drivers/infiniband/hw/irdma/utils.c

   1 // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
   2 /* Copyright (c) 2015 - 2021 Intel Corporation */
   3 #include "main.h"
   4
   5 /**
   6  * irdma_arp_table -manage arp table
   7  * @rf: RDMA PCI function
   8  * @ip_addr: ip address for device
   9  * @ipv4: IPv4 flag
  10  * @mac_addr: mac address ptr
  11  * @action: modify, delete or add
  12  */
  13 int irdma_arp_table(struct irdma_pci_f *rf, u32 *ip_addr, bool ipv4,
  14                     const u8 *mac_addr, u32 action)
  15 {
  16         unsigned long flags;
  17         int arp_index;
  18         u32 ip[4] = {};
  19
  20         if (ipv4)
  21                 ip[0] = *ip_addr;
  22         else
  23                 memcpy(ip, ip_addr, sizeof(ip));
  24
  25         spin_lock_irqsave(&rf->arp_lock, flags);
  26         for (arp_index = 0; (u32)arp_index < rf->arp_table_size; arp_index++) {
  27                 if (!memcmp(rf->arp_table[arp_index].ip_addr, ip, sizeof(ip)))
  28                         break;
  29         }
  30
  31         switch (action) {
  32         case IRDMA_ARP_ADD:
  33                 if (arp_index != rf->arp_table_size) {
  34                         arp_index = -1;
  35                         break;
  36                 }
  37
  38                 arp_index = 0;
  39                 if (irdma_alloc_rsrc(rf, rf->allocated_arps, rf->arp_table_size,
  40                                      (u32 *)&arp_index, &rf->next_arp_index)) {
  41                         arp_index = -1;
  42                         break;
  43                 }
  44
  45                 memcpy(rf->arp_table[arp_index].ip_addr, ip,
  46                        sizeof(rf->arp_table[arp_index].ip_addr));
  47                 ether_addr_copy(rf->arp_table[arp_index].mac_addr, mac_addr);
  48                 break;
  49         case IRDMA_ARP_RESOLVE:
  50                 if (arp_index == rf->arp_table_size)
  51                         arp_index = -1;
  52                 break;
  53         case IRDMA_ARP_DELETE:
  54                 if (arp_index == rf->arp_table_size) {
  55                         arp_index = -1;
  56                         break;
  57                 }
  58
  59                 memset(rf->arp_table[arp_index].ip_addr, 0,
  60                        sizeof(rf->arp_table[arp_index].ip_addr));
  61                 eth_zero_addr(rf->arp_table[arp_index].mac_addr);
  62                 irdma_free_rsrc(rf, rf->allocated_arps, arp_index);
  63                 break;
  64         default:
  65                 arp_index = -1;
  66                 break;
  67         }
  68
  69         spin_unlock_irqrestore(&rf->arp_lock, flags);
  70         return arp_index;
  71 }
  72
  73 /**
  74  * irdma_add_arp - add a new arp entry if needed
  75  * @rf: RDMA function
  76  * @ip: IP address
  77  * @ipv4: IPv4 flag
  78  * @mac: MAC address
  79  */
  80 int irdma_add_arp(struct irdma_pci_f *rf, u32 *ip, bool ipv4, const u8 *mac)
  81 {
  82         int arpidx;
  83
  84         arpidx = irdma_arp_table(rf, &ip[0], ipv4, NULL, IRDMA_ARP_RESOLVE);
  85         if (arpidx >= 0) {
  86                 if (ether_addr_equal(rf->arp_table[arpidx].mac_addr, mac))
  87                         return arpidx;
  88
  89                 irdma_manage_arp_cache(rf, rf->arp_table[arpidx].mac_addr, ip,
  90                                        ipv4, IRDMA_ARP_DELETE);
  91         }
  92
  93         irdma_manage_arp_cache(rf, mac, ip, ipv4, IRDMA_ARP_ADD);
  94
  95         return irdma_arp_table(rf, ip, ipv4, NULL, IRDMA_ARP_RESOLVE);
  96 }
  97
  98 /**
  99  * wr32 - write 32 bits to hw register
 100  * @hw: hardware information including registers
 101  * @reg: register offset
 102  * @val: value to write to register
 103  */
 104 inline void wr32(struct irdma_hw *hw, u32 reg, u32 val)
 105 {
 106         writel(val, hw->hw_addr + reg);
 107 }
 108
 109 /**
 110  * rd32 - read a 32 bit hw register
 111  * @hw: hardware information including registers
 112  * @reg: register offset
 113  *
 114  * Return value of register content
 115  */
 116 inline u32 rd32(struct irdma_hw *hw, u32 reg)
 117 {
 118         return readl(hw->hw_addr + reg);
 119 }
 120
 121 /**
 122  * rd64 - read a 64 bit hw register
 123  * @hw: hardware information including registers
 124  * @reg: register offset
 125  *
 126  * Return value of register content
 127  */
 128 inline u64 rd64(struct irdma_hw *hw, u32 reg)
 129 {
 130         return readq(hw->hw_addr + reg);
 131 }
 132
 133 static void irdma_gid_change_event(struct ib_device *ibdev)
 134 {
 135         struct ib_event ib_event;
 136
 137         ib_event.event = IB_EVENT_GID_CHANGE;
 138         ib_event.device = ibdev;
 139         ib_event.element.port_num = 1;
 140         ib_dispatch_event(&ib_event);
 141 }
 142
 143 /**
 144  * irdma_inetaddr_event - system notifier for ipv4 addr events
 145  * @notifier: not used
 146  * @event: event for notifier
 147  * @ptr: if address
 148  */
 149 int irdma_inetaddr_event(struct notifier_block *notifier, unsigned long event,
 150                          void *ptr)
 151 {
 152         struct in_ifaddr *ifa = ptr;
 153         struct net_device *real_dev, *netdev = ifa->ifa_dev->dev;
 154         struct irdma_device *iwdev;
 155         struct ib_device *ibdev;
 156         u32 local_ipaddr;
 157
 158         real_dev = rdma_vlan_dev_real_dev(netdev);
 159         if (!real_dev)
 160                 real_dev = netdev;
 161
 162         ibdev = ib_device_get_by_netdev(real_dev, RDMA_DRIVER_IRDMA);
 163         if (!ibdev)
 164                 return NOTIFY_DONE;
 165
 166         iwdev = to_iwdev(ibdev);
 167         local_ipaddr = ntohl(ifa->ifa_address);
 168         ibdev_dbg(&iwdev->ibdev,
 169                   "DEV: netdev %p event %lu local_ip=%pI4 MAC=%pM\n", real_dev,
 170                   event, &local_ipaddr, real_dev->dev_addr);
 171         switch (event) {
 172         case NETDEV_DOWN:
 173                 irdma_manage_arp_cache(iwdev->rf, real_dev->dev_addr,
 174                                        &local_ipaddr, true, IRDMA_ARP_DELETE);
 175                 irdma_if_notify(iwdev, real_dev, &local_ipaddr, true, false);
 176                 irdma_gid_change_event(&iwdev->ibdev);
 177                 break;
 178         case NETDEV_UP:
 179         case NETDEV_CHANGEADDR:
 180                 irdma_add_arp(iwdev->rf, &local_ipaddr, true, real_dev->dev_addr);
 181                 irdma_if_notify(iwdev, real_dev, &local_ipaddr, true, true);
 182                 irdma_gid_change_event(&iwdev->ibdev);
 183                 break;
 184         default:
 185                 break;
 186         }
 187
 188         ib_device_put(ibdev);
 189
 190         return NOTIFY_DONE;
 191 }
 192
 193 /**
 194  * irdma_inet6addr_event - system notifier for ipv6 addr events
 195  * @notifier: not used
 196  * @event: event for notifier
 197  * @ptr: if address
 198  */
 199 int irdma_inet6addr_event(struct notifier_block *notifier, unsigned long event,
 200                           void *ptr)
 201 {
 202         struct inet6_ifaddr *ifa = ptr;
 203         struct net_device *real_dev, *netdev = ifa->idev->dev;
 204         struct irdma_device *iwdev;
 205         struct ib_device *ibdev;
 206         u32 local_ipaddr6[4];
 207
 208         real_dev = rdma_vlan_dev_real_dev(netdev);
 209         if (!real_dev)
 210                 real_dev = netdev;
 211
 212         ibdev = ib_device_get_by_netdev(real_dev, RDMA_DRIVER_IRDMA);
 213         if (!ibdev)
 214                 return NOTIFY_DONE;
 215
 216         iwdev = to_iwdev(ibdev);
 217         irdma_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
 218         ibdev_dbg(&iwdev->ibdev,
 219                   "DEV: netdev %p event %lu local_ip=%pI6 MAC=%pM\n", real_dev,
 220                   event, local_ipaddr6, real_dev->dev_addr);
 221         switch (event) {
 222         case NETDEV_DOWN:
 223                 irdma_manage_arp_cache(iwdev->rf, real_dev->dev_addr,
 224                                        local_ipaddr6, false, IRDMA_ARP_DELETE);
 225                 irdma_if_notify(iwdev, real_dev, local_ipaddr6, false, false);
 226                 irdma_gid_change_event(&iwdev->ibdev);
 227                 break;
 228         case NETDEV_UP:
 229         case NETDEV_CHANGEADDR:
 230                 irdma_add_arp(iwdev->rf, local_ipaddr6, false,
 231                               real_dev->dev_addr);
 232                 irdma_if_notify(iwdev, real_dev, local_ipaddr6, false, true);
 233                 irdma_gid_change_event(&iwdev->ibdev);
 234                 break;
 235         default:
 236                 break;
 237         }
 238
 239         ib_device_put(ibdev);
 240
 241         return NOTIFY_DONE;
 242 }
 243
 244 /**
 245  * irdma_net_event - system notifier for net events
 246  * @notifier: not used
 247  * @event: event for notifier
 248  * @ptr: neighbor
 249  */
 250 int irdma_net_event(struct notifier_block *notifier, unsigned long event,
 251                     void *ptr)
 252 {
 253         struct neighbour *neigh = ptr;
 254         struct net_device *real_dev, *netdev = (struct net_device *)neigh->dev;
 255         struct irdma_device *iwdev;
 256         struct ib_device *ibdev;
 257         __be32 *p;
 258         u32 local_ipaddr[4] = {};
 259         bool ipv4 = true;
 260
 261         switch (event) {
 262         case NETEVENT_NEIGH_UPDATE:
 263                 real_dev = rdma_vlan_dev_real_dev(netdev);
 264                 if (!real_dev)
 265                         real_dev = netdev;
 266                 ibdev = ib_device_get_by_netdev(real_dev, RDMA_DRIVER_IRDMA);
 267                 if (!ibdev)
 268                         return NOTIFY_DONE;
 269
 270                 iwdev = to_iwdev(ibdev);
 271                 p = (__be32 *)neigh->primary_key;
 272                 if (neigh->tbl->family == AF_INET6) {
 273                         ipv4 = false;
 274                         irdma_copy_ip_ntohl(local_ipaddr, p);
 275                 } else {
 276                         local_ipaddr[0] = ntohl(*p);
 277                 }
 278
 279                 ibdev_dbg(&iwdev->ibdev,
 280                           "DEV: netdev %p state %d local_ip=%pI4 MAC=%pM\n",
 281                           iwdev->netdev, neigh->nud_state, local_ipaddr,
 282                           neigh->ha);
 283
 284                 if (neigh->nud_state & NUD_VALID)
 285                         irdma_add_arp(iwdev->rf, local_ipaddr, ipv4, neigh->ha);
 286
 287                 else
 288                         irdma_manage_arp_cache(iwdev->rf, neigh->ha,
 289                                                local_ipaddr, ipv4,
 290                                                IRDMA_ARP_DELETE);
 291                 ib_device_put(ibdev);
 292                 break;
 293         default:
 294                 break;
 295         }
 296
 297         return NOTIFY_DONE;
 298 }
 299
 300 /**
 301  * irdma_netdevice_event - system notifier for netdev events
 302  * @notifier: not used
 303  * @event: event for notifier
 304  * @ptr: netdev
 305  */
 306 int irdma_netdevice_event(struct notifier_block *notifier, unsigned long event,
 307                           void *ptr)
 308 {
 309         struct irdma_device *iwdev;
 310         struct ib_device *ibdev;
 311         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
 312
 313         ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_IRDMA);
 314         if (!ibdev)
 315                 return NOTIFY_DONE;
 316
 317         iwdev = to_iwdev(ibdev);
 318         iwdev->iw_status = 1;
 319         switch (event) {
 320         case NETDEV_DOWN:
 321                 iwdev->iw_status = 0;
 322                 fallthrough;
 323         case NETDEV_UP:
 324                 irdma_port_ibevent(iwdev);
 325                 break;
 326         default:
 327                 break;
 328         }
 329         ib_device_put(ibdev);
 330
 331         return NOTIFY_DONE;
 332 }
 333
 334 /**
 335  * irdma_add_ipv6_addr - add ipv6 address to the hw arp table
 336  * @iwdev: irdma device
 337  */
