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/module.h>
  35 #include <linux/pci.h>
  36 #include <rdma/ib_addr.h>
  37 #include <rdma/ib_smi.h>
  38 #include <rdma/ib_user_verbs.h>
  39 #include <rdma/ib_cache.h>
  40 #include "hns_roce_common.h"
  41 #include "hns_roce_device.h"
  42 #include "hns_roce_hem.h"
  43
  44 static int hns_roce_set_mac(struct hns_roce_dev *hr_dev, u32 port,
  45                             const u8 *addr)
  46 {
  47         u8 phy_port;
  48         u32 i;
  49
  50         if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
  51                 return 0;
  52
  53         if (!memcmp(hr_dev->dev_addr[port], addr, ETH_ALEN))
  54                 return 0;
  55
  56         for (i = 0; i < ETH_ALEN; i++)
  57                 hr_dev->dev_addr[port][i] = addr[i];
  58
  59         phy_port = hr_dev->iboe.phy_port[port];
  60         return hr_dev->hw->set_mac(hr_dev, phy_port, addr);
  61 }
  62
  63 static int hns_roce_add_gid(const struct ib_gid_attr *attr, void **context)
  64 {
  65         struct hns_roce_dev *hr_dev = to_hr_dev(attr->device);
  66         u32 port = attr->port_num - 1;
  67         int ret;
  68
  69         if (port >= hr_dev->caps.num_ports)
  70                 return -EINVAL;
  71
  72         ret = hr_dev->hw->set_gid(hr_dev, attr->index, &attr->gid, attr);
  73
  74         return ret;
  75 }
  76
  77 static int hns_roce_del_gid(const struct ib_gid_attr *attr, void **context)
  78 {
  79         struct hns_roce_dev *hr_dev = to_hr_dev(attr->device);
  80         u32 port = attr->port_num - 1;
  81         int ret;
  82
  83         if (port >= hr_dev->caps.num_ports)
  84                 return -EINVAL;
  85
  86         ret = hr_dev->hw->set_gid(hr_dev, attr->index, NULL, NULL);
  87
  88         return ret;
  89 }
  90
  91 static int handle_en_event(struct hns_roce_dev *hr_dev, u32 port,
  92                            unsigned long event)
  93 {
  94         struct device *dev = hr_dev->dev;
  95         struct net_device *netdev;
  96         int ret = 0;
  97
  98         netdev = hr_dev->iboe.netdevs[port];
  99         if (!netdev) {
 100                 dev_err(dev, "can't find netdev on port(%u)!\n", port);
 101                 return -ENODEV;
 102         }
 103
 104         switch (event) {
 105         case NETDEV_UP:
 106         case NETDEV_CHANGE:
 107         case NETDEV_REGISTER:
 108         case NETDEV_CHANGEADDR:
 109                 ret = hns_roce_set_mac(hr_dev, port, netdev->dev_addr);
 110                 break;
 111         case NETDEV_DOWN:
 112                 /*
 113                  * In v1 engine, only support all ports closed together.
 114                  */
 115                 break;
 116         default:
 117                 dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event));
 118                 break;
 119         }
 120
 121         return ret;
 122 }
 123
 124 static int hns_roce_netdev_event(struct notifier_block *self,
 125                                  unsigned long event, void *ptr)
 126 {
 127         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 128         struct hns_roce_ib_iboe *iboe = NULL;
 129         struct hns_roce_dev *hr_dev = NULL;
 130         int ret;
 131         u32 port;
 132
 133         hr_dev = container_of(self, struct hns_roce_dev, iboe.nb);
 134         iboe = &hr_dev->iboe;
 135
 136         for (port = 0; port < hr_dev->caps.num_ports; port++) {
 137                 if (dev == iboe->netdevs[port]) {
 138                         ret = handle_en_event(hr_dev, port, event);
 139                         if (ret)
 140                                 return NOTIFY_DONE;
 141                         break;
 142                 }
 143         }
 144
 145         return NOTIFY_DONE;
 146 }
 147
 148 static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev)
 149 {
 150         int ret;
 151         u8 i;
 152
 153         for (i = 0; i < hr_dev->caps.num_ports; i++) {
 154                 ret = hns_roce_set_mac(hr_dev, i,
 155                                        hr_dev->iboe.netdevs[i]->dev_addr);
 156                 if (ret)
 157                         return ret;
 158         }
 159
 160         return 0;
 161 }
 162
 163 static int hns_roce_query_device(struct ib_device *ib_dev,
 164                                  struct ib_device_attr *props,
 165                                  struct ib_udata *uhw)
 166 {
 167         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 168
 169         memset(props, 0, sizeof(*props));
 170
 171         props->fw_ver = hr_dev->caps.fw_ver;
 172         props->sys_image_guid = cpu_to_be64(hr_dev->sys_image_guid);
 173         props->max_mr_size = (u64)(~(0ULL));
 174         props->page_size_cap = hr_dev->caps.page_size_cap;
 175         props->vendor_id = hr_dev->vendor_id;
 176         props->vendor_part_id = hr_dev->vendor_part_id;
 177         props->hw_ver = hr_dev->hw_rev;
 178         props->max_qp = hr_dev->caps.num_qps;
 179         props->max_qp_wr = hr_dev->caps.max_wqes;
 180         props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
 181                                   IB_DEVICE_RC_RNR_NAK_GEN;
 182         props->max_send_sge = hr_dev->caps.max_sq_sg;
 183         props->max_recv_sge = hr_dev->caps.max_rq_sg;
 184         props->max_sge_rd = 1;
 185         props->max_cq = hr_dev->caps.num_cqs;
 186         props->max_cqe = hr_dev->caps.max_cqes;
 187         props->max_mr = hr_dev->caps.num_mtpts;
 188         props->max_pd = hr_dev->caps.num_pds;
 189         props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma;
 190         props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma;
 191         props->atomic_cap = hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_ATOMIC ?
