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->ldev->pcidev->vendor;
  67         props->vendor_part_id = iwdev->ldev->pcidev->device;
  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 = I40IW_MAX_SGE_RD;
  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         props->max_fast_reg_page_list_len = I40IW_MAX_PAGES_PER_FMR;
  83         return 0;
  84 }
  85
  86 /**
  87  * i40iw_query_port - get port attrubutes
  88  * @ibdev: device pointer from stack
  89  * @port: port number for query
  90  * @props: returning device attributes
  91  */
  92 static int i40iw_query_port(struct ib_device *ibdev,
  93                             u8 port,
  94                             struct ib_port_attr *props)
  95 {
  96         struct i40iw_device *iwdev = to_iwdev(ibdev);
  97         struct net_device *netdev = iwdev->netdev;
  98
  99         memset(props, 0, sizeof(*props));
 100
 101         props->max_mtu = IB_MTU_4096;
 102         if (netdev->mtu >= 4096)
 103                 props->active_mtu = IB_MTU_4096;
 104         else if (netdev->mtu >= 2048)
 105                 props->active_mtu = IB_MTU_2048;
 106         else if (netdev->mtu >= 1024)
 107                 props->active_mtu = IB_MTU_1024;
 108         else if (netdev->mtu >= 512)
 109                 props->active_mtu = IB_MTU_512;
 110         else
 111                 props->active_mtu = IB_MTU_256;
 112
 113         props->lid = 1;
 114         if (netif_carrier_ok(iwdev->netdev))
 115                 props->state = IB_PORT_ACTIVE;
 116         else
 117                 props->state = IB_PORT_DOWN;
 118         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 119                 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 120         props->gid_tbl_len = 1;
 121         props->pkey_tbl_len = 1;
 122         props->active_width = IB_WIDTH_4X;
 123         props->active_speed = 1;
 124         props->max_msg_sz = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
 125         return 0;
 126 }
 127
 128 /**
 129  * i40iw_alloc_ucontext - Allocate the user context data structure
 130  * @ibdev: device pointer from stack
 131  * @udata: user data
 132  *
 133  * This keeps track of all objects associated with a particular
 134  * user-mode client.
 135  */
 136 static struct ib_ucontext *i40iw_alloc_ucontext(struct ib_device *ibdev,
 137                                                 struct ib_udata *udata)
 138 {
 139         struct i40iw_device *iwdev = to_iwdev(ibdev);
 140         struct i40iw_alloc_ucontext_req req;
 141         struct i40iw_alloc_ucontext_resp uresp;
 142         struct i40iw_ucontext *ucontext;
 143
 144         if (ib_copy_from_udata(&req, udata, sizeof(req)))
 145                 return ERR_PTR(-EINVAL);
 146
 147         if (req.userspace_ver != I40IW_ABI_USERSPACE_VER) {
 148                 i40iw_pr_err("Invalid userspace driver version detected. Detected version %d, should be %d\n",
 149                              req.userspace_ver, I40IW_ABI_USERSPACE_VER);
 150                 return ERR_PTR(-EINVAL);
 151         }
 152
 153         memset(&uresp, 0, sizeof(uresp));
 154         uresp.max_qps = iwdev->max_qp;
 155         uresp.max_pds = iwdev->max_pd;
 156         uresp.wq_size = iwdev->max_qp_wr * 2;
 157         uresp.kernel_ver = I40IW_ABI_KERNEL_VER;
 158
 159         ucontext = kzalloc(sizeof(*ucontext), GFP_KERNEL);
 160         if (!ucontext)
 161                 return ERR_PTR(-ENOMEM);
 162
 163         ucontext->iwdev = iwdev;
 164
 165         if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 166                 kfree(ucontext);
 167                 return ERR_PTR(-EFAULT);
 168         }
 169
 170         INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
 171         spin_lock_init(&ucontext->cq_reg_mem_list_lock);
 172         INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
 173         spin_lock_init(&ucontext->qp_reg_mem_list_lock);
 174
 175         return &ucontext->ibucontext;
 176 }
 177
 178 /**
 179  * i40iw_dealloc_ucontext - deallocate the user context data structure
 180  * @context: user context created during alloc
 181  */
 182 static int i40iw_dealloc_ucontext(struct ib_ucontext *context)
 183 {
 184         struct i40iw_ucontext *ucontext = to_ucontext(context);
 185         unsigned long flags;
 186
 187         spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
 188         if (!list_empty(&ucontext->cq_reg_mem_list)) {
 189                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 190                 return -EBUSY;
 191         }
 192         spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 193         spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
 194         if (!list_empty(&ucontext->qp_reg_mem_list)) {
 195                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 196                 return -EBUSY;
 197         }
 198         spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
 199
 200         kfree(ucontext);
 201         return 0;
 202 }
 203
 204 /**
 205  * i40iw_mmap - user memory map
 206  * @context: context created during alloc
 207  * @vma: kernel info for user memory map
 208  */
 209 static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 210 {