 338 static void irdma_add_ipv6_addr(struct irdma_device *iwdev)
 339 {
 340         struct net_device *ip_dev;
 341         struct inet6_dev *idev;
 342         struct inet6_ifaddr *ifp, *tmp;
 343         u32 local_ipaddr6[4];
 344
 345         rcu_read_lock();
 346         for_each_netdev_rcu (&init_net, ip_dev) {
 347                 if (((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF &&
 348                       rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev) ||
 349                       ip_dev == iwdev->netdev) &&
 350                       (READ_ONCE(ip_dev->flags) & IFF_UP)) {
 351                         idev = __in6_dev_get(ip_dev);
 352                         if (!idev) {
 353                                 ibdev_err(&iwdev->ibdev, "ipv6 inet device not found\n");
 354                                 break;
 355                         }
 356                         list_for_each_entry_safe (ifp, tmp, &idev->addr_list,
 357                                                   if_list) {
 358                                 ibdev_dbg(&iwdev->ibdev,
 359                                           "INIT: IP=%pI6, vlan_id=%d, MAC=%pM\n",
 360                                           &ifp->addr,
 361                                           rdma_vlan_dev_vlan_id(ip_dev),
 362                                           ip_dev->dev_addr);
 363
 364                                 irdma_copy_ip_ntohl(local_ipaddr6,
 365                                                     ifp->addr.in6_u.u6_addr32);
 366                                 irdma_manage_arp_cache(iwdev->rf,
 367                                                        ip_dev->dev_addr,
 368                                                        local_ipaddr6, false,
 369                                                        IRDMA_ARP_ADD);
 370                         }
 371                 }
 372         }
 373         rcu_read_unlock();
 374 }
 375
 376 /**
 377  * irdma_add_ipv4_addr - add ipv4 address to the hw arp table
 378  * @iwdev: irdma device
 379  */
 380 static void irdma_add_ipv4_addr(struct irdma_device *iwdev)
 381 {
 382         struct net_device *dev;
 383         struct in_device *idev;
 384         u32 ip_addr;
 385
 386         rcu_read_lock();
 387         for_each_netdev_rcu (&init_net, dev) {
 388                 if (((rdma_vlan_dev_vlan_id(dev) < 0xFFFF &&
 389                       rdma_vlan_dev_real_dev(dev) == iwdev->netdev) ||
 390                       dev == iwdev->netdev) && (READ_ONCE(dev->flags) & IFF_UP)) {
 391                         const struct in_ifaddr *ifa;
 392
 393                         idev = __in_dev_get_rcu(dev);
 394                         if (!idev)
 395                                 continue;
 396
 397                         in_dev_for_each_ifa_rcu(ifa, idev) {
 398                                 ibdev_dbg(&iwdev->ibdev, "CM: IP=%pI4, vlan_id=%d, MAC=%pM\n",
 399                                           &ifa->ifa_address, rdma_vlan_dev_vlan_id(dev),
 400                                           dev->dev_addr);
 401
 402                                 ip_addr = ntohl(ifa->ifa_address);
 403                                 irdma_manage_arp_cache(iwdev->rf, dev->dev_addr,
 404                                                        &ip_addr, true,
 405                                                        IRDMA_ARP_ADD);
 406                         }
 407                 }
 408         }
 409         rcu_read_unlock();
 410 }
 411
 412 /**
 413  * irdma_add_ip - add ip addresses
 414  * @iwdev: irdma device
 415  *
 416  * Add ipv4/ipv6 addresses to the arp cache
 417  */
 418 void irdma_add_ip(struct irdma_device *iwdev)
 419 {
 420         irdma_add_ipv4_addr(iwdev);
 421         irdma_add_ipv6_addr(iwdev);
 422 }
 423
 424 /**
 425  * irdma_alloc_and_get_cqp_request - get cqp struct
 426  * @cqp: device cqp ptr
 427  * @wait: cqp to be used in wait mode
 428  */
 429 struct irdma_cqp_request *irdma_alloc_and_get_cqp_request(struct irdma_cqp *cqp,
 430                                                           bool wait)
 431 {
 432         struct irdma_cqp_request *cqp_request = NULL;
 433         unsigned long flags;
 434
 435         spin_lock_irqsave(&cqp->req_lock, flags);
 436         if (!list_empty(&cqp->cqp_avail_reqs)) {
 437                 cqp_request = list_first_entry(&cqp->cqp_avail_reqs,
 438                                                struct irdma_cqp_request, list);
 439                 list_del_init(&cqp_request->list);
 440         }
 441         spin_unlock_irqrestore(&cqp->req_lock, flags);
 442         if (!cqp_request) {
 443                 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
 444                 if (cqp_request) {
 445                         cqp_request->dynamic = true;
 446                         if (wait)
 447                                 init_waitqueue_head(&cqp_request->waitq);
 448                 }
 449         }
 450         if (!cqp_request) {
 451                 ibdev_dbg(to_ibdev(cqp->sc_cqp.dev), "ERR: CQP Request Fail: No Memory");
 452                 return NULL;
 453         }
 454
 455         cqp_request->waiting = wait;
 456         refcount_set(&cqp_request->refcnt, 1);
 457         memset(&cqp_request->compl_info, 0, sizeof(cqp_request->compl_info));
 458
 459         return cqp_request;
 460 }
 461
 462 /**
 463  * irdma_get_cqp_request - increase refcount for cqp_request
 464  * @cqp_request: pointer to cqp_request instance
 465  */
 466 static inline void irdma_get_cqp_request(struct irdma_cqp_request *cqp_request)
 467 {
 468         refcount_inc(&cqp_request->refcnt);
 469 }
 470
 471 /**
 472  * irdma_free_cqp_request - free cqp request
 473  * @cqp: cqp ptr
 474  * @cqp_request: to be put back in cqp list
 475  */
 476 void irdma_free_cqp_request(struct irdma_cqp *cqp,
 477                             struct irdma_cqp_request *cqp_request)
 478 {
 479         unsigned long flags;
 480
 481         if (cqp_request->dynamic) {
 482                 kfree(cqp_request);
 483         } else {
 484                 WRITE_ONCE(cqp_request->request_done, false);
 485                 cqp_request->callback_fcn = NULL;
 486                 cqp_request->waiting = false;
 487
 488                 spin_lock_irqsave(&cqp->req_lock, flags);
 489                 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
 490                 spin_unlock_irqrestore(&cqp->req_lock, flags);
 491         }
 492         wake_up(&cqp->remove_wq);
 493 }
 494
 495 /**
 496  * irdma_put_cqp_request - dec ref count and free if 0
 497  * @cqp: cqp ptr
 498  * @cqp_request: to be put back in cqp list
 499  */
 500 void irdma_put_cqp_request(struct irdma_cqp *cqp,
 501                            struct irdma_cqp_request *cqp_request)
 502 {
 503         if (refcount_dec_and_test(&cqp_request->refcnt))
 504                 irdma_free_cqp_request(cqp, cqp_request);
 505 }
 506
 507 /**
 508  * irdma_free_pending_cqp_request -free pending cqp request objs
 509  * @cqp: cqp ptr
 510  * @cqp_request: to be put back in cqp list
 511  */
 512 static void
 513 irdma_free_pending_cqp_request(struct irdma_cqp *cqp,
 514                                struct irdma_cqp_request *cqp_request)
 515 {
 516         if (cqp_request->waiting) {
 517                 cqp_request->compl_info.error = true;
 518                 WRITE_ONCE(cqp_request->request_done, true);
 519                 wake_up(&cqp_request->waitq);
 520         }
 521         wait_event_timeout(cqp->remove_wq,
 522                            refcount_read(&cqp_request->refcnt) == 1, 1000);
 523         irdma_put_cqp_request(cqp, cqp_request);
 524 }
 525
 526 /**
 527  * irdma_cleanup_pending_cqp_op - clean-up cqp with no
 528  * completions
 529  * @rf: RDMA PCI function
 530  */
 531 void irdma_cleanup_pending_cqp_op(struct irdma_pci_f *rf)
 532 {
 533         struct irdma_sc_dev *dev = &rf->sc_dev;
 534         struct irdma_cqp *cqp = &rf->cqp;
 535         struct irdma_cqp_request *cqp_request = NULL;
 536         struct cqp_cmds_info *pcmdinfo = NULL;
 537         u32 i, pending_work, wqe_idx;
 538
 539         pending_work = IRDMA_RING_USED_QUANTA(cqp->sc_cqp.sq_ring);
 540         wqe_idx = IRDMA_RING_CURRENT_TAIL(cqp->sc_cqp.sq_ring);
 541         for (i = 0; i < pending_work; i++) {
 542                 cqp_request = (struct irdma_cqp_request *)(unsigned long)
 543                                       cqp->scratch_array[wqe_idx];
 544                 if (cqp_request)
 545                         irdma_free_pending_cqp_request(cqp, cqp_request);
 546                 wqe_idx = (wqe_idx + 1) % IRDMA_RING_SIZE(cqp->sc_cqp.sq_ring);
 547         }
 548
 549         while (!list_empty(&dev->cqp_cmd_head)) {
 550                 pcmdinfo = irdma_remove_cqp_head(dev);
 551                 cqp_request =
 552                         container_of(pcmdinfo, struct irdma_cqp_request, info);
 553                 if (cqp_request)
 554                         irdma_free_pending_cqp_request(cqp, cqp_request);
 555         }
 556 }
 557
 558 /**
 559  * irdma_wait_event - wait for completion
 560  * @rf: RDMA PCI function
 561  * @cqp_request: cqp request to wait
 562  */
 563 static int irdma_wait_event(struct irdma_pci_f *rf,
 564                             struct irdma_cqp_request *cqp_request)
 565 {
 566         struct irdma_cqp_timeout cqp_timeout = {};
 567         bool cqp_error = false;
 568         int err_code = 0;
 569
 570         cqp_timeout.compl_cqp_cmds = atomic64_read(&rf->sc_dev.cqp->completed_ops);
 571         do {
 572                 irdma_cqp_ce_handler(rf, &rf->ccq.sc_cq);
 573                 if (wait_event_timeout(cqp_request->waitq,
 574                                        READ_ONCE(cqp_request->request_done),
 575                                        msecs_to_jiffies(CQP_COMPL_WAIT_TIME_MS)))
 576                         break;
 577
 578                 irdma_check_cqp_progress(&cqp_timeout, &rf->sc_dev);
 579
 580                 if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
 581                         continue;
 582
 583                 if (!rf->reset) {
 584                         rf->reset = true;
 585                         rf->gen_ops.request_reset(rf);
 586                 }
 587                 return -ETIMEDOUT;
 588         } while (1);
 589
 590         cqp_error = cqp_request->compl_info.error;
 591         if (cqp_error) {
 592                 err_code = -EIO;
 593                 if (cqp_request->compl_info.maj_err_code == 0xFFFF) {
 594                         if (cqp_request->compl_info.min_err_code == 0x8002)
 595                                 err_code = -EBUSY;
 596                         else if (cqp_request->compl_info.min_err_code == 0x8029) {
 597                                 if (!rf->reset) {
 598                                         rf->reset = true;
 599                                         rf->gen_ops.request_reset(rf);
 600                                 }
 601                         }
 602                 }
 603         }
 604
 605         return err_code;
 606 }
 607
 608 static const char *const irdma_cqp_cmd_names[IRDMA_MAX_CQP_OPS] = {
 609         [IRDMA_OP_CEQ_DESTROY] = "Destroy CEQ Cmd",
 610         [IRDMA_OP_AEQ_DESTROY] = "Destroy AEQ Cmd",
 611         [IRDMA_OP_DELETE_ARP_CACHE_ENTRY] = "Delete ARP Cache Cmd",
 612         [IRDMA_OP_MANAGE_APBVT_ENTRY] = "Manage APBV Table Entry Cmd",
 613         [IRDMA_OP_CEQ_CREATE] = "CEQ Create Cmd",
 614         [IRDMA_OP_AEQ_CREATE] = "AEQ Destroy Cmd",
 615         [IRDMA_OP_MANAGE_QHASH_TABLE_ENTRY] = "Manage Quad Hash Table Entry Cmd",
 616         [IRDMA_OP_QP_MODIFY] = "Modify QP Cmd",
 617         [IRDMA_OP_QP_UPLOAD_CONTEXT] = "Upload Context Cmd",
 618         [IRDMA_OP_CQ_CREATE] = "Create CQ Cmd",
 619         [IRDMA_OP_CQ_DESTROY] = "Destroy CQ Cmd",
 620         [IRDMA_OP_QP_CREATE] = "Create QP Cmd",
 621         [IRDMA_OP_QP_DESTROY] = "Destroy QP Cmd",
 622         [IRDMA_OP_ALLOC_STAG] = "Allocate STag Cmd",
 623         [IRDMA_OP_MR_REG_NON_SHARED] = "Register Non-Shared MR Cmd",
 624         [IRDMA_OP_DEALLOC_STAG] = "Deallocate STag Cmd",
