drivers/infiniband/hw/i40iw/i40iw_verbs.c

   1 /*******************************************************************************
   2 *
   3 * Copyright (c) 2015-2016 Intel Corporation.  All rights reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenFabrics.org BSD license below:
  10 *
  11 *   Redistribution and use in source and binary forms, with or
  12 *   without modification, are permitted provided that the following
  13 *   conditions are met:
  14 *
  15 *    - Redistributions of source code must retain the above
  16 *       copyright notice, this list of conditions and the following
  17 *       disclaimer.
  18 *
  19 *    - Redistributions in binary form must reproduce the above
  20 *       copyright notice, this list of conditions and the following
  21 *       disclaimer in the documentation and/or other materials
  22 *       provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 *
  33 *******************************************************************************/
  34
  35 #include <linux/module.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/random.h>
  38 #include <linux/highmem.h>
  39 #include <linux/time.h>
  40 #include <asm/byteorder.h>
  41 #include <net/ip.h>
  42 #include <rdma/ib_verbs.h>
  43 #include <rdma/iw_cm.h>
  44 #include <rdma/ib_user_verbs.h>
  45 #include <rdma/ib_umem.h>
  46 #include "i40iw.h"
  47
  48 /**
  49  * i40iw_query_device - get device attributes
  50  * @ibdev: device pointer from stack
  51  * @props: returning device attributes
  52  * @udata: user data
  53  */
  54 static int i40iw_query_device(struct ib_device *ibdev,
  55                               struct ib_device_attr *props,
  56                               struct ib_udata *udata)
  57 {
  58         struct i40iw_device *iwdev = to_iwdev(ibdev);
  59
  60         if (udata->inlen || udata->outlen)
  61                 return -EINVAL;
  62         memset(props, 0, sizeof(*props));
  63         ether_addr_copy((u8 *)&props->sys_image_guid, iwdev->netdev->dev_addr);
  64         props->fw_ver = I40IW_FW_VERSION;
  65         props->device_cap_flags = iwdev->device_cap_flags;
  66         props->vendor_id = iwdev->vendor_id;
  67         props->vendor_part_id = iwdev->vendor_part_id;
  68         props->hw_ver = (u32)iwdev->sc_dev.hw_rev;
  69         props->max_mr_size = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
  70         props->max_qp = iwdev->max_qp;
  71         props->max_qp_wr = (I40IW_MAX_WQ_ENTRIES >> 2) - 1;
  72         props->max_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
  73         props->max_cq = iwdev->max_cq;
  74         props->max_cqe = iwdev->max_cqe;
  75         props->max_mr = iwdev->max_mr;
  76         props->max_pd = iwdev->max_pd;
  77         props->max_sge_rd = 1;
  78         props->max_qp_rd_atom = I40IW_MAX_IRD_SIZE;
  79         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
  80         props->atomic_cap = IB_ATOMIC_NONE;
  81         props->max_map_per_fmr = 1;
  82         return 0;
  83 }
  84
  85 /**
  86  * i40iw_query_port - get port attrubutes
  87  * @ibdev: device pointer from stack
  88  * @port: port number for query
  89  * @props: returning device attributes
  90  */
  91 static int i40iw_query_port(struct ib_device *ibdev,
  92                             u8 port,
  93                             struct ib_port_attr *props)
  94 {
  95         struct i40iw_device *iwdev = to_iwdev(ibdev);
  96         struct net_device *netdev = iwdev->netdev;
  97
  98         memset(props, 0, sizeof(*props));
  99
 100         props->max_mtu = IB_MTU_4096;
 101         if (netdev->mtu >= 4096)
 102                 props->active_mtu = IB_MTU_4096;
 103         else if (netdev->mtu >= 2048)
 104                 props->active_mtu = IB_MTU_2048;
 105         else if (netdev->mtu >= 1024)
 106                 props->active_mtu = IB_MTU_1024;
 107         else if (netdev->mtu >= 512)
 108                 props->active_mtu = IB_MTU_512;
 109         else
 110                 props->active_mtu = IB_MTU_256;
 111
 112         props->lid = 1;
 113         if (netif_carrier_ok(iwdev->netdev))
 114                 props->state = IB_PORT_ACTIVE;
 115         else
 116                 props->state = IB_PORT_DOWN;
 117         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 118                 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 119         props->gid_tbl_len = 1;
 120         props->pkey_tbl_len = 1;
 121         props->active_width = IB_WIDTH_4X;
 122         props->active_speed = 1;
 123         props->max_msg_sz = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
 124         return 0;
 125 }
 126
 127 /**
 128  * i40iw_alloc_ucontext - Allocate the user context data structure
 129  * @ibdev: device pointer from stack
 130  * @udata: user data
 131  *
 132  * This keeps track of all objects associated with a particular
 133  * user-mode client.
 134  */
 135 static struct ib_ucontext *i40iw_alloc_ucontext(struct ib_device *ibdev,
 136                                                 struct ib_udata *udata)
 137 {
 138         struct i40iw_device *iwdev = to_iwdev(ibdev);
 139         struct i40iw_alloc_ucontext_req req;
 140         struct i40iw_alloc_ucontext_resp uresp;
 141         struct i40iw_ucontext *ucontext;
 142
 143         if (ib_copy_from_udata(&req, udata, sizeof(req)))
 144                 return ERR_PTR(-EINVAL);
 145
 146         if (req.userspace_ver != I40IW_ABI_USERSPACE_VER) {
 147                 i40iw_pr_err("Invalid userspace driver version detected. Detected version %d, should be %d\n",
 148                              req.userspace_ver, I40IW_ABI_USERSPACE_VER);
 149                 return ERR_PTR(-EINVAL);
 150         }
 151
 152         memset(&uresp, 0, sizeof(uresp));
 153         uresp.max_qps = iwdev->max_qp;
 154         uresp.max_pds = iwdev->max_pd;
 155         uresp.wq_size = iwdev->max_qp_wr * 2;
 156         uresp.kernel_ver = I40IW_ABI_KERNEL_VER;
 157
 158         ucontext = kzalloc(sizeof(*ucontext), GFP_KERNEL);
 159         if (!ucontext)
 160                 return ERR_PTR(-ENOMEM);
 161
 162         ucontext->iwdev = iwdev;
 163
 164         if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 165                 kfree(ucontext);
 166                 return ERR_PTR(-EFAULT);
 167         }
 168
 169         INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
 170         spin_lock_init(&ucontext->cq_reg_mem_list_lock);
 171         INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
 172         spin_lock_init(&ucontext->qp_reg_mem_list_lock);
 173
 174         return &ucontext->ibucontext;
 175 }
 176
 177 /**
 178  * i40iw_dealloc_ucontext - deallocate the user context data structure
 179  * @context: user context created during alloc
 180  */
 181 static int i40iw_dealloc_ucontext(struct ib_ucontext *context)
 182 {
 183         struct i40iw_ucontext *ucontext = to_ucontext(context);
 184         unsigned long flags;
 185
 186         spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
 187         if (!list_empty(&ucontext->cq_reg_mem_list)) {
 188                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 189                 return -EBUSY;
 190         }
 191         spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 192         spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
 193         if (!list_empty(&ucontext->qp_reg_mem_list)) {
 194                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 195                 return -EBUSY;
 196         }
 197         spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 198
 199         kfree(ucontext);
 200         return 0;
 201 }
 202
 203 /**
 204  * i40iw_mmap - user memory map
 205  * @context: context created during alloc
 206  * @vma: kernel info for user memory map
 207  */
 208 static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 209 {
 210         struct i40iw_ucontext *ucontext;
 211         u64 db_addr_offset;
 212         u64 push_offset;
 213
 214         ucontext = to_ucontext(context);
 215         if (ucontext->iwdev->sc_dev.is_pf) {
 216                 db_addr_offset = I40IW_DB_ADDR_OFFSET;
 217                 push_offset = I40IW_PUSH_OFFSET;
 218                 if (vma->vm_pgoff)
 219                         vma->vm_pgoff += I40IW_PF_FIRST_PUSH_PAGE_INDEX - 1;
 220         } else {
 221                 db_addr_offset = I40IW_VF_DB_ADDR_OFFSET;
 222                 push_offset = I40IW_VF_PUSH_OFFSET;
 223                 if (vma->vm_pgoff)
 224                         vma->vm_pgoff += I40IW_VF_FIRST_PUSH_PAGE_INDEX - 1;
 225         }
 226
 227         vma->vm_pgoff += db_addr_offset >> PAGE_SHIFT;
 228
 229         if (vma->vm_pgoff == (db_addr_offset >> PAGE_SHIFT)) {
 230                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 231                 vma->vm_private_data = ucontext;
 232         } else {
 233                 if ((vma->vm_pgoff - (push_offset >> PAGE_SHIFT)) % 2)
 234                         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 235                 else
 236                         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 237         }
 238
 239         if (io_remap_pfn_range(vma, vma->vm_start,
 240                                vma->vm_pgoff + (pci_resource_start(ucontext->iwdev->ldev->pcidev, 0) >> PAGE_SHIFT),
 241                                PAGE_SIZE, vma->vm_page_prot))
 242                 return -EAGAIN;
 243
 244         return 0;
 245 }
 246
 247 /**
 248  * i40iw_alloc_push_page - allocate a push page for qp
 249  * @iwdev: iwarp device
 250  * @qp: hardware control qp
 251  */
 252 static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 253 {
 254         struct i40iw_cqp_request *cqp_request;
 255         struct cqp_commands_info *cqp_info;
 256         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 257         enum i40iw_status_code status;
 258
 259         if (qp->push_idx != I40IW_INVALID_PUSH_PAGE_INDEX)
 260                 return;
 261
 262         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 263         if (!cqp_request)
 264                 return;
 265
 266         atomic_inc(&cqp_request->refcount);
 267
 268         cqp_info = &cqp_request->info;
 269         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 270         cqp_info->post_sq = 1;
 271
 272         cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
 273         cqp_info->in.u.manage_push_page.info.free_page = 0;
 274         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 275         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 276
 277         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 278         if (!status)
 279                 qp->push_idx = cqp_request->compl_info.op_ret_val;
 280         else
 281                 i40iw_pr_err("CQP-OP Push page fail");
 282         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 283 }
 284
 285 /**
 286  * i40iw_dealloc_push_page - free a push page for qp
 287  * @iwdev: iwarp device
 288  * @qp: hardware control qp
 289  */
 290 static void i40iw_dealloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 291 {
 292         struct i40iw_cqp_request *cqp_request;
 293         struct cqp_commands_info *cqp_info;
 294         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 295         enum i40iw_status_code status;
 296
 297         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX)
 298                 return;
 299
 300         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 301         if (!cqp_request)
 302                 return;
 303
 304         cqp_info = &cqp_request->info;
 305         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 306         cqp_info->post_sq = 1;
 307
 308         cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
 309         cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
 310         cqp_info->in.u.manage_push_page.info.free_page = 1;
 311         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 312         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 313
 314         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 315         if (!status)
 316                 qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 317         else
 318                 i40iw_pr_err("CQP-OP Push page fail");
