drivers/infiniband/hw/hns/hns_roce_main.c

   1 /*
   2  * Copyright (c) 2016 Hisilicon Limited.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33 #include <linux/acpi.h>
  34 #include <linux/of_platform.h>
  35 #include <rdma/ib_addr.h>
  36 #include <rdma/ib_smi.h>
  37 #include <rdma/ib_user_verbs.h>
  38 #include "hns_roce_common.h"
  39 #include "hns_roce_device.h"
  40 #include "hns_roce_user.h"
  41 #include "hns_roce_hem.h"
  42
  43 /**
  44  * hns_roce_addrconf_ifid_eui48 - Get default gid.
  45  * @eui: eui.
  46  * @vlan_id:  gid
  47  * @dev:  net device
  48  * Description:
  49  *    MAC convert to GID
  50  *        gid[0..7] = fe80 0000 0000 0000
  51  *        gid[8] = mac[0] ^ 2
  52  *        gid[9] = mac[1]
  53  *        gid[10] = mac[2]
  54  *        gid[11] = ff        (VLAN ID high byte (4 MS bits))
  55  *        gid[12] = fe        (VLAN ID low byte)
  56  *        gid[13] = mac[3]
  57  *        gid[14] = mac[4]
  58  *        gid[15] = mac[5]
  59  */
  60 static void hns_roce_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
  61                                          struct net_device *dev)
  62 {
  63         memcpy(eui, dev->dev_addr, 3);
  64         memcpy(eui + 5, dev->dev_addr + 3, 3);
  65         if (vlan_id < 0x1000) {
  66                 eui[3] = vlan_id >> 8;
  67                 eui[4] = vlan_id & 0xff;
  68         } else {
  69                 eui[3] = 0xff;
  70                 eui[4] = 0xfe;
  71         }
  72         eui[0] ^= 2;
  73 }
  74
  75 static void hns_roce_make_default_gid(struct net_device *dev, union ib_gid *gid)
  76 {
  77         memset(gid, 0, sizeof(*gid));
  78         gid->raw[0] = 0xFE;
  79         gid->raw[1] = 0x80;
  80         hns_roce_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
  81 }
  82
  83 /**
  84  * hns_get_gid_index - Get gid index.
  85  * @hr_dev: pointer to structure hns_roce_dev.
  86  * @port:  port, value range: 0 ~ MAX
  87  * @gid_index:  gid_index, value range: 0 ~ MAX
  88  * Description:
  89  *    N ports shared gids, allocation method as follow:
  90  *              GID[0][0], GID[1][0],.....GID[N - 1][0],
  91  *              GID[0][0], GID[1][0],.....GID[N - 1][0],
  92  *              And so on
  93  */
  94 int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
  95 {
  96         return gid_index * hr_dev->caps.num_ports + port;
  97 }
  98
  99 static int hns_roce_set_gid(struct hns_roce_dev *hr_dev, u8 port, int gid_index,
 100                      union ib_gid *gid)
 101 {
 102         struct device *dev = &hr_dev->pdev->dev;
 103         u8 gid_idx = 0;
 104
 105         if (gid_index >= hr_dev->caps.gid_table_len[port]) {
 106                 dev_err(dev, "gid_index %d illegal, port %d gid range: 0~%d\n",
 107                         gid_index, port, hr_dev->caps.gid_table_len[port] - 1);
 108                 return -EINVAL;
 109         }
 110
 111         gid_idx = hns_get_gid_index(hr_dev, port, gid_index);
 112
 113         if (!memcmp(gid, &hr_dev->iboe.gid_table[gid_idx], sizeof(*gid)))
 114                 return -EINVAL;
 115
 116         memcpy(&hr_dev->iboe.gid_table[gid_idx], gid, sizeof(*gid));
 117
 118         hr_dev->hw->set_gid(hr_dev, port, gid_index, gid);
 119
 120         return 0;
 121 }
 122
 123 static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
 124 {
 125         u8 phy_port;
 126         u32 i = 0;
 127
 128         if (!memcmp(hr_dev->dev_addr[port], addr, MAC_ADDR_OCTET_NUM))
 129                 return;
 130
 131         for (i = 0; i < MAC_ADDR_OCTET_NUM; i++)
 132                 hr_dev->dev_addr[port][i] = addr[i];
 133
 134         phy_port = hr_dev->iboe.phy_port[port];
 135         hr_dev->hw->set_mac(hr_dev, phy_port, addr);
 136 }
 137
 138 static void hns_roce_set_mtu(struct hns_roce_dev *hr_dev, u8 port, int mtu)
 139 {
 140         u8 phy_port = hr_dev->iboe.phy_port[port];
 141         enum ib_mtu tmp;
 142
 143         tmp = iboe_get_mtu(mtu);
 144         if (!tmp)
 145                 tmp = IB_MTU_256;
 146
 147         hr_dev->hw->set_mtu(hr_dev, phy_port, tmp);
 148 }
 149
 150 static void hns_roce_update_gids(struct hns_roce_dev *hr_dev, int port)
 151 {
 152         struct ib_event event;
 153
 154         /* Refresh gid in ib_cache */
 155         event.device = &hr_dev->ib_dev;
 156         event.element.port_num = port + 1;
 157         event.event = IB_EVENT_GID_CHANGE;
 158         ib_dispatch_event(&event);
 159 }
 160
 161 static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port,
 162                            unsigned long event)
 163 {
 164         struct device *dev = &hr_dev->pdev->dev;
 165         struct net_device *netdev;
 166         unsigned long flags;
 167         union ib_gid gid;
 168         int ret = 0;
 169
 170         netdev = hr_dev->iboe.netdevs[port];
 171         if (!netdev) {
 172                 dev_err(dev, "port(%d) can't find netdev\n", port);
 173                 return -ENODEV;
 174         }
 175
 176         spin_lock_irqsave(&hr_dev->iboe.lock, flags);
 177
 178         switch (event) {
 179         case NETDEV_UP:
 180         case NETDEV_CHANGE:
 181         case NETDEV_REGISTER:
 182         case NETDEV_CHANGEADDR:
 183                 hns_roce_set_mac(hr_dev, port, netdev->dev_addr);
 184                 hns_roce_make_default_gid(netdev, &gid);
 185                 ret = hns_roce_set_gid(hr_dev, port, 0, &gid);
 186                 if (!ret)
 187                         hns_roce_update_gids(hr_dev, port);
 188                 break;
 189         case NETDEV_DOWN:
 190                 /*
 191                 * In v1 engine, only support all ports closed together.