 625         [IRDMA_OP_MW_ALLOC] = "Allocate Memory Window Cmd",
 626         [IRDMA_OP_QP_FLUSH_WQES] = "Flush QP Cmd",
 627         [IRDMA_OP_ADD_ARP_CACHE_ENTRY] = "Add ARP Cache Cmd",
 628         [IRDMA_OP_MANAGE_PUSH_PAGE] = "Manage Push Page Cmd",
 629         [IRDMA_OP_UPDATE_PE_SDS] = "Update PE SDs Cmd",
 630         [IRDMA_OP_MANAGE_HMC_PM_FUNC_TABLE] = "Manage HMC PM Function Table Cmd",
 631         [IRDMA_OP_SUSPEND] = "Suspend QP Cmd",
 632         [IRDMA_OP_RESUME] = "Resume QP Cmd",
 633         [IRDMA_OP_MANAGE_VF_PBLE_BP] = "Manage VF PBLE Backing Pages Cmd",
 634         [IRDMA_OP_QUERY_FPM_VAL] = "Query FPM Values Cmd",
 635         [IRDMA_OP_COMMIT_FPM_VAL] = "Commit FPM Values Cmd",
 636         [IRDMA_OP_AH_CREATE] = "Create Address Handle Cmd",
 637         [IRDMA_OP_AH_MODIFY] = "Modify Address Handle Cmd",
 638         [IRDMA_OP_AH_DESTROY] = "Destroy Address Handle Cmd",
 639         [IRDMA_OP_MC_CREATE] = "Create Multicast Group Cmd",
 640         [IRDMA_OP_MC_DESTROY] = "Destroy Multicast Group Cmd",
 641         [IRDMA_OP_MC_MODIFY] = "Modify Multicast Group Cmd",
 642         [IRDMA_OP_STATS_ALLOCATE] = "Add Statistics Instance Cmd",
 643         [IRDMA_OP_STATS_FREE] = "Free Statistics Instance Cmd",
 644         [IRDMA_OP_STATS_GATHER] = "Gather Statistics Cmd",
 645         [IRDMA_OP_WS_ADD_NODE] = "Add Work Scheduler Node Cmd",
 646         [IRDMA_OP_WS_MODIFY_NODE] = "Modify Work Scheduler Node Cmd",
 647         [IRDMA_OP_WS_DELETE_NODE] = "Delete Work Scheduler Node Cmd",
 648         [IRDMA_OP_SET_UP_MAP] = "Set UP-UP Mapping Cmd",
 649         [IRDMA_OP_GEN_AE] = "Generate AE Cmd",
 650         [IRDMA_OP_QUERY_RDMA_FEATURES] = "RDMA Get Features Cmd",
 651         [IRDMA_OP_ALLOC_LOCAL_MAC_ENTRY] = "Allocate Local MAC Entry Cmd",
 652         [IRDMA_OP_ADD_LOCAL_MAC_ENTRY] = "Add Local MAC Entry Cmd",
 653         [IRDMA_OP_DELETE_LOCAL_MAC_ENTRY] = "Delete Local MAC Entry Cmd",
 654         [IRDMA_OP_CQ_MODIFY] = "CQ Modify Cmd",
 655 };
 656
 657 static const struct irdma_cqp_err_info irdma_noncrit_err_list[] = {
 658         {0xffff, 0x8002, "Invalid State"},
 659         {0xffff, 0x8006, "Flush No Wqe Pending"},
 660         {0xffff, 0x8007, "Modify QP Bad Close"},
 661         {0xffff, 0x8009, "LLP Closed"},
 662         {0xffff, 0x800a, "Reset Not Sent"}
 663 };
 664
 665 /**
 666  * irdma_cqp_crit_err - check if CQP error is critical
 667  * @dev: pointer to dev structure
 668  * @cqp_cmd: code for last CQP operation
 669  * @maj_err_code: major error code
 670  * @min_err_code: minot error code
 671  */
 672 bool irdma_cqp_crit_err(struct irdma_sc_dev *dev, u8 cqp_cmd,
 673                         u16 maj_err_code, u16 min_err_code)
 674 {
 675         int i;
 676
 677         for (i = 0; i < ARRAY_SIZE(irdma_noncrit_err_list); ++i) {
 678                 if (maj_err_code == irdma_noncrit_err_list[i].maj &&
 679                     min_err_code == irdma_noncrit_err_list[i].min) {
 680                         ibdev_dbg(to_ibdev(dev),
 681                                   "CQP: [%s Error][%s] maj=0x%x min=0x%x\n",
 682                                   irdma_noncrit_err_list[i].desc,
 683                                   irdma_cqp_cmd_names[cqp_cmd], maj_err_code,
 684                                   min_err_code);
 685                         return false;
 686                 }
 687         }
 688         return true;
 689 }
 690
 691 /**
 692  * irdma_handle_cqp_op - process cqp command
 693  * @rf: RDMA PCI function
 694  * @cqp_request: cqp request to process
 695  */
 696 int irdma_handle_cqp_op(struct irdma_pci_f *rf,
 697                         struct irdma_cqp_request *cqp_request)
 698 {
 699         struct irdma_sc_dev *dev = &rf->sc_dev;
 700         struct cqp_cmds_info *info = &cqp_request->info;
 701         int status;
 702         bool put_cqp_request = true;
 703
 704         if (rf->reset)
 705                 return -EBUSY;
 706
 707         irdma_get_cqp_request(cqp_request);
 708         status = irdma_process_cqp_cmd(dev, info);
 709         if (status)
 710                 goto err;
 711
 712         if (cqp_request->waiting) {
 713                 put_cqp_request = false;
 714                 status = irdma_wait_event(rf, cqp_request);
 715                 if (status)
 716                         goto err;
 717         }
 718
 719         return 0;
 720
 721 err:
 722         if (irdma_cqp_crit_err(dev, info->cqp_cmd,
 723                                cqp_request->compl_info.maj_err_code,
 724                                cqp_request->compl_info.min_err_code))
 725                 ibdev_err(&rf->iwdev->ibdev,
 726                           "[%s Error][op_code=%d] status=%d waiting=%d completion_err=%d maj=0x%x min=0x%x\n",
 727                           irdma_cqp_cmd_names[info->cqp_cmd], info->cqp_cmd, status, cqp_request->waiting,
 728                           cqp_request->compl_info.error, cqp_request->compl_info.maj_err_code,
 729                           cqp_request->compl_info.min_err_code);
 730
 731         if (put_cqp_request)
 732                 irdma_put_cqp_request(&rf->cqp, cqp_request);
 733
 734         return status;
 735 }
 736
 737 void irdma_qp_add_ref(struct ib_qp *ibqp)
 738 {
 739         struct irdma_qp *iwqp = (struct irdma_qp *)ibqp;
 740
 741         refcount_inc(&iwqp->refcnt);
 742 }
 743
 744 void irdma_qp_rem_ref(struct ib_qp *ibqp)
 745 {
 746         struct irdma_qp *iwqp = to_iwqp(ibqp);
 747         struct irdma_device *iwdev = iwqp->iwdev;
 748         u32 qp_num;
 749         unsigned long flags;
 750
 751         spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
 752         if (!refcount_dec_and_test(&iwqp->refcnt)) {
 753                 spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
 754                 return;
 755         }
 756
 757         qp_num = iwqp->ibqp.qp_num;
 758         iwdev->rf->qp_table[qp_num] = NULL;
 759         spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
 760         complete(&iwqp->free_qp);
 761 }
 762
 763 void irdma_cq_add_ref(struct ib_cq *ibcq)
 764 {
 765         struct irdma_cq *iwcq = to_iwcq(ibcq);
 766
 767         refcount_inc(&iwcq->refcnt);
 768 }
 769
 770 void irdma_cq_rem_ref(struct ib_cq *ibcq)
 771 {
 772         struct ib_device *ibdev = ibcq->device;
 773         struct irdma_device *iwdev = to_iwdev(ibdev);
 774         struct irdma_cq *iwcq = to_iwcq(ibcq);
 775         unsigned long flags;
 776
 777         spin_lock_irqsave(&iwdev->rf->cqtable_lock, flags);
 778         if (!refcount_dec_and_test(&iwcq->refcnt)) {
 779                 spin_unlock_irqrestore(&iwdev->rf->cqtable_lock, flags);
 780                 return;
 781         }
 782
 783         iwdev->rf->cq_table[iwcq->cq_num] = NULL;
 784         spin_unlock_irqrestore(&iwdev->rf->cqtable_lock, flags);
 785         complete(&iwcq->free_cq);
 786 }
 787
 788 struct ib_device *to_ibdev(struct irdma_sc_dev *dev)
 789 {
 790         return &(container_of(dev, struct irdma_pci_f, sc_dev))->iwdev->ibdev;
 791 }
 792
 793 /**
 794  * irdma_get_qp - get qp address
 795  * @device: iwarp device
 796  * @qpn: qp number
 797  */
 798 struct ib_qp *irdma_get_qp(struct ib_device *device, int qpn)
 799 {
 800         struct irdma_device *iwdev = to_iwdev(device);
 801
 802         if (qpn < IW_FIRST_QPN || qpn >= iwdev->rf->max_qp)
 803                 return NULL;
 804
 805         return &iwdev->rf->qp_table[qpn]->ibqp;
 806 }
 807
 808 /**
 809  * irdma_remove_cqp_head - return head entry and remove
 810  * @dev: device
 811  */
 812 void *irdma_remove_cqp_head(struct irdma_sc_dev *dev)
 813 {
 814         struct list_head *entry;
 815         struct list_head *list = &dev->cqp_cmd_head;
 816
 817         if (list_empty(list))
 818                 return NULL;
 819
 820         entry = list->next;
 821         list_del(entry);
 822
 823         return entry;
 824 }
 825
 826 /**
 827  * irdma_cqp_sds_cmd - create cqp command for sd
 828  * @dev: hardware control device structure
 829  * @sdinfo: information for sd cqp
 830  *
 831  */
 832 int irdma_cqp_sds_cmd(struct irdma_sc_dev *dev,
 833                       struct irdma_update_sds_info *sdinfo)
 834 {
 835         struct irdma_cqp_request *cqp_request;
 836         struct cqp_cmds_info *cqp_info;
 837         struct irdma_pci_f *rf = dev_to_rf(dev);
 838         int status;
 839
 840         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
 841         if (!cqp_request)
 842                 return -ENOMEM;
 843
 844         cqp_info = &cqp_request->info;
 845         memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
 846                sizeof(cqp_info->in.u.update_pe_sds.info));
 847         cqp_info->cqp_cmd = IRDMA_OP_UPDATE_PE_SDS;
 848         cqp_info->post_sq = 1;
 849         cqp_info->in.u.update_pe_sds.dev = dev;
 850         cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
 851
 852         status = irdma_handle_cqp_op(rf, cqp_request);
 853         irdma_put_cqp_request(&rf->cqp, cqp_request);
 854
 855         return status;
 856 }
 857
 858 /**
 859  * irdma_cqp_qp_suspend_resume - cqp command for suspend/resume
 860  * @qp: hardware control qp
 861  * @op: suspend or resume
 862  */
 863 int irdma_cqp_qp_suspend_resume(struct irdma_sc_qp *qp, u8 op)
 864 {
 865         struct irdma_sc_dev *dev = qp->dev;
 866         struct irdma_cqp_request *cqp_request;
 867         struct irdma_sc_cqp *cqp = dev->cqp;
 868         struct cqp_cmds_info *cqp_info;
 869         struct irdma_pci_f *rf = dev_to_rf(dev);
 870         int status;
 871
 872         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, false);
 873         if (!cqp_request)
 874                 return -ENOMEM;
 875
 876         cqp_info = &cqp_request->info;
 877         cqp_info->cqp_cmd = op;
 878         cqp_info->in.u.suspend_resume.cqp = cqp;
 879         cqp_info->in.u.suspend_resume.qp = qp;
 880         cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
 881
 882         status = irdma_handle_cqp_op(rf, cqp_request);
 883         irdma_put_cqp_request(&rf->cqp, cqp_request);
 884
 885         return status;
 886 }
 887
 888 /**
 889  * irdma_term_modify_qp - modify qp for term message
 890  * @qp: hardware control qp
 891  * @next_state: qp's next state
 892  * @term: terminate code
 893  * @term_len: length
 894  */
 895 void irdma_term_modify_qp(struct irdma_sc_qp *qp, u8 next_state, u8 term,
 896                           u8 term_len)
 897 {
 898         struct irdma_qp *iwqp;
 899
 900         iwqp = qp->qp_uk.back_qp;
 901         irdma_next_iw_state(iwqp, next_state, 0, term, term_len);
 902 };
 903
 904 /**
 905  * irdma_terminate_done - after terminate is completed
 906  * @qp: hardware control qp
 907  * @timeout_occurred: indicates if terminate timer expired
 908  */
 909 void irdma_terminate_done(struct irdma_sc_qp *qp, int timeout_occurred)
 910 {
 911         struct irdma_qp *iwqp;
 912         u8 hte = 0;
 913         bool first_time;
 914         unsigned long flags;
 915
 916         iwqp = qp->qp_uk.back_qp;
 917         spin_lock_irqsave(&iwqp->lock, flags);
 918         if (iwqp->hte_added) {
 919                 iwqp->hte_added = 0;
 920                 hte = 1;
 921         }
 922         first_time = !(qp->term_flags & IRDMA_TERM_DONE);
 923         qp->term_flags |= IRDMA_TERM_DONE;
 924         spin_unlock_irqrestore(&iwqp->lock, flags);
 925         if (first_time) {
 926                 if (!timeout_occurred)
 927                         irdma_terminate_del_timer(qp);
 928
 929                 irdma_next_iw_state(iwqp, IRDMA_QP_STATE_ERROR, hte, 0, 0);
 930                 irdma_cm_disconn(iwqp);
 931         }
 932 }
 933
 934 static void irdma_terminate_timeout(struct timer_list *t)
 935 {
 936         struct irdma_qp *iwqp = from_timer(iwqp, t, terminate_timer);
 937         struct irdma_sc_qp *qp = &iwqp->sc_qp;
 938
 939         irdma_terminate_done(qp, 1);
 940         irdma_qp_rem_ref(&iwqp->ibqp);
 941 }
 942
 943 /**
 944  * irdma_terminate_start_timer - start terminate timeout
 945  * @qp: hardware control qp
 946  */
