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 *pkey = PKEY_ID; 479 480 return 0; 481 } 482 483 static int hns_roce_modify_device(struct ib_device *ib_dev, int mask, 484 struct ib_device_modify *props) 485 { 486 unsigned long flags; 487 488 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 489 return -EOPNOTSUPP; 490 491 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 492 spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags); 493 memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE); 494 spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags); 495 } 496 497 return 0; 498 } 499 500 static int hns_roce_modify_port(struct ib_device *ib_dev, u8 port_num, int mask, 501 struct ib_port_modify *props) 502 { 503 return 0; 504 } 505 506 static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev, 507 struct ib_udata *udata) 508 { 509 int ret = 0; 510 struct hns_roce_ucontext *context; 511 struct hns_roce_ib_alloc_ucontext_resp resp; 512 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev); 513 514 resp.qp_tab_size = hr_dev->caps.num_qps; 515 516 context = kmalloc(sizeof(*context), GFP_KERNEL); 517 if (!context) 518 return ERR_PTR(-ENOMEM); 519 520 ret = hns_roce_uar_alloc(hr_dev, &context->uar); 521 if (ret) 522 goto error_fail_uar_alloc; 523 524 ret = ib_copy_to_udata(udata, &resp, sizeof(resp)); 525 if (ret) 526 goto error_fail_copy_to_udata; 527 528 return &context->ibucontext; 529 530 error_fail_copy_to_udata: 531 hns_roce_uar_free(hr_dev, &context->uar); 532 533 error_fail_uar_alloc: 534 kfree(context); 535 536 return ERR_PTR(ret); 537 } 538 539 static int hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext) 540 { 541 struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext); 542 543 hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar); 544 kfree(context); 545 546 return 0; 547 } 548 549 static int hns_roce_mmap(struct ib_ucontext *context, 550 struct vm_area_struct *vma) 551 { 552 if (((vma->vm_end - vma->vm_start) % PAGE_SIZE) != 0) 553 return -EINVAL; 554 555 if (vma->vm_pgoff == 0) { 556 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 557 if (io_remap_pfn_range(vma, vma->vm_start, 558 to_hr_ucontext(context)->uar.pfn, 559 PAGE_SIZE, vma->vm_page_prot)) 560 return -EAGAIN; 561 562 } else { 563 return -EINVAL; 564 } 565 566 return 0; 567 } 568 569 static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num, 570 struct ib_port_immutable *immutable) 571 { 572 struct ib_port_attr attr; 573 int ret; 574 575 ret = hns_roce_query_port(ib_dev, port_num, &attr); 576 if (ret) 577 return ret; 578 579 immutable->pkey_tbl_len = attr.pkey_tbl_len; 580 immutable->gid_tbl_len = attr.gid_tbl_len; 581 582 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 583 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 584 585 return 0; 586 } 587 588 static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev) 589 { 590 struct hns_roce_ib_iboe *iboe = &hr_dev->iboe; 591 592 unregister_inetaddr_notifier(&iboe->nb_inet); 593 unregister_netdevice_notifier(&iboe->nb); 594 ib_unregister_device(&hr_dev->ib_dev); 595 } 596 597 static int hns_roce_register_device(struct hns_roce_dev *hr_dev) 598 { 599 int ret; 600 struct hns_roce_ib_iboe *iboe = NULL; 601 struct ib_device *ib_dev = NULL; 602 struct device *dev = &hr_dev->pdev->dev; 603 604 iboe = &hr_dev->iboe; 605 spin_lock_init(&iboe->lock); 606 607 ib_dev = &hr_dev->ib_dev; 608 strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX); 609 610 ib_dev->owner = THIS_MODULE; 611 ib_dev->node_type = RDMA_NODE_IB_CA; 612 ib_dev->dma_device = dev; 613 614 ib_dev->phys_port_cnt = hr_dev->caps.num_ports; 615 ib_dev->local_dma_lkey = hr_dev->caps.reserved_lkey; 616 ib_dev->num_comp_vectors = hr_dev->caps.num_comp_vectors; 617 ib_dev->uverbs_abi_ver = 1; 618 ib_dev->uverbs_cmd_mask = 619 (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) | 620 (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) | 621 (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) | 622 (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) | 623 (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) | 624 (1ULL << IB_USER_VERBS_CMD_REG_MR) | 625 (1ULL << IB_USER_VERBS_CMD_DEREG_MR) | 626 (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 627 (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) | 628 (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) | 629 (1ULL << IB_USER_VERBS_CMD_CREATE_QP) | 630 (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) | 631 (1ULL << IB_USER_VERBS_CMD_QUERY_QP) | 632 (1ULL << IB_USER_VERBS_CMD_DESTROY_QP); 633 634 /* HCA||device||port */ 635 ib_dev->modify_device = hns_roce_modify_device; 636 ib_dev->query_device = hns_roce_query_device; 637 ib_dev->query_port = hns_roce_query_port; 638 ib_dev->modify_port = hns_roce_modify_port; 639 ib_dev->get_link_layer = hns_roce_get_link_layer; 640 ib_dev->get_netdev = hns_roce_get_netdev; 641 ib_dev->query_gid = hns_roce_query_gid; 642 ib_dev->query_pkey = hns_roce_query_pkey; 643 ib_dev->alloc_ucontext = hns_roce_alloc_ucontext; 644 ib_dev->dealloc_ucontext = hns_roce_dealloc_ucontext; 645 ib_dev->mmap = hns_roce_mmap; 646 647 /* PD */ 648 ib_dev->alloc_pd = hns_roce_alloc_pd; 649 ib_dev->dealloc_pd = hns_roce_dealloc_pd; 650 651 /* AH */ 652 ib_dev->create_ah = hns_roce_create_ah; 653 ib_dev->query_ah = hns_roce_query_ah; 654 ib_dev->destroy_ah = hns_roce_destroy_ah; 655 656 /* QP */ 657 ib_dev->create_qp = hns_roce_create_qp; 658 ib_dev->modify_qp = hns_roce_modify_qp; 659 ib_dev->query_qp = hr_dev->hw->query_qp; 660 ib_dev->destroy_qp = hr_dev->hw->destroy_qp; 661 ib_dev->post_send = hr_dev->hw->post_send; 662 ib_dev->post_recv = hr_dev->hw->post_recv; 663 664 /* CQ */ 665 ib_dev->create_cq = hns_roce_ib_create_cq; 666 ib_dev->destroy_cq = hns_roce_ib_destroy_cq; 667 ib_dev->req_notify_cq = hr_dev->hw->req_notify_cq; 668 ib_dev->poll_cq = hr_dev->hw->poll_cq; 669 670 /* MR */ 671 ib_dev->get_dma_mr = hns_roce_get_dma_mr; 672 ib_dev->reg_user_mr = hns_roce_reg_user_mr; 673 ib_dev->dereg_mr = hns_roce_dereg_mr; 674 675 /* OTHERS */ 676 ib_dev->get_port_immutable = hns_roce_port_immutable; 677 678 ret = ib_register_device(ib_dev, NULL); 679 if (ret) { 680 dev_err(dev, "ib_register_device failed!\n"); 681 return ret; 682 } 683 684 ret = hns_roce_setup_mtu_gids(hr_dev); 685 if (ret) { 686 dev_err(dev, "roce_setup_mtu_gids failed!\n"); 687 goto error_failed_setup_mtu_gids; 688 } 689 690 iboe->nb.notifier_call = hns_roce_netdev_event; 691 ret = register_netdevice_notifier(&iboe->nb); 692 if (ret) { 693 dev_err(dev, "register_netdevice_notifier failed!