 192                 */
 193                 break;
 194         default:
 195                 dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event));
 196                 break;
 197         }
 198
 199         spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 200         return ret;
 201 }
 202
 203 static int hns_roce_netdev_event(struct notifier_block *self,
 204                                  unsigned long event, void *ptr)
 205 {
 206         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 207         struct hns_roce_ib_iboe *iboe = NULL;
 208         struct hns_roce_dev *hr_dev = NULL;
 209         u8 port = 0;
 210         int ret = 0;
 211
 212         hr_dev = container_of(self, struct hns_roce_dev, iboe.nb);
 213         iboe = &hr_dev->iboe;
 214
 215         for (port = 0; port < hr_dev->caps.num_ports; port++) {
 216                 if (dev == iboe->netdevs[port]) {
 217                         ret = handle_en_event(hr_dev, port, event);
 218                         if (ret)
 219                                 return NOTIFY_DONE;
 220                         break;
 221                 }
 222         }
 223
 224         return NOTIFY_DONE;
 225 }
 226
 227 static void hns_roce_addr_event(int event, struct net_device *event_netdev,
 228                                 struct hns_roce_dev *hr_dev, union ib_gid *gid)
 229 {
 230         struct hns_roce_ib_iboe *iboe = NULL;
 231         int gid_table_len = 0;
 232         unsigned long flags;
 233         union ib_gid zgid;
 234         u8 gid_idx = 0;
 235         u8 port = 0;
 236         int i = 0;
 237         int free;
 238         struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
 239                                       rdma_vlan_dev_real_dev(event_netdev) :
 240                                       event_netdev;
 241
 242         if (event != NETDEV_UP && event != NETDEV_DOWN)
 243                 return;
 244
 245         iboe = &hr_dev->iboe;
 246         while (port < hr_dev->caps.num_ports) {
 247                 if (real_dev == iboe->netdevs[port])
 248                         break;
 249                 port++;
 250         }
 251
 252         if (port >= hr_dev->caps.num_ports) {
 253                 dev_dbg(&hr_dev->pdev->dev, "can't find netdev\n");
 254                 return;
 255         }
 256
 257         memset(zgid.raw, 0, sizeof(zgid.raw));
 258         free = -1;
 259         gid_table_len = hr_dev->caps.gid_table_len[port];
 260
 261         spin_lock_irqsave(&hr_dev->iboe.lock, flags);
 262
 263         for (i = 0; i < gid_table_len; i++) {
 264                 gid_idx = hns_get_gid_index(hr_dev, port, i);
 265                 if (!memcmp(gid->raw, iboe->gid_table[gid_idx].raw,
 266                             sizeof(gid->raw)))
 267                         break;
 268                 if (free < 0 && !memcmp(zgid.raw,
 269                         iboe->gid_table[gid_idx].raw, sizeof(zgid.raw)))
 270                         free = i;
 271         }
 272
 273         if (i >= gid_table_len) {
 274                 if (free < 0) {
 275                         spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 276                         dev_dbg(&hr_dev->pdev->dev,
 277                                 "gid_index overflow, port(%d)\n", port);
 278                         return;
 279                 }
 280                 if (!hns_roce_set_gid(hr_dev, port, free, gid))
 281                         hns_roce_update_gids(hr_dev, port);
 282         } else if (event == NETDEV_DOWN) {
 283                 if (!hns_roce_set_gid(hr_dev, port, i, &zgid))
 284                         hns_roce_update_gids(hr_dev, port);
 285         }
 286
 287         spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 288 }
 289
 290 static int hns_roce_inet_event(struct notifier_block *self, unsigned long event,
 291                                void *ptr)
 292 {
 293         struct in_ifaddr *ifa = ptr;
 294         struct hns_roce_dev *hr_dev;
 295         struct net_device *dev = ifa->ifa_dev->dev;
 296         union ib_gid gid;
 297
 298         ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
 299
 300         hr_dev = container_of(self, struct hns_roce_dev, iboe.nb_inet);
 301
 302         hns_roce_addr_event(event, dev, hr_dev, &gid);
 303
 304         return NOTIFY_DONE;
 305 }
 306
 307 static int hns_roce_setup_mtu_gids(struct hns_roce_dev *hr_dev)
 308 {
 309         struct in_ifaddr *ifa_list = NULL;
 310         union ib_gid gid = {{0} };
 311         u32 ipaddr = 0;
 312         int index = 0;
 313         int ret = 0;
 314         u8 i = 0;
 315
 316         for (i = 0; i < hr_dev->caps.num_ports; i++) {
 317                 hns_roce_set_mtu(hr_dev, i,