 947 void irdma_terminate_start_timer(struct irdma_sc_qp *qp)
 948 {
 949         struct irdma_qp *iwqp;
 950
 951         iwqp = qp->qp_uk.back_qp;
 952         irdma_qp_add_ref(&iwqp->ibqp);
 953         timer_setup(&iwqp->terminate_timer, irdma_terminate_timeout, 0);
 954         iwqp->terminate_timer.expires = jiffies + HZ;
 955
 956         add_timer(&iwqp->terminate_timer);
 957 }
 958
 959 /**
 960  * irdma_terminate_del_timer - delete terminate timeout
 961  * @qp: hardware control qp
 962  */
 963 void irdma_terminate_del_timer(struct irdma_sc_qp *qp)
 964 {
 965         struct irdma_qp *iwqp;
 966         int ret;
 967
 968         iwqp = qp->qp_uk.back_qp;
 969         ret = del_timer(&iwqp->terminate_timer);
 970         if (ret)
 971                 irdma_qp_rem_ref(&iwqp->ibqp);
 972 }
 973
 974 /**
 975  * irdma_cqp_query_fpm_val_cmd - send cqp command for fpm
 976  * @dev: function device struct
 977  * @val_mem: buffer for fpm
 978  * @hmc_fn_id: function id for fpm
 979  */
 980 int irdma_cqp_query_fpm_val_cmd(struct irdma_sc_dev *dev,
 981                                 struct irdma_dma_mem *val_mem, u8 hmc_fn_id)
 982 {
 983         struct irdma_cqp_request *cqp_request;
 984         struct cqp_cmds_info *cqp_info;
 985         struct irdma_pci_f *rf = dev_to_rf(dev);
 986         int status;
 987
 988         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
 989         if (!cqp_request)
 990                 return -ENOMEM;
 991
 992         cqp_info = &cqp_request->info;
 993         cqp_request->param = NULL;
 994         cqp_info->in.u.query_fpm_val.cqp = dev->cqp;
 995         cqp_info->in.u.query_fpm_val.fpm_val_pa = val_mem->pa;
 996         cqp_info->in.u.query_fpm_val.fpm_val_va = val_mem->va;
 997         cqp_info->in.u.query_fpm_val.hmc_fn_id = hmc_fn_id;
 998         cqp_info->cqp_cmd = IRDMA_OP_QUERY_FPM_VAL;
 999         cqp_info->post_sq = 1;
1000         cqp_info->in.u.query_fpm_val.scratch = (uintptr_t)cqp_request;
1001
1002         status = irdma_handle_cqp_op(rf, cqp_request);
1003         irdma_put_cqp_request(&rf->cqp, cqp_request);
1004
1005         return status;
1006 }
1007
1008 /**
1009  * irdma_cqp_commit_fpm_val_cmd - commit fpm values in hw
1010  * @dev: hardware control device structure
1011  * @val_mem: buffer with fpm values
1012  * @hmc_fn_id: function id for fpm
1013  */
1014 int irdma_cqp_commit_fpm_val_cmd(struct irdma_sc_dev *dev,
1015                                  struct irdma_dma_mem *val_mem, u8 hmc_fn_id)
1016 {
1017         struct irdma_cqp_request *cqp_request;
1018         struct cqp_cmds_info *cqp_info;
1019         struct irdma_pci_f *rf = dev_to_rf(dev);
1020         int status;
1021
1022         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
1023         if (!cqp_request)
1024                 return -ENOMEM;
1025
1026         cqp_info = &cqp_request->info;
1027         cqp_request->param = NULL;
1028         cqp_info->in.u.commit_fpm_val.cqp = dev->cqp;
1029         cqp_info->in.u.commit_fpm_val.fpm_val_pa = val_mem->pa;
1030         cqp_info->in.u.commit_fpm_val.fpm_val_va = val_mem->va;
1031         cqp_info->in.u.commit_fpm_val.hmc_fn_id = hmc_fn_id;
1032         cqp_info->cqp_cmd = IRDMA_OP_COMMIT_FPM_VAL;
1033         cqp_info->post_sq = 1;
1034         cqp_info->in.u.commit_fpm_val.scratch = (uintptr_t)cqp_request;
1035
1036         status = irdma_handle_cqp_op(rf, cqp_request);
1037         irdma_put_cqp_request(&rf->cqp, cqp_request);
1038
1039         return status;
1040 }
1041
1042 /**
1043  * irdma_cqp_cq_create_cmd - create a cq for the cqp
1044  * @dev: device pointer
1045  * @cq: pointer to created cq
1046  */
1047 int irdma_cqp_cq_create_cmd(struct irdma_sc_dev *dev, struct irdma_sc_cq *cq)
1048 {
1049         struct irdma_pci_f *rf = dev_to_rf(dev);
1050         struct irdma_cqp *iwcqp = &rf->cqp;
1051         struct irdma_cqp_request *cqp_request;
1052         struct cqp_cmds_info *cqp_info;
1053         int status;
1054
1055         cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, true);
1056         if (!cqp_request)
1057                 return -ENOMEM;
1058
1059         cqp_info = &cqp_request->info;
1060         cqp_info->cqp_cmd = IRDMA_OP_CQ_CREATE;
1061         cqp_info->post_sq = 1;
1062         cqp_info->in.u.cq_create.cq = cq;
1063         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1064
1065         status = irdma_handle_cqp_op(rf, cqp_request);
1066         irdma_put_cqp_request(iwcqp, cqp_request);
1067
1068         return status;
1069 }
1070
1071 /**
1072  * irdma_cqp_qp_create_cmd - create a qp for the cqp
1073  * @dev: device pointer
1074  * @qp: pointer to created qp
1075  */
1076 int irdma_cqp_qp_create_cmd(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
1077 {
1078         struct irdma_pci_f *rf = dev_to_rf(dev);
1079         struct irdma_cqp *iwcqp = &rf->cqp;
1080         struct irdma_cqp_request *cqp_request;
1081         struct cqp_cmds_info *cqp_info;
1082         struct irdma_create_qp_info *qp_info;
1083         int status;
1084
1085         cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, true);
1086         if (!cqp_request)
1087                 return -ENOMEM;
1088
1089         cqp_info = &cqp_request->info;
1090         qp_info = &cqp_request->info.in.u.qp_create.info;
1091         memset(qp_info, 0, sizeof(*qp_info));
1092         qp_info->cq_num_valid = true;
1093         qp_info->next_iwarp_state = IRDMA_QP_STATE_RTS;
1094         cqp_info->cqp_cmd = IRDMA_OP_QP_CREATE;
1095         cqp_info->post_sq = 1;
1096         cqp_info->in.u.qp_create.qp = qp;
1097         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1098
1099         status = irdma_handle_cqp_op(rf, cqp_request);
1100         irdma_put_cqp_request(iwcqp, cqp_request);
1101
1102         return status;
1103 }
1104
1105 /**
1106  * irdma_dealloc_push_page - free a push page for qp
1107  * @rf: RDMA PCI function
1108  * @qp: hardware control qp
1109  */
1110 static void irdma_dealloc_push_page(struct irdma_pci_f *rf,
1111                                     struct irdma_sc_qp *qp)
1112 {
1113         struct irdma_cqp_request *cqp_request;
1114         struct cqp_cmds_info *cqp_info;
1115         int status;
1116
1117         if (qp->push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX)
1118                 return;
1119
1120         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, false);
1121         if (!cqp_request)
1122                 return;
1123
1124         cqp_info = &cqp_request->info;
1125         cqp_info->cqp_cmd = IRDMA_OP_MANAGE_PUSH_PAGE;
1126         cqp_info->post_sq = 1;
1127         cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
1128         cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle;
1129         cqp_info->in.u.manage_push_page.info.free_page = 1;
1130         cqp_info->in.u.manage_push_page.info.push_page_type = 0;
1131         cqp_info->in.u.manage_push_page.cqp = &rf->cqp.sc_cqp;
1132         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
1133         status = irdma_handle_cqp_op(rf, cqp_request);
1134         if (!status)
1135                 qp->push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX;
1136         irdma_put_cqp_request(&rf->cqp, cqp_request);
1137 }
1138
1139 /**
1140  * irdma_free_qp_rsrc - free up memory resources for qp
1141  * @iwqp: qp ptr (user or kernel)
1142  */
1143 void irdma_free_qp_rsrc(struct irdma_qp *iwqp)
1144 {
1145         struct irdma_device *iwdev = iwqp->iwdev;
1146         struct irdma_pci_f *rf = iwdev->rf;
1147         u32 qp_num = iwqp->ibqp.qp_num;
1148
1149         irdma_ieq_cleanup_qp(iwdev->vsi.ieq, &iwqp->sc_qp);
1150         irdma_dealloc_push_page(rf, &iwqp->sc_qp);
1151         if (iwqp->sc_qp.vsi) {
1152                 irdma_qp_rem_qos(&iwqp->sc_qp);
1153                 iwqp->sc_qp.dev->ws_remove(iwqp->sc_qp.vsi,
1154                                            iwqp->sc_qp.user_pri);
1155         }
1156
1157         if (qp_num > 2)
1158                 irdma_free_rsrc(rf, rf->allocated_qps, qp_num);
1159         dma_free_coherent(rf->sc_dev.hw->device, iwqp->q2_ctx_mem.size,
1160                           iwqp->q2_ctx_mem.va, iwqp->q2_ctx_mem.pa);
1161         iwqp->q2_ctx_mem.va = NULL;
1162         dma_free_coherent(rf->sc_dev.hw->device, iwqp->kqp.dma_mem.size,
1163                           iwqp->kqp.dma_mem.va, iwqp->kqp.dma_mem.pa);
1164         iwqp->kqp.dma_mem.va = NULL;
1165         kfree(iwqp->kqp.sq_wrid_mem);
1166         kfree(iwqp->kqp.rq_wrid_mem);
1167 }
1168
1169 /**
1170  * irdma_cq_wq_destroy - send cq destroy cqp
1171  * @rf: RDMA PCI function
1172  * @cq: hardware control cq
1173  */
1174 void irdma_cq_wq_destroy(struct irdma_pci_f *rf, struct irdma_sc_cq *cq)
1175 {
1176         struct irdma_cqp_request *cqp_request;
1177         struct cqp_cmds_info *cqp_info;
1178
1179         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
1180         if (!cqp_request)
1181                 return;
1182
1183         cqp_info = &cqp_request->info;
1184         cqp_info->cqp_cmd = IRDMA_OP_CQ_DESTROY;
1185         cqp_info->post_sq = 1;
1186         cqp_info->in.u.cq_destroy.cq = cq;
1187         cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
1188
1189         irdma_handle_cqp_op(rf, cqp_request);
1190         irdma_put_cqp_request(&rf->cqp, cqp_request);
1191 }
1192
1193 /**
1194  * irdma_hw_modify_qp_callback - handle state for modifyQPs that don't wait
1195  * @cqp_request: modify QP completion
1196  */
1197 static void irdma_hw_modify_qp_callback(struct irdma_cqp_request *cqp_request)
1198 {
1199         struct cqp_cmds_info *cqp_info;
1200         struct irdma_qp *iwqp;
1201
1202         cqp_info = &cqp_request->info;
1203         iwqp = cqp_info->in.u.qp_modify.qp->qp_uk.back_qp;
1204         atomic_dec(&iwqp->hw_mod_qp_pend);
1205         wake_up(&iwqp->mod_qp_waitq);
1206 }
1207
1208 /**
1209  * irdma_hw_modify_qp - setup cqp for modify qp
1210  * @iwdev: RDMA device
1211  * @iwqp: qp ptr (user or kernel)
1212  * @info: info for modify qp
1213  * @wait: flag to wait or not for modify qp completion
1214  */
1215 int irdma_hw_modify_qp(struct irdma_device *iwdev, struct irdma_qp *iwqp,
1216                        struct irdma_modify_qp_info *info, bool wait)
1217 {
1218         int status;
1219         struct irdma_pci_f *rf = iwdev->rf;
1220         struct irdma_cqp_request *cqp_request;
1221         struct cqp_cmds_info *cqp_info;
1222         struct irdma_modify_qp_info *m_info;
1223
1224         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, wait);
1225         if (!cqp_request)
1226                 return -ENOMEM;
1227
1228         if (!wait) {
1229                 cqp_request->callback_fcn = irdma_hw_modify_qp_callback;
1230                 atomic_inc(&iwqp->hw_mod_qp_pend);
1231         }
1232         cqp_info = &cqp_request->info;
1233         m_info = &cqp_info->in.u.qp_modify.info;
1234         memcpy(m_info, info, sizeof(*m_info));
1235         cqp_info->cqp_cmd = IRDMA_OP_QP_MODIFY;
1236         cqp_info->post_sq = 1;
1237         cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
1238         cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
1239         status = irdma_handle_cqp_op(rf, cqp_request);
1240         irdma_put_cqp_request(&rf->cqp, cqp_request);
1241         if (status) {
1242                 if (rdma_protocol_roce(&iwdev->ibdev, 1))
1243                         return status;
1244
1245                 switch (m_info->next_iwarp_state) {
1246                         struct irdma_gen_ae_info ae_info;
1247
1248                 case IRDMA_QP_STATE_RTS:
1249                 case IRDMA_QP_STATE_IDLE:
1250                 case IRDMA_QP_STATE_TERMINATE:
1251                 case IRDMA_QP_STATE_CLOSING:
1252                         if (info->curr_iwarp_state == IRDMA_QP_STATE_IDLE)
1253                                 irdma_send_reset(iwqp->cm_node);
1254                         else
1255                                 iwqp->sc_qp.term_flags = IRDMA_TERM_DONE;
1256                         if (!wait) {
1257                                 ae_info.ae_code = IRDMA_AE_BAD_CLOSE;
1258                                 ae_info.ae_src = 0;