 319 }
 320
 321 /**
 322  * i40iw_alloc_pd - allocate protection domain
 323  * @ibdev: device pointer from stack
 324  * @context: user context created during alloc
 325  * @udata: user data
 326  */
 327 static struct ib_pd *i40iw_alloc_pd(struct ib_device *ibdev,
 328                                     struct ib_ucontext *context,
 329                                     struct ib_udata *udata)
 330 {
 331         struct i40iw_pd *iwpd;
 332         struct i40iw_device *iwdev = to_iwdev(ibdev);
 333         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 334         struct i40iw_alloc_pd_resp uresp;
 335         struct i40iw_sc_pd *sc_pd;
 336         u32 pd_id = 0;
 337         int err;
 338
 339         err = i40iw_alloc_resource(iwdev, iwdev->allocated_pds,
 340                                    iwdev->max_pd, &pd_id, &iwdev->next_pd);
 341         if (err) {
 342                 i40iw_pr_err("alloc resource failed\n");
 343                 return ERR_PTR(err);
 344         }
 345
 346         iwpd = kzalloc(sizeof(*iwpd), GFP_KERNEL);
 347         if (!iwpd) {
 348                 err = -ENOMEM;
 349                 goto free_res;
 350         }
 351
 352         sc_pd = &iwpd->sc_pd;
 353         dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id);
 354
 355         if (context) {
 356                 memset(&uresp, 0, sizeof(uresp));
 357                 uresp.pd_id = pd_id;
 358                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 359                         err = -EFAULT;
 360                         goto error;
 361                 }
 362         }
 363
 364         i40iw_add_pdusecount(iwpd);
 365         return &iwpd->ibpd;
 366 error:
 367         kfree(iwpd);
 368 free_res:
 369         i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id);
 370         return ERR_PTR(err);
 371 }
 372
 373 /**
 374  * i40iw_dealloc_pd - deallocate pd
 375  * @ibpd: ptr of pd to be deallocated
 376  */
 377 static int i40iw_dealloc_pd(struct ib_pd *ibpd)
 378 {
 379         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 380         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 381
 382         i40iw_rem_pdusecount(iwpd, iwdev);
 383         return 0;
 384 }
 385
 386 /**
 387  * i40iw_qp_roundup - return round up qp ring size
 388  * @wr_ring_size: ring size to round up
 389  */
 390 static int i40iw_qp_roundup(u32 wr_ring_size)
 391 {
 392         int scount = 1;
 393
 394         if (wr_ring_size < I40IWQP_SW_MIN_WQSIZE)
 395                 wr_ring_size = I40IWQP_SW_MIN_WQSIZE;
 396
 397         for (wr_ring_size--; scount <= 16; scount *= 2)
 398                 wr_ring_size |= wr_ring_size >> scount;
 399         return ++wr_ring_size;
 400 }
 401
 402 /**
 403  * i40iw_get_pbl - Retrieve pbl from a list given a virtual
 404  * address
 405  * @va: user virtual address
 406  * @pbl_list: pbl list to search in (QP's or CQ's)
 407  */
 408 static struct i40iw_pbl *i40iw_get_pbl(unsigned long va,
 409                                        struct list_head *pbl_list)
 410 {
 411         struct i40iw_pbl *iwpbl;
 412
 413         list_for_each_entry(iwpbl, pbl_list, list) {
 414                 if (iwpbl->user_base == va) {
 415                         list_del(&iwpbl->list);
 416                         return iwpbl;
 417                 }
 418         }
 419         return NULL;
 420 }
 421
 422 /**
 423  * i40iw_free_qp_resources - free up memory resources for qp
 424  * @iwdev: iwarp device
 425  * @iwqp: qp ptr (user or kernel)
 426  * @qp_num: qp number assigned
 427  */
 428 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
 429                              struct i40iw_qp *iwqp,
 430                              u32 qp_num)
 431 {
 432         i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
 433         if (qp_num)
 434                 i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
 435         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->q2_ctx_mem);
 436         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->kqp.dma_mem);
 437         kfree(iwqp->kqp.wrid_mem);
 438         iwqp->kqp.wrid_mem = NULL;
 439         kfree(iwqp->allocated_buffer);
 440         iwqp->allocated_buffer = NULL;
 441 }
 442
 443 /**
 444  * i40iw_clean_cqes - clean cq entries for qp
 445  * @iwqp: qp ptr (user or kernel)
 446  * @iwcq: cq ptr
 447  */
 448 static void i40iw_clean_cqes(struct i40iw_qp *iwqp, struct i40iw_cq *iwcq)
 449 {
 450         struct i40iw_cq_uk *ukcq = &iwcq->sc_cq.cq_uk;
 451
 452         ukcq->ops.iw_cq_clean(&iwqp->sc_qp.qp_uk, ukcq);
 453 }
 454
 455 /**
 456  * i40iw_destroy_qp - destroy qp
 457  * @ibqp: qp's ib pointer also to get to device's qp address
 458  */
 459 static int i40iw_destroy_qp(struct ib_qp *ibqp)
 460 {
 461         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 462
 463         iwqp->destroyed = 1;
 464
 465         if (iwqp->ibqp_state >= IB_QPS_INIT && iwqp->ibqp_state < IB_QPS_RTS)
 466                 i40iw_next_iw_state(iwqp, I40IW_QP_STATE_ERROR, 0, 0, 0);
 467
 468         if (!iwqp->user_mode) {
 469                 if (iwqp->iwscq) {
 470                         i40iw_clean_cqes(iwqp, iwqp->iwscq);
 471                         if (iwqp->iwrcq != iwqp->iwscq)
 472                                 i40iw_clean_cqes(iwqp, iwqp->iwrcq);
 473                 }
 474         }
 475
 476         i40iw_rem_ref(&iwqp->ibqp);
 477         return 0;
 478 }
 479
 480 /**
 481  * i40iw_setup_virt_qp - setup for allocation of virtual qp
 482  * @dev: iwarp device
 483  * @qp: qp ptr
 484  * @init_info: initialize info to return
 485  */
 486 static int i40iw_setup_virt_qp(struct i40iw_device *iwdev,
 487                                struct i40iw_qp *iwqp,
 488                                struct i40iw_qp_init_info *init_info)
 489 {
 490         struct i40iw_pbl *iwpbl = iwqp->iwpbl;
 491         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
 492
 493         iwqp->page = qpmr->sq_page;
 494         init_info->shadow_area_pa = cpu_to_le64(qpmr->shadow);
 495         if (iwpbl->pbl_allocated) {
 496                 init_info->virtual_map = true;
 497                 init_info->sq_pa = qpmr->sq_pbl.idx;
 498                 init_info->rq_pa = qpmr->rq_pbl.idx;
 499         } else {
 500                 init_info->sq_pa = qpmr->sq_pbl.addr;
 501                 init_info->rq_pa = qpmr->rq_pbl.addr;
 502         }
 503         return 0;
 504 }
 505
 506 /**
 507  * i40iw_setup_kmode_qp - setup initialization for kernel mode qp
 508  * @iwdev: iwarp device
 509  * @iwqp: qp ptr (user or kernel)
 510  * @info: initialize info to return
 511  */
 512 static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
 513                                 struct i40iw_qp *iwqp,
 514                                 struct i40iw_qp_init_info *info)
 515 {
 516         struct i40iw_dma_mem *mem = &iwqp->kqp.dma_mem;
 517         u32 sqdepth, rqdepth;
 518         u32 sq_size, rq_size;
 519         u8 sqshift, rqshift;
 520         u32 size;
 521         enum i40iw_status_code status;
 522         struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
 523
 524         ukinfo->max_sq_frag_cnt = I40IW_MAX_WQ_FRAGMENT_COUNT;
 525
 526         sq_size = i40iw_qp_roundup(ukinfo->sq_size + 1);
 527         rq_size = i40iw_qp_roundup(ukinfo->rq_size + 1);
 528
 529         status = i40iw_get_wqe_shift(sq_size, ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift);
 530         if (!status)
 531                 status = i40iw_get_wqe_shift(rq_size, ukinfo->max_rq_frag_cnt, 0, &rqshift);
 532
 533         if (status)
 534                 return -ENOSYS;
 535
 536         sqdepth = sq_size << sqshift;
 537         rqdepth = rq_size << rqshift;
 538
 539         size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3);
 540         iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL);
 541
 542         ukinfo->sq_wrtrk_array = (struct i40iw_sq_uk_wr_trk_info *)iwqp->kqp.wrid_mem;
 543         if (!ukinfo->sq_wrtrk_array)
 544                 return -ENOMEM;
 545
 546         ukinfo->rq_wrid_array = (u64 *)&ukinfo->sq_wrtrk_array[sqdepth];
 547
 548         size = (sqdepth + rqdepth) * I40IW_QP_WQE_MIN_SIZE;
 549         size += (I40IW_SHADOW_AREA_SIZE << 3);
 550
 551         status = i40iw_allocate_dma_mem(iwdev->sc_dev.hw, mem, size, 256);
 552         if (status) {
 553                 kfree(ukinfo->sq_wrtrk_array);
 554                 ukinfo->sq_wrtrk_array = NULL;
 555                 return -ENOMEM;
 556         }
 557
 558         ukinfo->sq = mem->va;
 559         info->sq_pa = mem->pa;
 560
 561         ukinfo->rq = &ukinfo->sq[sqdepth];
 562         info->rq_pa = info->sq_pa + (sqdepth * I40IW_QP_WQE_MIN_SIZE);
 563
 564         ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
 565         info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE);
 566
 567         ukinfo->sq_size = sq_size;
 568         ukinfo->rq_size = rq_size;
 569         ukinfo->qp_id = iwqp->ibqp.qp_num;
 570         return 0;
 571 }
 572
 573 /**
 574  * i40iw_create_qp - create qp
 575  * @ibpd: ptr of pd
 576  * @init_attr: attributes for qp
 577  * @udata: user data for create qp
 578  */
 579 static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
 580                                      struct ib_qp_init_attr *init_attr,
 581                                      struct ib_udata *udata)
 582 {
 583         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 584         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 585         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 586         struct i40iw_qp *iwqp;
 587         struct i40iw_ucontext *ucontext;
 588         struct i40iw_create_qp_req req;
 589         struct i40iw_create_qp_resp uresp;
 590         u32 qp_num = 0;
 591         void *mem;
 592         enum i40iw_status_code ret;
 593         int err_code;
 594         int sq_size;
 595         int rq_size;
 596         struct i40iw_sc_qp *qp;
 597         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 598         struct i40iw_qp_init_info init_info;
 599         struct i40iw_create_qp_info *qp_info;
 600         struct i40iw_cqp_request *cqp_request;
 601         struct cqp_commands_info *cqp_info;
 602
 603         struct i40iw_qp_host_ctx_info *ctx_info;
 604         struct i40iwarp_offload_info *iwarp_info;
 605         unsigned long flags;
 606
 607         if (init_attr->create_flags)
 608                 return ERR_PTR(-EINVAL);
 609         if (init_attr->cap.max_inline_data > I40IW_MAX_INLINE_DATA_SIZE)
 610                 init_attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 611
 612         if (init_attr->cap.max_send_sge > I40IW_MAX_WQ_FRAGMENT_COUNT)
 613                 init_attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
 614
 615         memset(&init_info, 0, sizeof(init_info));
 616
 617         sq_size = init_attr->cap.max_send_wr;
 618         rq_size = init_attr->cap.max_recv_wr;
 619
 620         init_info.qp_uk_init_info.sq_size = sq_size;
 621         init_info.qp_uk_init_info.rq_size = rq_size;
 622         init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
 623         init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
 624         init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data;
 625
 626         mem = kzalloc(sizeof(*iwqp), GFP_KERNEL);
 627         if (!mem)
 628                 return ERR_PTR(-ENOMEM);
 629
 630         iwqp = (struct i40iw_qp *)mem;
 631         qp = &iwqp->sc_qp;
 632         qp->back_qp = (void *)iwqp;
 633         qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 634
 635         iwqp->ctx_info.iwarp_info = &iwqp->iwarp_info;
 636
 637         if (i40iw_allocate_dma_mem(dev->hw,
 638                                    &iwqp->q2_ctx_mem,
 639                                    I40IW_Q2_BUFFER_SIZE + I40IW_QP_CTX_SIZE,
 640                                    256)) {
 641                 i40iw_pr_err("dma_mem failed\n");
 642                 err_code = -ENOMEM;
 643                 goto error;
 644         }
 645
 646         init_info.q2 = iwqp->q2_ctx_mem.va;
 647         init_info.q2_pa = iwqp->q2_ctx_mem.pa;
 648
 649         init_info.host_ctx = (void *)init_info.q2 + I40IW_Q2_BUFFER_SIZE;
