drivers/infiniband/hw/efa/efa_verbs.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
   4  */
   5
   6 #include <linux/dma-buf.h>
   7 #include <linux/dma-resv.h>
   8 #include <linux/vmalloc.h>
   9 #include <linux/log2.h>
  10
  11 #include <rdma/ib_addr.h>
  12 #include <rdma/ib_umem.h>
  13 #include <rdma/ib_user_verbs.h>
  14 #include <rdma/ib_verbs.h>
  15 #include <rdma/uverbs_ioctl.h>
  16 #define UVERBS_MODULE_NAME efa_ib
  17 #include <rdma/uverbs_named_ioctl.h>
  18 #include <rdma/ib_user_ioctl_cmds.h>
  19
  20 #include "efa.h"
  21 #include "efa_io_defs.h"
  22
  23 enum {
  24         EFA_MMAP_DMA_PAGE = 0,
  25         EFA_MMAP_IO_WC,
  26         EFA_MMAP_IO_NC,
  27 };
  28
  29 struct efa_user_mmap_entry {
  30         struct rdma_user_mmap_entry rdma_entry;
  31         u64 address;
  32         u8 mmap_flag;
  33 };
  34
  35 #define EFA_DEFINE_DEVICE_STATS(op) \
  36         op(EFA_SUBMITTED_CMDS, "submitted_cmds") \
  37         op(EFA_COMPLETED_CMDS, "completed_cmds") \
  38         op(EFA_CMDS_ERR, "cmds_err") \
  39         op(EFA_NO_COMPLETION_CMDS, "no_completion_cmds") \
  40         op(EFA_KEEP_ALIVE_RCVD, "keep_alive_rcvd") \
  41         op(EFA_ALLOC_PD_ERR, "alloc_pd_err") \
  42         op(EFA_CREATE_QP_ERR, "create_qp_err") \
  43         op(EFA_CREATE_CQ_ERR, "create_cq_err") \
  44         op(EFA_REG_MR_ERR, "reg_mr_err") \
  45         op(EFA_ALLOC_UCONTEXT_ERR, "alloc_ucontext_err") \
  46         op(EFA_CREATE_AH_ERR, "create_ah_err") \
  47         op(EFA_MMAP_ERR, "mmap_err")
  48
  49 #define EFA_DEFINE_PORT_STATS(op) \
  50         op(EFA_TX_BYTES, "tx_bytes") \
  51         op(EFA_TX_PKTS, "tx_pkts") \
  52         op(EFA_RX_BYTES, "rx_bytes") \
  53         op(EFA_RX_PKTS, "rx_pkts") \
  54         op(EFA_RX_DROPS, "rx_drops") \
  55         op(EFA_SEND_BYTES, "send_bytes") \
  56         op(EFA_SEND_WRS, "send_wrs") \
  57         op(EFA_RECV_BYTES, "recv_bytes") \
  58         op(EFA_RECV_WRS, "recv_wrs") \
  59         op(EFA_RDMA_READ_WRS, "rdma_read_wrs") \
  60         op(EFA_RDMA_READ_BYTES, "rdma_read_bytes") \
  61         op(EFA_RDMA_READ_WR_ERR, "rdma_read_wr_err") \
  62         op(EFA_RDMA_READ_RESP_BYTES, "rdma_read_resp_bytes") \
  63         op(EFA_RDMA_WRITE_WRS, "rdma_write_wrs") \
  64         op(EFA_RDMA_WRITE_BYTES, "rdma_write_bytes") \
  65         op(EFA_RDMA_WRITE_WR_ERR, "rdma_write_wr_err") \
  66         op(EFA_RDMA_WRITE_RECV_BYTES, "rdma_write_recv_bytes") \
  67
  68 #define EFA_STATS_ENUM(ename, name) ename,
  69 #define EFA_STATS_STR(ename, nam) \
  70         [ename].name = nam,
  71
  72 enum efa_hw_device_stats {
  73         EFA_DEFINE_DEVICE_STATS(EFA_STATS_ENUM)
  74 };
  75
  76 static const struct rdma_stat_desc efa_device_stats_descs[] = {
  77         EFA_DEFINE_DEVICE_STATS(EFA_STATS_STR)
  78 };
  79
  80 enum efa_hw_port_stats {
  81         EFA_DEFINE_PORT_STATS(EFA_STATS_ENUM)
  82 };
  83
  84 static const struct rdma_stat_desc efa_port_stats_descs[] = {
  85         EFA_DEFINE_PORT_STATS(EFA_STATS_STR)
  86 };
  87
  88 #define EFA_DEFAULT_LINK_SPEED_GBPS   100
  89
  90 #define EFA_CHUNK_PAYLOAD_SHIFT       12
  91 #define EFA_CHUNK_PAYLOAD_SIZE        BIT(EFA_CHUNK_PAYLOAD_SHIFT)
  92 #define EFA_CHUNK_PAYLOAD_PTR_SIZE    8
  93
  94 #define EFA_CHUNK_SHIFT               12
  95 #define EFA_CHUNK_SIZE                BIT(EFA_CHUNK_SHIFT)
  96 #define EFA_CHUNK_PTR_SIZE            sizeof(struct efa_com_ctrl_buff_info)
  97
  98 #define EFA_PTRS_PER_CHUNK \
  99         ((EFA_CHUNK_SIZE - EFA_CHUNK_PTR_SIZE) / EFA_CHUNK_PAYLOAD_PTR_SIZE)
 100
 101 #define EFA_CHUNK_USED_SIZE \
 102         ((EFA_PTRS_PER_CHUNK * EFA_CHUNK_PAYLOAD_PTR_SIZE) + EFA_CHUNK_PTR_SIZE)
 103
 104 struct pbl_chunk {
 105         dma_addr_t dma_addr;
 106         u64 *buf;
 107         u32 length;
 108 };
 109
 110 struct pbl_chunk_list {
 111         struct pbl_chunk *chunks;
 112         unsigned int size;
 113 };
 114
 115 struct pbl_context {
 116         union {
 117                 struct {
 118                         dma_addr_t dma_addr;
 119                 } continuous;
 120                 struct {
 121                         u32 pbl_buf_size_in_pages;
 122                         struct scatterlist *sgl;
 123                         int sg_dma_cnt;
 124                         struct pbl_chunk_list chunk_list;
 125                 } indirect;
 126         } phys;
 127         u64 *pbl_buf;
 128         u32 pbl_buf_size_in_bytes;
 129         u8 physically_continuous;
 130 };
 131
 132 static inline struct efa_dev *to_edev(struct ib_device *ibdev)
 133 {
 134         return container_of(ibdev, struct efa_dev, ibdev);
 135 }
 136
 137 static inline struct efa_ucontext *to_eucontext(struct ib_ucontext *ibucontext)
 138 {
 139         return container_of(ibucontext, struct efa_ucontext, ibucontext);
 140 }
 141
 142 static inline struct efa_pd *to_epd(struct ib_pd *ibpd)
 143 {
 144         return container_of(ibpd, struct efa_pd, ibpd);
 145 }
 146
 147 static inline struct efa_mr *to_emr(struct ib_mr *ibmr)
 148 {
 149         return container_of(ibmr, struct efa_mr, ibmr);
 150 }
 151
 152 static inline struct efa_qp *to_eqp(struct ib_qp *ibqp)
 153 {
 154         return container_of(ibqp, struct efa_qp, ibqp);
 155 }
 156
 157 static inline struct efa_cq *to_ecq(struct ib_cq *ibcq)
 158 {
 159         return container_of(ibcq, struct efa_cq, ibcq);
 160 }
 161
 162 static inline struct efa_ah *to_eah(struct ib_ah *ibah)
 163 {
 164         return container_of(ibah, struct efa_ah, ibah);
 165 }
 166
 167 static inline struct efa_user_mmap_entry *
 168 to_emmap(struct rdma_user_mmap_entry *rdma_entry)
 169 {
 170         return container_of(rdma_entry, struct efa_user_mmap_entry, rdma_entry);
 171 }
 172
 173 #define EFA_DEV_CAP(dev, cap) \
 174         ((dev)->dev_attr.device_caps & \
 175          EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_##cap##_MASK)
 176
 177 #define is_reserved_cleared(reserved) \
 178         !memchr_inv(reserved, 0, sizeof(reserved))
 179
 180 static void *efa_zalloc_mapped(struct efa_dev *dev, dma_addr_t *dma_addr,
 181                                size_t size, enum dma_data_direction dir)
 182 {
 183         void *addr;
 184
 185         addr = alloc_pages_exact(size, GFP_KERNEL | __GFP_ZERO);
 186         if (!addr)
 187                 return NULL;
 188
 189         *dma_addr = dma_map_single(&dev->pdev->dev, addr, size, dir);
 190         if (dma_mapping_error(&dev->pdev->dev, *dma_addr)) {
 191                 ibdev_err(&dev->ibdev, "Failed to map DMA address\n");
 192                 free_pages_exact(addr, size);
 193                 return NULL;
 194         }
 195
 196         return addr;
 197 }
 198
 199 static void efa_free_mapped(struct efa_dev *dev, void *cpu_addr,
 200                             dma_addr_t dma_addr,
 201                             size_t size, enum dma_data_direction dir)
 202 {
 203         dma_unmap_single(&dev->pdev->dev, dma_addr, size, dir);
 204         free_pages_exact(cpu_addr, size);
 205 }
 206
 207 int efa_query_device(struct ib_device *ibdev,
 208                      struct ib_device_attr *props,
 209                      struct ib_udata *udata)
 210 {
 211         struct efa_com_get_device_attr_result *dev_attr;
 212         struct efa_ibv_ex_query_device_resp resp = {};
 213         struct efa_dev *dev = to_edev(ibdev);
 214         int err;
 215
 216         if (udata && udata->inlen &&
 217             !ib_is_udata_cleared(udata, 0, udata->inlen)) {
 218                 ibdev_dbg(ibdev,
 219                           "Incompatible ABI params, udata not cleared\n");
 220                 return -EINVAL;
 221         }
 222
 223         dev_attr = &dev->dev_attr;
 224
 225         memset(props, 0, sizeof(*props));
 226         props->max_mr_size = dev_attr->max_mr_pages * PAGE_SIZE;
 227         props->page_size_cap = dev_attr->page_size_cap;
 228         props->vendor_id = dev->pdev->vendor;
 229         props->vendor_part_id = dev->pdev->device;
 230         props->hw_ver = dev->pdev->subsystem_device;
 231         props->max_qp = dev_attr->max_qp;
 232         props->max_cq = dev_attr->max_cq;
 233         props->max_pd = dev_attr->max_pd;
 234         props->max_mr = dev_attr->max_mr;
 235         props->max_ah = dev_attr->max_ah;
 236         props->max_cqe = dev_attr->max_cq_depth;
 237         props->max_qp_wr = min_t(u32, dev_attr->max_sq_depth,
 238                                  dev_attr->max_rq_depth);
 239         props->max_send_sge = dev_attr->max_sq_sge;
 240         props->max_recv_sge = dev_attr->max_rq_sge;
 241         props->max_sge_rd = dev_attr->max_wr_rdma_sge;
 242         props->max_pkeys = 1;
 243
 244         if (udata && udata->outlen) {
 245                 resp.max_sq_sge = dev_attr->max_sq_sge;
 246                 resp.max_rq_sge = dev_attr->max_rq_sge;
 247                 resp.max_sq_wr = dev_attr->max_sq_depth;
 248                 resp.max_rq_wr = dev_attr->max_rq_depth;
 249                 resp.max_rdma_size = dev_attr->max_rdma_size;
 250
 251                 resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_WITH_SGID;
 252                 if (EFA_DEV_CAP(dev, RDMA_READ))
 253                         resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RDMA_READ;
 254
 255                 if (EFA_DEV_CAP(dev, RNR_RETRY))
 256                         resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RNR_RETRY;
 257
 258                 if (EFA_DEV_CAP(dev, DATA_POLLING_128))
 259                         resp.device_caps |= EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128;
 260
 261                 if (EFA_DEV_CAP(dev, RDMA_WRITE))
 262                         resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RDMA_WRITE;
 263
 264                 if (EFA_DEV_CAP(dev, UNSOLICITED_WRITE_RECV))
 265                         resp.device_caps |= EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV;
 266
 267                 if (dev->neqs)
 268                         resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS;
 269
 270                 err = ib_copy_to_udata(udata, &resp,
 271                                        min(sizeof(resp), udata->outlen));
 272                 if (err) {
 273                         ibdev_dbg(ibdev,
 274                                   "Failed to copy udata for query_device\n");
 275                         return err;
 276                 }
 277         }
 278
 279         return 0;
 280 }
 281
 282 static void efa_link_gbps_to_speed_and_width(u16 gbps,
 283                                              enum ib_port_speed *speed,
 284                                              enum ib_port_width *width)
 285 {
 286         if (gbps >= 400) {
 287                 *width = IB_WIDTH_8X;
 288                 *speed = IB_SPEED_HDR;
 289         } else if (gbps >= 200) {
 290                 *width = IB_WIDTH_4X;
 291                 *speed = IB_SPEED_HDR;
 292         } else if (gbps >= 120) {
 293                 *width = IB_WIDTH_12X;
 294                 *speed = IB_SPEED_FDR10;
 295         } else if (gbps >= 100) {
 296                 *width = IB_WIDTH_4X;
 297                 *speed = IB_SPEED_EDR;
 298         } else if (gbps >= 60) {
 299                 *width = IB_WIDTH_12X;
 300                 *speed = IB_SPEED_DDR;
 301         } else if (gbps >= 50) {
 302                 *width = IB_WIDTH_1X;
 303                 *speed = IB_SPEED_HDR;
 304         } else if (gbps >= 40) {
 305                 *width = IB_WIDTH_4X;
 306                 *speed = IB_SPEED_FDR10;
 307         } else if (gbps >= 30) {
 308                 *width = IB_WIDTH_12X;
 309                 *speed = IB_SPEED_SDR;
 310         } else {