 318                                  ib_mtu_enum_to_int(hr_dev->caps.max_mtu));
 319                 hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr);
 320
 321                 if (hr_dev->iboe.netdevs[i]->ip_ptr) {
 322                         ifa_list = hr_dev->iboe.netdevs[i]->ip_ptr->ifa_list;
 323                         index = 1;
 324                         while (ifa_list) {
 325                                 ipaddr = ifa_list->ifa_address;
 326                                 ipv6_addr_set_v4mapped(ipaddr,
 327                                                        (struct in6_addr *)&gid);
 328                                 ret = hns_roce_set_gid(hr_dev, i, index, &gid);
 329                                 if (ret)
 330                                         break;
 331                                 index++;
 332                                 ifa_list = ifa_list->ifa_next;
 333                         }
 334                         hns_roce_update_gids(hr_dev, i);
 335                 }
 336         }
 337
 338         return ret;
 339 }
 340
 341 static int hns_roce_query_device(struct ib_device *ib_dev,
 342                                  struct ib_device_attr *props,
 343                                  struct ib_udata *uhw)
 344 {
 345         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 346
 347         memset(props, 0, sizeof(*props));
 348
 349         props->sys_image_guid = hr_dev->sys_image_guid;
 350         props->max_mr_size = (u64)(~(0ULL));
 351         props->page_size_cap = hr_dev->caps.page_size_cap;
 352         props->vendor_id = hr_dev->vendor_id;
 353         props->vendor_part_id = hr_dev->vendor_part_id;
 354         props->hw_ver = hr_dev->hw_rev;
 355         props->max_qp = hr_dev->caps.num_qps;
 356         props->max_qp_wr = hr_dev->caps.max_wqes;
 357         props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
 358                                   IB_DEVICE_RC_RNR_NAK_GEN;
 359         props->max_sge = hr_dev->caps.max_sq_sg;
 360         props->max_sge_rd = 1;
 361         props->max_cq = hr_dev->caps.num_cqs;
 362         props->max_cqe = hr_dev->caps.max_cqes;
 363         props->max_mr = hr_dev->caps.num_mtpts;
 364         props->max_pd = hr_dev->caps.num_pds;
 365         props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma;
 366         props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma;
 367         props->atomic_cap = IB_ATOMIC_NONE;
 368         props->max_pkeys = 1;
 369         props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay;
 370
 371         return 0;
 372 }
 373
 374 static struct net_device *hns_roce_get_netdev(struct ib_device *ib_dev,
 375                                               u8 port_num)
 376 {
 377         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 378         struct net_device *ndev;
 379
 380         if (port_num < 1 || port_num > hr_dev->caps.num_ports)
 381                 return NULL;
 382
 383         rcu_read_lock();
 384
 385         ndev = hr_dev->iboe.netdevs[port_num - 1];
 386         if (ndev)
 387                 dev_hold(ndev);
 388
 389         rcu_read_unlock();
 390         return ndev;
 391 }
 392
 393 static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num,
 394                                struct ib_port_attr *props)
 395 {
 396         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 397         struct device *dev = &hr_dev->pdev->dev;
 398         struct net_device *net_dev;
 399         unsigned long flags;
 400         enum ib_mtu mtu;
 401         u8 port;
 402
 403         assert(port_num > 0);
 404         port = port_num - 1;
 405
 406         memset(props, 0, sizeof(*props));
 407
 408         props->max_mtu = hr_dev->caps.max_mtu;
 409         props->gid_tbl_len = hr_dev->caps.gid_table_len[port];
 410         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 411                                 IB_PORT_VENDOR_CLASS_SUP |
 412                                 IB_PORT_BOOT_MGMT_SUP;
 413         props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN;
 414         props->pkey_tbl_len = 1;
 415         props->active_width = IB_WIDTH_4X;
 416         props->active_speed = 1;
 417
 418         spin_lock_irqsave(&hr_dev->iboe.lock, flags);
 419
 420         net_dev = hr_dev->iboe.netdevs[port];
 421         if (!net_dev) {
 422                 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 423                 dev_err(dev, "find netdev %d failed!\r\n", port);
 424                 return -EINVAL;
 425         }
 426
 427         mtu = iboe_get_mtu(net_dev->mtu);
 428         props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256;
 429         props->state = (netif_running(net_dev) && netif_carrier_ok(net_dev)) ?