 211         struct i40iw_ucontext *ucontext;
 212         u64 db_addr_offset;
 213         u64 push_offset;
 214
 215         ucontext = to_ucontext(context);
 216         if (ucontext->iwdev->sc_dev.is_pf) {
 217                 db_addr_offset = I40IW_DB_ADDR_OFFSET;
 218                 push_offset = I40IW_PUSH_OFFSET;
 219                 if (vma->vm_pgoff)
 220                         vma->vm_pgoff += I40IW_PF_FIRST_PUSH_PAGE_INDEX - 1;
 221         } else {
 222                 db_addr_offset = I40IW_VF_DB_ADDR_OFFSET;
 223                 push_offset = I40IW_VF_PUSH_OFFSET;
 224                 if (vma->vm_pgoff)
 225                         vma->vm_pgoff += I40IW_VF_FIRST_PUSH_PAGE_INDEX - 1;
 226         }
 227
 228         vma->vm_pgoff += db_addr_offset >> PAGE_SHIFT;
 229
 230         if (vma->vm_pgoff == (db_addr_offset >> PAGE_SHIFT)) {
 231                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 232                 vma->vm_private_data = ucontext;
 233         } else {
 234                 if ((vma->vm_pgoff - (push_offset >> PAGE_SHIFT)) % 2)
 235                         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 236                 else
 237                         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 238         }
 239
 240         if (io_remap_pfn_range(vma, vma->vm_start,
 241                                vma->vm_pgoff + (pci_resource_start(ucontext->iwdev->ldev->pcidev, 0) >> PAGE_SHIFT),
 242                                PAGE_SIZE, vma->vm_page_prot))
 243                 return -EAGAIN;
 244
 245         return 0;
 246 }
 247
 248 /**
 249  * i40iw_alloc_push_page - allocate a push page for qp
 250  * @iwdev: iwarp device
 251  * @qp: hardware control qp
 252  */
 253 static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 254 {
 255         struct i40iw_cqp_request *cqp_request;
 256         struct cqp_commands_info *cqp_info;
 257         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 258         enum i40iw_status_code status;
 259
 260         if (qp->push_idx != I40IW_INVALID_PUSH_PAGE_INDEX)
 261                 return;
 262
 263         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 264         if (!cqp_request)
 265                 return;
 266
 267         atomic_inc(&cqp_request->refcount);
 268
 269         cqp_info = &cqp_request->info;
 270         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 271         cqp_info->post_sq = 1;
 272
 273         cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
 274         cqp_info->in.u.manage_push_page.info.free_page = 0;
 275         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 276         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 277
 278         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 279         if (!status)
 280                 qp->push_idx = cqp_request->compl_info.op_ret_val;
 281         else
 282                 i40iw_pr_err("CQP-OP Push page fail");
 283         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 284 }
 285
 286 /**
 287  * i40iw_dealloc_push_page - free a push page for qp
 288  * @iwdev: iwarp device
 289  * @qp: hardware control qp
 290  */
 291 static void i40iw_dealloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
 292 {
 293         struct i40iw_cqp_request *cqp_request;
 294         struct cqp_commands_info *cqp_info;
 295         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 296         enum i40iw_status_code status;
 297
 298         if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX)
 299                 return;
 300
 301         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 302         if (!cqp_request)
 303                 return;
 304
 305         cqp_info = &cqp_request->info;
 306         cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
 307         cqp_info->post_sq = 1;
 308
 309         cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
 310         cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
 311         cqp_info->in.u.manage_push_page.info.free_page = 1;
 312         cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
 313         cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
 314
 315         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 316         if (!status)
 317                 qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 318         else
 319                 i40iw_pr_err("CQP-OP Push page fail");
 320 }
 321
 322 /**
 323  * i40iw_alloc_pd - allocate protection domain
 324  * @ibdev: device pointer from stack
 325  * @context: user context created during alloc
 326  * @udata: user data
 327  */
 328 static struct ib_pd *i40iw_alloc_pd(struct ib_device *ibdev,
 329                                     struct ib_ucontext *context,
 330                                     struct ib_udata *udata)
 331 {
 332         struct i40iw_pd *iwpd;
 333         struct i40iw_device *iwdev = to_iwdev(ibdev);
 334         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 335         struct i40iw_alloc_pd_resp uresp;
 336         struct i40iw_sc_pd *sc_pd;
 337         u32 pd_id = 0;
 338         int err;
 339
 340         err = i40iw_alloc_resource(iwdev, iwdev->allocated_pds,