 311                 *width = IB_WIDTH_1X;
 312                 *speed = IB_SPEED_EDR;
 313         }
 314 }
 315
 316 int efa_query_port(struct ib_device *ibdev, u32 port,
 317                    struct ib_port_attr *props)
 318 {
 319         struct efa_dev *dev = to_edev(ibdev);
 320         enum ib_port_speed link_speed;
 321         enum ib_port_width link_width;
 322         u16 link_gbps;
 323
 324         props->lmc = 1;
 325
 326         props->state = IB_PORT_ACTIVE;
 327         props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
 328         props->gid_tbl_len = 1;
 329         props->pkey_tbl_len = 1;
 330         link_gbps = dev->dev_attr.max_link_speed_gbps ?: EFA_DEFAULT_LINK_SPEED_GBPS;
 331         efa_link_gbps_to_speed_and_width(link_gbps, &link_speed, &link_width);
 332         props->active_speed = link_speed;
 333         props->active_width = link_width;
 334         props->max_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu);
 335         props->active_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu);
 336         props->max_msg_sz = dev->dev_attr.mtu;
 337         props->max_vl_num = 1;
 338
 339         return 0;
 340 }
 341
 342 int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 343                  int qp_attr_mask,
 344                  struct ib_qp_init_attr *qp_init_attr)
 345 {
 346         struct efa_dev *dev = to_edev(ibqp->device);
 347         struct efa_com_query_qp_params params = {};
 348         struct efa_com_query_qp_result result;
 349         struct efa_qp *qp = to_eqp(ibqp);
 350         int err;
 351
 352 #define EFA_QUERY_QP_SUPP_MASK \
 353         (IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT | \
 354          IB_QP_QKEY | IB_QP_SQ_PSN | IB_QP_CAP | IB_QP_RNR_RETRY)
 355
 356         if (qp_attr_mask & ~EFA_QUERY_QP_SUPP_MASK) {
 357                 ibdev_dbg(&dev->ibdev,
 358                           "Unsupported qp_attr_mask[%#x] supported[%#x]\n",
 359                           qp_attr_mask, EFA_QUERY_QP_SUPP_MASK);
 360                 return -EOPNOTSUPP;
 361         }
 362
 363         memset(qp_attr, 0, sizeof(*qp_attr));
 364         memset(qp_init_attr, 0, sizeof(*qp_init_attr));
 365
 366         params.qp_handle = qp->qp_handle;
 367         err = efa_com_query_qp(&dev->edev, &params, &result);
 368         if (err)
 369                 return err;
 370
 371         qp_attr->qp_state = result.qp_state;
 372         qp_attr->qkey = result.qkey;
 373         qp_attr->sq_psn = result.sq_psn;
 374         qp_attr->sq_draining = result.sq_draining;
 375         qp_attr->port_num = 1;
 376         qp_attr->rnr_retry = result.rnr_retry;
 377
 378         qp_attr->cap.max_send_wr = qp->max_send_wr;
 379         qp_attr->cap.max_recv_wr = qp->max_recv_wr;
 380         qp_attr->cap.max_send_sge = qp->max_send_sge;
 381         qp_attr->cap.max_recv_sge = qp->max_recv_sge;
 382         qp_attr->cap.max_inline_data = qp->max_inline_data;
 383
 384         qp_init_attr->qp_type = ibqp->qp_type;
 385         qp_init_attr->recv_cq = ibqp->recv_cq;
 386         qp_init_attr->send_cq = ibqp->send_cq;
 387         qp_init_attr->qp_context = ibqp->qp_context;
 388         qp_init_attr->cap = qp_attr->cap;
 389
 390         return 0;
 391 }
 392
 393 int efa_query_gid(struct ib_device *ibdev, u32 port, int index,
 394                   union ib_gid *gid)
 395 {
 396         struct efa_dev *dev = to_edev(ibdev);
 397
 398         memcpy(gid->raw, dev->dev_attr.addr, sizeof(dev->dev_attr.addr));
 399
 400         return 0;
 401 }
 402
 403 int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
 404                    u16 *pkey)
 405 {
 406         if (index > 0)
 407                 return -EINVAL;
 408
 409         *pkey = 0xffff;
 410         return 0;
 411 }
 412
 413 static int efa_pd_dealloc(struct efa_dev *dev, u16 pdn)
 414 {
 415         struct efa_com_dealloc_pd_params params = {
 416                 .pdn = pdn,
 417         };
 418
 419         return efa_com_dealloc_pd(&dev->edev, &params);
 420 }
 421
 422 int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
 423 {
 424         struct efa_dev *dev = to_edev(ibpd->device);
 425         struct efa_ibv_alloc_pd_resp resp = {};
 426         struct efa_com_alloc_pd_result result;
 427         struct efa_pd *pd = to_epd(ibpd);
 428         int err;
 429
 430         if (udata->inlen &&
 431             !ib_is_udata_cleared(udata, 0, udata->inlen)) {
 432                 ibdev_dbg(&dev->ibdev,
 433                           "Incompatible ABI params, udata not cleared\n");
 434                 err = -EINVAL;
 435                 goto err_out;
 436         }
 437
 438         err = efa_com_alloc_pd(&dev->edev, &result);
 439         if (err)
 440                 goto err_out;
 441
 442         pd->pdn = result.pdn;
 443         resp.pdn = result.pdn;
 444
 445         if (udata->outlen) {
 446                 err = ib_copy_to_udata(udata, &resp,
 447                                        min(sizeof(resp), udata->outlen));
 448                 if (err) {
 449                         ibdev_dbg(&dev->ibdev,
 450                                   "Failed to copy udata for alloc_pd\n");
 451                         goto err_dealloc_pd;
 452                 }
 453         }
 454
 455         ibdev_dbg(&dev->ibdev, "Allocated pd[%d]\n", pd->pdn);
 456
 457         return 0;
 458
 459 err_dealloc_pd:
 460         efa_pd_dealloc(dev, result.pdn);
 461 err_out:
 462         atomic64_inc(&dev->stats.alloc_pd_err);
 463         return err;
 464 }
 465
 466 int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
 467 {
 468         struct efa_dev *dev = to_edev(ibpd->device);
 469         struct efa_pd *pd = to_epd(ibpd);
 470
 471         ibdev_dbg(&dev->ibdev, "Dealloc pd[%d]\n", pd->pdn);
 472         efa_pd_dealloc(dev, pd->pdn);
 473         return 0;
 474 }
 475
 476 static int efa_destroy_qp_handle(struct efa_dev *dev, u32 qp_handle)
 477 {
 478         struct efa_com_destroy_qp_params params = { .qp_handle = qp_handle };
 479
 480         return efa_com_destroy_qp(&dev->edev, &params);
 481 }
 482
 483 static void efa_qp_user_mmap_entries_remove(struct efa_qp *qp)
 484 {
 485         rdma_user_mmap_entry_remove(qp->rq_mmap_entry);
 486         rdma_user_mmap_entry_remove(qp->rq_db_mmap_entry);
 487         rdma_user_mmap_entry_remove(qp->llq_desc_mmap_entry);
 488         rdma_user_mmap_entry_remove(qp->sq_db_mmap_entry);
 489 }
 490
 491 int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
 492 {
 493         struct efa_dev *dev = to_edev(ibqp->pd->device);
 494         struct efa_qp *qp = to_eqp(ibqp);
 495         int err;
 496
 497         ibdev_dbg(&dev->ibdev, "Destroy qp[%u]\n", ibqp->qp_num);
 498
 499         err = efa_destroy_qp_handle(dev, qp->qp_handle);
 500         if (err)
 501                 return err;
 502
 503         efa_qp_user_mmap_entries_remove(qp);
 504
 505         if (qp->rq_cpu_addr) {
 506                 ibdev_dbg(&dev->ibdev,
 507                           "qp->cpu_addr[0x%p] freed: size[%lu], dma[%pad]\n",
 508                           qp->rq_cpu_addr, qp->rq_size,
 509                           &qp->rq_dma_addr);
 510                 efa_free_mapped(dev, qp->rq_cpu_addr, qp->rq_dma_addr,
 511                                 qp->rq_size, DMA_TO_DEVICE);
 512         }
 513
 514         return 0;
 515 }
 516
 517 static struct rdma_user_mmap_entry*
 518 efa_user_mmap_entry_insert(struct ib_ucontext *ucontext,
 519                            u64 address, size_t length,
 520                            u8 mmap_flag, u64 *offset)
 521 {
 522         struct efa_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 523         int err;
 524
 525         if (!entry)
 526                 return NULL;
 527
 528         entry->address = address;
 529         entry->mmap_flag = mmap_flag;
 530
 531         err = rdma_user_mmap_entry_insert(ucontext, &entry->rdma_entry,
 532                                           length);
 533         if (err) {
 534                 kfree(entry);
 535                 return NULL;
 536         }
 537         *offset = rdma_user_mmap_get_offset(&entry->rdma_entry);
 538
 539         return &entry->rdma_entry;
 540 }
 541
 542 static int qp_mmap_entries_setup(struct efa_qp *qp,
 543                                  struct efa_dev *dev,
 544                                  struct efa_ucontext *ucontext,
 545                                  struct efa_com_create_qp_params *params,
 546                                  struct efa_ibv_create_qp_resp *resp)
 547 {
 548         size_t length;
 549         u64 address;
 550
 551         address = dev->db_bar_addr + resp->sq_db_offset;
 552         qp->sq_db_mmap_entry =
 553                 efa_user_mmap_entry_insert(&ucontext->ibucontext,
 554                                            address,
 555                                            PAGE_SIZE, EFA_MMAP_IO_NC,
 556                                            &resp->sq_db_mmap_key);
 557         if (!qp->sq_db_mmap_entry)
 558                 return -ENOMEM;
 559
 560         resp->sq_db_offset &= ~PAGE_MASK;
 561
 562         address = dev->mem_bar_addr + resp->llq_desc_offset;
 563         length = PAGE_ALIGN(params->sq_ring_size_in_bytes +
 564                             offset_in_page(resp->llq_desc_offset));
 565
 566         qp->llq_desc_mmap_entry =
 567                 efa_user_mmap_entry_insert(&ucontext->ibucontext,
 568                                            address, length,
 569                                            EFA_MMAP_IO_WC,
 570                                            &resp->llq_desc_mmap_key);
 571         if (!qp->llq_desc_mmap_entry)
 572                 goto err_remove_mmap;
 573
 574         resp->llq_desc_offset &= ~PAGE_MASK;
 575
 576         if (qp->rq_size) {
 577                 address = dev->db_bar_addr + resp->rq_db_offset;
 578
 579                 qp->rq_db_mmap_entry =
 580                         efa_user_mmap_entry_insert(&ucontext->ibucontext,
 581                                                    address, PAGE_SIZE,
 582                                                    EFA_MMAP_IO_NC,
 583                                                    &resp->rq_db_mmap_key);
 584                 if (!qp->rq_db_mmap_entry)
 585                         goto err_remove_mmap;
 586
 587                 resp->rq_db_offset &= ~PAGE_MASK;
 588
 589                 address = virt_to_phys(qp->rq_cpu_addr);
 590                 qp->rq_mmap_entry =
 591                         efa_user_mmap_entry_insert(&ucontext->ibucontext,
 592                                                    address, qp->rq_size,
 593                                                    EFA_MMAP_DMA_PAGE,
 594                                                    &resp->rq_mmap_key);
 595                 if (!qp->rq_mmap_entry)
 596                         goto err_remove_mmap;
 597
 598                 resp->rq_mmap_size = qp->rq_size;
 599         }
 600
 601         return 0;
 602
 603 err_remove_mmap:
 604         efa_qp_user_mmap_entries_remove(qp);
 605
 606         return -ENOMEM;
 607 }
 608
 609 static int efa_qp_validate_cap(struct efa_dev *dev,
 610                                struct ib_qp_init_attr *init_attr)
 611 {
 612         if (init_attr->cap.max_send_wr > dev->dev_attr.max_sq_depth) {
 613                 ibdev_dbg(&dev->ibdev,
 614                           "qp: requested send wr[%u] exceeds the max[%u]\n",
 615                           init_attr->cap.max_send_wr,
 616                           dev->dev_attr.max_sq_depth);
 617                 return -EINVAL;
 618         }
 619         if (init_attr->cap.max_recv_wr > dev->dev_attr.max_rq_depth) {
 620                 ibdev_dbg(&dev->ibdev,