 430                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 431         props->phys_state = (props->state == IB_PORT_ACTIVE) ? 5 : 3;
 432
 433         spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 434
 435         return 0;
 436 }
 437
 438 static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device,
 439                                                     u8 port_num)
 440 {
 441         return IB_LINK_LAYER_ETHERNET;
 442 }
 443
 444 static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index,
 445                               union ib_gid *gid)
 446 {
 447         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 448         struct device *dev = &hr_dev->pdev->dev;
 449         u8 gid_idx = 0;
 450         u8 port;
 451
 452         if (port_num < 1 || port_num > hr_dev->caps.num_ports ||
 453             index >= hr_dev->caps.gid_table_len[port_num - 1]) {
 454                 dev_err(dev,
 455                         "port_num %d index %d illegal! correct range: port_num 1~%d index 0~%d!\n",
 456                         port_num, index, hr_dev->caps.num_ports,
 457                         hr_dev->caps.gid_table_len[port_num - 1] - 1);
 458                 return -EINVAL;
 459         }
 460
 461         port = port_num - 1;
 462         gid_idx = hns_get_gid_index(hr_dev, port, index);
 463         if (gid_idx >= HNS_ROCE_MAX_GID_NUM) {
 464                 dev_err(dev, "port_num %d index %d illegal! total gid num %d!\n",
 465                         port_num, index, HNS_ROCE_MAX_GID_NUM);
 466                 return -EINVAL;
 467         }
 468
 469         memcpy(gid->raw, hr_dev->iboe.gid_table[gid_idx].raw,
 470                HNS_ROCE_GID_SIZE);
 471
 472         return 0;
 473 }
 474
 475 static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
 476                                u16 *pkey)
 477 {
 478         if (index > 0)
 479                 return -EINVAL;
 480
 481         *pkey = PKEY_ID;
 482
 483         return 0;
 484 }
 485
 486 static int hns_roce_modify_device(struct ib_device *ib_dev, int mask,
 487                                   struct ib_device_modify *props)
 488 {
 489         unsigned long flags;
 490
 491         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 492                 return -EOPNOTSUPP;
 493
 494         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 495                 spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags);
 496                 memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE);
 497                 spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags);
 498         }
 499
 500         return 0;
 501 }
 502
 503 static int hns_roce_modify_port(struct ib_device *ib_dev, u8 port_num, int mask,
 504                                 struct ib_port_modify *props)
 505 {
 506         return 0;
 507 }
 508
 509 static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev,
 510                                                    struct ib_udata *udata)
 511 {
 512         int ret = 0;
 513         struct hns_roce_ucontext *context;
 514         struct hns_roce_ib_alloc_ucontext_resp resp;
 515         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 516
 517         resp.qp_tab_size = hr_dev->caps.num_qps;
 518
 519         context = kmalloc(sizeof(*context), GFP_KERNEL);
 520         if (!context)
 521                 return ERR_PTR(-ENOMEM);
 522
 523         ret = hns_roce_uar_alloc(hr_dev, &context->uar);
 524         if (ret)
 525                 goto error_fail_uar_alloc;
 526
 527         ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
 528         if (ret)
 529                 goto error_fail_copy_to_udata;
 530
 531         return &context->ibucontext;
 532
 533 error_fail_copy_to_udata:
 534         hns_roce_uar_free(hr_dev, &context->uar);
 535
 536 error_fail_uar_alloc:
 537         kfree(context);
 538
 539         return ERR_PTR(ret);
 540 }
 541
 542 static int hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext)
 543 {
 544         struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext);
 545
 546         hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar);
 547         kfree(context);
 548
 549         return 0;
 550 }
 551
 552 static int hns_roce_mmap(struct ib_ucontext *context,
 553                          struct vm_area_struct *vma)
 554 {
 555         if (((vma->vm_end - vma->vm_start) % PAGE_SIZE) != 0)
 556                 return -EINVAL;
 557
 558         if (vma->vm_pgoff == 0) {
 559                 vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
 560                 if (io_remap_pfn_range(vma, vma->vm_start,
 561                                        to_hr_ucontext(context)->uar.pfn,
 562                                        PAGE_SIZE, vma->vm_page_prot))
 563                         return -EAGAIN;
 564
 565         } else {
 566                 return -EINVAL;
 567         }
 568
 569         return 0;
 570 }
 571
 572 static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num,
 573                                    struct ib_port_immutable *immutable)
 574 {
 575         struct ib_port_attr attr;
 576         int ret;
 577
 578         ret = hns_roce_query_port(ib_dev, port_num, &attr);
 579         if (ret)
 580                 return ret;
 581
 582         immutable->pkey_tbl_len = attr.pkey_tbl_len;
 583         immutable->gid_tbl_len = attr.gid_tbl_len;
 584
 585         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
 586         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
 587
 588         return 0;
 589 }
 590
 591 static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
 592 {