1259                                 irdma_gen_ae(rf, &iwqp->sc_qp, &ae_info, false);
1260                         } else {
1261                                 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp,
1262                                                                               wait);
1263                                 if (!cqp_request)
1264                                         return -ENOMEM;
1265
1266                                 cqp_info = &cqp_request->info;
1267                                 m_info = &cqp_info->in.u.qp_modify.info;
1268                                 memcpy(m_info, info, sizeof(*m_info));
1269                                 cqp_info->cqp_cmd = IRDMA_OP_QP_MODIFY;
1270                                 cqp_info->post_sq = 1;
1271                                 cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
1272                                 cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
1273                                 m_info->next_iwarp_state = IRDMA_QP_STATE_ERROR;
1274                                 m_info->reset_tcp_conn = true;
1275                                 irdma_handle_cqp_op(rf, cqp_request);
1276                                 irdma_put_cqp_request(&rf->cqp, cqp_request);
1277                         }
1278                         break;
1279                 case IRDMA_QP_STATE_ERROR:
1280                 default:
1281                         break;
1282                 }
1283         }
1284
1285         return status;
1286 }
1287
1288 /**
1289  * irdma_cqp_cq_destroy_cmd - destroy the cqp cq
1290  * @dev: device pointer
1291  * @cq: pointer to cq
1292  */
1293 void irdma_cqp_cq_destroy_cmd(struct irdma_sc_dev *dev, struct irdma_sc_cq *cq)
1294 {
1295         struct irdma_pci_f *rf = dev_to_rf(dev);
1296
1297         irdma_cq_wq_destroy(rf, cq);
1298 }
1299
1300 /**
1301  * irdma_cqp_qp_destroy_cmd - destroy the cqp
1302  * @dev: device pointer
1303  * @qp: pointer to qp
1304  */
1305 int irdma_cqp_qp_destroy_cmd(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
1306 {
1307         struct irdma_pci_f *rf = dev_to_rf(dev);
1308         struct irdma_cqp *iwcqp = &rf->cqp;
1309         struct irdma_cqp_request *cqp_request;
1310         struct cqp_cmds_info *cqp_info;
1311         int status;
1312
1313         cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, true);
1314         if (!cqp_request)
1315                 return -ENOMEM;
1316
1317         cqp_info = &cqp_request->info;
1318         memset(cqp_info, 0, sizeof(*cqp_info));
1319         cqp_info->cqp_cmd = IRDMA_OP_QP_DESTROY;
1320         cqp_info->post_sq = 1;
1321         cqp_info->in.u.qp_destroy.qp = qp;
1322         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1323         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1324
1325         status = irdma_handle_cqp_op(rf, cqp_request);
1326         irdma_put_cqp_request(&rf->cqp, cqp_request);
1327
1328         return status;
1329 }
1330
1331 /**
1332  * irdma_ieq_mpa_crc_ae - generate AE for crc error
1333  * @dev: hardware control device structure
1334  * @qp: hardware control qp
1335  */
1336 void irdma_ieq_mpa_crc_ae(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
1337 {
1338         struct irdma_gen_ae_info info = {};
1339         struct irdma_pci_f *rf = dev_to_rf(dev);
1340
1341         ibdev_dbg(&rf->iwdev->ibdev, "AEQ: Generate MPA CRC AE\n");
1342         info.ae_code = IRDMA_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1343         info.ae_src = IRDMA_AE_SOURCE_RQ;
1344         irdma_gen_ae(rf, qp, &info, false);
1345 }
1346
1347 /**
1348  * irdma_init_hash_desc - initialize hash for crc calculation
1349  * @desc: cryption type
1350  */
1351 int irdma_init_hash_desc(struct shash_desc **desc)
1352 {
1353         struct crypto_shash *tfm;
1354         struct shash_desc *tdesc;
1355
1356         tfm = crypto_alloc_shash("crc32c", 0, 0);
1357         if (IS_ERR(tfm))
1358                 return -EINVAL;
1359
1360         tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1361                         GFP_KERNEL);
1362         if (!tdesc) {
1363                 crypto_free_shash(tfm);
1364                 return -EINVAL;
1365         }
1366
1367         tdesc->tfm = tfm;
1368         *desc = tdesc;
1369
1370         return 0;
1371 }
1372
1373 /**
1374  * irdma_free_hash_desc - free hash desc
1375  * @desc: to be freed
1376  */
1377 void irdma_free_hash_desc(struct shash_desc *desc)
1378 {
1379         if (desc) {
1380                 crypto_free_shash(desc->tfm);
1381                 kfree(desc);
1382         }
1383 }
1384
1385 /**
1386  * irdma_ieq_check_mpacrc - check if mpa crc is OK
1387  * @desc: desc for hash
1388  * @addr: address of buffer for crc
1389  * @len: length of buffer
1390  * @val: value to be compared
1391  */
1392 int irdma_ieq_check_mpacrc(struct shash_desc *desc, void *addr, u32 len,
1393                            u32 val)
1394 {
1395         u32 crc = 0;
1396         int ret;
1397         int ret_code = 0;
1398
1399         crypto_shash_init(desc);
1400         ret = crypto_shash_update(desc, addr, len);
1401         if (!ret)
1402                 crypto_shash_final(desc, (u8 *)&crc);
1403         if (crc != val)
1404                 ret_code = -EINVAL;
1405
1406         return ret_code;
1407 }
1408
1409 /**
1410  * irdma_ieq_get_qp - get qp based on quad in puda buffer
1411  * @dev: hardware control device structure
1412  * @buf: receive puda buffer on exception q
1413  */
1414 struct irdma_sc_qp *irdma_ieq_get_qp(struct irdma_sc_dev *dev,
1415                                      struct irdma_puda_buf *buf)
1416 {
1417         struct irdma_qp *iwqp;
1418         struct irdma_cm_node *cm_node;
1419         struct irdma_device *iwdev = buf->vsi->back_vsi;
1420         u32 loc_addr[4] = {};
1421         u32 rem_addr[4] = {};
1422         u16 loc_port, rem_port;
1423         struct ipv6hdr *ip6h;
1424         struct iphdr *iph = (struct iphdr *)buf->iph;
1425         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1426
1427         if (iph->version == 4) {
1428                 loc_addr[0] = ntohl(iph->daddr);
1429                 rem_addr[0] = ntohl(iph->saddr);
1430         } else {
1431                 ip6h = (struct ipv6hdr *)buf->iph;
1432                 irdma_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1433                 irdma_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1434         }
1435         loc_port = ntohs(tcph->dest);
1436         rem_port = ntohs(tcph->source);
1437         cm_node = irdma_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1438                                   loc_addr, buf->vlan_valid ? buf->vlan_id : 0xFFFF);
1439         if (!cm_node)
1440                 return NULL;
1441
1442         iwqp = cm_node->iwqp;
1443         irdma_rem_ref_cm_node(cm_node);
1444
1445         return &iwqp->sc_qp;
1446 }
1447
1448 /**
1449  * irdma_send_ieq_ack - ACKs for duplicate or OOO partials FPDUs
1450  * @qp: qp ptr
1451  */
1452 void irdma_send_ieq_ack(struct irdma_sc_qp *qp)
1453 {
1454         struct irdma_cm_node *cm_node = ((struct irdma_qp *)qp->qp_uk.back_qp)->cm_node;
1455         struct irdma_puda_buf *buf = qp->pfpdu.lastrcv_buf;
1456         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1457
1458         cm_node->tcp_cntxt.rcv_nxt = qp->pfpdu.nextseqnum;
1459         cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
1460
1461         irdma_send_ack(cm_node);
1462 }
1463
1464 /**
1465  * irdma_puda_ieq_get_ah_info - get AH info from IEQ buffer
1466  * @qp: qp pointer
1467  * @ah_info: AH info pointer
1468  */
1469 void irdma_puda_ieq_get_ah_info(struct irdma_sc_qp *qp,
1470                                 struct irdma_ah_info *ah_info)
1471 {
1472         struct irdma_puda_buf *buf = qp->pfpdu.ah_buf;
1473         struct iphdr *iph;
1474         struct ipv6hdr *ip6h;
1475
1476         memset(ah_info, 0, sizeof(*ah_info));
1477         ah_info->do_lpbk = true;
1478         ah_info->vlan_tag = buf->vlan_id;
1479         ah_info->insert_vlan_tag = buf->vlan_valid;
1480         ah_info->ipv4_valid = buf->ipv4;
1481         ah_info->vsi = qp->vsi;
1482
1483         if (buf->smac_valid)
1484                 ether_addr_copy(ah_info->mac_addr, buf->smac);
1485
1486         if (buf->ipv4) {
1487                 ah_info->ipv4_valid = true;
1488                 iph = (struct iphdr *)buf->iph;
1489                 ah_info->hop_ttl = iph->ttl;
1490                 ah_info->tc_tos = iph->tos;
1491                 ah_info->dest_ip_addr[0] = ntohl(iph->daddr);
1492                 ah_info->src_ip_addr[0] = ntohl(iph->saddr);
1493         } else {
1494                 ip6h = (struct ipv6hdr *)buf->iph;
1495                 ah_info->hop_ttl = ip6h->hop_limit;
1496                 ah_info->tc_tos = ip6h->priority;
1497                 irdma_copy_ip_ntohl(ah_info->dest_ip_addr,
1498                                     ip6h->daddr.in6_u.u6_addr32);
1499                 irdma_copy_ip_ntohl(ah_info->src_ip_addr,
1500                                     ip6h->saddr.in6_u.u6_addr32);
1501         }
1502
1503         ah_info->dst_arpindex = irdma_arp_table(dev_to_rf(qp->dev),
1504                                                 ah_info->dest_ip_addr,
1505                                                 ah_info->ipv4_valid,
1506                                                 NULL, IRDMA_ARP_RESOLVE);
1507 }
1508
1509 /**
1510  * irdma_gen1_ieq_update_tcpip_info - update tcpip in the buffer
1511  * @buf: puda to update
1512  * @len: length of buffer
1513  * @seqnum: seq number for tcp
1514  */
1515 static void irdma_gen1_ieq_update_tcpip_info(struct irdma_puda_buf *buf,
1516                                              u16 len, u32 seqnum)
1517 {
1518         struct tcphdr *tcph;
1519         struct iphdr *iph;
1520         u16 iphlen;
1521         u16 pktsize;
1522         u8 *addr = buf->mem.va;
1523
1524         iphlen = (buf->ipv4) ? 20 : 40;
1525         iph = (struct iphdr *)(addr + buf->maclen);
1526         tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1527         pktsize = len + buf->tcphlen + iphlen;
1528         iph->tot_len = htons(pktsize);
1529         tcph->seq = htonl(seqnum);
1530 }
1531
1532 /**
1533  * irdma_ieq_update_tcpip_info - update tcpip in the buffer
1534  * @buf: puda to update
1535  * @len: length of buffer
1536  * @seqnum: seq number for tcp
1537  */
1538 void irdma_ieq_update_tcpip_info(struct irdma_puda_buf *buf, u16 len,
1539                                  u32 seqnum)
1540 {
1541         struct tcphdr *tcph;
1542         u8 *addr;
1543
1544         if (buf->vsi->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_1)
1545                 return irdma_gen1_ieq_update_tcpip_info(buf, len, seqnum);
1546
1547         addr = buf->mem.va;
1548         tcph = (struct tcphdr *)addr;
1549         tcph->seq = htonl(seqnum);
1550 }
1551
1552 /**
1553  * irdma_gen1_puda_get_tcpip_info - get tcpip info from puda
1554  * buffer
1555  * @info: to get information
1556  * @buf: puda buffer
1557  */
1558 static int irdma_gen1_puda_get_tcpip_info(struct irdma_puda_cmpl_info *info,
1559                                           struct irdma_puda_buf *buf)
1560 {
1561         struct iphdr *iph;
1562         struct ipv6hdr *ip6h;
1563         struct tcphdr *tcph;
1564         u16 iphlen;
1565         u16 pkt_len;
1566         u8 *mem = buf->mem.va;
1567         struct ethhdr *ethh = buf->mem.va;
1568
1569         if (ethh->h_proto == htons(0x8100)) {
1570                 info->vlan_valid = true;
1571                 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) &
1572                                VLAN_VID_MASK;
1573         }
1574
1575         buf->maclen = (info->vlan_valid) ? 18 : 14;
1576         iphlen = (info->l3proto) ? 40 : 20;
1577         buf->ipv4 = (info->l3proto) ? false : true;
1578         buf->iph = mem + buf->maclen;
1579         iph = (struct iphdr *)buf->iph;
1580         buf->tcph = buf->iph + iphlen;
1581         tcph = (struct tcphdr *)buf->tcph;
1582
1583         if (buf->ipv4) {