 621                           "qp: requested receive wr[%u] exceeds the max[%u]\n",
 622                           init_attr->cap.max_recv_wr,
 623                           dev->dev_attr.max_rq_depth);
 624                 return -EINVAL;
 625         }
 626         if (init_attr->cap.max_send_sge > dev->dev_attr.max_sq_sge) {
 627                 ibdev_dbg(&dev->ibdev,
 628                           "qp: requested sge send[%u] exceeds the max[%u]\n",
 629                           init_attr->cap.max_send_sge, dev->dev_attr.max_sq_sge);
 630                 return -EINVAL;
 631         }
 632         if (init_attr->cap.max_recv_sge > dev->dev_attr.max_rq_sge) {
 633                 ibdev_dbg(&dev->ibdev,
 634                           "qp: requested sge recv[%u] exceeds the max[%u]\n",
 635                           init_attr->cap.max_recv_sge, dev->dev_attr.max_rq_sge);
 636                 return -EINVAL;
 637         }
 638         if (init_attr->cap.max_inline_data > dev->dev_attr.inline_buf_size) {
 639                 ibdev_dbg(&dev->ibdev,
 640                           "qp: requested inline data[%u] exceeds the max[%u]\n",
 641                           init_attr->cap.max_inline_data,
 642                           dev->dev_attr.inline_buf_size);
 643                 return -EINVAL;
 644         }
 645
 646         return 0;
 647 }
 648
 649 static int efa_qp_validate_attr(struct efa_dev *dev,
 650                                 struct ib_qp_init_attr *init_attr)
 651 {
 652         if (init_attr->qp_type != IB_QPT_DRIVER &&
 653             init_attr->qp_type != IB_QPT_UD) {
 654                 ibdev_dbg(&dev->ibdev,
 655                           "Unsupported qp type %d\n", init_attr->qp_type);
 656                 return -EOPNOTSUPP;
 657         }
 658
 659         if (init_attr->srq) {
 660                 ibdev_dbg(&dev->ibdev, "SRQ is not supported\n");
 661                 return -EOPNOTSUPP;
 662         }
 663
 664         if (init_attr->create_flags) {
 665                 ibdev_dbg(&dev->ibdev, "Unsupported create flags\n");
 666                 return -EOPNOTSUPP;
 667         }
 668
 669         return 0;
 670 }
 671
 672 int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr,
 673                   struct ib_udata *udata)
 674 {
 675         struct efa_com_create_qp_params create_qp_params = {};
 676         struct efa_com_create_qp_result create_qp_resp;
 677         struct efa_dev *dev = to_edev(ibqp->device);
 678         struct efa_ibv_create_qp_resp resp = {};
 679         struct efa_ibv_create_qp cmd = {};
 680         struct efa_qp *qp = to_eqp(ibqp);
 681         struct efa_ucontext *ucontext;
 682         u16 supported_efa_flags = 0;
 683         int err;
 684
 685         ucontext = rdma_udata_to_drv_context(udata, struct efa_ucontext,
 686                                              ibucontext);
 687
 688         err = efa_qp_validate_cap(dev, init_attr);
 689         if (err)
 690                 goto err_out;
 691
 692         err = efa_qp_validate_attr(dev, init_attr);
 693         if (err)
 694                 goto err_out;
 695
 696         if (offsetofend(typeof(cmd), driver_qp_type) > udata->inlen) {
 697                 ibdev_dbg(&dev->ibdev,
 698                           "Incompatible ABI params, no input udata\n");
 699                 err = -EINVAL;
 700                 goto err_out;
 701         }
 702
 703         if (udata->inlen > sizeof(cmd) &&
 704             !ib_is_udata_cleared(udata, sizeof(cmd),
 705                                  udata->inlen - sizeof(cmd))) {
 706                 ibdev_dbg(&dev->ibdev,
 707                           "Incompatible ABI params, unknown fields in udata\n");
 708                 err = -EINVAL;
 709                 goto err_out;
 710         }
 711
 712         err = ib_copy_from_udata(&cmd, udata,
 713                                  min(sizeof(cmd), udata->inlen));
 714         if (err) {
 715                 ibdev_dbg(&dev->ibdev,
 716                           "Cannot copy udata for create_qp\n");
 717                 goto err_out;
 718         }
 719
 720         if (cmd.comp_mask || !is_reserved_cleared(cmd.reserved_98)) {
 721                 ibdev_dbg(&dev->ibdev,
 722                           "Incompatible ABI params, unknown fields in udata\n");
 723                 err = -EINVAL;
 724                 goto err_out;
 725         }
 726
 727         if (EFA_DEV_CAP(dev, UNSOLICITED_WRITE_RECV))
 728                 supported_efa_flags |= EFA_CREATE_QP_WITH_UNSOLICITED_WRITE_RECV;
 729
 730         if (cmd.flags & ~supported_efa_flags) {
 731                 ibdev_dbg(&dev->ibdev, "Unsupported EFA QP create flags[%#x], supported[%#x]\n",
 732                           cmd.flags, supported_efa_flags);
 733                 err = -EOPNOTSUPP;
 734                 goto err_out;
 735         }
 736
 737         create_qp_params.uarn = ucontext->uarn;
 738         create_qp_params.pd = to_epd(ibqp->pd)->pdn;
 739
 740         if (init_attr->qp_type == IB_QPT_UD) {
 741                 create_qp_params.qp_type = EFA_ADMIN_QP_TYPE_UD;
 742         } else if (cmd.driver_qp_type == EFA_QP_DRIVER_TYPE_SRD) {
 743                 create_qp_params.qp_type = EFA_ADMIN_QP_TYPE_SRD;
 744         } else {
 745                 ibdev_dbg(&dev->ibdev,
 746                           "Unsupported qp type %d driver qp type %d\n",
 747                           init_attr->qp_type, cmd.driver_qp_type);
 748                 err = -EOPNOTSUPP;
 749                 goto err_out;
 750         }
 751
 752         ibdev_dbg(&dev->ibdev, "Create QP: qp type %d driver qp type %#x\n",
 753                   init_attr->qp_type, cmd.driver_qp_type);
 754         create_qp_params.send_cq_idx = to_ecq(init_attr->send_cq)->cq_idx;
 755         create_qp_params.recv_cq_idx = to_ecq(init_attr->recv_cq)->cq_idx;
 756         create_qp_params.sq_depth = init_attr->cap.max_send_wr;
 757         create_qp_params.sq_ring_size_in_bytes = cmd.sq_ring_size;
 758
 759         create_qp_params.rq_depth = init_attr->cap.max_recv_wr;
 760         create_qp_params.rq_ring_size_in_bytes = cmd.rq_ring_size;
 761         qp->rq_size = PAGE_ALIGN(create_qp_params.rq_ring_size_in_bytes);
 762         if (qp->rq_size) {
 763                 qp->rq_cpu_addr = efa_zalloc_mapped(dev, &qp->rq_dma_addr,
 764                                                     qp->rq_size, DMA_TO_DEVICE);
 765                 if (!qp->rq_cpu_addr) {
 766                         err = -ENOMEM;
 767                         goto err_out;
 768                 }
 769
 770                 ibdev_dbg(&dev->ibdev,
 771                           "qp->cpu_addr[0x%p] allocated: size[%lu], dma[%pad]\n",
 772                           qp->rq_cpu_addr, qp->rq_size, &qp->rq_dma_addr);
 773                 create_qp_params.rq_base_addr = qp->rq_dma_addr;
 774         }
 775
 776         create_qp_params.sl = cmd.sl;
 777
 778         if (cmd.flags & EFA_CREATE_QP_WITH_UNSOLICITED_WRITE_RECV)
 779                 create_qp_params.unsolicited_write_recv = true;
 780
 781         err = efa_com_create_qp(&dev->edev, &create_qp_params,
 782                                 &create_qp_resp);
 783         if (err)
 784                 goto err_free_mapped;
 785
 786         resp.sq_db_offset = create_qp_resp.sq_db_offset;
 787         resp.rq_db_offset = create_qp_resp.rq_db_offset;
 788         resp.llq_desc_offset = create_qp_resp.llq_descriptors_offset;
 789         resp.send_sub_cq_idx = create_qp_resp.send_sub_cq_idx;
 790         resp.recv_sub_cq_idx = create_qp_resp.recv_sub_cq_idx;
 791
 792         err = qp_mmap_entries_setup(qp, dev, ucontext, &create_qp_params,
 793                                     &resp);
 794         if (err)
 795                 goto err_destroy_qp;
 796
 797         qp->qp_handle = create_qp_resp.qp_handle;
 798         qp->ibqp.qp_num = create_qp_resp.qp_num;
 799         qp->max_send_wr = init_attr->cap.max_send_wr;
 800         qp->max_recv_wr = init_attr->cap.max_recv_wr;
 801         qp->max_send_sge = init_attr->cap.max_send_sge;
 802         qp->max_recv_sge = init_attr->cap.max_recv_sge;
 803         qp->max_inline_data = init_attr->cap.max_inline_data;
 804
 805         if (udata->outlen) {
 806                 err = ib_copy_to_udata(udata, &resp,
 807                                        min(sizeof(resp), udata->outlen));
 808                 if (err) {
 809                         ibdev_dbg(&dev->ibdev,
 810                                   "Failed to copy udata for qp[%u]\n",
 811                                   create_qp_resp.qp_num);
 812                         goto err_remove_mmap_entries;
 813                 }
 814         }
 815
 816         ibdev_dbg(&dev->ibdev, "Created qp[%d]\n", qp->ibqp.qp_num);
 817
 818         return 0;
 819
 820 err_remove_mmap_entries:
 821         efa_qp_user_mmap_entries_remove(qp);
 822 err_destroy_qp:
 823         efa_destroy_qp_handle(dev, create_qp_resp.qp_handle);
 824 err_free_mapped:
 825         if (qp->rq_size)
 826                 efa_free_mapped(dev, qp->rq_cpu_addr, qp->rq_dma_addr,
 827                                 qp->rq_size, DMA_TO_DEVICE);
 828 err_out:
 829         atomic64_inc(&dev->stats.create_qp_err);
 830         return err;
 831 }
 832
 833 static const struct {
 834         int                     valid;
 835         enum ib_qp_attr_mask    req_param;
 836         enum ib_qp_attr_mask    opt_param;
 837 } srd_qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
 838         [IB_QPS_RESET] = {
 839                 [IB_QPS_RESET] = { .valid = 1 },
 840                 [IB_QPS_INIT]  = {
 841                         .valid = 1,
 842                         .req_param = IB_QP_PKEY_INDEX |
 843                                      IB_QP_PORT |
 844                                      IB_QP_QKEY,
 845                 },
 846         },
 847         [IB_QPS_INIT] = {
 848                 [IB_QPS_RESET] = { .valid = 1 },
 849                 [IB_QPS_ERR]   = { .valid = 1 },
 850                 [IB_QPS_INIT]  = {
 851                         .valid = 1,
 852                         .opt_param = IB_QP_PKEY_INDEX |
 853                                      IB_QP_PORT |
 854                                      IB_QP_QKEY,
 855                 },
 856                 [IB_QPS_RTR]   = {
 857                         .valid = 1,
 858                         .opt_param = IB_QP_PKEY_INDEX |
 859                                      IB_QP_QKEY,
 860                 },
 861         },
 862         [IB_QPS_RTR] = {
 863                 [IB_QPS_RESET] = { .valid = 1 },
 864                 [IB_QPS_ERR]   = { .valid = 1 },
 865                 [IB_QPS_RTS]   = {
 866                         .valid = 1,
 867                         .req_param = IB_QP_SQ_PSN,
 868                         .opt_param = IB_QP_CUR_STATE |
 869                                      IB_QP_QKEY |
 870                                      IB_QP_RNR_RETRY,
 871
 872                 }
 873         },
 874         [IB_QPS_RTS] = {
 875                 [IB_QPS_RESET] = { .valid = 1 },
 876                 [IB_QPS_ERR]   = { .valid = 1 },
 877                 [IB_QPS_RTS]   = {
 878                         .valid = 1,
 879                         .opt_param = IB_QP_CUR_STATE |
 880                                      IB_QP_QKEY,
 881                 },
 882                 [IB_QPS_SQD] = {
 883                         .valid = 1,
 884                         .opt_param = IB_QP_EN_SQD_ASYNC_NOTIFY,
 885                 },
 886         },
 887         [IB_QPS_SQD] = {
 888                 [IB_QPS_RESET] = { .valid = 1 },
 889                 [IB_QPS_ERR]   = { .valid = 1 },
 890                 [IB_QPS_RTS]   = {