 192                             IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 193         props->max_pkeys = 1;
 194         props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay;
 195         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ) {
 196                 props->max_srq = hr_dev->caps.num_srqs;
 197                 props->max_srq_wr = hr_dev->caps.max_srq_wrs;
 198                 props->max_srq_sge = hr_dev->caps.max_srq_sges;
 199         }
 200
 201         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_FRMR &&
 202             hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09) {
 203                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 204                 props->max_fast_reg_page_list_len = HNS_ROCE_FRMR_MAX_PA;
 205         }
 206
 207         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_XRC)
 208                 props->device_cap_flags |= IB_DEVICE_XRC;
 209
 210         return 0;
 211 }
 212
 213 static int hns_roce_query_port(struct ib_device *ib_dev, u32 port_num,
 214                                struct ib_port_attr *props)
 215 {
 216         struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 217         struct device *dev = hr_dev->dev;
 218         struct net_device *net_dev;
 219         unsigned long flags;
 220         enum ib_mtu mtu;
 221         u32 port;
 222
 223         port = port_num - 1;
 224
 225         /* props being zeroed by the caller, avoid zeroing it here */
 226
 227         props->max_mtu = hr_dev->caps.max_mtu;
 228         props->gid_tbl_len = hr_dev->caps.gid_table_len[port];
 229         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 230                                 IB_PORT_VENDOR_CLASS_SUP |
 231                                 IB_PORT_BOOT_MGMT_SUP;
 232         props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN;
 233         props->pkey_tbl_len = 1;
 234         props->active_width = IB_WIDTH_4X;
 235         props->active_speed = 1;
 236
 237         spin_lock_irqsave(&hr_dev->iboe.lock, flags);
 238
 239         net_dev = hr_dev->iboe.netdevs[port];
 240         if (!net_dev) {
 241                 spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 242                 dev_err(dev, "find netdev %u failed!\n", port);
 243                 return -EINVAL;
 244         }
 245
 246         mtu = iboe_get_mtu(net_dev->mtu);
 247         props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256;
 248         props->state = netif_running(net_dev) && netif_carrier_ok(net_dev) ?
 249                                IB_PORT_ACTIVE :
 250                                IB_PORT_DOWN;
 251         props->phys_state = props->state == IB_PORT_ACTIVE ?
 252                                     IB_PORT_PHYS_STATE_LINK_UP :
 253                                     IB_PORT_PHYS_STATE_DISABLED;
 254
 255         spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
 256
 257         return 0;
 258 }
 259
 260 static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device,
 261                                                     u32 port_num)
 262 {
 263         return IB_LINK_LAYER_ETHERNET;
 264 }
 265
 266 static int hns_roce_query_pkey(struct ib_device *ib_dev, u32 port, u16 index,
 267                                u16 *pkey)
 268 {
 269         if (index > 0)
 270                 return -EINVAL;
 271
 272         *pkey = PKEY_ID;
 273
 274         return 0;
 275 }
 276
 277 static int hns_roce_modify_device(struct ib_device *ib_dev, int mask,
 278                                   struct ib_device_modify *props)
 279 {
 280         unsigned long flags;
 281
 282         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 283                 return -EOPNOTSUPP;
 284
 285         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 286                 spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags);
 287                 memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE);
 288                 spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags);
 289         }
 290
 291         return 0;
 292 }
 293
 294 struct hns_user_mmap_entry *
 295 hns_roce_user_mmap_entry_insert(struct ib_ucontext *ucontext, u64 address,
 296                                 size_t length,
 297                                 enum hns_roce_mmap_type mmap_type)
 298 {
 299         struct hns_user_mmap_entry *entry;
 300         int ret;
 301
 302         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 303         if (!entry)
 304                 return NULL;
 305
 306         entry->address = address;
 307         entry->mmap_type = mmap_type;
 308
 309         switch (mmap_type) {