\n"); 694 goto error_failed_setup_mtu_gids; 695 } 696 697 iboe->nb_inet.notifier_call = hns_roce_inet_event; 698 ret = register_inetaddr_notifier(&iboe->nb_inet); 699 if (ret) { 700 dev_err(dev, "register inet addr notifier failed!\n"); 701 goto error_failed_register_inetaddr_notifier; 702 } 703 704 return 0; 705 706 error_failed_register_inetaddr_notifier: 707 unregister_netdevice_notifier(&iboe->nb); 708 709 error_failed_setup_mtu_gids: 710 ib_unregister_device(ib_dev); 711 712 return ret; 713 } 714 715 static const struct of_device_id hns_roce_of_match[] = { 716 { .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, }, 717 {}, 718 }; 719 MODULE_DEVICE_TABLE(of, hns_roce_of_match); 720 721 static const struct acpi_device_id hns_roce_acpi_match[] = { 722 { "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 }, 723 {}, 724 }; 725 MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match); 726 727 static int hns_roce_node_match(struct device *dev, void *fwnode) 728 { 729 return dev->fwnode == fwnode; 730 } 731 732 static struct 733 platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode) 734 { 735 struct device *dev; 736 737 /* get the 'device'corresponding to matching 'fwnode' */ 738 dev = bus_find_device(&platform_bus_type, NULL, 739 fwnode, hns_roce_node_match); 740 /* get the platform device */ 741 return dev ? to_platform_device(dev) : NULL; 742 } 743 744 static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev) 745 { 746 int i; 747 int ret; 748 u8 phy_port; 749 int port_cnt = 0; 750 struct device *dev = &hr_dev->pdev->dev; 751 struct device_node *net_node; 752 struct net_device *netdev = NULL; 753 struct platform_device *pdev = NULL; 754 struct resource *res; 755 756 /* check if we are compatible with the underlying SoC */ 757 if (dev_of_node(dev)) { 758 const struct of_device_id *of_id; 759 760 of_id = of_match_node(hns_roce_of_match, dev->of_node); 761 if (!of_id) { 762 dev_err(dev, "device is not compatible!\n"); 763 return -ENXIO; 764 } 765 hr_dev->hw = (struct hns_roce_hw *)of_id->data; 766 if (!hr_dev->hw) { 767 dev_err(dev, "couldn't get H/W specific DT data!\n"); 768 return -ENXIO; 769 } 770 } else if (is_acpi_device_node(dev->fwnode)) { 771 const struct acpi_device_id *acpi_id; 772 773 acpi_id = acpi_match_device(hns_roce_acpi_match, dev); 774 if (!acpi_id) { 775 dev_err(dev, "device is not compatible!\n"); 776 return -ENXIO; 777 } 778 hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data; 779 if (!hr_dev->hw) { 780 dev_err(dev, "couldn't get H/W specific ACPI data!\n"); 781 return -ENXIO; 782 } 783 } else { 784 dev_err(dev, "can't read compatibility data from DT or ACPI\n"); 785 return -ENXIO; 786 } 787 788 /* get the mapped register base address */ 789 res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0); 790 if (!res) { 791 dev_err(dev, "memory resource not found!\n"); 792 return -EINVAL; 793 } 794 hr_dev->reg_base = devm_ioremap_resource(dev, res); 795 if (IS_ERR(hr_dev->reg_base)) 796 return PTR_ERR(hr_dev->reg_base); 797 798 /* read the node_guid of IB device from the DT or ACPI */ 799 ret = device_property_read_u8_array(dev, "node-guid", 800 (u8 *)&hr_dev->ib_dev.node_guid, 801 GUID_LEN); 802 if (ret) { 803 dev_err(dev, "couldn't get node_guid from DT or ACPI!