 891                         .valid = 1,
 892                         .opt_param = IB_QP_CUR_STATE |
 893                                      IB_QP_QKEY,
 894                 },
 895                 [IB_QPS_SQD] = {
 896                         .valid = 1,
 897                         .opt_param = IB_QP_PKEY_INDEX |
 898                                      IB_QP_QKEY,
 899                 }
 900         },
 901         [IB_QPS_SQE] = {
 902                 [IB_QPS_RESET] = { .valid = 1 },
 903                 [IB_QPS_ERR]   = { .valid = 1 },
 904                 [IB_QPS_RTS]   = {
 905                         .valid = 1,
 906                         .opt_param = IB_QP_CUR_STATE |
 907                                      IB_QP_QKEY,
 908                 }
 909         },
 910         [IB_QPS_ERR] = {
 911                 [IB_QPS_RESET] = { .valid = 1 },
 912                 [IB_QPS_ERR]   = { .valid = 1 },
 913         }
 914 };
 915
 916 static bool efa_modify_srd_qp_is_ok(enum ib_qp_state cur_state,
 917                                     enum ib_qp_state next_state,
 918                                     enum ib_qp_attr_mask mask)
 919 {
 920         enum ib_qp_attr_mask req_param, opt_param;
 921
 922         if (mask & IB_QP_CUR_STATE  &&
 923             cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
 924             cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
 925                 return false;
 926
 927         if (!srd_qp_state_table[cur_state][next_state].valid)
 928                 return false;
 929
 930         req_param = srd_qp_state_table[cur_state][next_state].req_param;
 931         opt_param = srd_qp_state_table[cur_state][next_state].opt_param;
 932
 933         if ((mask & req_param) != req_param)
 934                 return false;
 935
 936         if (mask & ~(req_param | opt_param | IB_QP_STATE))
 937                 return false;
 938
 939         return true;
 940 }
 941
 942 static int efa_modify_qp_validate(struct efa_dev *dev, struct efa_qp *qp,
 943                                   struct ib_qp_attr *qp_attr, int qp_attr_mask,
 944                                   enum ib_qp_state cur_state,
 945                                   enum ib_qp_state new_state)
 946 {
 947         int err;
 948
 949 #define EFA_MODIFY_QP_SUPP_MASK \
 950         (IB_QP_STATE | IB_QP_CUR_STATE | IB_QP_EN_SQD_ASYNC_NOTIFY | \
 951          IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY | IB_QP_SQ_PSN | \
 952          IB_QP_RNR_RETRY)
 953
 954         if (qp_attr_mask & ~EFA_MODIFY_QP_SUPP_MASK) {
 955                 ibdev_dbg(&dev->ibdev,
 956                           "Unsupported qp_attr_mask[%#x] supported[%#x]\n",
 957                           qp_attr_mask, EFA_MODIFY_QP_SUPP_MASK);
 958                 return -EOPNOTSUPP;
 959         }
 960
 961         if (qp->ibqp.qp_type == IB_QPT_DRIVER)
 962                 err = !efa_modify_srd_qp_is_ok(cur_state, new_state,
 963                                                qp_attr_mask);
 964         else
 965                 err = !ib_modify_qp_is_ok(cur_state, new_state, IB_QPT_UD,
 966                                           qp_attr_mask);
 967
 968         if (err) {
 969                 ibdev_dbg(&dev->ibdev, "Invalid modify QP parameters\n");
 970                 return -EINVAL;
 971         }
 972
 973         if ((qp_attr_mask & IB_QP_PORT) && qp_attr->port_num != 1) {
 974                 ibdev_dbg(&dev->ibdev, "Can't change port num\n");
 975                 return -EOPNOTSUPP;
 976         }
 977
 978         if ((qp_attr_mask & IB_QP_PKEY_INDEX) && qp_attr->pkey_index) {
 979                 ibdev_dbg(&dev->ibdev, "Can't change pkey index\n");
 980                 return -EOPNOTSUPP;
 981         }
 982
 983         return 0;
 984 }
 985
 986 int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 987                   int qp_attr_mask, struct ib_udata *udata)
 988 {
 989         struct efa_dev *dev = to_edev(ibqp->device);
 990         struct efa_com_modify_qp_params params = {};
 991         struct efa_qp *qp = to_eqp(ibqp);
 992         enum ib_qp_state cur_state;
 993         enum ib_qp_state new_state;
 994         int err;
 995
 996         if (qp_attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
 997                 return -EOPNOTSUPP;
 998
 999         if (udata->inlen &&
1000             !ib_is_udata_cleared(udata, 0, udata->inlen)) {
1001                 ibdev_dbg(&dev->ibdev,
1002                           "Incompatible ABI params, udata not cleared\n");
1003                 return -EINVAL;
1004         }
1005
1006         cur_state = qp_attr_mask & IB_QP_CUR_STATE ? qp_attr->cur_qp_state :
1007                                                      qp->state;
1008         new_state = qp_attr_mask & IB_QP_STATE ? qp_attr->qp_state : cur_state;
1009
1010         err = efa_modify_qp_validate(dev, qp, qp_attr, qp_attr_mask, cur_state,
1011                                      new_state);
1012         if (err)
1013                 return err;
1014
1015         params.qp_handle = qp->qp_handle;
1016
1017         if (qp_attr_mask & IB_QP_STATE) {
1018                 EFA_SET(&params.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_QP_STATE,
1019                         1);
1020                 EFA_SET(&params.modify_mask,
1021                         EFA_ADMIN_MODIFY_QP_CMD_CUR_QP_STATE, 1);
1022                 params.cur_qp_state = cur_state;
1023                 params.qp_state = new_state;
1024         }
1025
1026         if (qp_attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) {
1027                 EFA_SET(&params.modify_mask,
1028                         EFA_ADMIN_MODIFY_QP_CMD_SQ_DRAINED_ASYNC_NOTIFY, 1);
1029                 params.sq_drained_async_notify = qp_attr->en_sqd_async_notify;
1030         }
1031
1032         if (qp_attr_mask & IB_QP_QKEY) {
1033                 EFA_SET(&params.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_QKEY, 1);
1034                 params.qkey = qp_attr->qkey;
1035         }
1036
1037         if (qp_attr_mask & IB_QP_SQ_PSN) {
1038                 EFA_SET(&params.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_SQ_PSN, 1);
1039                 params.sq_psn = qp_attr->sq_psn;
1040         }
1041
1042         if (qp_attr_mask & IB_QP_RNR_RETRY) {
1043                 EFA_SET(&params.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_RNR_RETRY,
1044                         1);
1045                 params.rnr_retry = qp_attr->rnr_retry;
1046         }
1047
1048         err = efa_com_modify_qp(&dev->edev, &params);
1049         if (err)
1050                 return err;
1051
1052         qp->state = new_state;
1053
1054         return 0;
1055 }
1056
1057 static int efa_destroy_cq_idx(struct efa_dev *dev, int cq_idx)
1058 {
1059         struct efa_com_destroy_cq_params params = { .cq_idx = cq_idx };
1060
1061         return efa_com_destroy_cq(&dev->edev, &params);
1062 }
1063
1064 static void efa_cq_user_mmap_entries_remove(struct efa_cq *cq)
1065 {
1066         rdma_user_mmap_entry_remove(cq->db_mmap_entry);
1067         rdma_user_mmap_entry_remove(cq->mmap_entry);
1068 }
1069
1070 int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
1071 {
1072         struct efa_dev *dev = to_edev(ibcq->device);
1073         struct efa_cq *cq = to_ecq(ibcq);
1074
1075         ibdev_dbg(&dev->ibdev,
1076                   "Destroy cq[%d] virt[0x%p] freed: size[%lu], dma[%pad]\n",
1077                   cq->cq_idx, cq->cpu_addr, cq->size, &cq->dma_addr);
1078
1079         efa_destroy_cq_idx(dev, cq->cq_idx);
1080         efa_cq_user_mmap_entries_remove(cq);
1081         if (cq->eq) {
1082                 xa_erase(&dev->cqs_xa, cq->cq_idx);
1083                 synchronize_irq(cq->eq->irq.irqn);
1084         }
1085         efa_free_mapped(dev, cq->cpu_addr, cq->dma_addr, cq->size,
1086                         DMA_FROM_DEVICE);
1087         return 0;
1088 }
1089
1090 static struct efa_eq *efa_vec2eq(struct efa_dev *dev, int vec)
1091 {
1092         return &dev->eqs[vec];
1093 }
1094
1095 static int cq_mmap_entries_setup(struct efa_dev *dev, struct efa_cq *cq,
1096                                  struct efa_ibv_create_cq_resp *resp,
1097                                  bool db_valid)
1098 {
1099         resp->q_mmap_size = cq->size;
1100         cq->mmap_entry = efa_user_mmap_entry_insert(&cq->ucontext->ibucontext,
1101                                                     virt_to_phys(cq->cpu_addr),
1102                                                     cq->size, EFA_MMAP_DMA_PAGE,
1103                                                     &resp->q_mmap_key);
1104         if (!cq->mmap_entry)
1105                 return -ENOMEM;
1106
1107         if (db_valid) {
1108                 cq->db_mmap_entry =
1109                         efa_user_mmap_entry_insert(&cq->ucontext->ibucontext,
1110                                                    dev->db_bar_addr + resp->db_off,
1111                                                    PAGE_SIZE, EFA_MMAP_IO_NC,
1112                                                    &resp->db_mmap_key);
1113                 if (!cq->db_mmap_entry) {
1114                         rdma_user_mmap_entry_remove(cq->mmap_entry);
1115                         return -ENOMEM;
1116                 }
1117
1118                 resp->db_off &= ~PAGE_MASK;
1119                 resp->comp_mask |= EFA_CREATE_CQ_RESP_DB_OFF;
1120         }
1121
1122         return 0;
1123 }
1124
1125 int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
1126                   struct uverbs_attr_bundle *attrs)
1127 {
1128         struct ib_udata *udata = &attrs->driver_udata;
1129         struct efa_ucontext *ucontext = rdma_udata_to_drv_context(
1130                 udata, struct efa_ucontext, ibucontext);
1131         struct efa_com_create_cq_params params = {};
1132         struct efa_ibv_create_cq_resp resp = {};
1133         struct efa_com_create_cq_result result;
1134         struct ib_device *ibdev = ibcq->device;
1135         struct efa_dev *dev = to_edev(ibdev);
1136         struct efa_ibv_create_cq cmd = {};
1137         struct efa_cq *cq = to_ecq(ibcq);
1138         int entries = attr->cqe;
1139         bool set_src_addr;
1140         int err;
1141
1142         ibdev_dbg(ibdev, "create_cq entries %d\n", entries);
1143
1144         if (attr->flags)
1145                 return -EOPNOTSUPP;
1146
1147         if (entries < 1 || entries > dev->dev_attr.max_cq_depth) {
1148                 ibdev_dbg(ibdev,
1149                           "cq: requested entries[%u] non-positive or greater than max[%u]\n",
1150                           entries, dev->dev_attr.max_cq_depth);
1151                 err = -EINVAL;
1152                 goto err_out;
1153         }
1154
1155         if (offsetofend(typeof(cmd), num_sub_cqs) > udata->inlen) {
1156                 ibdev_dbg(ibdev,
1157                           "Incompatible ABI params, no input udata\n");
1158                 err = -EINVAL;
1159                 goto err_out;
1160         }
1161
1162         if (udata->inlen > sizeof(cmd) &&
1163             !ib_is_udata_cleared(udata, sizeof(cmd),
1164                                  udata->inlen - sizeof(cmd))) {
1165                 ibdev_dbg(ibdev,
1166                           "Incompatible ABI params, unknown fields in udata\n");
1167                 err = -EINVAL;
1168                 goto err_out;
1169         }
1170
1171         err = ib_copy_from_udata(&cmd, udata,
1172                                  min(sizeof(cmd), udata->inlen));
1173         if (err) {
1174                 ibdev_dbg(ibdev, "Cannot copy udata for create_cq\n");
1175                 goto err_out;
1176         }
1177
1178         if (cmd.comp_mask || !is_reserved_cleared(cmd.reserved_58)) {