 650         init_info.host_ctx_pa = init_info.q2_pa + I40IW_Q2_BUFFER_SIZE;
 651
 652         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_qps, iwdev->max_qp,
 653                                         &qp_num, &iwdev->next_qp);
 654         if (err_code) {
 655                 i40iw_pr_err("qp resource\n");
 656                 goto error;
 657         }
 658
 659         iwqp->allocated_buffer = mem;
 660         iwqp->iwdev = iwdev;
 661         iwqp->iwpd = iwpd;
 662         iwqp->ibqp.qp_num = qp_num;
 663         qp = &iwqp->sc_qp;
 664         iwqp->iwscq = to_iwcq(init_attr->send_cq);
 665         iwqp->iwrcq = to_iwcq(init_attr->recv_cq);
 666
 667         iwqp->host_ctx.va = init_info.host_ctx;
 668         iwqp->host_ctx.pa = init_info.host_ctx_pa;
 669         iwqp->host_ctx.size = I40IW_QP_CTX_SIZE;
 670
 671         init_info.pd = &iwpd->sc_pd;
 672         init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num;
 673         iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
 674
 675         if (init_attr->qp_type != IB_QPT_RC) {
 676                 err_code = -ENOSYS;
 677                 goto error;
 678         }
 679         if (iwdev->push_mode)
 680                 i40iw_alloc_push_page(iwdev, qp);
 681         if (udata) {
 682                 err_code = ib_copy_from_udata(&req, udata, sizeof(req));
 683                 if (err_code) {
 684                         i40iw_pr_err("ib_copy_from_data\n");
 685                         goto error;
 686                 }
 687                 iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
 688                 if (ibpd->uobject && ibpd->uobject->context) {
 689                         iwqp->user_mode = 1;
 690                         ucontext = to_ucontext(ibpd->uobject->context);
 691
 692                         if (req.user_wqe_buffers) {
 693                                 spin_lock_irqsave(
 694                                     &ucontext->qp_reg_mem_list_lock, flags);
 695                                 iwqp->iwpbl = i40iw_get_pbl(
 696                                     (unsigned long)req.user_wqe_buffers,
 697                                     &ucontext->qp_reg_mem_list);
 698                                 spin_unlock_irqrestore(
 699                                     &ucontext->qp_reg_mem_list_lock, flags);
 700
 701                                 if (!iwqp->iwpbl) {
 702                                         err_code = -ENODATA;
 703                                         i40iw_pr_err("no pbl info\n");
 704                                         goto error;
 705                                 }
 706                         }
 707                 }
 708                 err_code = i40iw_setup_virt_qp(iwdev, iwqp, &init_info);
 709         } else {
 710                 err_code = i40iw_setup_kmode_qp(iwdev, iwqp, &init_info);
 711         }
 712
 713         if (err_code) {
 714                 i40iw_pr_err("setup qp failed\n");
 715                 goto error;
 716         }
 717
 718         init_info.type = I40IW_QP_TYPE_IWARP;
 719         ret = dev->iw_priv_qp_ops->qp_init(qp, &init_info);
 720         if (ret) {
 721                 err_code = -EPROTO;
 722                 i40iw_pr_err("qp_init fail\n");
 723                 goto error;
 724         }
 725         ctx_info = &iwqp->ctx_info;
 726         iwarp_info = &iwqp->iwarp_info;
 727         iwarp_info->rd_enable = true;
 728         iwarp_info->wr_rdresp_en = true;
 729         if (!iwqp->user_mode)
 730                 iwarp_info->priv_mode_en = true;
 731         iwarp_info->ddp_ver = 1;
 732         iwarp_info->rdmap_ver = 1;
 733
 734         ctx_info->iwarp_info_valid = true;
 735         ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 736         ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 737         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) {
 738                 ctx_info->push_mode_en = false;
 739         } else {
 740                 ctx_info->push_mode_en = true;
 741                 ctx_info->push_idx = qp->push_idx;
 742         }
 743
 744         ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 745                                              (u64 *)iwqp->host_ctx.va,
 746                                              ctx_info);
 747         ctx_info->iwarp_info_valid = false;
 748         cqp_request = i40iw_get_cqp_request(iwcqp, true);
 749         if (!cqp_request) {
 750                 err_code = -ENOMEM;
 751                 goto error;
 752         }
 753         cqp_info = &cqp_request->info;
 754         qp_info = &cqp_request->info.in.u.qp_create.info;
 755
 756         memset(qp_info, 0, sizeof(*qp_info));
 757
 758         qp_info->cq_num_valid = true;
 759         qp_info->next_iwarp_state = I40IW_QP_STATE_IDLE;
 760
 761         cqp_info->cqp_cmd = OP_QP_CREATE;
 762         cqp_info->post_sq = 1;
 763         cqp_info->in.u.qp_create.qp = qp;
 764         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
 765         ret = i40iw_handle_cqp_op(iwdev, cqp_request);
 766         if (ret) {
 767                 i40iw_pr_err("CQP-OP QP create fail");
 768                 err_code = -EACCES;
 769                 goto error;
 770         }
 771
 772         i40iw_add_ref(&iwqp->ibqp);
 773         spin_lock_init(&iwqp->lock);
 774         iwqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
 775         iwdev->qp_table[qp_num] = iwqp;
 776         i40iw_add_pdusecount(iwqp->iwpd);
 777         if (ibpd->uobject && udata) {
 778                 memset(&uresp, 0, sizeof(uresp));
 779                 uresp.actual_sq_size = sq_size;
 780                 uresp.actual_rq_size = rq_size;
 781                 uresp.qp_id = qp_num;
 782                 uresp.push_idx = qp->push_idx;
 783                 err_code = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
 784                 if (err_code) {
 785                         i40iw_pr_err("copy_to_udata failed\n");
 786                         i40iw_destroy_qp(&iwqp->ibqp);
 787                            /* let the completion of the qp destroy free the qp */
 788                         return ERR_PTR(err_code);
 789                 }
 790         }
 791
 792         return &iwqp->ibqp;
 793 error:
 794         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 795         kfree(mem);
 796         return ERR_PTR(err_code);
 797 }
 798
 799 /**
 800  * i40iw_query - query qp attributes
 801  * @ibqp: qp pointer
 802  * @attr: attributes pointer
 803  * @attr_mask: Not used
 804  * @init_attr: qp attributes to return
 805  */
 806 static int i40iw_query_qp(struct ib_qp *ibqp,
 807                           struct ib_qp_attr *attr,
 808                           int attr_mask,
 809                           struct ib_qp_init_attr *init_attr)
 810 {
 811         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 812         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
 813
 814         attr->qp_access_flags = 0;
 815         attr->cap.max_send_wr = qp->qp_uk.sq_size;
 816         attr->cap.max_recv_wr = qp->qp_uk.rq_size;
 817         attr->cap.max_recv_sge = 1;
 818         attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 819         init_attr->event_handler = iwqp->ibqp.event_handler;
 820         init_attr->qp_context = iwqp->ibqp.qp_context;
 821         init_attr->send_cq = iwqp->ibqp.send_cq;
 822         init_attr->recv_cq = iwqp->ibqp.recv_cq;
 823         init_attr->srq = iwqp->ibqp.srq;
 824         init_attr->cap = attr->cap;
 825         return 0;
 826 }
 827
 828 /**
 829  * i40iw_hw_modify_qp - setup cqp for modify qp
 830  * @iwdev: iwarp device
 831  * @iwqp: qp ptr (user or kernel)
 832  * @info: info for modify qp
 833  * @wait: flag to wait or not for modify qp completion
 834  */
 835 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
 836                         struct i40iw_modify_qp_info *info, bool wait)
 837 {
 838         enum i40iw_status_code status;
 839         struct i40iw_cqp_request *cqp_request;
 840         struct cqp_commands_info *cqp_info;
 841         struct i40iw_modify_qp_info *m_info;
 842
 843         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait);
 844         if (!cqp_request)
 845                 return;
 846
 847         cqp_info = &cqp_request->info;
 848         m_info = &cqp_info->in.u.qp_modify.info;
 849         memcpy(m_info, info, sizeof(*m_info));
 850         cqp_info->cqp_cmd = OP_QP_MODIFY;
 851         cqp_info->post_sq = 1;
 852         cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
 853         cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
 854         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 855         if (status)
 856                 i40iw_pr_err("CQP-OP Modify QP fail");
 857 }
 858
 859 /**
 860  * i40iw_modify_qp - modify qp request
 861  * @ibqp: qp's pointer for modify
 862  * @attr: access attributes
 863  * @attr_mask: state mask
 864  * @udata: user data
 865  */
 866 int i40iw_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 867                     int attr_mask, struct ib_udata *udata)
 868 {
 869         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 870         struct i40iw_device *iwdev = iwqp->iwdev;
 871         struct i40iw_qp_host_ctx_info *ctx_info;
 872         struct i40iwarp_offload_info *iwarp_info;
 873         struct i40iw_modify_qp_info info;
 874         u8 issue_modify_qp = 0;
 875         u8 dont_wait = 0;
 876         u32 err;
 877         unsigned long flags;
 878
 879         memset(&info, 0, sizeof(info));
 880         ctx_info = &iwqp->ctx_info;
 881         iwarp_info = &iwqp->iwarp_info;
 882
 883         spin_lock_irqsave(&iwqp->lock, flags);
 884
 885         if (attr_mask & IB_QP_STATE) {
 886                 switch (attr->qp_state) {
 887                 case IB_QPS_INIT:
 888                 case IB_QPS_RTR:
 889                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_IDLE) {
 890                                 err = -EINVAL;
 891                                 goto exit;
 892                         }
 893                         if (iwqp->iwarp_state == I40IW_QP_STATE_INVALID) {
 894                                 info.next_iwarp_state = I40IW_QP_STATE_IDLE;
 895                                 issue_modify_qp = 1;
 896                         }
 897                         break;
 898                 case IB_QPS_RTS:
 899                         if ((iwqp->iwarp_state > (u32)I40IW_QP_STATE_RTS) ||
 900                             (!iwqp->cm_id)) {
 901                                 err = -EINVAL;
 902                                 goto exit;
 903                         }
 904
 905                         issue_modify_qp = 1;
 906                         iwqp->hw_tcp_state = I40IW_TCP_STATE_ESTABLISHED;
 907                         iwqp->hte_added = 1;
 908                         info.next_iwarp_state = I40IW_QP_STATE_RTS;
 909                         info.tcp_ctx_valid = true;
 910                         info.ord_valid = true;
 911                         info.arp_cache_idx_valid = true;
 912                         info.cq_num_valid = true;
 913                         break;
 914                 case IB_QPS_SQD:
 915                         if (iwqp->hw_iwarp_state > (u32)I40IW_QP_STATE_RTS) {
 916                                 err = 0;
 917                                 goto exit;
 918                         }
 919                         if ((iwqp->iwarp_state == (u32)I40IW_QP_STATE_CLOSING) ||
 920                             (iwqp->iwarp_state < (u32)I40IW_QP_STATE_RTS)) {
 921                                 err = 0;
 922                                 goto exit;
 923                         }
 924                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_CLOSING) {
 925                                 err = -EINVAL;
 926                                 goto exit;
 927                         }
 928                         info.next_iwarp_state = I40IW_QP_STATE_CLOSING;
 929                         issue_modify_qp = 1;
 930                         break;
 931                 case IB_QPS_SQE:
 932                         if (iwqp->iwarp_state >= (u32)I40IW_QP_STATE_TERMINATE) {
 933                                 err = -EINVAL;
 934                                 goto exit;