1584                 pkt_len = ntohs(iph->tot_len);
1585         } else {
1586                 ip6h = (struct ipv6hdr *)buf->iph;
1587                 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1588         }
1589
1590         buf->totallen = pkt_len + buf->maclen;
1591
1592         if (info->payload_len < buf->totallen) {
1593                 ibdev_dbg(to_ibdev(buf->vsi->dev),
1594                           "ERR: payload_len = 0x%x totallen expected0x%x\n",
1595                           info->payload_len, buf->totallen);
1596                 return -EINVAL;
1597         }
1598
1599         buf->tcphlen = tcph->doff << 2;
1600         buf->datalen = pkt_len - iphlen - buf->tcphlen;
1601         buf->data = buf->datalen ? buf->tcph + buf->tcphlen : NULL;
1602         buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1603         buf->seqnum = ntohl(tcph->seq);
1604
1605         return 0;
1606 }
1607
1608 /**
1609  * irdma_puda_get_tcpip_info - get tcpip info from puda buffer
1610  * @info: to get information
1611  * @buf: puda buffer
1612  */
1613 int irdma_puda_get_tcpip_info(struct irdma_puda_cmpl_info *info,
1614                               struct irdma_puda_buf *buf)
1615 {
1616         struct tcphdr *tcph;
1617         u32 pkt_len;
1618         u8 *mem;
1619
1620         if (buf->vsi->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_1)
1621                 return irdma_gen1_puda_get_tcpip_info(info, buf);
1622
1623         mem = buf->mem.va;
1624         buf->vlan_valid = info->vlan_valid;
1625         if (info->vlan_valid)
1626                 buf->vlan_id = info->vlan;
1627
1628         buf->ipv4 = info->ipv4;
1629         if (buf->ipv4)
1630                 buf->iph = mem + IRDMA_IPV4_PAD;
1631         else
1632                 buf->iph = mem;
1633
1634         buf->tcph = mem + IRDMA_TCP_OFFSET;
1635         tcph = (struct tcphdr *)buf->tcph;
1636         pkt_len = info->payload_len;
1637         buf->totallen = pkt_len;
1638         buf->tcphlen = tcph->doff << 2;
1639         buf->datalen = pkt_len - IRDMA_TCP_OFFSET - buf->tcphlen;
1640         buf->data = buf->datalen ? buf->tcph + buf->tcphlen : NULL;
1641         buf->hdrlen = IRDMA_TCP_OFFSET + buf->tcphlen;
1642         buf->seqnum = ntohl(tcph->seq);
1643
1644         if (info->smac_valid) {
1645                 ether_addr_copy(buf->smac, info->smac);
1646                 buf->smac_valid = true;
1647         }
1648
1649         return 0;
1650 }
1651
1652 /**
1653  * irdma_hw_stats_timeout - Stats timer-handler which updates all HW stats
1654  * @t: timer_list pointer
1655  */
1656 static void irdma_hw_stats_timeout(struct timer_list *t)
1657 {
1658         struct irdma_vsi_pestat *pf_devstat =
1659                 from_timer(pf_devstat, t, stats_timer);
1660         struct irdma_sc_vsi *sc_vsi = pf_devstat->vsi;
1661
1662         if (sc_vsi->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
1663                 irdma_cqp_gather_stats_cmd(sc_vsi->dev, sc_vsi->pestat, false);
1664         else
1665                 irdma_cqp_gather_stats_gen1(sc_vsi->dev, sc_vsi->pestat);
1666
1667         mod_timer(&pf_devstat->stats_timer,
1668                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1669 }
1670
1671 /**
1672  * irdma_hw_stats_start_timer - Start periodic stats timer
1673  * @vsi: vsi structure pointer
1674  */
1675 void irdma_hw_stats_start_timer(struct irdma_sc_vsi *vsi)
1676 {
1677         struct irdma_vsi_pestat *devstat = vsi->pestat;
1678
1679         timer_setup(&devstat->stats_timer, irdma_hw_stats_timeout, 0);
1680         mod_timer(&devstat->stats_timer,
1681                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1682 }
1683
1684 /**
1685  * irdma_hw_stats_stop_timer - Delete periodic stats timer
1686  * @vsi: pointer to vsi structure
1687  */
1688 void irdma_hw_stats_stop_timer(struct irdma_sc_vsi *vsi)
1689 {
1690         struct irdma_vsi_pestat *devstat = vsi->pestat;
1691
1692         del_timer_sync(&devstat->stats_timer);
1693 }
1694
1695 /**
1696  * irdma_process_stats - Checking for wrap and update stats
1697  * @pestat: stats structure pointer
1698  */
1699 static inline void irdma_process_stats(struct irdma_vsi_pestat *pestat)
1700 {
1701         sc_vsi_update_stats(pestat->vsi);
1702 }
1703
1704 /**
1705  * irdma_cqp_gather_stats_gen1 - Gather stats
1706  * @dev: pointer to device structure
1707  * @pestat: statistics structure
1708  */
1709 void irdma_cqp_gather_stats_gen1(struct irdma_sc_dev *dev,
1710                                  struct irdma_vsi_pestat *pestat)
1711 {
1712         struct irdma_gather_stats *gather_stats =
1713                 pestat->gather_info.gather_stats_va;
1714         const struct irdma_hw_stat_map *map = dev->hw_stats_map;
1715         u16 max_stats_idx = dev->hw_attrs.max_stat_idx;
1716         u32 stats_inst_offset_32;
1717         u32 stats_inst_offset_64;
1718         u64 new_val;
1719         u16 i;
1720
1721         stats_inst_offset_32 = (pestat->gather_info.use_stats_inst) ?
1722                                 pestat->gather_info.stats_inst_index :
1723                                 pestat->hw->hmc.hmc_fn_id;
1724         stats_inst_offset_32 *= 4;
1725         stats_inst_offset_64 = stats_inst_offset_32 * 2;
1726
1727         for (i = 0; i < max_stats_idx; i++) {
1728                 if (map[i].bitmask <= IRDMA_MAX_STATS_32)
1729                         new_val = rd32(dev->hw,
1730                                        dev->hw_stats_regs[i] + stats_inst_offset_32);
1731                 else
1732                         new_val = rd64(dev->hw,
1733                                        dev->hw_stats_regs[i] + stats_inst_offset_64);
1734                 gather_stats->val[map[i].byteoff / sizeof(u64)] = new_val;
1735         }
1736
1737         irdma_process_stats(pestat);
1738 }
1739
1740 /**
1741  * irdma_process_cqp_stats - Checking for wrap and update stats
1742  * @cqp_request: cqp_request structure pointer
1743  */
1744 static void irdma_process_cqp_stats(struct irdma_cqp_request *cqp_request)
1745 {
1746         struct irdma_vsi_pestat *pestat = cqp_request->param;
1747
1748         irdma_process_stats(pestat);
1749 }
1750
1751 /**
1752  * irdma_cqp_gather_stats_cmd - Gather stats
1753  * @dev: pointer to device structure
1754  * @pestat: pointer to stats info
1755  * @wait: flag to wait or not wait for stats
1756  */
1757 int irdma_cqp_gather_stats_cmd(struct irdma_sc_dev *dev,
1758                                struct irdma_vsi_pestat *pestat, bool wait)
1759
1760 {
1761         struct irdma_pci_f *rf = dev_to_rf(dev);
1762         struct irdma_cqp *iwcqp = &rf->cqp;
1763         struct irdma_cqp_request *cqp_request;
1764         struct cqp_cmds_info *cqp_info;
1765         int status;
1766
1767         cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, wait);
1768         if (!cqp_request)
1769                 return -ENOMEM;
1770
1771         cqp_info = &cqp_request->info;
1772         memset(cqp_info, 0, sizeof(*cqp_info));
1773         cqp_info->cqp_cmd = IRDMA_OP_STATS_GATHER;
1774         cqp_info->post_sq = 1;
1775         cqp_info->in.u.stats_gather.info = pestat->gather_info;
1776         cqp_info->in.u.stats_gather.scratch = (uintptr_t)cqp_request;
1777         cqp_info->in.u.stats_gather.cqp = &rf->cqp.sc_cqp;
1778         cqp_request->param = pestat;
1779         if (!wait)
1780                 cqp_request->callback_fcn = irdma_process_cqp_stats;
1781         status = irdma_handle_cqp_op(rf, cqp_request);
1782         if (wait)
1783                 irdma_process_stats(pestat);
1784         irdma_put_cqp_request(&rf->cqp, cqp_request);
1785
1786         return status;
1787 }
1788
1789 /**
1790  * irdma_cqp_stats_inst_cmd - Allocate/free stats instance
1791  * @vsi: pointer to vsi structure
1792  * @cmd: command to allocate or free
1793  * @stats_info: pointer to allocate stats info
1794  */
1795 int irdma_cqp_stats_inst_cmd(struct irdma_sc_vsi *vsi, u8 cmd,
1796                              struct irdma_stats_inst_info *stats_info)
1797 {
1798         struct irdma_pci_f *rf = dev_to_rf(vsi->dev);
1799         struct irdma_cqp *iwcqp = &rf->cqp;
1800         struct irdma_cqp_request *cqp_request;
1801         struct cqp_cmds_info *cqp_info;
1802         int status;
1803         bool wait = false;
1804
1805         if (cmd == IRDMA_OP_STATS_ALLOCATE)
1806                 wait = true;
1807         cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, wait);
1808         if (!cqp_request)
1809                 return -ENOMEM;
1810
1811         cqp_info = &cqp_request->info;
1812         memset(cqp_info, 0, sizeof(*cqp_info));
1813         cqp_info->cqp_cmd = cmd;
1814         cqp_info->post_sq = 1;
1815         cqp_info->in.u.stats_manage.info = *stats_info;
1816         cqp_info->in.u.stats_manage.scratch = (uintptr_t)cqp_request;
1817         cqp_info->in.u.stats_manage.cqp = &rf->cqp.sc_cqp;
1818         status = irdma_handle_cqp_op(rf, cqp_request);
1819         if (wait)
1820                 stats_info->stats_idx = cqp_request->compl_info.op_ret_val;
1821         irdma_put_cqp_request(iwcqp, cqp_request);
1822
1823         return status;
1824 }
1825
1826 /**
1827  * irdma_cqp_ceq_cmd - Create/Destroy CEQ's after CEQ 0
1828  * @dev: pointer to device info
1829  * @sc_ceq: pointer to ceq structure
1830  * @op: Create or Destroy
1831  */
1832 int irdma_cqp_ceq_cmd(struct irdma_sc_dev *dev, struct irdma_sc_ceq *sc_ceq,
1833                       u8 op)
1834 {
1835         struct irdma_cqp_request *cqp_request;
1836         struct cqp_cmds_info *cqp_info;
1837         struct irdma_pci_f *rf = dev_to_rf(dev);
1838         int status;
1839
1840         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
1841         if (!cqp_request)
1842                 return -ENOMEM;
1843
1844         cqp_info = &cqp_request->info;
1845         cqp_info->post_sq = 1;
1846         cqp_info->cqp_cmd = op;
1847         cqp_info->in.u.ceq_create.ceq = sc_ceq;
1848         cqp_info->in.u.ceq_create.scratch = (uintptr_t)cqp_request;
1849
1850         status = irdma_handle_cqp_op(rf, cqp_request);
1851         irdma_put_cqp_request(&rf->cqp, cqp_request);
1852
1853         return status;
1854 }
1855
1856 /**
1857  * irdma_cqp_aeq_cmd - Create/Destroy AEQ
1858  * @dev: pointer to device info
1859  * @sc_aeq: pointer to aeq structure
1860  * @op: Create or Destroy
1861  */
1862 int irdma_cqp_aeq_cmd(struct irdma_sc_dev *dev, struct irdma_sc_aeq *sc_aeq,
1863                       u8 op)
1864 {
1865         struct irdma_cqp_request *cqp_request;
1866         struct cqp_cmds_info *cqp_info;
1867         struct irdma_pci_f *rf = dev_to_rf(dev);
1868         int status;
1869
1870         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
1871         if (!cqp_request)
1872                 return -ENOMEM;
1873
1874         cqp_info = &cqp_request->info;
1875         cqp_info->post_sq = 1;
1876         cqp_info->cqp_cmd = op;
1877         cqp_info->in.u.aeq_create.aeq = sc_aeq;
1878         cqp_info->in.u.aeq_create.scratch = (uintptr_t)cqp_request;
1879
1880         status = irdma_handle_cqp_op(rf, cqp_request);
1881         irdma_put_cqp_request(&rf->cqp, cqp_request);
1882
1883         return status;
1884 }
1885
1886 /**
1887  * irdma_cqp_ws_node_cmd - Add/modify/delete ws node
1888  * @dev: pointer to device structure
1889  * @cmd: Add, modify or delete
1890  * @node_info: pointer to ws node info
1891  */
1892 int irdma_cqp_ws_node_cmd(struct irdma_sc_dev *dev, u8 cmd,
1893                           struct irdma_ws_node_info *node_info)
1894 {
1895         struct irdma_pci_f *rf = dev_to_rf(dev);
1896         struct irdma_cqp *iwcqp = &rf->cqp;
1897         struct irdma_sc_cqp *cqp = &iwcqp->sc_cqp;
1898         struct irdma_cqp_request *cqp_request;
1899         struct cqp_cmds_info *cqp_info;
1900         int status;
1901         bool poll;
1902
1903         if (!rf->sc_dev.ceq_valid)
1904                 poll = true;
1905         else
1906                 poll = false;
1907
1908         cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, !poll);
1909         if (!cqp_request)
1910                 return -ENOMEM;
1911