1179                 ibdev_dbg(ibdev,
1180                           "Incompatible ABI params, unknown fields in udata\n");
1181                 err = -EINVAL;
1182                 goto err_out;
1183         }
1184
1185         set_src_addr = !!(cmd.flags & EFA_CREATE_CQ_WITH_SGID);
1186         if ((cmd.cq_entry_size != sizeof(struct efa_io_rx_cdesc_ex)) &&
1187             (set_src_addr ||
1188              cmd.cq_entry_size != sizeof(struct efa_io_rx_cdesc))) {
1189                 ibdev_dbg(ibdev,
1190                           "Invalid entry size [%u]\n", cmd.cq_entry_size);
1191                 err = -EINVAL;
1192                 goto err_out;
1193         }
1194
1195         if (cmd.num_sub_cqs != dev->dev_attr.sub_cqs_per_cq) {
1196                 ibdev_dbg(ibdev,
1197                           "Invalid number of sub cqs[%u] expected[%u]\n",
1198                           cmd.num_sub_cqs, dev->dev_attr.sub_cqs_per_cq);
1199                 err = -EINVAL;
1200                 goto err_out;
1201         }
1202
1203         cq->ucontext = ucontext;
1204         cq->size = PAGE_ALIGN(cmd.cq_entry_size * entries * cmd.num_sub_cqs);
1205         cq->cpu_addr = efa_zalloc_mapped(dev, &cq->dma_addr, cq->size,
1206                                          DMA_FROM_DEVICE);
1207         if (!cq->cpu_addr) {
1208                 err = -ENOMEM;
1209                 goto err_out;
1210         }
1211
1212         params.uarn = cq->ucontext->uarn;
1213         params.sub_cq_depth = entries;
1214         params.dma_addr = cq->dma_addr;
1215         params.entry_size_in_bytes = cmd.cq_entry_size;
1216         params.num_sub_cqs = cmd.num_sub_cqs;
1217         params.set_src_addr = set_src_addr;
1218         if (cmd.flags & EFA_CREATE_CQ_WITH_COMPLETION_CHANNEL) {
1219                 cq->eq = efa_vec2eq(dev, attr->comp_vector);
1220                 params.eqn = cq->eq->eeq.eqn;
1221                 params.interrupt_mode_enabled = true;
1222         }
1223
1224         err = efa_com_create_cq(&dev->edev, &params, &result);
1225         if (err)
1226                 goto err_free_mapped;
1227
1228         resp.db_off = result.db_off;
1229         resp.cq_idx = result.cq_idx;
1230         cq->cq_idx = result.cq_idx;
1231         cq->ibcq.cqe = result.actual_depth;
1232         WARN_ON_ONCE(entries != result.actual_depth);
1233
1234         err = cq_mmap_entries_setup(dev, cq, &resp, result.db_valid);
1235         if (err) {
1236                 ibdev_dbg(ibdev, "Could not setup cq[%u] mmap entries\n",
1237                           cq->cq_idx);
1238                 goto err_destroy_cq;
1239         }
1240
1241         if (cq->eq) {
1242                 err = xa_err(xa_store(&dev->cqs_xa, cq->cq_idx, cq, GFP_KERNEL));
1243                 if (err) {
1244                         ibdev_dbg(ibdev, "Failed to store cq[%u] in xarray\n",
1245                                   cq->cq_idx);
1246                         goto err_remove_mmap;
1247                 }
1248         }
1249
1250         if (udata->outlen) {
1251                 err = ib_copy_to_udata(udata, &resp,
1252                                        min(sizeof(resp), udata->outlen));
1253                 if (err) {
1254                         ibdev_dbg(ibdev,
1255                                   "Failed to copy udata for create_cq\n");
1256                         goto err_xa_erase;
1257                 }
1258         }
1259
1260         ibdev_dbg(ibdev, "Created cq[%d], cq depth[%u]. dma[%pad] virt[0x%p]\n",
1261                   cq->cq_idx, result.actual_depth, &cq->dma_addr, cq->cpu_addr);
1262
1263         return 0;
1264
1265 err_xa_erase:
1266         if (cq->eq)
1267                 xa_erase(&dev->cqs_xa, cq->cq_idx);
1268 err_remove_mmap:
1269         efa_cq_user_mmap_entries_remove(cq);
1270 err_destroy_cq:
1271         efa_destroy_cq_idx(dev, cq->cq_idx);
1272 err_free_mapped:
1273         efa_free_mapped(dev, cq->cpu_addr, cq->dma_addr, cq->size,
1274                         DMA_FROM_DEVICE);
1275
1276 err_out:
1277         atomic64_inc(&dev->stats.create_cq_err);
1278         return err;
1279 }
1280
1281 static int umem_to_page_list(struct efa_dev *dev,
1282                              struct ib_umem *umem,
1283                              u64 *page_list,
1284                              u32 hp_cnt,
1285                              u8 hp_shift)
1286 {
1287         u32 pages_in_hp = BIT(hp_shift - PAGE_SHIFT);
1288         struct ib_block_iter biter;
1289         unsigned int hp_idx = 0;
1290
1291         ibdev_dbg(&dev->ibdev, "hp_cnt[%u], pages_in_hp[%u]\n",
1292                   hp_cnt, pages_in_hp);
1293
1294         rdma_umem_for_each_dma_block(umem, &biter, BIT(hp_shift))
1295                 page_list[hp_idx++] = rdma_block_iter_dma_address(&biter);
1296
1297         return 0;
1298 }
1299
1300 static struct scatterlist *efa_vmalloc_buf_to_sg(u64 *buf, int page_cnt)
1301 {
1302         struct scatterlist *sglist;
1303         struct page *pg;
1304         int i;
1305
1306         sglist = kmalloc_array(page_cnt, sizeof(*sglist), GFP_KERNEL);
1307         if (!sglist)
1308                 return NULL;
1309         sg_init_table(sglist, page_cnt);
1310         for (i = 0; i < page_cnt; i++) {
1311                 pg = vmalloc_to_page(buf);
1312                 if (!pg)
1313                         goto err;
1314                 sg_set_page(&sglist[i], pg, PAGE_SIZE, 0);
1315                 buf += PAGE_SIZE / sizeof(*buf);
1316         }
1317         return sglist;
1318
1319 err:
1320         kfree(sglist);
1321         return NULL;
1322 }
1323
1324 /*
1325  * create a chunk list of physical pages dma addresses from the supplied
1326  * scatter gather list
1327  */
1328 static int pbl_chunk_list_create(struct efa_dev *dev, struct pbl_context *pbl)
1329 {
1330         struct pbl_chunk_list *chunk_list = &pbl->phys.indirect.chunk_list;
1331         int page_cnt = pbl->phys.indirect.pbl_buf_size_in_pages;
1332         struct scatterlist *pages_sgl = pbl->phys.indirect.sgl;
1333         unsigned int chunk_list_size, chunk_idx, payload_idx;
1334         int sg_dma_cnt = pbl->phys.indirect.sg_dma_cnt;
1335         struct efa_com_ctrl_buff_info *ctrl_buf;
1336         u64 *cur_chunk_buf, *prev_chunk_buf;
1337         struct ib_block_iter biter;
1338         dma_addr_t dma_addr;
1339         int i;
1340
1341         /* allocate a chunk list that consists of 4KB chunks */
1342         chunk_list_size = DIV_ROUND_UP(page_cnt, EFA_PTRS_PER_CHUNK);
1343
1344         chunk_list->size = chunk_list_size;
1345         chunk_list->chunks = kcalloc(chunk_list_size,
1346                                      sizeof(*chunk_list->chunks),
1347                                      GFP_KERNEL);
1348         if (!chunk_list->chunks)
1349                 return -ENOMEM;
1350
1351         ibdev_dbg(&dev->ibdev,
1352                   "chunk_list_size[%u] - pages[%u]\n", chunk_list_size,
1353                   page_cnt);
1354
1355         /* allocate chunk buffers: */
1356         for (i = 0; i < chunk_list_size; i++) {
1357                 chunk_list->chunks[i].buf = kzalloc(EFA_CHUNK_SIZE, GFP_KERNEL);
1358                 if (!chunk_list->chunks[i].buf)
1359                         goto chunk_list_dealloc;
1360
1361                 chunk_list->chunks[i].length = EFA_CHUNK_USED_SIZE;
1362         }
1363         chunk_list->chunks[chunk_list_size - 1].length =
1364                 ((page_cnt % EFA_PTRS_PER_CHUNK) * EFA_CHUNK_PAYLOAD_PTR_SIZE) +
1365                         EFA_CHUNK_PTR_SIZE;
1366
1367         /* fill the dma addresses of sg list pages to chunks: */
1368         chunk_idx = 0;
1369         payload_idx = 0;
1370         cur_chunk_buf = chunk_list->chunks[0].buf;
1371         rdma_for_each_block(pages_sgl, &biter, sg_dma_cnt,
1372                             EFA_CHUNK_PAYLOAD_SIZE) {
1373                 cur_chunk_buf[payload_idx++] =
1374                         rdma_block_iter_dma_address(&biter);
1375
1376                 if (payload_idx == EFA_PTRS_PER_CHUNK) {
1377                         chunk_idx++;
1378                         cur_chunk_buf = chunk_list->chunks[chunk_idx].buf;
1379                         payload_idx = 0;
1380                 }
1381         }
1382
1383         /* map chunks to dma and fill chunks next ptrs */
1384         for (i = chunk_list_size - 1; i >= 0; i--) {
1385                 dma_addr = dma_map_single(&dev->pdev->dev,
1386                                           chunk_list->chunks[i].buf,
1387                                           chunk_list->chunks[i].length,
1388                                           DMA_TO_DEVICE);
1389                 if (dma_mapping_error(&dev->pdev->dev, dma_addr)) {
1390                         ibdev_err(&dev->ibdev,
1391                                   "chunk[%u] dma_map_failed\n", i);
1392                         goto chunk_list_unmap;
1393                 }
1394
1395                 chunk_list->chunks[i].dma_addr = dma_addr;
1396                 ibdev_dbg(&dev->ibdev,
1397                           "chunk[%u] mapped at [%pad]\n", i, &dma_addr);
1398
1399                 if (!i)
1400                         break;
1401
1402                 prev_chunk_buf = chunk_list->chunks[i - 1].buf;
1403
1404                 ctrl_buf = (struct efa_com_ctrl_buff_info *)
1405                                 &prev_chunk_buf[EFA_PTRS_PER_CHUNK];
1406                 ctrl_buf->length = chunk_list->chunks[i].length;
1407
1408                 efa_com_set_dma_addr(dma_addr,
1409                                      &ctrl_buf->address.mem_addr_high,
1410                                      &ctrl_buf->address.mem_addr_low);
1411         }
1412
1413         return 0;
1414
1415 chunk_list_unmap:
1416         for (; i < chunk_list_size; i++) {
1417                 dma_unmap_single(&dev->pdev->dev, chunk_list->chunks[i].dma_addr,
1418                                  chunk_list->chunks[i].length, DMA_TO_DEVICE);
1419         }
1420 chunk_list_dealloc:
1421         for (i = 0; i < chunk_list_size; i++)
1422                 kfree(chunk_list->chunks[i].buf);
1423
1424         kfree(chunk_list->chunks);
1425         return -ENOMEM;
1426 }
1427
1428 static void pbl_chunk_list_destroy(struct efa_dev *dev, struct pbl_context *pbl)
1429 {
1430         struct pbl_chunk_list *chunk_list = &pbl->phys.indirect.chunk_list;
1431         int i;
1432
1433         for (i = 0; i < chunk_list->size; i++) {
1434                 dma_unmap_single(&dev->pdev->dev, chunk_list->chunks[i].dma_addr,
1435                                  chunk_list->chunks[i].length, DMA_TO_DEVICE);
1436                 kfree(chunk_list->chunks[i].buf);
1437         }
1438
1439         kfree(chunk_list->chunks);
1440 }
1441
1442 /* initialize pbl continuous mode: map pbl buffer to a dma address. */
1443 static int pbl_continuous_initialize(struct efa_dev *dev,
1444                                      struct pbl_context *pbl)
1445 {
1446         dma_addr_t dma_addr;
1447
1448         dma_addr = dma_map_single(&dev->pdev->dev, pbl->pbl_buf,
1449                                   pbl->pbl_buf_size_in_bytes, DMA_TO_DEVICE);
1450         if (dma_mapping_error(&dev->pdev->dev, dma_addr)) {
1451                 ibdev_err(&dev->ibdev, "Unable to map pbl to DMA address\n");
1452                 return -ENOMEM;
1453         }
1454
1455         pbl->phys.continuous.dma_addr = dma_addr;
1456         ibdev_dbg(&dev->ibdev,
1457                   "pbl continuous - dma_addr = %pad, size[%u]\n",
1458                   &dma_addr, pbl->pbl_buf_size_in_bytes);
1459
1460         return 0;
1461 }
1462
1463 /*
1464  * initialize pbl indirect mode:
1465  * create a chunk list out of the dma addresses of the physical pages of
1466  * pbl buffer.