 935                         }
 936                         info.next_iwarp_state = I40IW_QP_STATE_TERMINATE;
 937                         issue_modify_qp = 1;
 938                         break;
 939                 case IB_QPS_ERR:
 940                 case IB_QPS_RESET:
 941                         if (iwqp->iwarp_state == (u32)I40IW_QP_STATE_ERROR) {
 942                                 err = -EINVAL;
 943                                 goto exit;
 944                         }
 945                         if (iwqp->sc_qp.term_flags)
 946                                 del_timer(&iwqp->terminate_timer);
 947                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 948                         if ((iwqp->hw_tcp_state > I40IW_TCP_STATE_CLOSED) &&
 949                             iwdev->iw_status &&
 950                             (iwqp->hw_tcp_state != I40IW_TCP_STATE_TIME_WAIT))
 951                                 info.reset_tcp_conn = true;
 952                         else
 953                                 dont_wait = 1;
 954                         issue_modify_qp = 1;
 955                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 956                         break;
 957                 default:
 958                         err = -EINVAL;
 959                         goto exit;
 960                 }
 961
 962                 iwqp->ibqp_state = attr->qp_state;
 963
 964                 if (issue_modify_qp)
 965                         iwqp->iwarp_state = info.next_iwarp_state;
 966                 else
 967                         info.next_iwarp_state = iwqp->iwarp_state;
 968         }
 969         if (attr_mask & IB_QP_ACCESS_FLAGS) {
 970                 ctx_info->iwarp_info_valid = true;
 971                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
 972                         iwarp_info->wr_rdresp_en = true;
 973                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
 974                         iwarp_info->wr_rdresp_en = true;
 975                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
 976                         iwarp_info->rd_enable = true;
 977                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND)
 978                         iwarp_info->bind_en = true;
 979
 980                 if (iwqp->user_mode) {
 981                         iwarp_info->rd_enable = true;
 982                         iwarp_info->wr_rdresp_en = true;
 983                         iwarp_info->priv_mode_en = false;
 984                 }
 985         }
 986
 987         if (ctx_info->iwarp_info_valid) {
 988                 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 989                 int ret;
 990
 991                 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 992                 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 993                 ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 994                                                      (u64 *)iwqp->host_ctx.va,
 995                                                      ctx_info);
 996                 if (ret) {
 997                         i40iw_pr_err("setting QP context\n");
 998                         err = -EINVAL;
 999                         goto exit;
1000                 }
1001         }
1002
1003         spin_unlock_irqrestore(&iwqp->lock, flags);
1004
1005         if (issue_modify_qp)
1006                 i40iw_hw_modify_qp(iwdev, iwqp, &info, true);
1007
1008         if (issue_modify_qp && (iwqp->ibqp_state > IB_QPS_RTS)) {
1009                 if (dont_wait) {
1010                         if (iwqp->cm_id && iwqp->hw_tcp_state) {
1011                                 spin_lock_irqsave(&iwqp->lock, flags);
1012                                 iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
1013                                 iwqp->last_aeq = I40IW_AE_RESET_SENT;
1014                                 spin_unlock_irqrestore(&iwqp->lock, flags);
1015                         }
1016                 }
1017         }
1018         return 0;
1019 exit:
1020         spin_unlock_irqrestore(&iwqp->lock, flags);
1021         return err;
1022 }
1023
1024 /**
1025  * cq_free_resources - free up recources for cq
1026  * @iwdev: iwarp device
1027  * @iwcq: cq ptr
1028  */
1029 static void cq_free_resources(struct i40iw_device *iwdev, struct i40iw_cq *iwcq)
1030 {
1031         struct i40iw_sc_cq *cq = &iwcq->sc_cq;
1032
1033         if (!iwcq->user_mode)
1034                 i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwcq->kmem);
1035         i40iw_free_resource(iwdev, iwdev->allocated_cqs, cq->cq_uk.cq_id);
1036 }
1037
1038 /**
1039  * cq_wq_destroy - send cq destroy cqp
1040  * @iwdev: iwarp device
1041  * @cq: hardware control cq
1042  */
1043 static void cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq)
1044 {
1045         enum i40iw_status_code status;
1046         struct i40iw_cqp_request *cqp_request;
1047         struct cqp_commands_info *cqp_info;
1048
1049         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1050         if (!cqp_request)
1051                 return;
1052
1053         cqp_info = &cqp_request->info;
1054
1055         cqp_info->cqp_cmd = OP_CQ_DESTROY;
1056         cqp_info->post_sq = 1;
1057         cqp_info->in.u.cq_destroy.cq = cq;
1058         cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
1059         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1060         if (status)
1061                 i40iw_pr_err("CQP-OP Destroy QP fail");
1062 }
1063
1064 /**
1065  * i40iw_destroy_cq - destroy cq
1066  * @ib_cq: cq pointer
1067  */
1068 static int i40iw_destroy_cq(struct ib_cq *ib_cq)
1069 {
1070         struct i40iw_cq *iwcq;
1071         struct i40iw_device *iwdev;
1072         struct i40iw_sc_cq *cq;
1073
1074         if (!ib_cq) {
1075                 i40iw_pr_err("ib_cq == NULL\n");
1076                 return 0;
1077         }
1078
1079         iwcq = to_iwcq(ib_cq);
1080         iwdev = to_iwdev(ib_cq->device);
1081         cq = &iwcq->sc_cq;
1082         cq_wq_destroy(iwdev, cq);
1083         cq_free_resources(iwdev, iwcq);
1084         kfree(iwcq);
1085         return 0;
1086 }
1087
1088 /**
1089  * i40iw_create_cq - create cq
1090  * @ibdev: device pointer from stack
1091  * @attr: attributes for cq
1092  * @context: user context created during alloc
1093  * @udata: user data
1094  */
1095 static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev,
1096                                      const struct ib_cq_init_attr *attr,
1097                                      struct ib_ucontext *context,
1098                                      struct ib_udata *udata)
1099 {
1100         struct i40iw_device *iwdev = to_iwdev(ibdev);
1101         struct i40iw_cq *iwcq;
1102         struct i40iw_pbl *iwpbl;
1103         u32 cq_num = 0;
1104         struct i40iw_sc_cq *cq;
1105         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1106         struct i40iw_cq_init_info info;
1107         enum i40iw_status_code status;
1108         struct i40iw_cqp_request *cqp_request;
1109         struct cqp_commands_info *cqp_info;
1110         struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
1111         unsigned long flags;
1112         int err_code;
1113         int entries = attr->cqe;
1114
1115         if (entries > iwdev->max_cqe)
1116                 return ERR_PTR(-EINVAL);
1117
1118         iwcq = kzalloc(sizeof(*iwcq), GFP_KERNEL);
1119         if (!iwcq)
1120                 return ERR_PTR(-ENOMEM);
1121
1122         memset(&info, 0, sizeof(info));
1123
1124         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs,
1125                                         iwdev->max_cq, &cq_num,
1126                                         &iwdev->next_cq);
1127         if (err_code)
1128                 goto error;
1129
1130         cq = &iwcq->sc_cq;
1131         cq->back_cq = (void *)iwcq;
1132         spin_lock_init(&iwcq->lock);
1133
1134         info.dev = dev;
1135         ukinfo->cq_size = max(entries, 4);
1136         ukinfo->cq_id = cq_num;
1137         iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
1138         info.ceqe_mask = 0;
1139         info.ceq_id = 0;
1140         info.ceq_id_valid = true;
1141         info.ceqe_mask = 1;
1142         info.type = I40IW_CQ_TYPE_IWARP;
1143         if (context) {
1144                 struct i40iw_ucontext *ucontext;
1145                 struct i40iw_create_cq_req req;
1146                 struct i40iw_cq_mr *cqmr;
1147
1148                 memset(&req, 0, sizeof(req));
1149                 iwcq->user_mode = true;
1150                 ucontext = to_ucontext(context);
1151                 if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req)))
1152                         goto cq_free_resources;
1153
1154                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1155                 iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,
1156                                       &ucontext->cq_reg_mem_list);
1157                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1158                 if (!iwpbl) {
1159                         err_code = -EPROTO;
1160                         goto cq_free_resources;
1161                 }
1162
1163                 iwcq->iwpbl = iwpbl;
1164                 iwcq->cq_mem_size = 0;
1165                 cqmr = &iwpbl->cq_mr;
1166                 info.shadow_area_pa = cpu_to_le64(cqmr->shadow);
1167                 if (iwpbl->pbl_allocated) {
1168                         info.virtual_map = true;
1169                         info.pbl_chunk_size = 1;
1170                         info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
1171                 } else {
1172                         info.cq_base_pa = cqmr->cq_pbl.addr;
1173                 }
1174         } else {
1175                 /* Kmode allocations */
1176                 int rsize;
1177                 int shadow;
1178
1179                 rsize = info.cq_uk_init_info.cq_size * sizeof(struct i40iw_cqe);
1180                 rsize = round_up(rsize, 256);
1181                 shadow = I40IW_SHADOW_AREA_SIZE << 3;
1182                 status = i40iw_allocate_dma_mem(dev->hw, &iwcq->kmem,
1183                                                 rsize + shadow, 256);
1184                 if (status) {
1185                         err_code = -ENOMEM;
1186                         goto cq_free_resources;
1187                 }
1188                 ukinfo->cq_base = iwcq->kmem.va;
1189                 info.cq_base_pa = iwcq->kmem.pa;
1190                 info.shadow_area_pa = info.cq_base_pa + rsize;
1191                 ukinfo->shadow_area = iwcq->kmem.va + rsize;
1192         }
1193
1194         if (dev->iw_priv_cq_ops->cq_init(cq, &info)) {
1195                 i40iw_pr_err("init cq fail\n");
1196                 err_code = -EPROTO;
1197                 goto cq_free_resources;
1198         }
1199
1200         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1201         if (!cqp_request) {
1202                 err_code = -ENOMEM;
1203                 goto cq_free_resources;
1204         }
1205
1206         cqp_info = &cqp_request->info;
1207         cqp_info->cqp_cmd = OP_CQ_CREATE;
1208         cqp_info->post_sq = 1;
1209         cqp_info->in.u.cq_create.cq = cq;
1210         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1211         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1212         if (status) {
1213                 i40iw_pr_err("CQP-OP Create QP fail");
1214                 err_code = -EPROTO;
1215                 goto cq_free_resources;
1216         }
1217
1218         if (context) {
1219                 struct i40iw_create_cq_resp resp;
1220
1221                 memset(&resp, 0, sizeof(resp));
1222                 resp.cq_id = info.cq_uk_init_info.cq_id;
1223                 resp.cq_size = info.cq_uk_init_info.cq_size;
1224                 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
1225                         i40iw_pr_err("copy to user data\n");
1226                         err_code = -EPROTO;
1227                         goto cq_destroy;
1228                 }
1229         }
1230
1231         return (struct ib_cq *)iwcq;
1232
1233 cq_destroy:
1234         cq_wq_destroy(iwdev, cq);
1235 cq_free_resources:
1236         cq_free_resources(iwdev, iwcq);