 310         /* pgoff 0 must be used by DB for compatibility */
 311         case HNS_ROCE_MMAP_TYPE_DB:
 312                 ret = rdma_user_mmap_entry_insert_exact(
 313                                 ucontext, &entry->rdma_entry, length, 0);
 314                 break;
 315         case HNS_ROCE_MMAP_TYPE_DWQE:
 316                 ret = rdma_user_mmap_entry_insert_range(
 317                                 ucontext, &entry->rdma_entry, length, 1,
 318                                 U32_MAX);
 319                 break;
 320         default:
 321                 ret = -EINVAL;
 322                 break;
 323         }
 324
 325         if (ret) {
 326                 kfree(entry);
 327                 return NULL;
 328         }
 329
 330         return entry;
 331 }
 332
 333 static void hns_roce_dealloc_uar_entry(struct hns_roce_ucontext *context)
 334 {
 335         if (context->db_mmap_entry)
 336                 rdma_user_mmap_entry_remove(
 337                         &context->db_mmap_entry->rdma_entry);
 338 }
 339
 340 static int hns_roce_alloc_uar_entry(struct ib_ucontext *uctx)
 341 {
 342         struct hns_roce_ucontext *context = to_hr_ucontext(uctx);
 343         u64 address;
 344
 345         address = context->uar.pfn << PAGE_SHIFT;
 346         context->db_mmap_entry = hns_roce_user_mmap_entry_insert(
 347                 uctx, address, PAGE_SIZE, HNS_ROCE_MMAP_TYPE_DB);
 348         if (!context->db_mmap_entry)
 349                 return -ENOMEM;
 350
 351         return 0;
 352 }
 353
 354 static int hns_roce_alloc_ucontext(struct ib_ucontext *uctx,
 355                                    struct ib_udata *udata)
 356 {
 357         struct hns_roce_ucontext *context = to_hr_ucontext(uctx);
 358         struct hns_roce_dev *hr_dev = to_hr_dev(uctx->device);
 359         struct hns_roce_ib_alloc_ucontext_resp resp = {};
 360         struct hns_roce_ib_alloc_ucontext ucmd = {};
 361         int ret;
 362
 363         if (!hr_dev->active)
 364                 return -EAGAIN;
 365
 366         resp.qp_tab_size = hr_dev->caps.num_qps;
 367         resp.srq_tab_size = hr_dev->caps.num_srqs;
 368
 369         ret = ib_copy_from_udata(&ucmd, udata,
 370                                  min(udata->inlen, sizeof(ucmd)));
 371         if (ret)
 372                 return ret;
 373
 374         if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
 375                 context->config = ucmd.config & HNS_ROCE_EXSGE_FLAGS;
 376
 377         if (context->config & HNS_ROCE_EXSGE_FLAGS) {
 378                 resp.config |= HNS_ROCE_RSP_EXSGE_FLAGS;
 379                 resp.max_inline_data = hr_dev->caps.max_sq_inline;
 380         }
 381
 382         ret = hns_roce_uar_alloc(hr_dev, &context->uar);
 383         if (ret)
 384                 goto error_fail_uar_alloc;
 385
 386         ret = hns_roce_alloc_uar_entry(uctx);
 387         if (ret)
 388                 goto error_fail_uar_entry;
 389
 390         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_CQ_RECORD_DB ||
 391             hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) {
 392                 INIT_LIST_HEAD(&context->page_list);
 393                 mutex_init(&context->page_mutex);
 394         }
 395
 396         resp.cqe_size = hr_dev->caps.cqe_sz;
 397
 398         ret = ib_copy_to_udata(udata, &resp,
 399                                min(udata->outlen, sizeof(resp)));
 400         if (ret)
 401                 goto error_fail_copy_to_udata;
 402
 403         return 0;
 404
 405 error_fail_copy_to_udata:
 406         hns_roce_dealloc_uar_entry(context);
 407
 408 error_fail_uar_entry:
 409         ida_free(&hr_dev->uar_ida.ida, (int)context->uar.logic_idx);
 410
 411 error_fail_uar_alloc:
 412         return ret;
 413 }
 414
 415 static void hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext)
 416 {
 417         struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext);
 418         struct hns_roce_dev *hr_dev = to_hr_dev(ibcontext->device);
 419
 420         hns_roce_dealloc_uar_entry(context);
 421
 422         ida_free(&hr_dev->uar_ida.ida, (int)context->uar.logic_idx);
 423 }
 424
 425 static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma)
 426 {
 427         struct rdma_user_mmap_entry *rdma_entry;
 428         struct hns_user_mmap_entry *entry;
 429         phys_addr_t pfn;
 430         pgprot_t prot;
 431         int ret;
 432
 433         rdma_entry = rdma_user_mmap_entry_get_pgoff(uctx, vma->vm_pgoff);
 434         if (!rdma_entry)
 435                 return -EINVAL;
 436
 437         entry = to_hns_mmap(rdma_entry);
 438         pfn = entry->address >> PAGE_SHIFT;
 439
 440         switch (entry->mmap_type) {