 593         struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
 594
 595         unregister_inetaddr_notifier(&iboe->nb_inet);
 596         unregister_netdevice_notifier(&iboe->nb);
 597         ib_unregister_device(&hr_dev->ib_dev);
 598 }
 599
 600 static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 601 {
 602         int ret;
 603         struct hns_roce_ib_iboe *iboe = NULL;
 604         struct ib_device *ib_dev = NULL;
 605         struct device *dev = &hr_dev->pdev->dev;
 606
 607         iboe = &hr_dev->iboe;
 608         spin_lock_init(&iboe->lock);
 609
 610         ib_dev = &hr_dev->ib_dev;
 611         strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX);
 612
 613         ib_dev->owner                   = THIS_MODULE;
 614         ib_dev->node_type               = RDMA_NODE_IB_CA;
 615         ib_dev->dma_device              = dev;
 616
 617         ib_dev->phys_port_cnt           = hr_dev->caps.num_ports;
 618         ib_dev->local_dma_lkey          = hr_dev->caps.reserved_lkey;
 619         ib_dev->num_comp_vectors        = hr_dev->caps.num_comp_vectors;
 620         ib_dev->uverbs_abi_ver          = 1;
 621         ib_dev->uverbs_cmd_mask         =
 622                 (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) |
 623                 (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 624                 (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) |
 625                 (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) |
 626                 (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) |
 627                 (1ULL << IB_USER_VERBS_CMD_REG_MR) |
 628                 (1ULL << IB_USER_VERBS_CMD_DEREG_MR) |
 629                 (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 630                 (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) |
 631                 (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) |
 632                 (1ULL << IB_USER_VERBS_CMD_CREATE_QP) |
 633                 (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) |
 634                 (1ULL << IB_USER_VERBS_CMD_QUERY_QP) |
 635                 (1ULL << IB_USER_VERBS_CMD_DESTROY_QP);
 636
 637         /* HCA||device||port */
 638         ib_dev->modify_device           = hns_roce_modify_device;
 639         ib_dev->query_device            = hns_roce_query_device;
 640         ib_dev->query_port              = hns_roce_query_port;
 641         ib_dev->modify_port             = hns_roce_modify_port;
 642         ib_dev->get_link_layer          = hns_roce_get_link_layer;
 643         ib_dev->get_netdev              = hns_roce_get_netdev;
 644         ib_dev->query_gid               = hns_roce_query_gid;
 645         ib_dev->query_pkey              = hns_roce_query_pkey;
 646         ib_dev->alloc_ucontext          = hns_roce_alloc_ucontext;
 647         ib_dev->dealloc_ucontext        = hns_roce_dealloc_ucontext;
 648         ib_dev->mmap                    = hns_roce_mmap;
 649
 650         /* PD */
 651         ib_dev->alloc_pd                = hns_roce_alloc_pd;
 652         ib_dev->dealloc_pd              = hns_roce_dealloc_pd;
 653
 654         /* AH */
 655         ib_dev->create_ah               = hns_roce_create_ah;
 656         ib_dev->query_ah                = hns_roce_query_ah;
 657         ib_dev->destroy_ah              = hns_roce_destroy_ah;
 658
 659         /* QP */
 660         ib_dev->create_qp               = hns_roce_create_qp;
 661         ib_dev->modify_qp               = hns_roce_modify_qp;
 662         ib_dev->query_qp                = hr_dev->hw->query_qp;
 663         ib_dev->destroy_qp              = hr_dev->hw->destroy_qp;
 664         ib_dev->post_send               = hr_dev->hw->post_send;
 665         ib_dev->post_recv               = hr_dev->hw->post_recv;
 666
 667         /* CQ */
 668         ib_dev->create_cq               = hns_roce_ib_create_cq;
 669         ib_dev->destroy_cq              = hns_roce_ib_destroy_cq;
 670         ib_dev->req_notify_cq           = hr_dev->hw->req_notify_cq;
 671         ib_dev->poll_cq                 = hr_dev->hw->poll_cq;
 672
 673         /* MR */
 674         ib_dev->get_dma_mr              = hns_roce_get_dma_mr;
 675         ib_dev->reg_user_mr             = hns_roce_reg_user_mr;
 676         ib_dev->dereg_mr                = hns_roce_dereg_mr;
 677
 678         /* OTHERS */
 679         ib_dev->get_port_immutable      = hns_roce_port_immutable;
 680
 681         ret = ib_register_device(ib_dev, NULL);
 682         if (ret) {
 683                 dev_err(dev, "ib_register_device failed!\n");
 684                 return ret;
 685         }
 686
 687         ret = hns_roce_setup_mtu_gids(hr_dev);
 688         if (ret) {
 689                 dev_err(dev, "roce_setup_mtu_gids failed!\n");
 690                 goto error_failed_setup_mtu_gids;
 691         }
 692
 693         iboe->nb.notifier_call = hns_roce_netdev_event;
 694         ret = register_netdevice_notifier(&iboe->nb);
 695         if (ret) {
 696                 dev_err(dev, "register_netdevice_notifier failed!\n");
 697                 goto error_failed_setup_mtu_gids;
 698         }
 699
 700         iboe->nb_inet.notifier_call = hns_roce_inet_event;
 701         ret = register_inetaddr_notifier(&iboe->nb_inet);
 702         if (ret) {
 703                 dev_err(dev, "register inet addr notifier failed!\n");
 704                 goto error_failed_register_inetaddr_notifier;
 705         }
 706
 707         return 0;
 708
 709 error_failed_register_inetaddr_notifier:
 710         unregister_netdevice_notifier(&iboe->nb);
 711
 712 error_failed_setup_mtu_gids:
 713         ib_unregister_device(ib_dev);
 714
 715         return ret;