1237 error:
1238         kfree(iwcq);
1239         return ERR_PTR(err_code);
1240 }
1241
1242 /**
1243  * i40iw_get_user_access - get hw access from IB access
1244  * @acc: IB access to return hw access
1245  */
1246 static inline u16 i40iw_get_user_access(int acc)
1247 {
1248         u16 access = 0;
1249
1250         access |= (acc & IB_ACCESS_LOCAL_WRITE) ? I40IW_ACCESS_FLAGS_LOCALWRITE : 0;
1251         access |= (acc & IB_ACCESS_REMOTE_WRITE) ? I40IW_ACCESS_FLAGS_REMOTEWRITE : 0;
1252         access |= (acc & IB_ACCESS_REMOTE_READ) ? I40IW_ACCESS_FLAGS_REMOTEREAD : 0;
1253         access |= (acc & IB_ACCESS_MW_BIND) ? I40IW_ACCESS_FLAGS_BIND_WINDOW : 0;
1254         return access;
1255 }
1256
1257 /**
1258  * i40iw_free_stag - free stag resource
1259  * @iwdev: iwarp device
1260  * @stag: stag to free
1261  */
1262 static void i40iw_free_stag(struct i40iw_device *iwdev, u32 stag)
1263 {
1264         u32 stag_idx;
1265
1266         stag_idx = (stag & iwdev->mr_stagmask) >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1267         i40iw_free_resource(iwdev, iwdev->allocated_mrs, stag_idx);
1268 }
1269
1270 /**
1271  * i40iw_create_stag - create random stag
1272  * @iwdev: iwarp device
1273  */
1274 static u32 i40iw_create_stag(struct i40iw_device *iwdev)
1275 {
1276         u32 stag = 0;
1277         u32 stag_index = 0;
1278         u32 next_stag_index;
1279         u32 driver_key;
1280         u32 random;
1281         u8 consumer_key;
1282         int ret;
1283
1284         get_random_bytes(&random, sizeof(random));
1285         consumer_key = (u8)random;
1286
1287         driver_key = random & ~iwdev->mr_stagmask;
1288         next_stag_index = (random & iwdev->mr_stagmask) >> 8;
1289         next_stag_index %= iwdev->max_mr;
1290
1291         ret = i40iw_alloc_resource(iwdev,
1292                                    iwdev->allocated_mrs, iwdev->max_mr,
1293                                    &stag_index, &next_stag_index);
1294         if (!ret) {
1295                 stag = stag_index << I40IW_CQPSQ_STAG_IDX_SHIFT;
1296                 stag |= driver_key;
1297                 stag += (u32)consumer_key;
1298         }
1299         return stag;
1300 }
1301
1302 /**
1303  * i40iw_next_pbl_addr - Get next pbl address
1304  * @palloc: Poiner to allocated pbles
1305  * @pbl: pointer to a pble
1306  * @pinfo: info pointer
1307  * @idx: index
1308  */
1309 static inline u64 *i40iw_next_pbl_addr(struct i40iw_pble_alloc *palloc,
1310                                        u64 *pbl,
1311                                        struct i40iw_pble_info **pinfo,
1312                                        u32 *idx)
1313 {
1314         *idx += 1;
1315         if ((!(*pinfo)) || (*idx != (*pinfo)->cnt))
1316                 return ++pbl;
1317         *idx = 0;
1318         (*pinfo)++;
1319         return (u64 *)(*pinfo)->addr;
1320 }
1321
1322 /**
1323  * i40iw_copy_user_pgaddrs - copy user page address to pble's os locally
1324  * @iwmr: iwmr for IB's user page addresses
1325  * @pbl: ple pointer to save 1 level or 0 level pble
1326  * @level: indicated level 0, 1 or 2
1327  */
1328 static void i40iw_copy_user_pgaddrs(struct i40iw_mr *iwmr,
1329                                     u64 *pbl,
1330                                     enum i40iw_pble_level level)
1331 {
1332         struct ib_umem *region = iwmr->region;
1333         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1334         int chunk_pages, entry, pg_shift, i;
1335         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1336         struct i40iw_pble_info *pinfo;
1337         struct scatterlist *sg;
1338         u32 idx = 0;
1339
1340         pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf;
1341         pg_shift = ffs(region->page_size) - 1;
1342         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
1343                 chunk_pages = sg_dma_len(sg) >> pg_shift;
1344                 if ((iwmr->type == IW_MEMREG_TYPE_QP) &&
1345                     !iwpbl->qp_mr.sq_page)
1346                         iwpbl->qp_mr.sq_page = sg_page(sg);
1347                 for (i = 0; i < chunk_pages; i++) {
1348                         *pbl = cpu_to_le64(sg_dma_address(sg) + region->page_size * i);
1349                         pbl = i40iw_next_pbl_addr(palloc, pbl, &pinfo, &idx);
1350                 }
1351         }
1352 }
1353
1354 /**
1355  * i40iw_setup_pbles - copy user pg address to pble's
1356  * @iwdev: iwarp device
1357  * @iwmr: mr pointer for this memory registration
1358  * @use_pbles: flag if to use pble's or memory (level 0)
1359  */
1360 static int i40iw_setup_pbles(struct i40iw_device *iwdev,
1361                              struct i40iw_mr *iwmr,
1362                              bool use_pbles)
1363 {
1364         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1365         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1366         struct i40iw_pble_info *pinfo;
1367         u64 *pbl;
1368         enum i40iw_status_code status;
1369         enum i40iw_pble_level level = I40IW_LEVEL_1;
1370
1371         if (!use_pbles && (iwmr->page_cnt > MAX_SAVE_PAGE_ADDRS))
1372                 return -ENOMEM;
1373
1374         if (use_pbles) {
1375                 mutex_lock(&iwdev->pbl_mutex);
1376                 status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
1377                 mutex_unlock(&iwdev->pbl_mutex);
1378                 if (status)
1379                         return -ENOMEM;
1380
1381                 iwpbl->pbl_allocated = true;
1382                 level = palloc->level;
1383                 pinfo = (level == I40IW_LEVEL_1) ? &palloc->level1 : palloc->level2.leaf;
1384                 pbl = (u64 *)pinfo->addr;
1385         } else {
1386                 pbl = iwmr->pgaddrmem;
1387         }
1388
1389         i40iw_copy_user_pgaddrs(iwmr, pbl, level);
1390         return 0;
1391 }
1392
1393 /**
1394  * i40iw_handle_q_mem - handle memory for qp and cq
1395  * @iwdev: iwarp device
1396  * @req: information for q memory management
1397  * @iwpbl: pble struct
1398  * @use_pbles: flag to use pble
1399  */
1400 static int i40iw_handle_q_mem(struct i40iw_device *iwdev,
1401                               struct i40iw_mem_reg_req *req,
1402                               struct i40iw_pbl *iwpbl,
1403                               bool use_pbles)
1404 {
1405         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1406         struct i40iw_mr *iwmr = iwpbl->iwmr;
1407         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
1408         struct i40iw_cq_mr *cqmr = &iwpbl->cq_mr;
1409         struct i40iw_hmc_pble *hmc_p;
1410         u64 *arr = iwmr->pgaddrmem;
1411         int err;
1412         int total;
1413
1414         total = req->sq_pages + req->rq_pages + req->cq_pages;
1415
1416         err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1417         if (err)
1418                 return err;
1419         if (use_pbles && (palloc->level != I40IW_LEVEL_1)) {
1420                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1421                 iwpbl->pbl_allocated = false;
1422                 return -ENOMEM;
1423         }
1424
1425         if (use_pbles)
1426                 arr = (u64 *)palloc->level1.addr;
1427         if (req->reg_type == IW_MEMREG_TYPE_QP) {
1428                 hmc_p = &qpmr->sq_pbl;
1429                 qpmr->shadow = (dma_addr_t)arr[total];
1430                 if (use_pbles) {
1431                         hmc_p->idx = palloc->level1.idx;
1432                         hmc_p = &qpmr->rq_pbl;
1433                         hmc_p->idx = palloc->level1.idx + req->sq_pages;
1434                 } else {
1435                         hmc_p->addr = arr[0];
1436                         hmc_p = &qpmr->rq_pbl;
1437                         hmc_p->addr = arr[1];
1438                 }
1439         } else {                /* CQ */
1440                 hmc_p = &cqmr->cq_pbl;
1441                 cqmr->shadow = (dma_addr_t)arr[total];
1442                 if (use_pbles)
1443                         hmc_p->idx = palloc->level1.idx;
1444                 else
1445                         hmc_p->addr = arr[0];
1446         }
1447         return err;
1448 }
1449
1450 /**
1451  * i40iw_hwreg_mr - send cqp command for memory registration
1452  * @iwdev: iwarp device
1453  * @iwmr: iwarp mr pointer
1454  * @access: access for MR
1455  */
1456 static int i40iw_hwreg_mr(struct i40iw_device *iwdev,
1457                           struct i40iw_mr *iwmr,
1458                           u16 access)
1459 {
1460         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1461         struct i40iw_reg_ns_stag_info *stag_info;
1462         struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
1463         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1464         enum i40iw_status_code status;
1465         int err = 0;
1466         struct i40iw_cqp_request *cqp_request;
1467         struct cqp_commands_info *cqp_info;
1468
1469         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1470         if (!cqp_request)
1471                 return -ENOMEM;
1472
1473         cqp_info = &cqp_request->info;
1474         stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
1475         memset(stag_info, 0, sizeof(*stag_info));
1476         stag_info->va = (void *)(unsigned long)iwpbl->user_base;
1477         stag_info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1478         stag_info->stag_key = (u8)iwmr->stag;
1479         stag_info->total_len = iwmr->length;
1480         stag_info->access_rights = access;
1481         stag_info->pd_id = iwpd->sc_pd.pd_id;
1482         stag_info->addr_type = I40IW_ADDR_TYPE_VA_BASED;
1483
1484         if (iwmr->page_cnt > 1) {
1485                 if (palloc->level == I40IW_LEVEL_1) {
1486                         stag_info->first_pm_pbl_index = palloc->level1.idx;
1487                         stag_info->chunk_size = 1;
1488                 } else {
1489                         stag_info->first_pm_pbl_index = palloc->level2.root.idx;
1490                         stag_info->chunk_size = 3;
1491                 }
1492         } else {
1493                 stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
1494         }
1495
1496         cqp_info->cqp_cmd = OP_MR_REG_NON_SHARED;
1497         cqp_info->post_sq = 1;
1498         cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->sc_dev;
1499         cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
1500
1501         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1502         if (status) {
1503                 err = -ENOMEM;
1504                 i40iw_pr_err("CQP-OP MR Reg fail");
1505         }
1506         return err;
1507 }
1508
1509 /**
1510  * i40iw_reg_user_mr - Register a user memory region
1511  * @pd: ptr of pd
1512  * @start: virtual start address
1513  * @length: length of mr
1514  * @virt: virtual address
1515  * @acc: access of mr
1516  * @udata: user data
1517  */
1518 static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
1519                                        u64 start,
1520                                        u64 length,
1521                                        u64 virt,
1522                                        int acc,
1523                                        struct ib_udata *udata)
1524 {
1525         struct i40iw_pd *iwpd = to_iwpd(pd);
1526         struct i40iw_device *iwdev = to_iwdev(pd->device);
1527         struct i40iw_ucontext *ucontext;
1528         struct i40iw_pble_alloc *palloc;
1529         struct i40iw_pbl *iwpbl;
1530         struct i40iw_mr *iwmr;
1531         struct ib_umem *region;
1532         struct i40iw_mem_reg_req req;
1533         u64 pbl_depth = 0;
1534         u32 stag = 0;
1535         u16 access;
1536         u64 region_length;
1537         bool use_pbles = false;
1538         unsigned long flags;
1539         int err = -ENOSYS;
1540
1541         if (length > I40IW_MAX_MR_SIZE)
1542                 return ERR_PTR(-EINVAL);
1543         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
1544         if (IS_ERR(region))
1545                 return (struct ib_mr *)region;
1546
1547         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
1548                 ib_umem_release(region);
1549                 return ERR_PTR(-EFAULT);
1550         }
1551