 441         case HNS_ROCE_MMAP_TYPE_DB:
 442         case HNS_ROCE_MMAP_TYPE_DWQE:
 443                 prot = pgprot_device(vma->vm_page_prot);
 444                 break;
 445         default:
 446                 ret = -EINVAL;
 447                 goto out;
 448         }
 449
 450         ret = rdma_user_mmap_io(uctx, vma, pfn, rdma_entry->npages * PAGE_SIZE,
 451                                 prot, rdma_entry);
 452
 453 out:
 454         rdma_user_mmap_entry_put(rdma_entry);
 455         return ret;
 456 }
 457
 458 static void hns_roce_free_mmap(struct rdma_user_mmap_entry *rdma_entry)
 459 {
 460         struct hns_user_mmap_entry *entry = to_hns_mmap(rdma_entry);
 461
 462         kfree(entry);
 463 }
 464
 465 static int hns_roce_port_immutable(struct ib_device *ib_dev, u32 port_num,
 466                                    struct ib_port_immutable *immutable)
 467 {
 468         struct ib_port_attr attr;
 469         int ret;
 470
 471         ret = ib_query_port(ib_dev, port_num, &attr);
 472         if (ret)
 473                 return ret;
 474
 475         immutable->pkey_tbl_len = attr.pkey_tbl_len;
 476         immutable->gid_tbl_len = attr.gid_tbl_len;
 477
 478         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
 479         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
 480         if (to_hr_dev(ib_dev)->caps.flags & HNS_ROCE_CAP_FLAG_ROCE_V1_V2)
 481                 immutable->core_cap_flags |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
 482
 483         return 0;
 484 }
 485
 486 static void hns_roce_disassociate_ucontext(struct ib_ucontext *ibcontext)
 487 {
 488 }
 489
 490 static void hns_roce_get_fw_ver(struct ib_device *device, char *str)
 491 {
 492         u64 fw_ver = to_hr_dev(device)->caps.fw_ver;
 493         unsigned int major, minor, sub_minor;
 494
 495         major = upper_32_bits(fw_ver);
 496         minor = high_16_bits(lower_32_bits(fw_ver));
 497         sub_minor = low_16_bits(fw_ver);
 498
 499         snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%04u", major, minor,
 500                  sub_minor);
 501 }
 502
 503 static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
 504 {
 505         struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
 506
 507         hr_dev->active = false;
 508         unregister_netdevice_notifier(&iboe->nb);
 509         ib_unregister_device(&hr_dev->ib_dev);
 510 }
 511
 512 static const struct ib_device_ops hns_roce_dev_ops = {
 513         .owner = THIS_MODULE,
 514         .driver_id = RDMA_DRIVER_HNS,
 515         .uverbs_abi_ver = 1,
 516         .uverbs_no_driver_id_binding = 1,
 517
 518         .get_dev_fw_str = hns_roce_get_fw_ver,
 519         .add_gid = hns_roce_add_gid,
 520         .alloc_pd = hns_roce_alloc_pd,
 521         .alloc_ucontext = hns_roce_alloc_ucontext,
 522         .create_ah = hns_roce_create_ah,
 523         .create_user_ah = hns_roce_create_ah,
 524         .create_cq = hns_roce_create_cq,
 525         .create_qp = hns_roce_create_qp,
 526         .dealloc_pd = hns_roce_dealloc_pd,
 527         .dealloc_ucontext = hns_roce_dealloc_ucontext,
 528         .del_gid = hns_roce_del_gid,
 529         .dereg_mr = hns_roce_dereg_mr,
 530         .destroy_ah = hns_roce_destroy_ah,
 531         .destroy_cq = hns_roce_destroy_cq,
 532         .disassociate_ucontext = hns_roce_disassociate_ucontext,
 533         .get_dma_mr = hns_roce_get_dma_mr,
 534         .get_link_layer = hns_roce_get_link_layer,
 535         .get_port_immutable = hns_roce_port_immutable,
 536         .mmap = hns_roce_mmap,
 537         .mmap_free = hns_roce_free_mmap,
 538         .modify_device = hns_roce_modify_device,
 539         .modify_qp = hns_roce_modify_qp,
 540         .query_ah = hns_roce_query_ah,
 541         .query_device = hns_roce_query_device,
 542         .query_pkey = hns_roce_query_pkey,
 543         .query_port = hns_roce_query_port,
 544         .reg_user_mr = hns_roce_reg_user_mr,
 545
 546         INIT_RDMA_OBJ_SIZE(ib_ah, hns_roce_ah, ibah),
 547         INIT_RDMA_OBJ_SIZE(ib_cq, hns_roce_cq, ib_cq),
 548         INIT_RDMA_OBJ_SIZE(ib_pd, hns_roce_pd, ibpd),
 549         INIT_RDMA_OBJ_SIZE(ib_qp, hns_roce_qp, ibqp),
 550         INIT_RDMA_OBJ_SIZE(ib_ucontext, hns_roce_ucontext, ibucontext),
 551 };
 552
 553 static const struct ib_device_ops hns_roce_dev_mr_ops = {
 554         .rereg_user_mr = hns_roce_rereg_user_mr,
 555 };
 556
 557 static const struct ib_device_ops hns_roce_dev_mw_ops = {
 558         .alloc_mw = hns_roce_alloc_mw,
 559         .dealloc_mw = hns_roce_dealloc_mw,
 560
 561         INIT_RDMA_OBJ_SIZE(ib_mw, hns_roce_mw, ibmw),
 562 };
 563
 564 static const struct ib_device_ops hns_roce_dev_frmr_ops = {