 716 }
 717
 718 static const struct of_device_id hns_roce_of_match[] = {
 719         { .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, },
 720         {},
 721 };
 722 MODULE_DEVICE_TABLE(of, hns_roce_of_match);
 723
 724 static const struct acpi_device_id hns_roce_acpi_match[] = {
 725         { "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 },
 726         {},
 727 };
 728 MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
 729
 730 static int hns_roce_node_match(struct device *dev, void *fwnode)
 731 {
 732         return dev->fwnode == fwnode;
 733 }
 734
 735 static struct
 736 platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
 737 {
 738         struct device *dev;
 739
 740         /* get the 'device'corresponding to matching 'fwnode' */
 741         dev = bus_find_device(&platform_bus_type, NULL,
 742                               fwnode, hns_roce_node_match);
 743         /* get the platform device */
 744         return dev ? to_platform_device(dev) : NULL;
 745 }
 746
 747 static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
 748 {
 749         int i;
 750         int ret;
 751         u8 phy_port;
 752         int port_cnt = 0;
 753         struct device *dev = &hr_dev->pdev->dev;
 754         struct device_node *net_node;
 755         struct net_device *netdev = NULL;
 756         struct platform_device *pdev = NULL;
 757         struct resource *res;
 758
 759         /* check if we are compatible with the underlying SoC */
 760         if (dev_of_node(dev)) {
 761                 const struct of_device_id *of_id;
 762
 763                 of_id = of_match_node(hns_roce_of_match, dev->of_node);
 764                 if (!of_id) {
 765                         dev_err(dev, "device is not compatible!\n");
 766                         return -ENXIO;
 767                 }
 768                 hr_dev->hw = (struct hns_roce_hw *)of_id->data;
 769                 if (!hr_dev->hw) {
 770                         dev_err(dev, "couldn't get H/W specific DT data!\n");
 771                         return -ENXIO;
 772                 }
 773         } else if (is_acpi_device_node(dev->fwnode)) {
 774                 const struct acpi_device_id *acpi_id;
 775
 776                 acpi_id = acpi_match_device(hns_roce_acpi_match, dev);
 777                 if (!acpi_id) {
 778                         dev_err(dev, "device is not compatible!\n");
 779                         return -ENXIO;
 780                 }
 781                 hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data;
 782                 if (!hr_dev->hw) {
 783                         dev_err(dev, "couldn't get H/W specific ACPI data!\n");
 784                         return -ENXIO;
 785                 }
 786         } else {
 787                 dev_err(dev, "can't read compatibility data from DT or ACPI\n");
 788                 return -ENXIO;
 789         }
 790
 791         /* get the mapped register base address */
 792         res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
 793         if (!res) {
 794                 dev_err(dev, "memory resource not found!\n");
 795                 return -EINVAL;
 796         }
 797         hr_dev->reg_base = devm_ioremap_resource(dev, res);
 798         if (IS_ERR(hr_dev->reg_base))
 799                 return PTR_ERR(hr_dev->reg_base);
 800
 801         /* read the node_guid of IB device from the DT or ACPI */
 802         ret = device_property_read_u8_array(dev, "node-guid",
 803                                             (u8 *)&hr_dev->ib_dev.node_guid,
 804                                             GUID_LEN);
 805         if (ret) {
 806                 dev_err(dev, "couldn't get node_guid from DT or ACPI!\n");
 807                 return ret;
 808         }
 809
 810         /* get the RoCE associated ethernet ports or netdevices */
 811         for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
 812                 if (dev_of_node(dev)) {
 813                         net_node = of_parse_phandle(dev->of_node, "eth-handle",
 814                                                     i);
 815                         if (!net_node)
 816                                 continue;
 817                         pdev = of_find_device_by_node(net_node);
 818                 } else if (is_acpi_device_node(dev->fwnode)) {
 819                         struct acpi_reference_args args;
 820                         struct fwnode_handle *fwnode;
 821
 822                         ret = acpi_node_get_property_reference(dev->fwnode,
 823                                                                "eth-handle",
 824                                                                i, &args);
 825                         if (ret)
 826                                 continue;
 827                         fwnode = acpi_fwnode_handle(args.adev);
 828                         pdev = hns_roce_find_pdev(fwnode);
 829                 } else {
 830                         dev_err(dev, "cannot read data from DT or ACPI\n");
 831                         return -ENXIO;
 832                 }
 833
 834                 if (pdev) {
 835                         netdev = platform_get_drvdata(pdev);
 836                         phy_port = (u8)i;
 837                         if (netdev) {
 838                                 hr_dev->iboe.netdevs[port_cnt] = netdev;
 839                                 hr_dev->iboe.phy_port[port_cnt] = phy_port;
 840                         } else {
 841                                 dev_err(dev, "no netdev found with pdev %s\n",
 842                                         pdev->name);
 843                                 return -ENODEV;
 844                         }