1552         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1553         if (!iwmr) {
1554                 ib_umem_release(region);
1555                 return ERR_PTR(-ENOMEM);
1556         }
1557
1558         iwpbl = &iwmr->iwpbl;
1559         iwpbl->iwmr = iwmr;
1560         iwmr->region = region;
1561         iwmr->ibmr.pd = pd;
1562         iwmr->ibmr.device = pd->device;
1563         ucontext = to_ucontext(pd->uobject->context);
1564         region_length = region->length + (start & 0xfff);
1565         pbl_depth = region_length >> 12;
1566         pbl_depth += (region_length & (4096 - 1)) ? 1 : 0;
1567         iwmr->length = region->length;
1568
1569         iwpbl->user_base = virt;
1570         palloc = &iwpbl->pble_alloc;
1571
1572         iwmr->type = req.reg_type;
1573         iwmr->page_cnt = (u32)pbl_depth;
1574
1575         switch (req.reg_type) {
1576         case IW_MEMREG_TYPE_QP:
1577                 use_pbles = ((req.sq_pages + req.rq_pages) > 2);
1578                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1579                 if (err)
1580                         goto error;
1581                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1582                 list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
1583                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1584                 break;
1585         case IW_MEMREG_TYPE_CQ:
1586                 use_pbles = (req.cq_pages > 1);
1587                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1588                 if (err)
1589                         goto error;
1590
1591                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1592                 list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
1593                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1594                 break;
1595         case IW_MEMREG_TYPE_MEM:
1596                 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1597
1598                 use_pbles = (iwmr->page_cnt != 1);
1599                 err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1600                 if (err)
1601                         goto error;
1602
1603                 access |= i40iw_get_user_access(acc);
1604                 stag = i40iw_create_stag(iwdev);
1605                 if (!stag) {
1606                         err = -ENOMEM;
1607                         goto error;
1608                 }
1609
1610                 iwmr->stag = stag;
1611                 iwmr->ibmr.rkey = stag;
1612                 iwmr->ibmr.lkey = stag;
1613
1614                 err = i40iw_hwreg_mr(iwdev, iwmr, access);
1615                 if (err) {
1616                         i40iw_free_stag(iwdev, stag);
1617                         goto error;
1618                 }
1619                 break;
1620         default:
1621                 goto error;
1622         }
1623
1624         iwmr->type = req.reg_type;
1625         if (req.reg_type == IW_MEMREG_TYPE_MEM)
1626                 i40iw_add_pdusecount(iwpd);
1627         return &iwmr->ibmr;
1628
1629 error:
1630         if (palloc->level != I40IW_LEVEL_0)
1631                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1632         ib_umem_release(region);
1633         kfree(iwmr);
1634         return ERR_PTR(err);
1635 }
1636
1637 /**
1638  * i40iw_reg_phys_mr - register kernel physical memory
1639  * @pd: ibpd pointer
1640  * @addr: physical address of memory to register
1641  * @size: size of memory to register
1642  * @acc: Access rights
1643  * @iova_start: start of virtual address for physical buffers
1644  */
1645 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd,
1646                                 u64 addr,
1647                                 u64 size,
1648                                 int acc,
1649                                 u64 *iova_start)
1650 {
1651         struct i40iw_pd *iwpd = to_iwpd(pd);
1652         struct i40iw_device *iwdev = to_iwdev(pd->device);
1653         struct i40iw_pbl *iwpbl;
1654         struct i40iw_mr *iwmr;
1655         enum i40iw_status_code status;
1656         u32 stag;
1657         u16 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1658         int ret;
1659
1660         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1661         if (!iwmr)
1662                 return ERR_PTR(-ENOMEM);
1663         iwmr->ibmr.pd = pd;
1664         iwmr->ibmr.device = pd->device;
1665         iwpbl = &iwmr->iwpbl;
1666         iwpbl->iwmr = iwmr;
1667         iwmr->type = IW_MEMREG_TYPE_MEM;
1668         iwpbl->user_base = *iova_start;
1669         stag = i40iw_create_stag(iwdev);
1670         if (!stag) {
1671                 ret = -EOVERFLOW;
1672                 goto err;
1673         }
1674         access |= i40iw_get_user_access(acc);
1675         iwmr->stag = stag;
1676         iwmr->ibmr.rkey = stag;
1677         iwmr->ibmr.lkey = stag;
1678         iwmr->page_cnt = 1;
1679         iwmr->pgaddrmem[0]  = addr;
1680         status = i40iw_hwreg_mr(iwdev, iwmr, access);
1681         if (status) {
1682                 i40iw_free_stag(iwdev, stag);
1683                 ret = -ENOMEM;
1684                 goto err;
1685         }
1686
1687         i40iw_add_pdusecount(iwpd);
1688         return &iwmr->ibmr;
1689  err:
1690         kfree(iwmr);
1691         return ERR_PTR(ret);
1692 }
1693
1694 /**
1695  * i40iw_get_dma_mr - register physical mem
1696  * @pd: ptr of pd
1697  * @acc: access for memory
1698  */
1699 static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc)
1700 {
1701         u64 kva = 0;
1702
1703         return i40iw_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
1704 }
1705
1706 /**
1707  * i40iw_del_mem_list - Deleting pbl list entries for CQ/QP
1708  * @iwmr: iwmr for IB's user page addresses
1709  * @ucontext: ptr to user context
1710  */
1711 static void i40iw_del_memlist(struct i40iw_mr *iwmr,
1712                               struct i40iw_ucontext *ucontext)
1713 {
1714         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1715         unsigned long flags;
1716
1717         switch (iwmr->type) {
1718         case IW_MEMREG_TYPE_CQ:
1719                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1720                 if (!list_empty(&ucontext->cq_reg_mem_list))
1721                         list_del(&iwpbl->list);
1722                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1723                 break;
1724         case IW_MEMREG_TYPE_QP:
1725                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1726                 if (!list_empty(&ucontext->qp_reg_mem_list))
1727                         list_del(&iwpbl->list);
1728                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1729                 break;
1730         default:
1731                 break;
1732         }
1733 }
1734
1735 /**
1736  * i40iw_dereg_mr - deregister mr
1737  * @ib_mr: mr ptr for dereg
1738  */
1739 static int i40iw_dereg_mr(struct ib_mr *ib_mr)
1740 {
1741         struct ib_pd *ibpd = ib_mr->pd;
1742         struct i40iw_pd *iwpd = to_iwpd(ibpd);
1743         struct i40iw_mr *iwmr = to_iwmr(ib_mr);
1744         struct i40iw_device *iwdev = to_iwdev(ib_mr->device);
1745         enum i40iw_status_code status;
1746         struct i40iw_dealloc_stag_info *info;
1747         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1748         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1749         struct i40iw_cqp_request *cqp_request;
1750         struct cqp_commands_info *cqp_info;
1751         u32 stag_idx;
1752
1753         if (iwmr->region)
1754                 ib_umem_release(iwmr->region);
1755
1756         if (iwmr->type != IW_MEMREG_TYPE_MEM) {
1757                 if (ibpd->uobject) {
1758                         struct i40iw_ucontext *ucontext;
1759
1760                         ucontext = to_ucontext(ibpd->uobject->context);
1761                         i40iw_del_memlist(iwmr, ucontext);
1762                 }
1763                 if (iwpbl->pbl_allocated)
1764                         i40iw_free_pble(iwdev->pble_rsrc, palloc);
1765                 kfree(iwpbl->iwmr);
1766                 iwpbl->iwmr = NULL;
1767                 return 0;
1768         }
1769
1770         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1771         if (!cqp_request)
1772                 return -ENOMEM;
1773
1774         cqp_info = &cqp_request->info;
1775         info = &cqp_info->in.u.dealloc_stag.info;
1776         memset(info, 0, sizeof(*info));
1777
1778         info->pd_id = cpu_to_le32(iwpd->sc_pd.pd_id & 0x00007fff);
1779         info->stag_idx = RS_64_1(ib_mr->rkey, I40IW_CQPSQ_STAG_IDX_SHIFT);
1780         stag_idx = info->stag_idx;
1781         info->mr = true;
1782         if (iwpbl->pbl_allocated)
1783                 info->dealloc_pbl = true;
1784
1785         cqp_info->cqp_cmd = OP_DEALLOC_STAG;
1786         cqp_info->post_sq = 1;
1787         cqp_info->in.u.dealloc_stag.dev = &iwdev->sc_dev;
1788         cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
1789         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1790         if (status)
1791                 i40iw_pr_err("CQP-OP dealloc failed for stag_idx = 0x%x\n", stag_idx);
1792         i40iw_rem_pdusecount(iwpd, iwdev);
1793         i40iw_free_stag(iwdev, iwmr->stag);
1794         if (iwpbl->pbl_allocated)
1795                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1796         kfree(iwmr);
1797         return 0;
1798 }
1799
1800 /**
1801  * i40iw_show_rev
1802  */
1803 static ssize_t i40iw_show_rev(struct device *dev,
1804                               struct device_attribute *attr, char *buf)
1805 {
1806         struct i40iw_ib_device *iwibdev = container_of(dev,
1807                                                        struct i40iw_ib_device,
1808                                                        ibdev.dev);
1809         u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev;
1810
1811         return sprintf(buf, "%x\n", hw_rev);
1812 }
1813
1814 /**
1815  * i40iw_show_fw_ver
1816  */
1817 static ssize_t i40iw_show_fw_ver(struct device *dev,
1818                                  struct device_attribute *attr, char *buf)
1819 {
1820         u32 firmware_version = I40IW_FW_VERSION;
1821
1822         return sprintf(buf, "%u.%u\n", firmware_version,
1823                        (firmware_version & 0x000000ff));
1824 }
1825
1826 /**
1827  * i40iw_show_hca
1828  */
1829 static ssize_t i40iw_show_hca(struct device *dev,
1830                               struct device_attribute *attr, char *buf)
1831 {
1832         return sprintf(buf, "I40IW\n");
1833 }
1834
1835 /**
1836  * i40iw_show_board
1837  */
1838 static ssize_t i40iw_show_board(struct device *dev,
1839                                 struct device_attribute *attr,
1840                                 char *buf)
1841 {
1842         return sprintf(buf, "%.*s\n", 32, "I40IW Board ID");
1843 }
1844
1845 static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL);
1846 static DEVICE_ATTR(fw_ver, S_IRUGO, i40iw_show_fw_ver, NULL);
1847 static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL);
1848 static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL);
1849
1850 static struct device_attribute *i40iw_dev_attributes[] = {
1851         &dev_attr_hw_rev,
1852         &dev_attr_fw_ver,
1853         &dev_attr_hca_type,
1854         &dev_attr_board_id
1855 };
1856
1857 /**
1858  * i40iw_copy_sg_list - copy sg list for qp
1859  * @sg_list: copied into sg_list
1860  * @sgl: copy from sgl
1861  * @num_sges: count of sg entries
1862  */
1863 static void i40iw_copy_sg_list(struct i40iw_sge *sg_list, struct ib_sge *sgl, int num_sges)
1864 {
1865         unsigned int i;
1866
1867         for (i = 0; (i < num_sges) && (i < I40IW_MAX_WQ_FRAGMENT_COUNT); i++) {
1868                 sg_list[i].tag_off = sgl[i].addr;
1869                 sg_list[i].len = sgl[i].length;
1870                 sg_list[i].stag = sgl[i].lkey;
1871         }
1872 }
1873
1874 /**
1875  * i40iw_post_send -  kernel application wr
1876  * @ibqp: qp ptr for wr
1877  * @ib_wr: work request ptr
1878  * @bad_wr: return of bad wr if err
1879  */
1880 static int i40iw_post_send(struct ib_qp *ibqp,
1881                            struct ib_send_wr *ib_wr,
1882                            struct ib_send_wr **bad_wr)
1883 {