 565         .alloc_mr = hns_roce_alloc_mr,
 566         .map_mr_sg = hns_roce_map_mr_sg,
 567 };
 568
 569 static const struct ib_device_ops hns_roce_dev_srq_ops = {
 570         .create_srq = hns_roce_create_srq,
 571         .destroy_srq = hns_roce_destroy_srq,
 572
 573         INIT_RDMA_OBJ_SIZE(ib_srq, hns_roce_srq, ibsrq),
 574 };
 575
 576 static const struct ib_device_ops hns_roce_dev_xrcd_ops = {
 577         .alloc_xrcd = hns_roce_alloc_xrcd,
 578         .dealloc_xrcd = hns_roce_dealloc_xrcd,
 579
 580         INIT_RDMA_OBJ_SIZE(ib_xrcd, hns_roce_xrcd, ibxrcd),
 581 };
 582
 583 static const struct ib_device_ops hns_roce_dev_restrack_ops = {
 584         .fill_res_cq_entry = hns_roce_fill_res_cq_entry,
 585         .fill_res_cq_entry_raw = hns_roce_fill_res_cq_entry_raw,
 586         .fill_res_qp_entry = hns_roce_fill_res_qp_entry,
 587         .fill_res_qp_entry_raw = hns_roce_fill_res_qp_entry_raw,
 588         .fill_res_mr_entry = hns_roce_fill_res_mr_entry,
 589         .fill_res_mr_entry_raw = hns_roce_fill_res_mr_entry_raw,
 590 };
 591
 592 static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 593 {
 594         int ret;
 595         struct hns_roce_ib_iboe *iboe = NULL;
 596         struct ib_device *ib_dev = NULL;
 597         struct device *dev = hr_dev->dev;
 598         unsigned int i;
 599
 600         iboe = &hr_dev->iboe;
 601         spin_lock_init(&iboe->lock);
 602
 603         ib_dev = &hr_dev->ib_dev;
 604
 605         ib_dev->node_type = RDMA_NODE_IB_CA;
 606         ib_dev->dev.parent = dev;
 607
 608         ib_dev->phys_port_cnt = hr_dev->caps.num_ports;
 609         ib_dev->local_dma_lkey = hr_dev->caps.reserved_lkey;
 610         ib_dev->num_comp_vectors = hr_dev->caps.num_comp_vectors;
 611
 612         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_REREG_MR)
 613                 ib_set_device_ops(ib_dev, &hns_roce_dev_mr_ops);
 614
 615         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_MW)
 616                 ib_set_device_ops(ib_dev, &hns_roce_dev_mw_ops);
 617
 618         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_FRMR)
 619                 ib_set_device_ops(ib_dev, &hns_roce_dev_frmr_ops);
 620
 621         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ) {
 622                 ib_set_device_ops(ib_dev, &hns_roce_dev_srq_ops);
 623                 ib_set_device_ops(ib_dev, hr_dev->hw->hns_roce_dev_srq_ops);
 624         }
 625
 626         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_XRC)
 627                 ib_set_device_ops(ib_dev, &hns_roce_dev_xrcd_ops);
 628
 629         ib_set_device_ops(ib_dev, hr_dev->hw->hns_roce_dev_ops);
 630         ib_set_device_ops(ib_dev, &hns_roce_dev_ops);
 631         ib_set_device_ops(ib_dev, &hns_roce_dev_restrack_ops);
 632         for (i = 0; i < hr_dev->caps.num_ports; i++) {
 633                 if (!hr_dev->iboe.netdevs[i])
 634                         continue;
 635
 636                 ret = ib_device_set_netdev(ib_dev, hr_dev->iboe.netdevs[i],
 637                                            i + 1);
 638                 if (ret)
 639                         return ret;
 640         }
 641         dma_set_max_seg_size(dev, UINT_MAX);
 642         ret = ib_register_device(ib_dev, "hns_%d", dev);
 643         if (ret) {
 644                 dev_err(dev, "ib_register_device failed!\n");
 645                 return ret;
 646         }
 647
 648         ret = hns_roce_setup_mtu_mac(hr_dev);
 649         if (ret) {
 650                 dev_err(dev, "setup_mtu_mac failed!\n");
 651                 goto error_failed_setup_mtu_mac;
 652         }
 653
 654         iboe->nb.notifier_call = hns_roce_netdev_event;
 655         ret = register_netdevice_notifier(&iboe->nb);
 656         if (ret) {
 657                 dev_err(dev, "register_netdevice_notifier failed!\n");
 658                 goto error_failed_setup_mtu_mac;
 659         }
 660
 661         hr_dev->active = true;
 662         return 0;
 663
 664 error_failed_setup_mtu_mac:
 665         ib_unregister_device(ib_dev);
 666
 667         return ret;
 668 }
 669
 670 static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 671 {
 672         struct device *dev = hr_dev->dev;
 673         int ret;
 674
 675         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
 676                                       HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
 677                                       hr_dev->caps.num_mtpts);
 678         if (ret) {
 679                 dev_err(dev, "failed to init MTPT context memory, aborting.\n");
 680                 return ret;
 681         }
 682
 683         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