1912         cqp_info = &cqp_request->info;
1913         memset(cqp_info, 0, sizeof(*cqp_info));
1914         cqp_info->cqp_cmd = cmd;
1915         cqp_info->post_sq = 1;
1916         cqp_info->in.u.ws_node.info = *node_info;
1917         cqp_info->in.u.ws_node.cqp = cqp;
1918         cqp_info->in.u.ws_node.scratch = (uintptr_t)cqp_request;
1919         status = irdma_handle_cqp_op(rf, cqp_request);
1920         if (status)
1921                 goto exit;
1922
1923         if (poll) {
1924                 struct irdma_ccq_cqe_info compl_info;
1925
1926                 status = irdma_sc_poll_for_cqp_op_done(cqp, IRDMA_CQP_OP_WORK_SCHED_NODE,
1927                                                        &compl_info);
1928                 node_info->qs_handle = compl_info.op_ret_val;
1929                 ibdev_dbg(&rf->iwdev->ibdev, "DCB: opcode=%d, compl_info.retval=%d\n",
1930                           compl_info.op_code, compl_info.op_ret_val);
1931         } else {
1932                 node_info->qs_handle = cqp_request->compl_info.op_ret_val;
1933         }
1934
1935 exit:
1936         irdma_put_cqp_request(&rf->cqp, cqp_request);
1937
1938         return status;
1939 }
1940
1941 /**
1942  * irdma_ah_cqp_op - perform an AH cqp operation
1943  * @rf: RDMA PCI function
1944  * @sc_ah: address handle
1945  * @cmd: AH operation
1946  * @wait: wait if true
1947  * @callback_fcn: Callback function on CQP op completion
1948  * @cb_param: parameter for callback function
1949  *
1950  * returns errno
1951  */
1952 int irdma_ah_cqp_op(struct irdma_pci_f *rf, struct irdma_sc_ah *sc_ah, u8 cmd,
1953                     bool wait,
1954                     void (*callback_fcn)(struct irdma_cqp_request *),
1955                     void *cb_param)
1956 {
1957         struct irdma_cqp_request *cqp_request;
1958         struct cqp_cmds_info *cqp_info;
1959         int status;
1960
1961         if (cmd != IRDMA_OP_AH_CREATE && cmd != IRDMA_OP_AH_DESTROY)
1962                 return -EINVAL;
1963
1964         cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, wait);
1965         if (!cqp_request)
1966                 return -ENOMEM;
1967
1968         cqp_info = &cqp_request->info;
1969         cqp_info->cqp_cmd = cmd;
1970         cqp_info->post_sq = 1;
1971         if (cmd == IRDMA_OP_AH_CREATE) {
1972                 cqp_info->in.u.ah_create.info = sc_ah->ah_info;
1973                 cqp_info->in.u.ah_create.scratch = (uintptr_t)cqp_request;
1974                 cqp_info->in.u.ah_create.cqp = &rf->cqp.sc_cqp;
1975         } else if (cmd == IRDMA_OP_AH_DESTROY) {
1976                 cqp_info->in.u.ah_destroy.info = sc_ah->ah_info;
1977                 cqp_info->in.u.ah_destroy.scratch = (uintptr_t)cqp_request;
1978                 cqp_info->in.u.ah_destroy.cqp = &rf->cqp.sc_cqp;
1979         }
1980
1981         if (!wait) {
1982                 cqp_request->callback_fcn = callback_fcn;
1983                 cqp_request->param = cb_param;
1984         }
1985         status = irdma_handle_cqp_op(rf, cqp_request);
1986         irdma_put_cqp_request(&rf->cqp, cqp_request);
1987
1988         if (status)
1989                 return -ENOMEM;
1990
1991         if (wait)
1992                 sc_ah->ah_info.ah_valid = (cmd == IRDMA_OP_AH_CREATE);
1993
1994         return 0;
1995 }
1996
1997 /**
1998  * irdma_ieq_ah_cb - callback after creation of AH for IEQ
1999  * @cqp_request: pointer to cqp_request of create AH
2000  */
2001 static void irdma_ieq_ah_cb(struct irdma_cqp_request *cqp_request)
2002 {
2003         struct irdma_sc_qp *qp = cqp_request->param;
2004         struct irdma_sc_ah *sc_ah = qp->pfpdu.ah;
2005         unsigned long flags;
2006
2007         spin_lock_irqsave(&qp->pfpdu.lock, flags);
2008         if (!cqp_request->compl_info.op_ret_val) {
2009                 sc_ah->ah_info.ah_valid = true;
2010                 irdma_ieq_process_fpdus(qp, qp->vsi->ieq);
2011         } else {
2012                 sc_ah->ah_info.ah_valid = false;
2013                 irdma_ieq_cleanup_qp(qp->vsi->ieq, qp);
2014         }
2015         spin_unlock_irqrestore(&qp->pfpdu.lock, flags);
2016 }
2017
2018 /**
2019  * irdma_ilq_ah_cb - callback after creation of AH for ILQ
2020  * @cqp_request: pointer to cqp_request of create AH
2021  */
2022 static void irdma_ilq_ah_cb(struct irdma_cqp_request *cqp_request)
2023 {
2024         struct irdma_cm_node *cm_node = cqp_request->param;
2025         struct irdma_sc_ah *sc_ah = cm_node->ah;
2026
2027         sc_ah->ah_info.ah_valid = !cqp_request->compl_info.op_ret_val;
2028         irdma_add_conn_est_qh(cm_node);
2029 }
2030
2031 /**
2032  * irdma_puda_create_ah - create AH for ILQ/IEQ qp's
2033  * @dev: device pointer
2034  * @ah_info: Address handle info
2035  * @wait: When true will wait for operation to complete
2036  * @type: ILQ/IEQ
2037  * @cb_param: Callback param when not waiting
2038  * @ah_ret: Returned pointer to address handle if created
2039  *
2040  */
2041 int irdma_puda_create_ah(struct irdma_sc_dev *dev,
2042                          struct irdma_ah_info *ah_info, bool wait,
2043                          enum puda_rsrc_type type, void *cb_param,
2044                          struct irdma_sc_ah **ah_ret)
2045 {
2046         struct irdma_sc_ah *ah;
2047         struct irdma_pci_f *rf = dev_to_rf(dev);
2048         int err;
2049
2050         ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
2051         *ah_ret = ah;
2052         if (!ah)
2053                 return -ENOMEM;
2054
2055         err = irdma_alloc_rsrc(rf, rf->allocated_ahs, rf->max_ah,
2056                                &ah_info->ah_idx, &rf->next_ah);
2057         if (err)
2058                 goto err_free;
2059
2060         ah->dev = dev;
2061         ah->ah_info = *ah_info;
2062
2063         if (type == IRDMA_PUDA_RSRC_TYPE_ILQ)
2064                 err = irdma_ah_cqp_op(rf, ah, IRDMA_OP_AH_CREATE, wait,
2065                                       irdma_ilq_ah_cb, cb_param);
2066         else
2067                 err = irdma_ah_cqp_op(rf, ah, IRDMA_OP_AH_CREATE, wait,
2068                                       irdma_ieq_ah_cb, cb_param);
2069
2070         if (err)
2071                 goto error;
2072         return 0;
2073
2074 error:
2075         irdma_free_rsrc(rf, rf->allocated_ahs, ah->ah_info.ah_idx);
2076 err_free:
2077         kfree(ah);
2078         *ah_ret = NULL;
2079         return -ENOMEM;
2080 }
2081
2082 /**
2083  * irdma_puda_free_ah - free a puda address handle
2084  * @dev: device pointer
2085  * @ah: The address handle to free
2086  */
2087 void irdma_puda_free_ah(struct irdma_sc_dev *dev, struct irdma_sc_ah *ah)
2088 {
2089         struct irdma_pci_f *rf = dev_to_rf(dev);
2090
2091         if (!ah)
2092                 return;
2093
2094         if (ah->ah_info.ah_valid) {
2095                 irdma_ah_cqp_op(rf, ah, IRDMA_OP_AH_DESTROY, false, NULL, NULL);
2096                 irdma_free_rsrc(rf, rf->allocated_ahs, ah->ah_info.ah_idx);
2097         }
2098
2099         kfree(ah);
2100 }
2101
2102 /**
2103  * irdma_gsi_ud_qp_ah_cb - callback after creation of AH for GSI/ID QP
2104  * @cqp_request: pointer to cqp_request of create AH
2105  */
2106 void irdma_gsi_ud_qp_ah_cb(struct irdma_cqp_request *cqp_request)
2107 {
2108         struct irdma_sc_ah *sc_ah = cqp_request->param;
2109
2110         if (!cqp_request->compl_info.op_ret_val)
2111                 sc_ah->ah_info.ah_valid = true;
2112         else
2113                 sc_ah->ah_info.ah_valid = false;
2114 }
2115
2116 /**
2117  * irdma_prm_add_pble_mem - add moemory to pble resources
2118  * @pprm: pble resource manager
2119  * @pchunk: chunk of memory to add
2120  */
2121 int irdma_prm_add_pble_mem(struct irdma_pble_prm *pprm,
2122                            struct irdma_chunk *pchunk)
2123 {
2124         u64 sizeofbitmap;
2125
2126         if (pchunk->size & 0xfff)
2127                 return -EINVAL;
2128
2129         sizeofbitmap = (u64)pchunk->size >> pprm->pble_shift;
2130
2131         pchunk->bitmapbuf = bitmap_zalloc(sizeofbitmap, GFP_KERNEL);
2132         if (!pchunk->bitmapbuf)
2133                 return -ENOMEM;
2134
2135         pchunk->sizeofbitmap = sizeofbitmap;
2136         /* each pble is 8 bytes hence shift by 3 */
2137         pprm->total_pble_alloc += pchunk->size >> 3;
2138         pprm->free_pble_cnt += pchunk->size >> 3;
2139
2140         return 0;
2141 }
2142
2143 /**
2144  * irdma_prm_get_pbles - get pble's from prm
2145  * @pprm: pble resource manager
2146  * @chunkinfo: nformation about chunk where pble's were acquired
2147  * @mem_size: size of pble memory needed
2148  * @vaddr: returns virtual address of pble memory
2149  * @fpm_addr: returns fpm address of pble memory
2150  */
2151 int irdma_prm_get_pbles(struct irdma_pble_prm *pprm,
2152                         struct irdma_pble_chunkinfo *chunkinfo, u64 mem_size,
2153                         u64 **vaddr, u64 *fpm_addr)
2154 {
2155         u64 bits_needed;
2156         u64 bit_idx = PBLE_INVALID_IDX;
2157         struct irdma_chunk *pchunk = NULL;
2158         struct list_head *chunk_entry = pprm->clist.next;
2159         u32 offset;
2160         unsigned long flags;
2161         *vaddr = NULL;
2162         *fpm_addr = 0;
2163
2164         bits_needed = DIV_ROUND_UP_ULL(mem_size, BIT_ULL(pprm->pble_shift));
2165
2166         spin_lock_irqsave(&pprm->prm_lock, flags);
2167         while (chunk_entry != &pprm->clist) {
2168                 pchunk = (struct irdma_chunk *)chunk_entry;
2169                 bit_idx = bitmap_find_next_zero_area(pchunk->bitmapbuf,
2170                                                      pchunk->sizeofbitmap, 0,
2171                                                      bits_needed, 0);
2172                 if (bit_idx < pchunk->sizeofbitmap)
2173                         break;
2174
2175                 /* list.next used macro */
2176                 chunk_entry = pchunk->list.next;
2177         }
2178
2179         if (!pchunk || bit_idx >= pchunk->sizeofbitmap) {
2180                 spin_unlock_irqrestore(&pprm->prm_lock, flags);
2181                 return -ENOMEM;
2182         }
2183
2184         bitmap_set(pchunk->bitmapbuf, bit_idx, bits_needed);
2185         offset = bit_idx << pprm->pble_shift;
2186         *vaddr = pchunk->vaddr + offset;
2187         *fpm_addr = pchunk->fpm_addr + offset;
2188
2189         chunkinfo->pchunk = pchunk;
2190         chunkinfo->bit_idx = bit_idx;
2191         chunkinfo->bits_used = bits_needed;
2192         /* 3 is sizeof pble divide */
2193         pprm->free_pble_cnt -= chunkinfo->bits_used << (pprm->pble_shift - 3);
2194         spin_unlock_irqrestore(&pprm->prm_lock, flags);
2195
2196         return 0;
2197 }
2198
2199 /**
2200  * irdma_prm_return_pbles - return pbles back to prm
2201  * @pprm: pble resource manager
2202  * @chunkinfo: chunk where pble's were acquired and to be freed
2203  */
2204 void irdma_prm_return_pbles(struct irdma_pble_prm *pprm,
2205                             struct irdma_pble_chunkinfo *chunkinfo)
2206 {
2207         unsigned long flags;
2208
2209         spin_lock_irqsave(&pprm->prm_lock, flags);
2210         pprm->free_pble_cnt += chunkinfo->bits_used << (pprm->pble_shift - 3);
2211         bitmap_clear(chunkinfo->pchunk->bitmapbuf, chunkinfo->bit_idx,
2212                      chunkinfo->bits_used);
2213         spin_unlock_irqrestore(&pprm->prm_lock, flags);
2214 }
2215
2216 int irdma_map_vm_page_list(struct irdma_hw *hw, void *va, dma_addr_t *pg_dma,
2217                            u32 pg_cnt)
2218 {
2219         struct page *vm_page;
2220         int i;
2221         u8 *addr;
2222
2223         addr = (u8 *)(uintptr_t)va;
2224         for (i = 0; i < pg_cnt; i++) {
2225                 vm_page = vmalloc_to_page(addr);
2226                 if (!vm_page)
2227                         goto err;
2228
2229                 pg_dma[i] = dma_map_page(hw->device, vm_page, 0, PAGE_SIZE,
2230                                          DMA_BIDIRECTIONAL);
2231                 if (dma_mapping_error(hw->device, pg_dma[i]))
2232                         goto err;
2233
2234                 addr += PAGE_SIZE;
2235         }
2236
2237         return 0;
2238
2239 err:
2240         irdma_unmap_vm_page_list(hw, pg_dma, i);
2241         return -ENOMEM;
2242 }
2243
2244 void irdma_unmap_vm_page_list(struct irdma_hw *hw, dma_addr_t *pg_dma, u32 pg_cnt)
2245 {
2246         int i;
2247
2248         for (i = 0; i < pg_cnt; i++)
2249                 dma_unmap_page(hw->device, pg_dma[i], PAGE_SIZE, DMA_BIDIRECTIONAL);
2250 }
2251
2252 /**
2253  * irdma_pble_free_paged_mem - free virtual paged memory
2254  * @chunk: chunk to free with paged memory
2255  */
2256 void irdma_pble_free_paged_mem(struct irdma_chunk *chunk)
2257 {
2258         if (!chunk->pg_cnt)
2259                 goto done;
2260
2261         irdma_unmap_vm_page_list(chunk->dev->hw, chunk->dmainfo.dmaaddrs,
2262                                  chunk->pg_cnt);
2263
2264 done:
2265         kfree(chunk->dmainfo.dmaaddrs);
2266         chunk->dmainfo.dmaaddrs = NULL;
2267         vfree(chunk->vaddr);
2268         chunk->vaddr = NULL;
2269         chunk->type = 0;
2270 }
2271
2272 /**
2273  * irdma_pble_get_paged_mem -allocate paged memory for pbles
2274  * @chunk: chunk to add for paged memory
2275  * @pg_cnt: number of pages needed
2276  */
2277 int irdma_pble_get_paged_mem(struct irdma_chunk *chunk, u32 pg_cnt)
2278 {
2279         u32 size;
2280         void *va;
2281
2282         chunk->dmainfo.dmaaddrs = kzalloc(pg_cnt << 3, GFP_KERNEL);
2283         if (!chunk->dmainfo.dmaaddrs)
2284                 return -ENOMEM;
2285
2286         size = PAGE_SIZE * pg_cnt;
2287         va = vmalloc(size);
2288         if (!va)
2289                 goto err;
2290
2291         if (irdma_map_vm_page_list(chunk->dev->hw, va, chunk->dmainfo.dmaaddrs,
2292                                    pg_cnt)) {
2293                 vfree(va);
2294                 goto err;
2295         }
2296         chunk->vaddr = va;
2297         chunk->size = size;
2298         chunk->pg_cnt = pg_cnt;
2299         chunk->type = PBLE_SD_PAGED;
2300
2301         return 0;
2302 err:
2303         kfree(chunk->dmainfo.dmaaddrs);
2304         chunk->dmainfo.dmaaddrs = NULL;
2305
2306         return -ENOMEM;
2307 }
2308
2309 /**
2310  * irdma_alloc_ws_node_id - Allocate a tx scheduler node ID
2311  * @dev: device pointer
2312  */
2313 u16 irdma_alloc_ws_node_id(struct irdma_sc_dev *dev)
2314 {
2315         struct irdma_pci_f *rf = dev_to_rf(dev);
2316         u32 next = 1;
2317         u32 node_id;
2318
2319         if (irdma_alloc_rsrc(rf, rf->allocated_ws_nodes, rf->max_ws_node_id,
2320                              &node_id, &next))
2321                 return IRDMA_WS_NODE_INVALID;
2322
2323         return (u16)node_id;
2324 }
2325
2326 /**
2327  * irdma_free_ws_node_id - Free a tx scheduler node ID
2328  * @dev: device pointer
2329  * @node_id: Work scheduler node ID
2330  */
2331 void irdma_free_ws_node_id(struct irdma_sc_dev *dev, u16 node_id)
2332 {
2333         struct irdma_pci_f *rf = dev_to_rf(dev);
2334
2335         irdma_free_rsrc(rf, rf->allocated_ws_nodes, (u32)node_id);
2336 }
2337
2338 /**
2339  * irdma_modify_qp_to_err - Modify a QP to error
2340  * @sc_qp: qp structure
2341  */
2342 void irdma_modify_qp_to_err(struct irdma_sc_qp *sc_qp)
2343 {
2344         struct irdma_qp *qp = sc_qp->qp_uk.back_qp;
2345         struct ib_qp_attr attr;
2346
2347         if (qp->iwdev->rf->reset)
2348                 return;
2349         attr.qp_state = IB_QPS_ERR;
2350
2351         if (rdma_protocol_roce(qp->ibqp.device, 1))
2352                 irdma_modify_qp_roce(&qp->ibqp, &attr, IB_QP_STATE, NULL);
2353         else
2354                 irdma_modify_qp(&qp->ibqp, &attr, IB_QP_STATE, NULL);
2355 }
2356
2357 void irdma_ib_qp_event(struct irdma_qp *iwqp, enum irdma_qp_event_type event)
2358 {
2359         struct ib_event ibevent;
2360
2361         if (!iwqp->ibqp.event_handler)
2362                 return;
2363
2364         switch (event) {
2365         case IRDMA_QP_EVENT_CATASTROPHIC:
2366                 ibevent.event = IB_EVENT_QP_FATAL;
2367                 break;
2368         case IRDMA_QP_EVENT_ACCESS_ERR:
2369                 ibevent.event = IB_EVENT_QP_ACCESS_ERR;
2370                 break;
2371         case IRDMA_QP_EVENT_REQ_ERR:
2372                 ibevent.event = IB_EVENT_QP_REQ_ERR;
2373                 break;
2374         }
2375         ibevent.device = iwqp->ibqp.device;
2376         ibevent.element.qp = &iwqp->ibqp;
2377         iwqp->ibqp.event_handler(&ibevent, iwqp->ibqp.qp_context);
2378 }
2379
2380 bool irdma_cq_empty(struct irdma_cq *iwcq)
2381 {
2382         struct irdma_cq_uk *ukcq;
2383         u64 qword3;
2384         __le64 *cqe;
2385         u8 polarity;
2386
2387         ukcq  = &iwcq->sc_cq.cq_uk;
2388         cqe = IRDMA_GET_CURRENT_CQ_ELEM(ukcq);
2389         get_64bit_val(cqe, 24, &qword3);
2390         polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword3);
2391
2392         return polarity != ukcq->polarity;
2393 }
2394
2395 void irdma_remove_cmpls_list(struct irdma_cq *iwcq)
2396 {
2397         struct irdma_cmpl_gen *cmpl_node;
2398         struct list_head *tmp_node, *list_node;
2399
2400         list_for_each_safe (list_node, tmp_node, &iwcq->cmpl_generated) {
2401                 cmpl_node = list_entry(list_node, struct irdma_cmpl_gen, list);
2402                 list_del(&cmpl_node->list);
2403                 kfree(cmpl_node);
2404         }
2405 }
2406
2407 int irdma_generated_cmpls(struct irdma_cq *iwcq, struct irdma_cq_poll_info *cq_poll_info)
2408 {
2409         struct irdma_cmpl_gen *cmpl;
2410
2411         if (list_empty(&iwcq->cmpl_generated))
2412                 return -ENOENT;
2413         cmpl = list_first_entry_or_null(&iwcq->cmpl_generated, struct irdma_cmpl_gen, list);
2414         list_del(&cmpl->list);
2415         memcpy(cq_poll_info, &cmpl->cpi, sizeof(*cq_poll_info));
2416         kfree(cmpl);
2417
2418         ibdev_dbg(iwcq->ibcq.device,
2419                   "VERBS: %s: Poll artificially generated completion for QP 0x%X, op %u, wr_id=0x%llx\n",
2420                   __func__, cq_poll_info->qp_id, cq_poll_info->op_type,
2421                   cq_poll_info->wr_id);
2422
2423         return 0;
2424 }
2425
2426 /**
2427  * irdma_set_cpi_common_values - fill in values for polling info struct
2428  * @cpi: resulting structure of cq_poll_info type
2429  * @qp: QPair
2430  * @qp_num: id of the QP
2431  */
2432 static void irdma_set_cpi_common_values(struct irdma_cq_poll_info *cpi,
2433                                         struct irdma_qp_uk *qp, u32 qp_num)
2434 {
2435         cpi->comp_status = IRDMA_COMPL_STATUS_FLUSHED;
2436         cpi->error = true;
2437         cpi->major_err = IRDMA_FLUSH_MAJOR_ERR;
2438         cpi->minor_err = FLUSH_GENERAL_ERR;
2439         cpi->qp_handle = (irdma_qp_handle)(uintptr_t)qp;
2440         cpi->qp_id = qp_num;
2441 }
2442
2443 static inline void irdma_comp_handler(struct irdma_cq *cq)
2444 {
2445         if (!cq->ibcq.comp_handler)
2446                 return;
2447         if (atomic_cmpxchg(&cq->armed, 1, 0))
2448                 cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
2449 }
2450
2451 void irdma_generate_flush_completions(struct irdma_qp *iwqp)
2452 {
2453         struct irdma_qp_uk *qp = &iwqp->sc_qp.qp_uk;
2454         struct irdma_ring *sq_ring = &qp->sq_ring;
2455         struct irdma_ring *rq_ring = &qp->rq_ring;
2456         struct irdma_cmpl_gen *cmpl;
2457         __le64 *sw_wqe;
2458         u64 wqe_qword;
2459         u32 wqe_idx;
2460         bool compl_generated = false;
2461         unsigned long flags1;
2462
2463         spin_lock_irqsave(&iwqp->iwscq->lock, flags1);
2464         if (irdma_cq_empty(iwqp->iwscq)) {
2465                 unsigned long flags2;
2466
2467                 spin_lock_irqsave(&iwqp->lock, flags2);
2468                 while (IRDMA_RING_MORE_WORK(*sq_ring)) {
2469                         cmpl = kzalloc(sizeof(*cmpl), GFP_ATOMIC);
2470                         if (!cmpl) {
2471                                 spin_unlock_irqrestore(&iwqp->lock, flags2);
2472                                 spin_unlock_irqrestore(&iwqp->iwscq->lock, flags1);
2473                                 return;
2474                         }
2475
2476                         wqe_idx = sq_ring->tail;
2477                         irdma_set_cpi_common_values(&cmpl->cpi, qp, qp->qp_id);
2478
2479                         cmpl->cpi.wr_id = qp->sq_wrtrk_array[wqe_idx].wrid;
2480                         sw_wqe = qp->sq_base[wqe_idx].elem;
2481                         get_64bit_val(sw_wqe, 24, &wqe_qword);
2482                         cmpl->cpi.op_type = (u8)FIELD_GET(IRDMAQPSQ_OPCODE, IRDMAQPSQ_OPCODE);
2483                         cmpl->cpi.q_type = IRDMA_CQE_QTYPE_SQ;
2484                         /* remove the SQ WR by moving SQ tail*/
2485                         IRDMA_RING_SET_TAIL(*sq_ring,
2486                                 sq_ring->tail + qp->sq_wrtrk_array[sq_ring->tail].quanta);
2487                         if (cmpl->cpi.op_type == IRDMAQP_OP_NOP) {
2488                                 kfree(cmpl);
2489                                 continue;
2490                         }
2491                         ibdev_dbg(iwqp->iwscq->ibcq.device,
2492                                   "DEV: %s: adding wr_id = 0x%llx SQ Completion to list qp_id=%d\n",
2493                                   __func__, cmpl->cpi.wr_id, qp->qp_id);
2494                         list_add_tail(&cmpl->list, &iwqp->iwscq->cmpl_generated);
2495                         compl_generated = true;
2496                 }
2497                 spin_unlock_irqrestore(&iwqp->lock, flags2);
2498                 spin_unlock_irqrestore(&iwqp->iwscq->lock, flags1);
2499                 if (compl_generated)
2500                         irdma_comp_handler(iwqp->iwscq);
2501         } else {
2502                 spin_unlock_irqrestore(&iwqp->iwscq->lock, flags1);
2503                 mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
2504                                  msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
2505         }
2506
2507         spin_lock_irqsave(&iwqp->iwrcq->lock, flags1);
2508         if (irdma_cq_empty(iwqp->iwrcq)) {
2509                 unsigned long flags2;
2510
2511                 spin_lock_irqsave(&iwqp->lock, flags2);
2512                 while (IRDMA_RING_MORE_WORK(*rq_ring)) {
2513                         cmpl = kzalloc(sizeof(*cmpl), GFP_ATOMIC);
2514                         if (!cmpl) {
2515                                 spin_unlock_irqrestore(&iwqp->lock, flags2);
2516                                 spin_unlock_irqrestore(&iwqp->iwrcq->lock, flags1);
2517                                 return;
2518                         }
2519
2520                         wqe_idx = rq_ring->tail;
2521                         irdma_set_cpi_common_values(&cmpl->cpi, qp, qp->qp_id);
2522
2523                         cmpl->cpi.wr_id = qp->rq_wrid_array[wqe_idx];
2524                         cmpl->cpi.op_type = IRDMA_OP_TYPE_REC;
2525                         cmpl->cpi.q_type = IRDMA_CQE_QTYPE_RQ;
2526                         /* remove the RQ WR by moving RQ tail */
2527                         IRDMA_RING_SET_TAIL(*rq_ring, rq_ring->tail + 1);
2528                         ibdev_dbg(iwqp->iwrcq->ibcq.device,
2529                                   "DEV: %s: adding wr_id = 0x%llx RQ Completion to list qp_id=%d, wqe_idx=%d\n",
2530                                   __func__, cmpl->cpi.wr_id, qp->qp_id,
2531                                   wqe_idx);
2532                         list_add_tail(&cmpl->list, &iwqp->iwrcq->cmpl_generated);
2533
2534                         compl_generated = true;
2535                 }
2536                 spin_unlock_irqrestore(&iwqp->lock, flags2);
2537                 spin_unlock_irqrestore(&iwqp->iwrcq->lock, flags1);
2538                 if (compl_generated)
2539                         irdma_comp_handler(iwqp->iwrcq);
2540         } else {
2541                 spin_unlock_irqrestore(&iwqp->iwrcq->lock, flags1);
2542                 mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
2543                                  msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
2544         }
2545 }