1884         struct i40iw_qp *iwqp;
1885         struct i40iw_qp_uk *ukqp;
1886         struct i40iw_post_sq_info info;
1887         enum i40iw_status_code ret;
1888         int err = 0;
1889         unsigned long flags;
1890
1891         iwqp = (struct i40iw_qp *)ibqp;
1892         ukqp = &iwqp->sc_qp.qp_uk;
1893
1894         spin_lock_irqsave(&iwqp->lock, flags);
1895         while (ib_wr) {
1896                 memset(&info, 0, sizeof(info));
1897                 info.wr_id = (u64)(ib_wr->wr_id);
1898                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
1899                         info.signaled = true;
1900                 if (ib_wr->send_flags & IB_SEND_FENCE)
1901                         info.read_fence = true;
1902
1903                 switch (ib_wr->opcode) {
1904                 case IB_WR_SEND:
1905                         if (ib_wr->send_flags & IB_SEND_SOLICITED)
1906                                 info.op_type = I40IW_OP_TYPE_SEND_SOL;
1907                         else
1908                                 info.op_type = I40IW_OP_TYPE_SEND;
1909
1910                         if (ib_wr->send_flags & IB_SEND_INLINE) {
1911                                 info.op.inline_send.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
1912                                 info.op.inline_send.len = ib_wr->sg_list[0].length;
1913                                 ret = ukqp->ops.iw_inline_send(ukqp, &info, rdma_wr(ib_wr)->rkey, false);
1914                         } else {
1915                                 info.op.send.num_sges = ib_wr->num_sge;
1916                                 info.op.send.sg_list = (struct i40iw_sge *)ib_wr->sg_list;
1917                                 ret = ukqp->ops.iw_send(ukqp, &info, rdma_wr(ib_wr)->rkey, false);
1918                         }
1919
1920                         if (ret)
1921                                 err = -EIO;
1922                         break;
1923                 case IB_WR_RDMA_WRITE:
1924                         info.op_type = I40IW_OP_TYPE_RDMA_WRITE;
1925
1926                         if (ib_wr->send_flags & IB_SEND_INLINE) {
1927                                 info.op.inline_rdma_write.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
1928                                 info.op.inline_rdma_write.len = ib_wr->sg_list[0].length;
1929                                 info.op.inline_rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
1930                                 info.op.inline_rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
1931                                 info.op.inline_rdma_write.rem_addr.len = ib_wr->sg_list->length;
1932                                 ret = ukqp->ops.iw_inline_rdma_write(ukqp, &info, false);
1933                         } else {
1934                                 info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list;
1935                                 info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
1936                                 info.op.rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
1937                                 info.op.rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
1938                                 info.op.rdma_write.rem_addr.len = ib_wr->sg_list->length;
1939                                 ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
1940                         }
1941
1942                         if (ret)
1943                                 err = -EIO;
1944                         break;
1945                 case IB_WR_RDMA_READ:
1946                         info.op_type = I40IW_OP_TYPE_RDMA_READ;
1947                         info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
1948                         info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey;
1949                         info.op.rdma_read.rem_addr.len = ib_wr->sg_list->length;
1950                         info.op.rdma_read.lo_addr.tag_off = ib_wr->sg_list->addr;
1951                         info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey;
1952                         info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length;
1953                         ret = ukqp->ops.iw_rdma_read(ukqp, &info, false, false);
1954                         if (ret)
1955                                 err = -EIO;
1956                         break;
1957                 default:
1958                         err = -EINVAL;
1959                         i40iw_pr_err(" upost_send bad opcode = 0x%x\n",
1960                                      ib_wr->opcode);
1961                         break;
1962                 }
1963
1964                 if (err)
1965                         break;
1966                 ib_wr = ib_wr->next;
1967         }
1968
1969         if (err)
1970                 *bad_wr = ib_wr;
1971         else
1972                 ukqp->ops.iw_qp_post_wr(ukqp);
1973         spin_unlock_irqrestore(&iwqp->lock, flags);
1974
1975         return err;
1976 }
1977
1978 /**
1979  * i40iw_post_recv - post receive wr for kernel application
1980  * @ibqp: ib qp pointer
1981  * @ib_wr: work request for receive
1982  * @bad_wr: bad wr caused an error
1983  */
1984 static int i40iw_post_recv(struct ib_qp *ibqp,
1985                            struct ib_recv_wr *ib_wr,
1986                            struct ib_recv_wr **bad_wr)
1987 {
1988         struct i40iw_qp *iwqp;
1989         struct i40iw_qp_uk *ukqp;
1990         struct i40iw_post_rq_info post_recv;
1991         struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT];
1992         enum i40iw_status_code ret = 0;
1993         unsigned long flags;
1994
1995         iwqp = (struct i40iw_qp *)ibqp;
1996         ukqp = &iwqp->sc_qp.qp_uk;
1997
1998         memset(&post_recv, 0, sizeof(post_recv));
1999         spin_lock_irqsave(&iwqp->lock, flags);
2000         while (ib_wr) {
2001                 post_recv.num_sges = ib_wr->num_sge;
2002                 post_recv.wr_id = ib_wr->wr_id;
2003                 i40iw_copy_sg_list(sg_list, ib_wr->sg_list, ib_wr->num_sge);
2004                 post_recv.sg_list = sg_list;
2005                 ret = ukqp->ops.iw_post_receive(ukqp, &post_recv);
2006                 if (ret) {
2007                         i40iw_pr_err(" post_recv err %d\n", ret);
2008                         *bad_wr = ib_wr;
2009                         goto out;
2010                 }
2011                 ib_wr = ib_wr->next;
2012         }
2013  out:
2014         spin_unlock_irqrestore(&iwqp->lock, flags);
2015         if (ret)
2016                 return -ENOSYS;
2017         return 0;
2018 }
2019
2020 /**
2021  * i40iw_poll_cq - poll cq for completion (kernel apps)
2022  * @ibcq: cq to poll
2023  * @num_entries: number of entries to poll
2024  * @entry: wr of entry completed
2025  */
2026 static int i40iw_poll_cq(struct ib_cq *ibcq,
2027                          int num_entries,
2028                          struct ib_wc *entry)
2029 {
2030         struct i40iw_cq *iwcq;
2031         int cqe_count = 0;
2032         struct i40iw_cq_poll_info cq_poll_info;
2033         enum i40iw_status_code ret;
2034         struct i40iw_cq_uk *ukcq;
2035         struct i40iw_sc_qp *qp;
2036         unsigned long flags;
2037
2038         iwcq = (struct i40iw_cq *)ibcq;
2039         ukcq = &iwcq->sc_cq.cq_uk;
2040
2041         spin_lock_irqsave(&iwcq->lock, flags);
2042         while (cqe_count < num_entries) {
2043                 ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info, true);
2044                 if (ret == I40IW_ERR_QUEUE_EMPTY) {
2045                         break;
2046                 } else if (ret) {
2047                         if (!cqe_count)
2048                                 cqe_count = -1;
2049                         break;
2050                 }
2051                 entry->wc_flags = 0;
2052                 entry->wr_id = cq_poll_info.wr_id;
2053                 if (!cq_poll_info.error)
2054                         entry->status = IB_WC_SUCCESS;
2055                 else
2056                         entry->status = IB_WC_WR_FLUSH_ERR;
2057
2058                 switch (cq_poll_info.op_type) {
2059                 case I40IW_OP_TYPE_RDMA_WRITE:
2060                         entry->opcode = IB_WC_RDMA_WRITE;
2061                         break;
2062                 case I40IW_OP_TYPE_RDMA_READ_INV_STAG:
2063                 case I40IW_OP_TYPE_RDMA_READ:
2064                         entry->opcode = IB_WC_RDMA_READ;
2065                         break;
2066                 case I40IW_OP_TYPE_SEND_SOL:
2067                 case I40IW_OP_TYPE_SEND_SOL_INV:
2068                 case I40IW_OP_TYPE_SEND_INV:
2069                 case I40IW_OP_TYPE_SEND:
2070                         entry->opcode = IB_WC_SEND;
2071                         break;
2072                 case I40IW_OP_TYPE_REC:
2073                         entry->opcode = IB_WC_RECV;
2074                         break;
2075                 default:
2076                         entry->opcode = IB_WC_RECV;
2077                         break;
2078                 }
2079
2080                 entry->vendor_err =
2081                     cq_poll_info.major_err << 16 | cq_poll_info.minor_err;
2082                 entry->ex.imm_data = 0;
2083                 qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle;
2084                 entry->qp = (struct ib_qp *)qp->back_qp;
2085                 entry->src_qp = cq_poll_info.qp_id;
2086                 entry->byte_len = cq_poll_info.bytes_xfered;
2087                 entry++;
2088                 cqe_count++;
2089         }
2090         spin_unlock_irqrestore(&iwcq->lock, flags);
2091         return cqe_count;
2092 }
2093
2094 /**
2095  * i40iw_req_notify_cq - arm cq kernel application
2096  * @ibcq: cq to arm
2097  * @notify_flags: notofication flags
2098  */
2099 static int i40iw_req_notify_cq(struct ib_cq *ibcq,
2100                                enum ib_cq_notify_flags notify_flags)
2101 {
2102         struct i40iw_cq *iwcq;
2103         struct i40iw_cq_uk *ukcq;
2104         enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_SOLICITED;
2105
2106         iwcq = (struct i40iw_cq *)ibcq;
2107         ukcq = &iwcq->sc_cq.cq_uk;
2108         if (notify_flags == IB_CQ_NEXT_COMP)
2109                 cq_notify = IW_CQ_COMPL_EVENT;
2110         ukcq->ops.iw_cq_request_notification(ukcq, cq_notify);
2111         return 0;
2112 }
2113
2114 /**
2115  * i40iw_port_immutable - return port's immutable data
2116  * @ibdev: ib dev struct
2117  * @port_num: port number
2118  * @immutable: immutable data for the port return
2119  */
2120 static int i40iw_port_immutable(struct ib_device *ibdev, u8 port_num,
2121                                 struct ib_port_immutable *immutable)
2122 {
2123         struct ib_port_attr attr;
2124         int err;
2125
2126         err = i40iw_query_port(ibdev, port_num, &attr);
2127
2128         if (err)
2129                 return err;
2130
2131         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2132         immutable->gid_tbl_len = attr.gid_tbl_len;
2133         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
2134
2135         return 0;
2136 }
2137
2138 /**
2139  * i40iw_get_protocol_stats - Populates the rdma_stats structure
2140  * @ibdev: ib dev struct
2141  * @stats: iw protocol stats struct
2142  */
2143 static int i40iw_get_protocol_stats(struct ib_device *ibdev,
2144                                     union rdma_protocol_stats *stats)
2145 {
2146         struct i40iw_device *iwdev = to_iwdev(ibdev);
2147         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
2148         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
2149         struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats;
2150         struct timespec curr_time;
2151         static struct timespec last_rd_time = {0, 0};
2152         enum i40iw_status_code status = 0;
2153         unsigned long flags;
2154
2155         curr_time = current_kernel_time();
2156         memset(stats, 0, sizeof(*stats));
2157
2158         if (dev->is_pf) {
2159                 spin_lock_irqsave(&devstat->stats_lock, flags);
2160                 devstat->ops.iw_hw_stat_read_all(devstat,
2161                         &devstat->hw_stats);
2162                 spin_unlock_irqrestore(&devstat->stats_lock, flags);
2163         } else {