 684                                       HEM_TYPE_QPC, hr_dev->caps.qpc_sz,
 685                                       hr_dev->caps.num_qps);
 686         if (ret) {
 687                 dev_err(dev, "failed to init QP context memory, aborting.\n");
 688                 goto err_unmap_dmpt;
 689         }
 690
 691         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table,
 692                                       HEM_TYPE_IRRL,
 693                                       hr_dev->caps.irrl_entry_sz *
 694                                       hr_dev->caps.max_qp_init_rdma,
 695                                       hr_dev->caps.num_qps);
 696         if (ret) {
 697                 dev_err(dev, "failed to init irrl_table memory, aborting.\n");
 698                 goto err_unmap_qp;
 699         }
 700
 701         if (hr_dev->caps.trrl_entry_sz) {
 702                 ret = hns_roce_init_hem_table(hr_dev,
 703                                               &hr_dev->qp_table.trrl_table,
 704                                               HEM_TYPE_TRRL,
 705                                               hr_dev->caps.trrl_entry_sz *
 706                                               hr_dev->caps.max_qp_dest_rdma,
 707                                               hr_dev->caps.num_qps);
 708                 if (ret) {
 709                         dev_err(dev,
 710                                 "failed to init trrl_table memory, aborting.\n");
 711                         goto err_unmap_irrl;
 712                 }
 713         }
 714
 715         ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
 716                                       HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
 717                                       hr_dev->caps.num_cqs);
 718         if (ret) {
 719                 dev_err(dev, "failed to init CQ context memory, aborting.\n");
 720                 goto err_unmap_trrl;
 721         }
 722
 723         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ) {
 724                 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->srq_table.table,
 725                                               HEM_TYPE_SRQC,
 726                                               hr_dev->caps.srqc_entry_sz,
 727                                               hr_dev->caps.num_srqs);
 728                 if (ret) {
 729                         dev_err(dev,
 730                                 "failed to init SRQ context memory, aborting.\n");
 731                         goto err_unmap_cq;
 732                 }
 733         }
 734
 735         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL) {
 736                 ret = hns_roce_init_hem_table(hr_dev,
 737                                               &hr_dev->qp_table.sccc_table,
 738                                               HEM_TYPE_SCCC,
 739                                               hr_dev->caps.sccc_sz,
 740                                               hr_dev->caps.num_qps);
 741                 if (ret) {
 742                         dev_err(dev,
 743                                 "failed to init SCC context memory, aborting.\n");
 744                         goto err_unmap_srq;
 745                 }
 746         }
 747
 748         if (hr_dev->caps.qpc_timer_entry_sz) {
 749                 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qpc_timer_table,
 750                                               HEM_TYPE_QPC_TIMER,
 751                                               hr_dev->caps.qpc_timer_entry_sz,
 752                                               hr_dev->caps.qpc_timer_bt_num);
 753                 if (ret) {
 754                         dev_err(dev,
 755                                 "failed to init QPC timer memory, aborting.\n");
 756                         goto err_unmap_ctx;
 757                 }
 758         }
 759
 760         if (hr_dev->caps.cqc_timer_entry_sz) {
 761                 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cqc_timer_table,
 762                                               HEM_TYPE_CQC_TIMER,
 763                                               hr_dev->caps.cqc_timer_entry_sz,
 764                                               hr_dev->caps.cqc_timer_bt_num);
 765                 if (ret) {
 766                         dev_err(dev,
 767                                 "failed to init CQC timer memory, aborting.\n");
 768                         goto err_unmap_qpc_timer;
 769                 }
 770         }
 771
 772         if (hr_dev->caps.gmv_entry_sz) {
 773                 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->gmv_table,