\n"); 804 return ret; 805 } 806 807 /* get the RoCE associated ethernet ports or netdevices */ 808 for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) { 809 if (dev_of_node(dev)) { 810 net_node = of_parse_phandle(dev->of_node, "eth-handle", 811 i); 812 if (!net_node) 813 continue; 814 pdev = of_find_device_by_node(net_node); 815 } else if (is_acpi_device_node(dev->fwnode)) { 816 struct acpi_reference_args args; 817 struct fwnode_handle *fwnode; 818 819 ret = acpi_node_get_property_reference(dev->fwnode, 820 "eth-handle", 821 i, &args); 822 if (ret) 823 continue; 824 fwnode = acpi_fwnode_handle(args.adev); 825 pdev = hns_roce_find_pdev(fwnode); 826 } else { 827 dev_err(dev, "cannot read data from DT or ACPI\n"); 828 return -ENXIO; 829 } 830 831 if (pdev) { 832 netdev = platform_get_drvdata(pdev); 833 phy_port = (u8)i; 834 if (netdev) { 835 hr_dev->iboe.netdevs[port_cnt] = netdev; 836 hr_dev->iboe.phy_port[port_cnt] = phy_port; 837 } else { 838 dev_err(dev, "no netdev found with pdev %s\n", 839 pdev->name); 840 return -ENODEV; 841 } 842 port_cnt++; 843 } 844 } 845 846 if (port_cnt == 0) { 847 dev_err(dev, "unable to get eth-handle for available ports!\n"); 848 return -EINVAL; 849 } 850 851 hr_dev->caps.num_ports = port_cnt; 852 853 /* cmd issue mode: 0 is poll, 1 is event */ 854 hr_dev->cmd_mod = 1; 855 hr_dev->loop_idc = 0; 856 857 /* read the interrupt names from the DT or ACPI */ 858 ret = device_property_read_string_array(dev, "interrupt-names", 859 hr_dev->irq_names, 860 HNS_ROCE_MAX_IRQ_NUM); 861 if (ret < 0) { 862 dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n"); 863 return ret; 864 } 865 866 /* fetch the interrupt numbers */ 867 for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) { 868 hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i); 869 if (hr_dev->irq[i] <= 0) { 870 dev_err(dev, "platform get of irq[=%d] failed!\n", i); 871 return -EINVAL; 872 } 873 } 874 875 return 0; 876 } 877 878 static int hns_roce_init_hem(struct hns_roce_dev *hr_dev) 879 { 880 int ret; 881 struct device *dev = &hr_dev->pdev->dev; 882 883 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtt_table, 884 HEM_TYPE_MTT, hr_dev->caps.mtt_entry_sz, 885 hr_dev->caps.num_mtt_segs, 1); 886 if (ret) { 887 dev_err(dev, "Failed to init MTT context memory, aborting.\n"); 888 return ret; 889 } 890 891 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table, 892 HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz, 893 hr_dev->caps.num_mtpts, 1); 894 if (ret) { 895 dev_err(dev, "Failed to init MTPT context memory, aborting.\n"); 896 goto err_unmap_mtt; 897 } 898 899 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table, 900 HEM_TYPE_QPC, hr_dev->caps.qpc_entry_sz, 901 hr_dev->caps.num_qps, 1); 902 if (ret) { 903 dev_err(dev, "Failed to init QP context memory, aborting.\n"); 904 goto err_unmap_dmpt; 905 } 906 907 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table, 908 HEM_TYPE_IRRL, 909 hr_dev->caps.irrl_entry_sz * 910 hr_dev->caps.max_qp_init_rdma, 911 hr_dev->caps.num_qps, 1); 912 if (ret) { 913 dev_err(dev, "Failed to init irrl_table memory, aborting.