2164                 if (((u64)curr_time.tv_sec - (u64)last_rd_time.tv_sec) > 1)
2165                         status = i40iw_vchnl_vf_get_pe_stats(dev,
2166                                                              &devstat->hw_stats);
2167
2168                 if (status)
2169                         return -ENOSYS;
2170         }
2171
2172         stats->iw.ipInReceives = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXPKTS] +
2173                                  hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXPKTS];
2174         stats->iw.ipInTruncatedPkts = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4RXTRUNC] +
2175                                       hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6RXTRUNC];
2176         stats->iw.ipInDiscards = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4RXDISCARD] +
2177                                  hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6RXDISCARD];
2178         stats->iw.ipOutNoRoutes = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4TXNOROUTE] +
2179                                   hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6TXNOROUTE];
2180         stats->iw.ipReasmReqds = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXFRAGS] +
2181                                  hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXFRAGS];
2182         stats->iw.ipFragCreates = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4TXFRAGS] +
2183                                   hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6TXFRAGS];
2184         stats->iw.ipInMcastPkts = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXMCPKTS] +
2185                                   hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXMCPKTS];
2186         stats->iw.ipOutMcastPkts = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4TXMCPKTS] +
2187                                    hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6TXMCPKTS];
2188         stats->iw.tcpOutSegs = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_TCPTXSEG];
2189         stats->iw.tcpInSegs = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_TCPRXSEGS];
2190         stats->iw.tcpRetransSegs = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_TCPRTXSEG];
2191
2192         last_rd_time = curr_time;
2193         return 0;
2194 }
2195
2196 /**
2197  * i40iw_query_gid - Query port GID
2198  * @ibdev: device pointer from stack
2199  * @port: port number
2200  * @index: Entry index
2201  * @gid: Global ID
2202  */
2203 static int i40iw_query_gid(struct ib_device *ibdev,
2204                            u8 port,
2205                            int index,
2206                            union ib_gid *gid)
2207 {
2208         struct i40iw_device *iwdev = to_iwdev(ibdev);
2209
2210         memset(gid->raw, 0, sizeof(gid->raw));
2211         ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
2212         return 0;
2213 }
2214
2215 /**
2216  * i40iw_modify_port  Modify port properties
2217  * @ibdev: device pointer from stack
2218  * @port: port number
2219  * @port_modify_mask: mask for port modifications
2220  * @props: port properties
2221  */
2222 static int i40iw_modify_port(struct ib_device *ibdev,
2223                              u8 port,
2224                              int port_modify_mask,
2225                              struct ib_port_modify *props)
2226 {
2227         return 0;
2228 }
2229
2230 /**
2231  * i40iw_query_pkey - Query partition key
2232  * @ibdev: device pointer from stack
2233  * @port: port number
2234  * @index: index of pkey
2235  * @pkey: pointer to store the pkey
2236  */
2237 static int i40iw_query_pkey(struct ib_device *ibdev,
2238                             u8 port,
2239                             u16 index,
2240                             u16 *pkey)
2241 {
2242         *pkey = 0;
2243         return 0;
2244 }
2245
2246 /**
2247  * i40iw_create_ah - create address handle
2248  * @ibpd: ptr of pd
2249  * @ah_attr: address handle attributes
2250  */
2251 static struct ib_ah *i40iw_create_ah(struct ib_pd *ibpd,
2252                                      struct ib_ah_attr *attr)
2253 {
2254         return ERR_PTR(-ENOSYS);
2255 }
2256
2257 /**
2258  * i40iw_destroy_ah - Destroy address handle
2259  * @ah: pointer to address handle
2260  */
2261 static int i40iw_destroy_ah(struct ib_ah *ah)
2262 {
2263         return -ENOSYS;
2264 }
2265
2266 /**
2267  * i40iw_init_rdma_device - initialization of iwarp device
2268  * @iwdev: iwarp device
2269  */
2270 static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev)
2271 {
2272         struct i40iw_ib_device *iwibdev;
2273         struct net_device *netdev = iwdev->netdev;
2274         struct pci_dev *pcidev = (struct pci_dev *)iwdev->hw.dev_context;
2275
2276         iwibdev = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev));
2277         if (!iwibdev) {
2278                 i40iw_pr_err("iwdev == NULL\n");
2279                 return NULL;
2280         }
2281         strlcpy(iwibdev->ibdev.name, "i40iw%d", IB_DEVICE_NAME_MAX);
2282         iwibdev->ibdev.owner = THIS_MODULE;
2283         iwdev->iwibdev = iwibdev;
2284         iwibdev->iwdev = iwdev;
2285
2286         iwibdev->ibdev.node_type = RDMA_NODE_RNIC;
2287         ether_addr_copy((u8 *)&iwibdev->ibdev.node_guid, netdev->dev_addr);
2288
2289         iwibdev->ibdev.uverbs_cmd_mask =
2290             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2291             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2292             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2293             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2294             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2295             (1ull << IB_USER_VERBS_CMD_REG_MR) |
2296             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2297             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2298             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2299             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2300             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
2301             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2302             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2303             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2304             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
2305             (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
2306             (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
2307             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2308             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
2309             (1ull << IB_USER_VERBS_CMD_POST_SEND);
2310         iwibdev->ibdev.phys_port_cnt = 1;
2311         iwibdev->ibdev.num_comp_vectors = 1;
2312         iwibdev->ibdev.dma_device = &pcidev->dev;
2313         iwibdev->ibdev.dev.parent = &pcidev->dev;
2314         iwibdev->ibdev.query_port = i40iw_query_port;
2315         iwibdev->ibdev.modify_port = i40iw_modify_port;
2316         iwibdev->ibdev.query_pkey = i40iw_query_pkey;
2317         iwibdev->ibdev.query_gid = i40iw_query_gid;
2318         iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext;
2319         iwibdev->ibdev.dealloc_ucontext = i40iw_dealloc_ucontext;
2320         iwibdev->ibdev.mmap = i40iw_mmap;
2321         iwibdev->ibdev.alloc_pd = i40iw_alloc_pd;
2322         iwibdev->ibdev.dealloc_pd = i40iw_dealloc_pd;
2323         iwibdev->ibdev.create_qp = i40iw_create_qp;
2324         iwibdev->ibdev.modify_qp = i40iw_modify_qp;
2325         iwibdev->ibdev.query_qp = i40iw_query_qp;
2326         iwibdev->ibdev.destroy_qp = i40iw_destroy_qp;
2327         iwibdev->ibdev.create_cq = i40iw_create_cq;
2328         iwibdev->ibdev.destroy_cq = i40iw_destroy_cq;
2329         iwibdev->ibdev.get_dma_mr = i40iw_get_dma_mr;
2330         iwibdev->ibdev.reg_user_mr = i40iw_reg_user_mr;
2331         iwibdev->ibdev.dereg_mr = i40iw_dereg_mr;
2332         iwibdev->ibdev.get_protocol_stats = i40iw_get_protocol_stats;
2333         iwibdev->ibdev.query_device = i40iw_query_device;
2334         iwibdev->ibdev.create_ah = i40iw_create_ah;
2335         iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
2336         iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
2337         if (!iwibdev->ibdev.iwcm) {
2338                 ib_dealloc_device(&iwibdev->ibdev);
2339                 i40iw_pr_err("iwcm == NULL\n");
2340                 return NULL;
2341         }
2342
2343         iwibdev->ibdev.iwcm->add_ref = i40iw_add_ref;
2344         iwibdev->ibdev.iwcm->rem_ref = i40iw_rem_ref;
2345         iwibdev->ibdev.iwcm->get_qp = i40iw_get_qp;
2346         iwibdev->ibdev.iwcm->connect = i40iw_connect;
2347         iwibdev->ibdev.iwcm->accept = i40iw_accept;
2348         iwibdev->ibdev.iwcm->reject = i40iw_reject;
2349         iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen;
2350         iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen;
2351         memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name,
2352                sizeof(iwibdev->ibdev.iwcm->ifname));
2353         iwibdev->ibdev.get_port_immutable   = i40iw_port_immutable;
2354         iwibdev->ibdev.poll_cq = i40iw_poll_cq;
2355         iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq;
2356         iwibdev->ibdev.post_send = i40iw_post_send;
2357         iwibdev->ibdev.post_recv = i40iw_post_recv;
2358
2359         return iwibdev;
2360 }
2361
2362 /**
2363  * i40iw_port_ibevent - indicate port event
2364  * @iwdev: iwarp device
2365  */
2366 void i40iw_port_ibevent(struct i40iw_device *iwdev)
2367 {
2368         struct i40iw_ib_device *iwibdev = iwdev->iwibdev;
2369         struct ib_event event;
2370
2371         event.device = &iwibdev->ibdev;
2372         event.element.port_num = 1;
2373         event.event = iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2374         ib_dispatch_event(&event);
2375 }
2376
2377 /**
2378  * i40iw_unregister_rdma_device - unregister of iwarp from IB
2379  * @iwibdev: rdma device ptr
2380  */
2381 static void i40iw_unregister_rdma_device(struct i40iw_ib_device *iwibdev)
2382 {
2383         int i;
2384
2385         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i)
2386                 device_remove_file(&iwibdev->ibdev.dev,
2387                                    i40iw_dev_attributes[i]);
2388         ib_unregister_device(&iwibdev->ibdev);
2389 }
2390
2391 /**
2392  * i40iw_destroy_rdma_device - destroy rdma device and free resources
2393  * @iwibdev: IB device ptr
2394  */
2395 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev)
2396 {
2397         if (!iwibdev)
2398                 return;
2399
2400         i40iw_unregister_rdma_device(iwibdev);
2401         kfree(iwibdev->ibdev.iwcm);
2402         iwibdev->ibdev.iwcm = NULL;
2403         ib_dealloc_device(&iwibdev->ibdev);
2404 }
2405
2406 /**
2407  * i40iw_register_rdma_device - register iwarp device to IB
2408  * @iwdev: iwarp device
2409  */
2410 int i40iw_register_rdma_device(struct i40iw_device *iwdev)
2411 {
2412         int i, ret;
2413         struct i40iw_ib_device *iwibdev;
2414
2415         iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
2416         if (!iwdev->iwibdev)
2417                 return -ENOSYS;
2418         iwibdev = iwdev->iwibdev;
2419
2420         ret = ib_register_device(&iwibdev->ibdev, NULL);
2421         if (ret)
2422                 goto error;
2423
2424         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) {
2425                 ret =
2426                     device_create_file(&iwibdev->ibdev.dev,
2427                                        i40iw_dev_attributes[i]);
2428                 if (ret) {
2429                         while (i > 0) {
2430                                 i--;
2431                                 device_remove_file(&iwibdev->ibdev.dev, i40iw_dev_attributes[i]);
2432                         }
2433                         ib_unregister_device(&iwibdev->ibdev);
2434                         goto error;
2435                 }
2436         }
2437         return 0;
2438 error:
2439         kfree(iwdev->iwibdev->ibdev.iwcm);
2440         iwdev->iwibdev->ibdev.iwcm = NULL;
2441         ib_dealloc_device(&iwdev->iwibdev->ibdev);
2442         return -ENOSYS;
2443 }