 774                                               HEM_TYPE_GMV,
 775                                               hr_dev->caps.gmv_entry_sz,
 776                                               hr_dev->caps.gmv_entry_num);
 777                 if (ret) {
 778                         dev_err(dev,
 779                                 "failed to init gmv table memory, ret = %d\n",
 780                                 ret);
 781                         goto err_unmap_cqc_timer;
 782                 }
 783         }
 784
 785         return 0;
 786
 787 err_unmap_cqc_timer:
 788         if (hr_dev->caps.cqc_timer_entry_sz)
 789                 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->cqc_timer_table);
 790
 791 err_unmap_qpc_timer:
 792         if (hr_dev->caps.qpc_timer_entry_sz)
 793                 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qpc_timer_table);
 794
 795 err_unmap_ctx:
 796         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL)
 797                 hns_roce_cleanup_hem_table(hr_dev,
 798                                            &hr_dev->qp_table.sccc_table);
 799 err_unmap_srq:
 800         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ)
 801                 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->srq_table.table);
 802
 803 err_unmap_cq:
 804         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->cq_table.table);
 805
 806 err_unmap_trrl:
 807         if (hr_dev->caps.trrl_entry_sz)
 808                 hns_roce_cleanup_hem_table(hr_dev,
 809                                            &hr_dev->qp_table.trrl_table);
 810
 811 err_unmap_irrl:
 812         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table);
 813
 814 err_unmap_qp:
 815         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table);
 816
 817 err_unmap_dmpt:
 818         hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);
 819
 820         return ret;
 821 }
 822
 823 /**
 824  * hns_roce_setup_hca - setup host channel adapter
 825  * @hr_dev: pointer to hns roce device
 826  * Return : int
 827  */
 828 static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev)
 829 {
 830         struct device *dev = hr_dev->dev;
 831         int ret;
 832
 833         spin_lock_init(&hr_dev->sm_lock);
 834
 835         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_CQ_RECORD_DB ||
 836             hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) {
 837                 INIT_LIST_HEAD(&hr_dev->pgdir_list);
 838                 mutex_init(&hr_dev->pgdir_mutex);
 839         }
 840
 841         hns_roce_init_uar_table(hr_dev);
 842
 843         ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar);
 844         if (ret) {
 845                 dev_err(dev, "failed to allocate priv_uar.\n");
 846                 goto err_uar_table_free;
 847         }
 848
 849         ret = hns_roce_init_qp_table(hr_dev);
 850         if (ret) {
 851                 dev_err(dev, "failed to init qp_table.\n");
 852                 goto err_uar_table_free;
 853         }
 854
 855         hns_roce_init_pd_table(hr_dev);
 856
 857         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_XRC)
 858                 hns_roce_init_xrcd_table(hr_dev);
 859
 860         hns_roce_init_mr_table(hr_dev);
 861
 862         hns_roce_init_cq_table(hr_dev);
 863
 864         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ)
 865                 hns_roce_init_srq_table(hr_dev);
 866
 867         return 0;
 868
 869 err_uar_table_free:
 870         ida_destroy(&hr_dev->uar_ida.ida);
 871         return ret;
 872 }
 873
 874 static void check_and_get_armed_cq(struct list_head *cq_list, struct ib_cq *cq)
 875 {
 876         struct hns_roce_cq *hr_cq = to_hr_cq(cq);
 877         unsigned long flags;
 878
 879         spin_lock_irqsave(&hr_cq->lock, flags);
 880         if (cq->comp_handler) {
 881                 if (!hr_cq->is_armed) {
 882                         hr_cq->is_armed = 1;
 883                         list_add_tail(&hr_cq->node, cq_list);
 884                 }
 885         }
 886         spin_unlock_irqrestore(&hr_cq->lock, flags);
 887 }
 888
 889 void hns_roce_handle_device_err(struct hns_roce_dev *hr_dev)
 890 {
 891         struct hns_roce_qp *hr_qp;
 892         struct hns_roce_cq *hr_cq;
 893         struct list_head cq_list;
 894         unsigned long flags_qp;
 895         unsigned long flags;
 896
 897         INIT_LIST_HEAD(&cq_list);
 898
 899         spin_lock_irqsave(&hr_dev->qp_list_lock, flags);
 900         list_for_each_entry(hr_qp, &hr_dev->qp_list, node) {
 901                 spin_lock_irqsave(&hr_qp->sq.lock, flags_qp);
 902                 if (hr_qp->sq.tail != hr_qp->sq.head)