 845                         port_cnt++;
 846                 }
 847         }
 848
 849         if (port_cnt == 0) {
 850                 dev_err(dev, "unable to get eth-handle for available ports!\n");
 851                 return -EINVAL;
 852         }
 853
 854         hr_dev->caps.num_ports = port_cnt;
 855
 856         /* cmd issue mode: 0 is poll, 1 is event */
 857         hr_dev->cmd_mod = 1;
 858         hr_dev->loop_idc = 0;
 859
 860         /* read the interrupt names from the DT or ACPI */
 861         ret = device_property_read_string_array(dev, "interrupt-names",
 862                                                 hr_dev->irq_names,
 863                                                 HNS_ROCE_MAX_IRQ_NUM);
 864         if (ret < 0) {
 865                 dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n");
 866                 return ret;
 867         }
 868
 869         /* fetch the interrupt numbers */
 870         for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) {
 871                 hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i);
 872                 if (hr_dev->irq[i] <= 0) {
 873                         dev_err(dev, "platform get of irq[=%d] failed!\n", i);
 874                         return -EINVAL;
 875                 }
 876         }
 877
 878         return 0;
 879 }
 880
 881 static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 882 {
 883         int ret;
 884         struct device *dev = &hr_dev->pdev->dev;
 885
 886         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtt_table,
 887                                       HEM_TYPE_MTT, hr_dev->caps.mtt_entry_sz,
 888                                       hr_dev->caps.num_mtt_segs, 1);
 889         if (ret) {
 890                 dev_err(dev, "Failed to init MTT context memory, aborting.\n");
 891                 return ret;
 892         }
 893
 894         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
 895                                       HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
 896                                       hr_dev->caps.num_mtpts, 1);
 897         if (ret) {
 898                 dev_err(dev, "Failed to init MTPT context memory, aborting.\n");
 899                 goto err_unmap_mtt;
 900         }
 901
 902         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
 903                                       HEM_TYPE_QPC, hr_dev->caps.qpc_entry_sz,
 904                                       hr_dev->caps.num_qps, 1);
 905         if (ret) {
 906                 dev_err(dev, "Failed to init QP context memory, aborting.\n");
 907                 goto err_unmap_dmpt;
 908         }
 909
 910         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table,
 911                                       HEM_TYPE_IRRL,
 912                                       hr_dev->caps.irrl_entry_sz *
 913                                       hr_dev->caps.max_qp_init_rdma,
 914                                       hr_dev->caps.num_qps, 1);
 915         if (ret) {
 916                 dev_err(dev, "Failed to init irrl_table memory, aborting.\n");
 917                 goto err_unmap_qp;
 918         }
 919
 920         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
 921                                       HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
 922                                       hr_dev->caps.num_cqs, 1);
 923         if (ret) {
 924                 dev_err(dev, "Failed to init CQ context memory, aborting.\n");
 925                 goto err_unmap_irrl;
 926         }
 927
 928         return 0;
 929
 930 err_unmap_irrl:
 931         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table);
 932
 933 err_unmap_qp:
 934         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table);
 935
 936 err_unmap_dmpt:
 937         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);
 938
 939 err_unmap_mtt:
 940         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table);
 941
 942         return ret;
 943 }
 944
 945 /**
 946 * hns_roce_setup_hca - setup host channel adapter
 947 * @hr_dev: pointer to hns roce device
 948 * Return : int
 949 */
 950 static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev)
 951 {
 952         int ret;
 953         struct device *dev = &hr_dev->pdev->dev;
 954
 955         spin_lock_init(&hr_dev->sm_lock);
 956         spin_lock_init(&hr_dev->bt_cmd_lock);
 957
 958         ret = hns_roce_init_uar_table(hr_dev);
 959         if (ret) {
 960                 dev_err(dev, "Failed to initialize uar table. aborting\n");
 961                 return ret;
 962         }
 963
 964         ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar);
 965         if (ret) {
 966                 dev_err(dev, "Failed to allocate priv_uar.\n");
 967                 goto err_uar_table_free;
 968         }
 969
 970         ret = hns_roce_init_pd_table(hr_dev);
 971         if (ret) {
 972                 dev_err(dev, "Failed to init protected domain table.\n");
 973                 goto err_uar_alloc_free;
 974         }
 975
 976         ret = hns_roce_init_mr_table(hr_dev);
 977         if (ret) {
 978                 dev_err(dev, "Failed to init memory region table.\n");
 979                 goto err_pd_table_free;
 980         }
 981
 982         ret = hns_roce_init_cq_table(hr_dev);
 983         if (ret) {
 984                 dev_err(dev, "Failed to init completion queue table.\n");
 985                 goto err_mr_table_free;
 986         }
 987
 988         ret = hns_roce_init_qp_table(hr_dev);
 989         if (ret) {
 990                 dev_err(dev, "Failed to init queue pair table.\n");