1467  */
1468 static int pbl_indirect_initialize(struct efa_dev *dev, struct pbl_context *pbl)
1469 {
1470         u32 size_in_pages = DIV_ROUND_UP(pbl->pbl_buf_size_in_bytes, EFA_CHUNK_PAYLOAD_SIZE);
1471         struct scatterlist *sgl;
1472         int sg_dma_cnt, err;
1473
1474         BUILD_BUG_ON(EFA_CHUNK_PAYLOAD_SIZE > PAGE_SIZE);
1475         sgl = efa_vmalloc_buf_to_sg(pbl->pbl_buf, size_in_pages);
1476         if (!sgl)
1477                 return -ENOMEM;
1478
1479         sg_dma_cnt = dma_map_sg(&dev->pdev->dev, sgl, size_in_pages, DMA_TO_DEVICE);
1480         if (!sg_dma_cnt) {
1481                 err = -EINVAL;
1482                 goto err_map;
1483         }
1484
1485         pbl->phys.indirect.pbl_buf_size_in_pages = size_in_pages;
1486         pbl->phys.indirect.sgl = sgl;
1487         pbl->phys.indirect.sg_dma_cnt = sg_dma_cnt;
1488         err = pbl_chunk_list_create(dev, pbl);
1489         if (err) {
1490                 ibdev_dbg(&dev->ibdev,
1491                           "chunk_list creation failed[%d]\n", err);
1492                 goto err_chunk;
1493         }
1494
1495         ibdev_dbg(&dev->ibdev,
1496                   "pbl indirect - size[%u], chunks[%u]\n",
1497                   pbl->pbl_buf_size_in_bytes,
1498                   pbl->phys.indirect.chunk_list.size);
1499
1500         return 0;
1501
1502 err_chunk:
1503         dma_unmap_sg(&dev->pdev->dev, sgl, size_in_pages, DMA_TO_DEVICE);
1504 err_map:
1505         kfree(sgl);
1506         return err;
1507 }
1508
1509 static void pbl_indirect_terminate(struct efa_dev *dev, struct pbl_context *pbl)
1510 {
1511         pbl_chunk_list_destroy(dev, pbl);
1512         dma_unmap_sg(&dev->pdev->dev, pbl->phys.indirect.sgl,
1513                      pbl->phys.indirect.pbl_buf_size_in_pages, DMA_TO_DEVICE);
1514         kfree(pbl->phys.indirect.sgl);
1515 }
1516
1517 /* create a page buffer list from a mapped user memory region */
1518 static int pbl_create(struct efa_dev *dev,
1519                       struct pbl_context *pbl,
1520                       struct ib_umem *umem,
1521                       int hp_cnt,
1522                       u8 hp_shift)
1523 {
1524         int err;
1525
1526         pbl->pbl_buf_size_in_bytes = hp_cnt * EFA_CHUNK_PAYLOAD_PTR_SIZE;
1527         pbl->pbl_buf = kvzalloc(pbl->pbl_buf_size_in_bytes, GFP_KERNEL);
1528         if (!pbl->pbl_buf)
1529                 return -ENOMEM;
1530
1531         if (is_vmalloc_addr(pbl->pbl_buf)) {
1532                 pbl->physically_continuous = 0;
1533                 err = umem_to_page_list(dev, umem, pbl->pbl_buf, hp_cnt,
1534                                         hp_shift);
1535                 if (err)
1536                         goto err_free;
1537
1538                 err = pbl_indirect_initialize(dev, pbl);
1539                 if (err)
1540                         goto err_free;
1541         } else {
1542                 pbl->physically_continuous = 1;
1543                 err = umem_to_page_list(dev, umem, pbl->pbl_buf, hp_cnt,
1544                                         hp_shift);
1545                 if (err)
1546                         goto err_free;
1547
1548                 err = pbl_continuous_initialize(dev, pbl);
1549                 if (err)
1550                         goto err_free;
1551         }
1552
1553         ibdev_dbg(&dev->ibdev,
1554                   "user_pbl_created: user_pages[%u], continuous[%u]\n",
1555                   hp_cnt, pbl->physically_continuous);
1556
1557         return 0;
1558
1559 err_free:
1560         kvfree(pbl->pbl_buf);
1561         return err;
1562 }
1563
1564 static void pbl_destroy(struct efa_dev *dev, struct pbl_context *pbl)
1565 {
1566         if (pbl->physically_continuous)
1567                 dma_unmap_single(&dev->pdev->dev, pbl->phys.continuous.dma_addr,
1568                                  pbl->pbl_buf_size_in_bytes, DMA_TO_DEVICE);
1569         else
1570                 pbl_indirect_terminate(dev, pbl);
1571
1572         kvfree(pbl->pbl_buf);
1573 }
1574
1575 static int efa_create_inline_pbl(struct efa_dev *dev, struct efa_mr *mr,
1576                                  struct efa_com_reg_mr_params *params)
1577 {
1578         int err;
1579
1580         params->inline_pbl = 1;
1581         err = umem_to_page_list(dev, mr->umem, params->pbl.inline_pbl_array,
1582                                 params->page_num, params->page_shift);
1583         if (err)
1584                 return err;
1585
1586         ibdev_dbg(&dev->ibdev,
1587                   "inline_pbl_array - pages[%u]\n", params->page_num);
1588
1589         return 0;
1590 }
1591
1592 static int efa_create_pbl(struct efa_dev *dev,
1593                           struct pbl_context *pbl,
1594                           struct efa_mr *mr,
1595                           struct efa_com_reg_mr_params *params)
1596 {
1597         int err;
1598
1599         err = pbl_create(dev, pbl, mr->umem, params->page_num,
1600                          params->page_shift);
1601         if (err) {
1602                 ibdev_dbg(&dev->ibdev, "Failed to create pbl[%d]\n", err);
1603                 return err;
1604         }
1605
1606         params->inline_pbl = 0;
1607         params->indirect = !pbl->physically_continuous;
1608         if (pbl->physically_continuous) {
1609                 params->pbl.pbl.length = pbl->pbl_buf_size_in_bytes;
1610
1611                 efa_com_set_dma_addr(pbl->phys.continuous.dma_addr,
1612                                      &params->pbl.pbl.address.mem_addr_high,
1613                                      &params->pbl.pbl.address.mem_addr_low);
1614         } else {
1615                 params->pbl.pbl.length =
1616                         pbl->phys.indirect.chunk_list.chunks[0].length;
1617
1618                 efa_com_set_dma_addr(pbl->phys.indirect.chunk_list.chunks[0].dma_addr,
1619                                      &params->pbl.pbl.address.mem_addr_high,
1620                                      &params->pbl.pbl.address.mem_addr_low);
1621         }
1622
1623         return 0;
1624 }
1625
1626 static struct efa_mr *efa_alloc_mr(struct ib_pd *ibpd, int access_flags,
1627                                    struct ib_udata *udata)
1628 {
1629         struct efa_dev *dev = to_edev(ibpd->device);
1630         int supp_access_flags;
1631         struct efa_mr *mr;
1632
1633         if (udata && udata->inlen &&
1634             !ib_is_udata_cleared(udata, 0, sizeof(udata->inlen))) {
1635                 ibdev_dbg(&dev->ibdev,
1636                           "Incompatible ABI params, udata not cleared\n");
1637                 return ERR_PTR(-EINVAL);
1638         }
1639
1640         supp_access_flags =
1641                 IB_ACCESS_LOCAL_WRITE |
1642                 (EFA_DEV_CAP(dev, RDMA_READ) ? IB_ACCESS_REMOTE_READ : 0) |
1643                 (EFA_DEV_CAP(dev, RDMA_WRITE) ? IB_ACCESS_REMOTE_WRITE : 0);
1644
1645         access_flags &= ~IB_ACCESS_OPTIONAL;
1646         if (access_flags & ~supp_access_flags) {
1647                 ibdev_dbg(&dev->ibdev,
1648                           "Unsupported access flags[%#x], supported[%#x]\n",
1649                           access_flags, supp_access_flags);
1650                 return ERR_PTR(-EOPNOTSUPP);
1651         }
1652
1653         mr = kzalloc(sizeof(*mr), GFP_KERNEL);
1654         if (!mr)
1655                 return ERR_PTR(-ENOMEM);
1656
1657         return mr;
1658 }
1659
1660 static int efa_register_mr(struct ib_pd *ibpd, struct efa_mr *mr, u64 start,
1661                            u64 length, u64 virt_addr, int access_flags)
1662 {
1663         struct efa_dev *dev = to_edev(ibpd->device);
1664         struct efa_com_reg_mr_params params = {};
1665         struct efa_com_reg_mr_result result = {};
1666         struct pbl_context pbl;
1667         unsigned int pg_sz;
1668         int inline_size;
1669         int err;
1670
1671         params.pd = to_epd(ibpd)->pdn;
1672         params.iova = virt_addr;
1673         params.mr_length_in_bytes = length;
1674         params.permissions = access_flags;
1675
1676         pg_sz = ib_umem_find_best_pgsz(mr->umem,
1677                                        dev->dev_attr.page_size_cap,
1678                                        virt_addr);
1679         if (!pg_sz) {
1680                 ibdev_dbg(&dev->ibdev, "Failed to find a suitable page size in page_size_cap %#llx\n",
1681                           dev->dev_attr.page_size_cap);
1682                 return -EOPNOTSUPP;
1683         }
1684
1685         params.page_shift = order_base_2(pg_sz);
1686         params.page_num = ib_umem_num_dma_blocks(mr->umem, pg_sz);
1687
1688         ibdev_dbg(&dev->ibdev,
1689                   "start %#llx length %#llx params.page_shift %u params.page_num %u\n",
1690                   start, length, params.page_shift, params.page_num);
