv6hdr *ip6h;
1396         struct tcphdr *tcph;
1397         u16 iphlen;
1398         u16 pkt_len;
1399         u8 *mem = (u8 *)buf->mem.va;
1400         struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1401
1402         if (ethh->h_proto == htons(0x8100)) {
1403                 info->vlan_valid = true;
1404                 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1405         }
1406         buf->maclen = (info->vlan_valid) ? 18 : 14;
1407         iphlen = (info->l3proto) ? 40 : 20;
1408         buf->ipv4 = (info->l3proto) ? false : true;
1409         buf->iph = mem + buf->maclen;
1410         iph = (struct iphdr *)buf->iph;
1411
1412         buf->tcph = buf->iph + iphlen;
1413         tcph = (struct tcphdr *)buf->tcph;
1414
1415         if (buf->ipv4) {
1416                 pkt_len = ntohs(iph->tot_len);
1417         } else {
1418                 ip6h = (struct ipv6hdr *)buf->iph;
1419                 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1420         }
1421
1422         buf->totallen = pkt_len + buf->maclen;
1423
1424         if (info->payload_len < buf->totallen) {
1425                 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1426                              info->payload_len, buf->totallen);
1427                 return I40IW_ERR_INVALID_SIZE;
1428         }
1429
1430         buf->tcphlen = (tcph->doff) << 2;
1431         buf->datalen = pkt_len - iphlen - buf->tcphlen;
1432         buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1433         buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1434         buf->seqnum = ntohl(tcph->seq);
1435         return 0;
1436 }
1437
1438 /**
1439  * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1440  * @vsi: pointer to the vsi structure
1441  */
1442 static void i40iw_hw_stats_timeout(unsigned long vsi)
1443 {
1444         struct i40iw_sc_vsi *sc_vsi =  (struct i40iw_sc_vsi *)vsi;
1445         struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1446         struct i40iw_vsi_pestat *pf_devstat = sc_vsi->pestat;
1447         struct i40iw_vsi_pestat *vf_devstat = NULL;
1448         u16 iw_vf_idx;
1449         unsigned long flags;
1450
1451         /*PF*/
1452         i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1453
1454         for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1455                 spin_lock_irqsave(&pf_devstat->lock, flags);
1456                 if (pf_dev->vf_dev[iw_vf_idx]) {
1457                         if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1458                                 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1459                                 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1460                         }
1461                 }
1462                 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1463         }
1464
1465         mod_timer(&pf_devstat->stats_timer,
1466                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1467 }
1468
1469 /**
1470  * i40iw_hw_stats_start_timer - Start periodic stats timer
1471  * @vsi: pointer to the vsi structure
1472  */
1473 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1474 {
1475         struct i40iw_vsi_pestat *devstat = vsi->pestat;
1476
1477         setup_timer(&devstat->stats_timer, i40iw_hw_stats_timeout,
1478                     (unsigned long)vsi);
1479         mod_timer(&devstat->stats_timer,
1480                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1481 }
1482
1483 /**
1484  * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1485  * @vsi: pointer to the vsi structure
1486  */
1487 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1488 {
1489         struct i40iw_vsi_pestat *devstat = vsi->pestat;
1490
1491         del_timer_sync(&devstat->stats_timer);
1492 }