 991                 goto err_cq_table_free;
 992         }
 993
 994         return 0;
 995
 996 err_cq_table_free:
 997         hns_roce_cleanup_cq_table(hr_dev);
 998
 999 err_mr_table_free:
1000         hns_roce_cleanup_mr_table(hr_dev);
1001
1002 err_pd_table_free:
1003         hns_roce_cleanup_pd_table(hr_dev);
1004
1005 err_uar_alloc_free:
1006         hns_roce_uar_free(hr_dev, &hr_dev->priv_uar);
1007
1008 err_uar_table_free:
1009         hns_roce_cleanup_uar_table(hr_dev);
1010         return ret;
1011 }
1012
1013 /**
1014 * hns_roce_probe - RoCE driver entrance
1015 * @pdev: pointer to platform device
1016 * Return : int
1017 *
1018 */
1019 static int hns_roce_probe(struct platform_device *pdev)
1020 {
1021         int ret;
1022         struct hns_roce_dev *hr_dev;
1023         struct device *dev = &pdev->dev;
1024
1025         hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev));
1026         if (!hr_dev)
1027                 return -ENOMEM;
1028
1029         memset((u8 *)hr_dev + sizeof(struct ib_device), 0,
1030                 sizeof(struct hns_roce_dev) - sizeof(struct ib_device));
1031
1032         hr_dev->pdev = pdev;
1033         platform_set_drvdata(pdev, hr_dev);
1034
1035         if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) &&
1036             dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) {
1037                 dev_err(dev, "Not usable DMA addressing mode\n");
1038                 ret = -EIO;
1039                 goto error_failed_get_cfg;
1040         }
1041
1042         ret = hns_roce_get_cfg(hr_dev);
1043         if (ret) {
1044                 dev_err(dev, "Get Configuration failed!\n");
1045                 goto error_failed_get_cfg;
1046         }
1047
1048         ret = hr_dev->hw->reset(hr_dev, true);
1049         if (ret) {
1050                 dev_err(dev, "Reset RoCE engine failed!\n");
1051                 goto error_failed_get_cfg;
1052         }
1053
1054         hr_dev->hw->hw_profile(hr_dev);
1055
1056         ret = hns_roce_cmd_init(hr_dev);
1057         if (ret) {
1058                 dev_err(dev, "cmd init failed!\n");
1059                 goto error_failed_cmd_init;
1060         }
1061
1062         ret = hns_roce_init_eq_table(hr_dev);
1063         if (ret) {
1064                 dev_err(dev, "eq init failed!\n");
1065                 goto error_failed_eq_table;
1066         }
1067
1068         if (hr_dev->cmd_mod) {
1069                 ret = hns_roce_cmd_use_events(hr_dev);
1070                 if (ret) {
1071                         dev_err(dev, "Switch to event-driven cmd failed!\n");
1072                         goto error_failed_use_event;
1073                 }
1074         }
1075
1076         ret = hns_roce_init_hem(hr_dev);
1077         if (ret) {
1078                 dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n");
1079                 goto error_failed_init_hem;
1080         }
1081
1082         ret = hns_roce_setup_hca(hr_dev);
1083         if (ret) {
1084                 dev_err(dev, "setup hca failed!\n");
1085                 goto error_failed_setup_hca;
1086         }
1087
1088         ret = hr_dev->hw->hw_init(hr_dev);
1089         if (ret) {
1090                 dev_err(dev, "hw_init failed!\n");
1091                 goto error_failed_engine_init;
1092         }
1093
1094         ret = hns_roce_register_device(hr_dev);
1095         if (ret)
1096                 goto error_failed_register_device;
1097
1098         return 0;
1099
1100 error_failed_register_device:
1101         hr_dev->hw->hw_exit(hr_dev);
1102
1103 error_failed_engine_init:
1104         hns_roce_cleanup_bitmap(hr_dev);
1105
1106 error_failed_setup_hca:
1107         hns_roce_cleanup_hem(hr_dev);
1108
1109 error_failed_init_hem:
1110         if (hr_dev->cmd_mod)
1111                 hns_roce_cmd_use_polling(hr_dev);
1112
1113 error_failed_use_event:
1114         hns_roce_cleanup_eq_table(hr_dev);
1115
1116 error_failed_eq_table:
1117         hns_roce_cmd_cleanup(hr_dev);
1118
1119 error_failed_cmd_init:
1120         ret = hr_dev->hw->reset(hr_dev, false);
1121         if (ret)
1122                 dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n");
1123
1124 error_failed_get_cfg:
1125         ib_dealloc_device(&hr_dev->ib_dev);
1126
1127         return ret;
1128 }
1129
1130 /**
1131 * hns_roce_remove - remove RoCE device
1132 * @pdev: pointer to platform device
1133 */
1134 static int hns_roce_remove(struct platform_device *pdev)
1135 {
1136         struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev);
1137
1138         hns_roce_unregister_device(hr_dev);
1139         hr_dev->hw->hw_exit(hr_dev);
1140         hns_roce_cleanup_bitmap(hr_dev);
1141         hns_roce_cleanup_hem(hr_dev);
1142
1143         if (hr_dev->cmd_mod)
1144                 hns_roce_cmd_use_polling(hr_dev);
1145
1146         hns_roce_cleanup_eq_table(hr_dev);
1147         hns_roce_cmd_cleanup(hr_dev);
1148         hr_dev->hw->reset(hr_dev, false);
1149
1150         ib_dealloc_device(&hr_dev->ib_dev);
1151
1152         return 0;
1153 }
1154
1155 static struct platform_driver hns_roce_driver = {
1156         .probe = hns_roce_probe,
1157         .remove = hns_roce_remove,
1158         .driver = {
1159                 .name = DRV_NAME,
1160                 .of_match_table = hns_roce_of_match,
1161                 .acpi_match_table = ACPI_PTR(hns_roce_acpi_match),
1162         },
1163 };
1164
1165 module_platform_driver(hns_roce_driver);
1166
1167 MODULE_LICENSE("Dual BSD/GPL");
1168 MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
1169 MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>");
1170 MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
1171 MODULE_DESCRIPTION("HNS RoCE Driver");