\n"); 914 goto err_unmap_qp; 915 } 916 917 ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table, 918 HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz, 919 hr_dev->caps.num_cqs, 1); 920 if (ret) { 921 dev_err(dev, "Failed to init CQ context memory, aborting.\n"); 922 goto err_unmap_irrl; 923 } 924 925 return 0; 926 927 err_unmap_irrl: 928 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table); 929 930 err_unmap_qp: 931 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table); 932 933 err_unmap_dmpt: 934 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table); 935 936 err_unmap_mtt: 937 hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table); 938 939 return ret; 940 } 941 942 /** 943 * hns_roce_setup_hca - setup host channel adapter 944 * @hr_dev: pointer to hns roce device 945 * Return : int 946 */ 947 static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev) 948 { 949 int ret; 950 struct device *dev = &hr_dev->pdev->dev; 951 952 spin_lock_init(&hr_dev->sm_lock); 953 spin_lock_init(&hr_dev->bt_cmd_lock); 954 955 ret = hns_roce_init_uar_table(hr_dev); 956 if (ret) { 957 dev_err(dev, "Failed to initialize uar table. aborting\n"); 958 return ret; 959 } 960 961 ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar); 962 if (ret) { 963 dev_err(dev, "Failed to allocate priv_uar.\n"); 964 goto err_uar_table_free; 965 } 966 967 ret = hns_roce_init_pd_table(hr_dev); 968 if (ret) { 969 dev_err(dev, "Failed to init protected domain table.\n"); 970 goto err_uar_alloc_free; 971 } 972 973 ret = hns_roce_init_mr_table(hr_dev); 974 if (ret) { 975 dev_err(dev, "Failed to init memory region table.\n"); 976 goto err_pd_table_free; 977 } 978 979 ret = hns_roce_init_cq_table(hr_dev); 980 if (ret) { 981 dev_err(dev, "Failed to init completion queue table.\n"); 982 goto err_mr_table_free; 983 } 984 985 ret = hns_roce_init_qp_table(hr_dev); 986 if (ret) { 987 dev_err(dev, "Failed to init queue pair table.\n"); 988 goto err_cq_table_free; 989 } 990 991 return 0; 992 993 err_cq_table_free: 994 hns_roce_cleanup_cq_table(hr_dev); 995 996 err_mr_table_free: 997 hns_roce_cleanup_mr_table(hr_dev); 998 999 err_pd_table_free: 1000 hns_roce_cleanup_pd_table(hr_dev); 1001 1002 err_uar_alloc_free: 1003 hns_roce_uar_free(hr_dev, &hr_dev->priv_uar); 1004 1005 err_uar_table_free: 1006 hns_roce_cleanup_uar_table(hr_dev); 1007 return ret; 1008 } 1009 1010 /** 1011 * hns_roce_probe - RoCE driver entrance 1012 * @pdev: pointer to platform device 1013 * Return : int 1014 * 1015 */ 1016 static int hns_roce_probe(struct platform_device *pdev) 1017 { 1018 int ret; 1019 struct hns_roce_dev *hr_dev; 1020 struct device *dev = &pdev->dev; 1021 1022 hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev)); 1023 if (!hr_dev) 1024 return -ENOMEM; 1025 1026 memset((u8 *)hr_dev + sizeof(struct ib_device), 0, 1027 sizeof(struct hns_roce_dev) - sizeof(struct ib_device)); 1028 1029 hr_dev->pdev = pdev; 1030 platform_set_drvdata(pdev, hr_dev); 1031 1032 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) && 1033 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) { 1034 dev_err(dev, "Not usable DMA addressing mode\n"); 1035 ret = -EIO; 1036 goto error_failed_get_cfg; 1037 } 1038 1039 ret = hns_roce_get_cfg(hr_dev); 1040 if (ret) { 1041 dev_err(dev, "Get Configuration failed!