1691
1692         inline_size = ARRAY_SIZE(params.pbl.inline_pbl_array);
1693         if (params.page_num <= inline_size) {
1694                 err = efa_create_inline_pbl(dev, mr, &params);
1695                 if (err)
1696                         return err;
1697
1698                 err = efa_com_register_mr(&dev->edev, &params, &result);
1699                 if (err)
1700                         return err;
1701         } else {
1702                 err = efa_create_pbl(dev, &pbl, mr, &params);
1703                 if (err)
1704                         return err;
1705
1706                 err = efa_com_register_mr(&dev->edev, &params, &result);
1707                 pbl_destroy(dev, &pbl);
1708
1709                 if (err)
1710                         return err;
1711         }
1712
1713         mr->ibmr.lkey = result.l_key;
1714         mr->ibmr.rkey = result.r_key;
1715         mr->ibmr.length = length;
1716         mr->ic_info.recv_ic_id = result.ic_info.recv_ic_id;
1717         mr->ic_info.rdma_read_ic_id = result.ic_info.rdma_read_ic_id;
1718         mr->ic_info.rdma_recv_ic_id = result.ic_info.rdma_recv_ic_id;
1719         mr->ic_info.recv_ic_id_valid = result.ic_info.recv_ic_id_valid;
1720         mr->ic_info.rdma_read_ic_id_valid = result.ic_info.rdma_read_ic_id_valid;
1721         mr->ic_info.rdma_recv_ic_id_valid = result.ic_info.rdma_recv_ic_id_valid;
1722         ibdev_dbg(&dev->ibdev, "Registered mr[%d]\n", mr->ibmr.lkey);
1723
1724         return 0;
1725 }
1726
1727 struct ib_mr *efa_reg_user_mr_dmabuf(struct ib_pd *ibpd, u64 start,
1728                                      u64 length, u64 virt_addr,
1729                                      int fd, int access_flags,
1730                                      struct uverbs_attr_bundle *attrs)
1731 {
1732         struct efa_dev *dev = to_edev(ibpd->device);
1733         struct ib_umem_dmabuf *umem_dmabuf;
1734         struct efa_mr *mr;
1735         int err;
1736
1737         mr = efa_alloc_mr(ibpd, access_flags, &attrs->driver_udata);
1738         if (IS_ERR(mr)) {
1739                 err = PTR_ERR(mr);
1740                 goto err_out;
1741         }
1742
1743         umem_dmabuf = ib_umem_dmabuf_get_pinned(ibpd->device, start, length, fd,
1744                                                 access_flags);
1745         if (IS_ERR(umem_dmabuf)) {
1746                 err = PTR_ERR(umem_dmabuf);
1747                 ibdev_dbg(&dev->ibdev, "Failed to get dmabuf umem[%d]\n", err);
1748                 goto err_free;
1749         }
1750
1751         mr->umem = &umem_dmabuf->umem;
1752         err = efa_register_mr(ibpd, mr, start, length, virt_addr, access_flags);
1753         if (err)
1754                 goto err_release;
1755
1756         return &mr->ibmr;
1757
1758 err_release:
1759         ib_umem_release(mr->umem);
1760 err_free:
1761         kfree(mr);
1762 err_out:
1763         atomic64_inc(&dev->stats.reg_mr_err);
1764         return ERR_PTR(err);
1765 }
1766
1767 struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length,
1768                          u64 virt_addr, int access_flags,
1769                          struct ib_udata *udata)
1770 {
1771         struct efa_dev *dev = to_edev(ibpd->device);
1772         struct efa_mr *mr;
1773         int err;
1774
1775         mr = efa_alloc_mr(ibpd, access_flags, udata);
1776         if (IS_ERR(mr)) {
1777                 err = PTR_ERR(mr);
1778                 goto err_out;
1779         }
1780
1781         mr->umem = ib_umem_get(ibpd->device, start, length, access_flags);
1782         if (IS_ERR(mr->umem)) {
1783                 err = PTR_ERR(mr->umem);
1784                 ibdev_dbg(&dev->ibdev,
1785                           "Failed to pin and map user space memory[%d]\n", err);
1786                 goto err_free;
1787         }
1788
1789         err = efa_register_mr(ibpd, mr, start, length, virt_addr, access_flags);
1790         if (err)
1791                 goto err_release;
1792
1793         return &mr->ibmr;
1794
1795 err_release:
1796         ib_umem_release(mr->umem);
1797 err_free:
1798         kfree(mr);
1799 err_out:
1800         atomic64_inc(&dev->stats.reg_mr_err);
1801         return ERR_PTR(err);
1802 }
1803
1804 static int UVERBS_HANDLER(EFA_IB_METHOD_MR_QUERY)(struct uverbs_attr_bundle *attrs)
1805 {
1806         struct ib_mr *ibmr = uverbs_attr_get_obj(attrs, EFA_IB_ATTR_QUERY_MR_HANDLE);
1807         struct efa_mr *mr = to_emr(ibmr);
1808         u16 ic_id_validity = 0;
1809         int ret;
1810
1811         ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID,
1812                              &mr->ic_info.recv_ic_id, sizeof(mr->ic_info.recv_ic_id));
1813         if (ret)
1814                 return ret;
1815
1816         ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID,
1817                              &mr->ic_info.rdma_read_ic_id, sizeof(mr->ic_info.rdma_read_ic_id));
1818         if (ret)
1819                 return ret;
1820
1821         ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID,
1822                              &mr->ic_info.rdma_recv_ic_id, sizeof(mr->ic_info.rdma_recv_ic_id));
1823         if (ret)
1824                 return ret;
1825
1826         if (mr->ic_info.recv_ic_id_valid)
1827                 ic_id_validity |= EFA_QUERY_MR_VALIDITY_RECV_IC_ID;
1828         if (mr->ic_info.rdma_read_ic_id_valid)
1829                 ic_id_validity |= EFA_QUERY_MR_VALIDITY_RDMA_READ_IC_ID;
1830         if (mr->ic_info.rdma_recv_ic_id_valid)
1831                 ic_id_validity |= EFA_QUERY_MR_VALIDITY_RDMA_RECV_IC_ID;
1832
1833         return uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY,
1834                               &ic_id_validity, sizeof(ic_id_validity));
1835 }
1836
1837 int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
1838 {
1839         struct efa_dev *dev = to_edev(ibmr->device);
1840         struct efa_com_dereg_mr_params params;
1841         struct efa_mr *mr = to_emr(ibmr);
1842         int err;
1843
1844         ibdev_dbg(&dev->ibdev, "Deregister mr[%d]\n", ibmr->lkey);
1845
1846         params.l_key = mr->ibmr.lkey;
1847         err = efa_com_dereg_mr(&dev->edev, &params);
1848         if (err)
1849                 return err;
1850
1851         ib_umem_release(mr->umem);
1852         kfree(mr);
1853
1854         return 0;
1855 }
1856
1857 int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num,
1858                            struct ib_port_immutable *immutable)
1859 {
1860         struct ib_port_attr attr;
1861         int err;
1862
1863         err = ib_query_port(ibdev, port_num, &attr);
1864         if (err) {
1865                 ibdev_dbg(ibdev, "Couldn't query port err[%d]\n", err);
1866                 return err;
1867         }
1868
1869         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1870         immutable->gid_tbl_len = attr.gid_tbl_len;
1871
1872         return 0;
1873 }
1874
1875 static int efa_dealloc_uar(struct efa_dev *dev, u16 uarn)
1876 {
1877         struct efa_com_dealloc_uar_params params = {
1878                 .uarn = uarn,
1879         };
1880
1881         return efa_com_dealloc_uar(&dev->edev, &params);
1882 }
1883
1884 #define EFA_CHECK_USER_COMP(_dev, _comp_mask, _attr, _mask, _attr_str) \
1885         (_attr_str = (!(_dev)->dev_attr._attr || ((_comp_mask) & (_mask))) ? \
1886                      NULL : #_attr)
1887
1888 static int efa_user_comp_handshake(const struct ib_ucontext *ibucontext,
1889                                    const struct efa_ibv_alloc_ucontext_cmd *cmd)
1890 {
1891         struct efa_dev *dev = to_edev(ibucontext->device);
1892         char *attr_str;
1893
1894         if (EFA_CHECK_USER_COMP(dev, cmd->comp_mask, max_tx_batch,
1895                                 EFA_ALLOC_UCONTEXT_CMD_COMP_TX_BATCH, attr_str))
1896                 goto err;
1897
1898         if (EFA_CHECK_USER_COMP(dev, cmd->comp_mask, min_sq_depth,
1899                                 EFA_ALLOC_UCONTEXT_CMD_COMP_MIN_SQ_WR,
1900                                 attr_str))
1901                 goto err;
1902
1903         return 0;
1904
1905 err:
1906         ibdev_dbg(&dev->ibdev, "Userspace handshake failed for %s attribute\n",
1907                   attr_str);
1908         return -EOPNOTSUPP;
1909 }
1910
1911 int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata)
1912 {
1913         struct efa_ucontext *ucontext = to_eucontext(ibucontext);
1914         struct efa_dev *dev = to_edev(ibucontext->device);
1915         struct efa_ibv_alloc_ucontext_resp resp = {};
1916         struct efa_ibv_alloc_ucontext_cmd cmd = {};
1917         struct efa_com_alloc_uar_result result;
1918         int err;
1919
1920         /*
1921          * it's fine if the driver does not know all request fields,
1922          * we will ack input fields in our response.