 903                         check_and_get_armed_cq(&cq_list, hr_qp->ibqp.send_cq);
 904                 spin_unlock_irqrestore(&hr_qp->sq.lock, flags_qp);
 905
 906                 spin_lock_irqsave(&hr_qp->rq.lock, flags_qp);
 907                 if ((!hr_qp->ibqp.srq) && (hr_qp->rq.tail != hr_qp->rq.head))
 908                         check_and_get_armed_cq(&cq_list, hr_qp->ibqp.recv_cq);
 909                 spin_unlock_irqrestore(&hr_qp->rq.lock, flags_qp);
 910         }
 911
 912         list_for_each_entry(hr_cq, &cq_list, node)
 913                 hns_roce_cq_completion(hr_dev, hr_cq->cqn);
 914
 915         spin_unlock_irqrestore(&hr_dev->qp_list_lock, flags);
 916 }
 917
 918 int hns_roce_init(struct hns_roce_dev *hr_dev)
 919 {
 920         struct device *dev = hr_dev->dev;
 921         int ret;
 922
 923         hr_dev->is_reset = false;
 924
 925         if (hr_dev->hw->cmq_init) {
 926                 ret = hr_dev->hw->cmq_init(hr_dev);
 927                 if (ret) {
 928                         dev_err(dev, "init RoCE Command Queue failed!\n");
 929                         return ret;
 930                 }
 931         }
 932
 933         ret = hr_dev->hw->hw_profile(hr_dev);
 934         if (ret) {
 935                 dev_err(dev, "get RoCE engine profile failed!\n");
 936                 goto error_failed_cmd_init;
 937         }
 938
 939         ret = hns_roce_cmd_init(hr_dev);
 940         if (ret) {
 941                 dev_err(dev, "cmd init failed!\n");
 942                 goto error_failed_cmd_init;
 943         }
 944
 945         /* EQ depends on poll mode, event mode depends on EQ */
 946         ret = hr_dev->hw->init_eq(hr_dev);
 947         if (ret) {
 948                 dev_err(dev, "eq init failed!\n");
 949                 goto error_failed_eq_table;
 950         }
 951
 952         if (hr_dev->cmd_mod) {
 953                 ret = hns_roce_cmd_use_events(hr_dev);
 954                 if (ret)
 955                         dev_warn(dev,
 956                                  "Cmd event  mode failed, set back to poll!\n");
 957         }
 958
 959         ret = hns_roce_init_hem(hr_dev);
 960         if (ret) {
 961                 dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n");
 962                 goto error_failed_init_hem;
 963         }
 964
 965         ret = hns_roce_setup_hca(hr_dev);
 966         if (ret) {
 967                 dev_err(dev, "setup hca failed!\n");
 968                 goto error_failed_setup_hca;
 969         }
 970
 971         if (hr_dev->hw->hw_init) {
 972                 ret = hr_dev->hw->hw_init(hr_dev);
 973                 if (ret) {
 974                         dev_err(dev, "hw_init failed!\n");
 975                         goto error_failed_engine_init;
 976                 }
 977         }
 978
 979         INIT_LIST_HEAD(&hr_dev->qp_list);
 980         spin_lock_init(&hr_dev->qp_list_lock);
 981         INIT_LIST_HEAD(&hr_dev->dip_list);
 982         spin_lock_init(&hr_dev->dip_list_lock);
 983
 984         ret = hns_roce_register_device(hr_dev);
 985         if (ret)
 986                 goto error_failed_register_device;
 987
 988         return 0;
 989
 990 error_failed_register_device:
 991         if (hr_dev->hw->hw_exit)
 992                 hr_dev->hw->hw_exit(hr_dev);
 993
 994 error_failed_engine_init:
 995         hns_roce_cleanup_bitmap(hr_dev);
 996
 997 error_failed_setup_hca:
 998         hns_roce_cleanup_hem(hr_dev);
 999
1000 error_failed_init_hem:
1001         if (hr_dev->cmd_mod)
1002                 hns_roce_cmd_use_polling(hr_dev);
1003         hr_dev->hw->cleanup_eq(hr_dev);
1004
1005 error_failed_eq_table:
1006         hns_roce_cmd_cleanup(hr_dev);
1007
1008 error_failed_cmd_init:
1009         if (hr_dev->hw->cmq_exit)
1010                 hr_dev->hw->cmq_exit(hr_dev);
1011
1012         return ret;
1013 }
1014
1015 void hns_roce_exit(struct hns_roce_dev *hr_dev)
1016 {
1017         hns_roce_unregister_device(hr_dev);
1018
1019         if (hr_dev->hw->hw_exit)
1020                 hr_dev->hw->hw_exit(hr_dev);
1021         hns_roce_cleanup_bitmap(hr_dev);
1022         hns_roce_cleanup_hem(hr_dev);
1023
1024         if (hr_dev->cmd_mod)
1025                 hns_roce_cmd_use_polling(hr_dev);
1026
1027         hr_dev->hw->cleanup_eq(hr_dev);
1028         hns_roce_cmd_cleanup(hr_dev);
1029         if (hr_dev->hw->cmq_exit)
1030                 hr_dev->hw->cmq_exit(hr_dev);
1031 }
1032
1033 MODULE_LICENSE("Dual BSD/GPL");
1034 MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
1035 MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>");
1036 MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
1037 MODULE_DESCRIPTION("HNS RoCE Driver");