\n"); 1042 goto error_failed_get_cfg; 1043 } 1044 1045 ret = hr_dev->hw->reset(hr_dev, true); 1046 if (ret) { 1047 dev_err(dev, "Reset RoCE engine failed!\n"); 1048 goto error_failed_get_cfg; 1049 } 1050 1051 hr_dev->hw->hw_profile(hr_dev); 1052 1053 ret = hns_roce_cmd_init(hr_dev); 1054 if (ret) { 1055 dev_err(dev, "cmd init failed!\n"); 1056 goto error_failed_cmd_init; 1057 } 1058 1059 ret = hns_roce_init_eq_table(hr_dev); 1060 if (ret) { 1061 dev_err(dev, "eq init failed!\n"); 1062 goto error_failed_eq_table; 1063 } 1064 1065 if (hr_dev->cmd_mod) { 1066 ret = hns_roce_cmd_use_events(hr_dev); 1067 if (ret) { 1068 dev_err(dev, "Switch to event-driven cmd failed!\n"); 1069 goto error_failed_use_event; 1070 } 1071 } 1072 1073 ret = hns_roce_init_hem(hr_dev); 1074 if (ret) { 1075 dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n"); 1076 goto error_failed_init_hem; 1077 } 1078 1079 ret = hns_roce_setup_hca(hr_dev); 1080 if (ret) { 1081 dev_err(dev, "setup hca failed!\n"); 1082 goto error_failed_setup_hca; 1083 } 1084 1085 ret = hr_dev->hw->hw_init(hr_dev); 1086 if (ret) { 1087 dev_err(dev, "hw_init failed!\n"); 1088 goto error_failed_engine_init; 1089 } 1090 1091 ret = hns_roce_register_device(hr_dev); 1092 if (ret) 1093 goto error_failed_register_device; 1094 1095 return 0; 1096 1097 error_failed_register_device: 1098 hr_dev->hw->hw_exit(hr_dev); 1099 1100 error_failed_engine_init: 1101 hns_roce_cleanup_bitmap(hr_dev); 1102 1103 error_failed_setup_hca: 1104 hns_roce_cleanup_hem(hr_dev); 1105 1106 error_failed_init_hem: 1107 if (hr_dev->cmd_mod) 1108 hns_roce_cmd_use_polling(hr_dev); 1109 1110 error_failed_use_event: 1111 hns_roce_cleanup_eq_table(hr_dev); 1112 1113 error_failed_eq_table: 1114 hns_roce_cmd_cleanup(hr_dev); 1115 1116 error_failed_cmd_init: 1117 ret = hr_dev->hw->reset(hr_dev, false); 1118 if (ret) 1119 dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n"); 1120 1121 error_failed_get_cfg: 1122 ib_dealloc_device(&hr_dev->ib_dev); 1123 1124 return ret; 1125 } 1126 1127 /** 1128 * hns_roce_remove - remove RoCE device 1129 * @pdev: pointer to platform device 1130 */ 1131 static int hns_roce_remove(struct platform_device *pdev) 1132 { 1133 struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev); 1134 1135 hns_roce_unregister_device(hr_dev); 1136 hr_dev->hw->hw_exit(hr_dev); 1137 hns_roce_cleanup_bitmap(hr_dev); 1138 hns_roce_cleanup_hem(hr_dev); 1139 1140 if (hr_dev->cmd_mod) 1141 hns_roce_cmd_use_polling(hr_dev); 1142 1143 hns_roce_cleanup_eq_table(hr_dev); 1144 hns_roce_cmd_cleanup(hr_dev); 1145 hr_dev->hw->reset(hr_dev, false); 1146 1147 ib_dealloc_device(&hr_dev->ib_dev); 1148 1149 return 0; 1150 } 1151 1152 static struct platform_driver hns_roce_driver = { 1153 .probe = hns_roce_probe, 1154 .remove = hns_roce_remove, 1155 .driver = { 1156 .name = DRV_NAME, 1157 .of_match_table = hns_roce_of_match, 1158 .acpi_match_table = ACPI_PTR(hns_roce_acpi_match), 1159 }, 1160 }; 1161 1162 module_platform_driver(hns_roce_driver); 1163 1164 MODULE_LICENSE("Dual BSD/GPL"); 1165 MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>"); 1166 MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>"); 1167 MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>"); 1168 MODULE_DESCRIPTION("HNS RoCE Driver"); 1169