1923          */
1924
1925         err = ib_copy_from_udata(&cmd, udata,
1926                                  min(sizeof(cmd), udata->inlen));
1927         if (err) {
1928                 ibdev_dbg(&dev->ibdev,
1929                           "Cannot copy udata for alloc_ucontext\n");
1930                 goto err_out;
1931         }
1932
1933         err = efa_user_comp_handshake(ibucontext, &cmd);
1934         if (err)
1935                 goto err_out;
1936
1937         err = efa_com_alloc_uar(&dev->edev, &result);
1938         if (err)
1939                 goto err_out;
1940
1941         ucontext->uarn = result.uarn;
1942
1943         resp.cmds_supp_udata_mask |= EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE;
1944         resp.cmds_supp_udata_mask |= EFA_USER_CMDS_SUPP_UDATA_CREATE_AH;
1945         resp.sub_cqs_per_cq = dev->dev_attr.sub_cqs_per_cq;
1946         resp.inline_buf_size = dev->dev_attr.inline_buf_size;
1947         resp.max_llq_size = dev->dev_attr.max_llq_size;
1948         resp.max_tx_batch = dev->dev_attr.max_tx_batch;
1949         resp.min_sq_wr = dev->dev_attr.min_sq_depth;
1950
1951         err = ib_copy_to_udata(udata, &resp,
1952                                min(sizeof(resp), udata->outlen));
1953         if (err)
1954                 goto err_dealloc_uar;
1955
1956         return 0;
1957
1958 err_dealloc_uar:
1959         efa_dealloc_uar(dev, result.uarn);
1960 err_out:
1961         atomic64_inc(&dev->stats.alloc_ucontext_err);
1962         return err;
1963 }
1964
1965 void efa_dealloc_ucontext(struct ib_ucontext *ibucontext)
1966 {
1967         struct efa_ucontext *ucontext = to_eucontext(ibucontext);
1968         struct efa_dev *dev = to_edev(ibucontext->device);
1969
1970         efa_dealloc_uar(dev, ucontext->uarn);
1971 }
1972
1973 void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry)
1974 {
1975         struct efa_user_mmap_entry *entry = to_emmap(rdma_entry);
1976
1977         kfree(entry);
1978 }
1979
1980 static int __efa_mmap(struct efa_dev *dev, struct efa_ucontext *ucontext,
1981                       struct vm_area_struct *vma)
1982 {
1983         struct rdma_user_mmap_entry *rdma_entry;
1984         struct efa_user_mmap_entry *entry;
1985         unsigned long va;
1986         int err = 0;
1987         u64 pfn;
1988
1989         rdma_entry = rdma_user_mmap_entry_get(&ucontext->ibucontext, vma);
1990         if (!rdma_entry) {
1991                 ibdev_dbg(&dev->ibdev,
1992                           "pgoff[%#lx] does not have valid entry\n",
1993                           vma->vm_pgoff);
1994                 atomic64_inc(&dev->stats.mmap_err);
1995                 return -EINVAL;
1996         }
1997         entry = to_emmap(rdma_entry);
1998
1999         ibdev_dbg(&dev->ibdev,
2000                   "Mapping address[%#llx], length[%#zx], mmap_flag[%d]\n",
2001                   entry->address, rdma_entry->npages * PAGE_SIZE,
2002                   entry->mmap_flag);
2003
2004         pfn = entry->address >> PAGE_SHIFT;
2005         switch (entry->mmap_flag) {
2006         case EFA_MMAP_IO_NC:
2007                 err = rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn,
2008                                         entry->rdma_entry.npages * PAGE_SIZE,
2009                                         pgprot_noncached(vma->vm_page_prot),
2010                                         rdma_entry);
2011                 break;
2012         case EFA_MMAP_IO_WC:
2013                 err = rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn,
2014                                         entry->rdma_entry.npages * PAGE_SIZE,
2015                                         pgprot_writecombine(vma->vm_page_prot),
2016                                         rdma_entry);
2017                 break;
2018         case EFA_MMAP_DMA_PAGE:
2019                 for (va = vma->vm_start; va < vma->vm_end;
2020                      va += PAGE_SIZE, pfn++) {
2021                         err = vm_insert_page(vma, va, pfn_to_page(pfn));
2022                         if (err)
2023                                 break;
2024                 }
2025                 break;
2026         default:
2027                 err = -EINVAL;
2028         }
2029
2030         if (err) {
2031                 ibdev_dbg(
2032                         &dev->ibdev,
2033                         "Couldn't mmap address[%#llx] length[%#zx] mmap_flag[%d] err[%d]\n",
2034                         entry->address, rdma_entry->npages * PAGE_SIZE,
2035                         entry->mmap_flag, err);
2036                 atomic64_inc(&dev->stats.mmap_err);
2037         }
2038
2039         rdma_user_mmap_entry_put(rdma_entry);
2040         return err;
2041 }
2042
2043 int efa_mmap(struct ib_ucontext *ibucontext,
2044              struct vm_area_struct *vma)
2045 {
2046         struct efa_ucontext *ucontext = to_eucontext(ibucontext);
2047         struct efa_dev *dev = to_edev(ibucontext->device);
2048         size_t length = vma->vm_end - vma->vm_start;
2049
2050         ibdev_dbg(&dev->ibdev,
2051                   "start %#lx, end %#lx, length = %#zx, pgoff = %#lx\n",
2052                   vma->vm_start, vma->vm_end, length, vma->vm_pgoff);
2053
2054         return __efa_mmap(dev, ucontext, vma);
2055 }
2056
2057 static int efa_ah_destroy(struct efa_dev *dev, struct efa_ah *ah)
2058 {
2059         struct efa_com_destroy_ah_params params = {
2060                 .ah = ah->ah,
2061                 .pdn = to_epd(ah->ibah.pd)->pdn,
2062         };
2063
2064         return efa_com_destroy_ah(&dev->edev, &params);
2065 }
2066
2067 int efa_create_ah(struct ib_ah *ibah,
2068                   struct rdma_ah_init_attr *init_attr,
2069                   struct ib_udata *udata)
2070 {
2071         struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
2072         struct efa_dev *dev = to_edev(ibah->device);
2073         struct efa_com_create_ah_params params = {};
2074         struct efa_ibv_create_ah_resp resp = {};
2075         struct efa_com_create_ah_result result;
2076         struct efa_ah *ah = to_eah(ibah);
2077         int err;
2078
2079         if (!(init_attr->flags & RDMA_CREATE_AH_SLEEPABLE)) {
2080                 ibdev_dbg(&dev->ibdev,
2081                           "Create address handle is not supported in atomic context\n");
2082                 err = -EOPNOTSUPP;
2083                 goto err_out;
2084         }
2085
2086         if (udata->inlen &&
2087             !ib_is_udata_cleared(udata, 0, udata->inlen)) {
2088                 ibdev_dbg(&dev->ibdev, "Incompatible ABI params\n");
2089                 err = -EINVAL;
2090                 goto err_out;
2091         }
2092
2093         memcpy(params.dest_addr, ah_attr->grh.dgid.raw,
2094                sizeof(params.dest_addr));
2095         params.pdn = to_epd(ibah->pd)->pdn;
2096         err = efa_com_create_ah(&dev->edev, &params, &result);
2097         if (err)
2098                 goto err_out;
2099
2100         memcpy(ah->id, ah_attr->grh.dgid.raw, sizeof(ah->id));
2101         ah->ah = result.ah;
2102
2103         resp.efa_address_handle = result.ah;
2104
2105         if (udata->outlen) {
2106                 err = ib_copy_to_udata(udata, &resp,
2107                                        min(sizeof(resp), udata->outlen));
2108                 if (err) {
2109                         ibdev_dbg(&dev->ibdev,
2110                                   "Failed to copy udata for create_ah response\n");
2111                         goto err_destroy_ah;
2112                 }
2113         }
2114         ibdev_dbg(&dev->ibdev, "Created ah[%d]\n", ah->ah);
2115
2116         return 0;
2117
2118 err_destroy_ah:
2119         efa_ah_destroy(dev, ah);
2120 err_out:
2121         atomic64_inc(&dev->stats.create_ah_err);
2122         return err;
2123 }
2124
2125 int efa_destroy_ah(struct ib_ah *ibah, u32 flags)
2126 {
2127         struct efa_dev *dev = to_edev(ibah->pd->device);
2128         struct efa_ah *ah = to_eah(ibah);
2129
2130         ibdev_dbg(&dev->ibdev, "Destroy ah[%d]\n", ah->ah);
2131
2132         if (!(flags & RDMA_DESTROY_AH_SLEEPABLE)) {
2133                 ibdev_dbg(&dev->ibdev,
2134                           "Destroy address handle is not supported in atomic context\n");
2135                 return -EOPNOTSUPP;
2136         }
2137
2138         efa_ah_destroy(dev, ah);
2139         return 0;
2140 }
2141
2142 struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev,
2143                                               u32 port_num)
2144 {
2145         return rdma_alloc_hw_stats_struct(efa_port_stats_descs,
2146                                           ARRAY_SIZE(efa_port_stats_descs),
2147                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2148 }
2149
2150 struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev)
2151 {
2152         return rdma_alloc_hw_stats_struct(efa_device_stats_descs,
2153                                           ARRAY_SIZE(efa_device_stats_descs),
2154                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2155 }
2156
2157 static int efa_fill_device_stats(struct efa_dev *dev,
2158                                  struct rdma_hw_stats *stats)
2159 {
2160         struct efa_com_stats_admin *as = &dev->edev.aq.stats;
2161         struct efa_stats *s = &dev->stats;
2162
2163         stats->value[EFA_SUBMITTED_CMDS] = atomic64_read(&as->submitted_cmd);
2164         stats->value[EFA_COMPLETED_CMDS] = atomic64_read(&as->completed_cmd);
2165         stats->value[EFA_CMDS_ERR] = atomic64_read(&as->cmd_err);
2166         stats->value[EFA_NO_COMPLETION_CMDS] = atomic64_read(&as->no_completion);
2167
2168         stats->value[EFA_KEEP_ALIVE_RCVD] = atomic64_read(&s->keep_alive_rcvd);
2169         stats->value[EFA_ALLOC_PD_ERR] = atomic64_read(&s->alloc_pd_err);
2170         stats->value[EFA_CREATE_QP_ERR] = atomic64_read(&s->create_qp_err);
2171         stats->value[EFA_CREATE_CQ_ERR] = atomic64_read(&s->create_cq_err);
2172         stats->value[EFA_REG_MR_ERR] = atomic64_read(&s->reg_mr_err);
2173         stats->value[EFA_ALLOC_UCONTEXT_ERR] =
2174                 atomic64_read(&s->alloc_ucontext_err);
2175         stats->value[EFA_CREATE_AH_ERR] = atomic64_read(&s->create_ah_err);
2176         stats->value[EFA_MMAP_ERR] = atomic64_read(&s->mmap_err);
2177
2178         return ARRAY_SIZE(efa_device_stats_descs);
2179 }
2180
2181 static int efa_fill_port_stats(struct efa_dev *dev, struct rdma_hw_stats *stats,
2182                                u32 port_num)
2183 {
2184         struct efa_com_get_stats_params params = {};
2185         union efa_com_get_stats_result result;
2186         struct efa_com_rdma_write_stats *rws;
2187         struct efa_com_rdma_read_stats *rrs;
2188         struct efa_com_messages_stats *ms;
2189         struct efa_com_basic_stats *bs;
2190         int err;
2191
2192         params.scope = EFA_ADMIN_GET_STATS_SCOPE_ALL;
2193         params.type = EFA_ADMIN_GET_STATS_TYPE_BASIC;
2194
2195         err = efa_com_get_stats(&dev->edev, &params, &result);
2196         if (err)
2197                 return err;
2198
2199         bs = &result.basic_stats;
2200         stats->value[EFA_TX_BYTES] = bs->tx_bytes;
2201         stats->value[EFA_TX_PKTS] = bs->tx_pkts;
2202         stats->value[EFA_RX_BYTES] = bs->rx_bytes;
2203         stats->value[EFA_RX_PKTS] = bs->rx_pkts;
2204         stats->value[EFA_RX_DROPS] = bs->rx_drops;
2205
2206         params.type = EFA_ADMIN_GET_STATS_TYPE_MESSAGES;
2207         err = efa_com_get_stats(&dev->edev, &params, &result);
2208         if (err)
2209                 return err;
2210
2211         ms = &result.messages_stats;
2212         stats->value[EFA_SEND_BYTES] = ms->send_bytes;
2213         stats->value[EFA_SEND_WRS] = ms->send_wrs;
2214         stats->value[EFA_RECV_BYTES] = ms->recv_bytes;
2215         stats->value[EFA_RECV_WRS] = ms->recv_wrs;
2216
2217         params.type = EFA_ADMIN_GET_STATS_TYPE_RDMA_READ;
2218         err = efa_com_get_stats(&dev->edev, &params, &result);
2219         if (err)
2220                 return err;
2221
2222         rrs = &result.rdma_read_stats;
2223         stats->value[EFA_RDMA_READ_WRS] = rrs->read_wrs;
2224         stats->value[EFA_RDMA_READ_BYTES] = rrs->read_bytes;
2225         stats->value[EFA_RDMA_READ_WR_ERR] = rrs->read_wr_err;
2226         stats->value[EFA_RDMA_READ_RESP_BYTES] = rrs->read_resp_bytes;
2227
2228         if (EFA_DEV_CAP(dev, RDMA_WRITE)) {
2229                 params.type = EFA_ADMIN_GET_STATS_TYPE_RDMA_WRITE;
2230                 err = efa_com_get_stats(&dev->edev, &params, &result);
2231                 if (err)
2232                         return err;
2233
2234                 rws = &result.rdma_write_stats;
2235                 stats->value[EFA_RDMA_WRITE_WRS] = rws->write_wrs;
2236                 stats->value[EFA_RDMA_WRITE_BYTES] = rws->write_bytes;
2237                 stats->value[EFA_RDMA_WRITE_WR_ERR] = rws->write_wr_err;
2238                 stats->value[EFA_RDMA_WRITE_RECV_BYTES] = rws->write_recv_bytes;
2239         }
2240
2241         return ARRAY_SIZE(efa_port_stats_descs);
2242 }
2243
2244 int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats,
2245                      u32 port_num, int index)
2246 {
2247         if (port_num)
2248                 return efa_fill_port_stats(to_edev(ibdev), stats, port_num);
2249         else
2250                 return efa_fill_device_stats(to_edev(ibdev), stats);
2251 }
2252
2253 enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev,
2254                                          u32 port_num)
2255 {
2256         return IB_LINK_LAYER_UNSPECIFIED;
2257 }
2258
2259 DECLARE_UVERBS_NAMED_METHOD(EFA_IB_METHOD_MR_QUERY,
2260                             UVERBS_ATTR_IDR(EFA_IB_ATTR_QUERY_MR_HANDLE,
2261                                             UVERBS_OBJECT_MR,
2262                                             UVERBS_ACCESS_READ,
2263                                             UA_MANDATORY),
2264                             UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY,
2265                                                 UVERBS_ATTR_TYPE(u16),
2266                                                 UA_MANDATORY),
2267                             UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID,
2268                                                 UVERBS_ATTR_TYPE(u16),
2269                                                 UA_MANDATORY),
2270                             UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID,
2271                                                 UVERBS_ATTR_TYPE(u16),
2272                                                 UA_MANDATORY),
2273                             UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID,
2274                                                 UVERBS_ATTR_TYPE(u16),
2275                                                 UA_MANDATORY));
2276
2277 ADD_UVERBS_METHODS(efa_mr,
2278                    UVERBS_OBJECT_MR,
2279                    &UVERBS_METHOD(EFA_IB_METHOD_MR_QUERY));
2280
2281 const struct uapi_definition efa_uapi_defs[] = {
2282         UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_MR,
2283                                 &efa_mr),
2284         {},
2285 };