 341                                    iwdev->max_pd, &pd_id, &iwdev->next_pd);
 342         if (err) {
 343                 i40iw_pr_err("alloc resource failed\n");
 344                 return ERR_PTR(err);
 345         }
 346
 347         iwpd = kzalloc(sizeof(*iwpd), GFP_KERNEL);
 348         if (!iwpd) {
 349                 err = -ENOMEM;
 350                 goto free_res;
 351         }
 352
 353         sc_pd = &iwpd->sc_pd;
 354         dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id);
 355
 356         if (context) {
 357                 memset(&uresp, 0, sizeof(uresp));
 358                 uresp.pd_id = pd_id;
 359                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 360                         err = -EFAULT;
 361                         goto error;
 362                 }
 363         }
 364
 365         i40iw_add_pdusecount(iwpd);
 366         return &iwpd->ibpd;
 367 error:
 368         kfree(iwpd);
 369 free_res:
 370         i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id);
 371         return ERR_PTR(err);
 372 }
 373
 374 /**
 375  * i40iw_dealloc_pd - deallocate pd
 376  * @ibpd: ptr of pd to be deallocated
 377  */
 378 static int i40iw_dealloc_pd(struct ib_pd *ibpd)
 379 {
 380         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 381         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 382
 383         i40iw_rem_pdusecount(iwpd, iwdev);
 384         return 0;
 385 }
 386
 387 /**
 388  * i40iw_qp_roundup - return round up qp ring size
 389  * @wr_ring_size: ring size to round up
 390  */
 391 static int i40iw_qp_roundup(u32 wr_ring_size)
 392 {
 393         int scount = 1;
 394
 395         if (wr_ring_size < I40IWQP_SW_MIN_WQSIZE)
 396                 wr_ring_size = I40IWQP_SW_MIN_WQSIZE;
 397
 398         for (wr_ring_size--; scount <= 16; scount *= 2)
 399                 wr_ring_size |= wr_ring_size >> scount;
 400         return ++wr_ring_size;
 401 }
 402
 403 /**
 404  * i40iw_get_pbl - Retrieve pbl from a list given a virtual
 405  * address
 406  * @va: user virtual address
 407  * @pbl_list: pbl list to search in (QP's or CQ's)
 408  */
 409 static struct i40iw_pbl *i40iw_get_pbl(unsigned long va,
 410                                        struct list_head *pbl_list)
 411 {
 412         struct i40iw_pbl *iwpbl;
 413
 414         list_for_each_entry(iwpbl, pbl_list, list) {
 415                 if (iwpbl->user_base == va) {
 416                         list_del(&iwpbl->list);
 417                         return iwpbl;
 418                 }
 419         }
 420         return NULL;
 421 }
 422
 423 /**
 424  * i40iw_free_qp_resources - free up memory resources for qp
 425  * @iwdev: iwarp device
 426  * @iwqp: qp ptr (user or kernel)
 427  * @qp_num: qp number assigned
 428  */
 429 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
 430                              struct i40iw_qp *iwqp,
 431                              u32 qp_num)
 432 {
 433         i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
 434         if (qp_num)
 435                 i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
 436         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->q2_ctx_mem);
 437         i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->kqp.dma_mem);
 438         kfree(iwqp->kqp.wrid_mem);
 439         iwqp->kqp.wrid_mem = NULL;
 440         kfree(iwqp->allocated_buffer);
 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         sq_size = i40iw_qp_roundup(ukinfo->sq_size + 1);
 525         rq_size = i40iw_qp_roundup(ukinfo->rq_size + 1);
 526
 527         status = i40iw_get_wqe_shift(sq_size, ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift);
 528         if (!status)
 529                 status = i40iw_get_wqe_shift(rq_size, ukinfo->max_rq_frag_cnt, 0, &rqshift);
 530
 531         if (status)
 532                 return -ENOMEM;
 533
 534         sqdepth = sq_size << sqshift;
 535         rqdepth = rq_size << rqshift;
 536
 537         size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3);
 538         iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL);
 539
 540         ukinfo->sq_wrtrk_array = (struct i40iw_sq_uk_wr_trk_info *)iwqp->kqp.wrid_mem;
 541         if (!ukinfo->sq_wrtrk_array)
 542                 return -ENOMEM;
 543
 544         ukinfo->rq_wrid_array = (u64 *)&ukinfo->sq_wrtrk_array[sqdepth];
 545
 546         size = (sqdepth + rqdepth) * I40IW_QP_WQE_MIN_SIZE;
 547         size += (I40IW_SHADOW_AREA_SIZE << 3);
 548
 549         status = i40iw_allocate_dma_mem(iwdev->sc_dev.hw, mem, size, 256);
 550         if (status) {
 551                 kfree(ukinfo->sq_wrtrk_array);
 552                 ukinfo->sq_wrtrk_array = NULL;
 553                 return -ENOMEM;
 554         }
 555
 556         ukinfo->sq = mem->va;
 557         info->sq_pa = mem->pa;
 558
 559         ukinfo->rq = &ukinfo->sq[sqdepth];
 560         info->rq_pa = info->sq_pa + (sqdepth * I40IW_QP_WQE_MIN_SIZE);
 561
 562         ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
 563         info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE);
 564
 565         ukinfo->sq_size = sq_size;
 566         ukinfo->rq_size = rq_size;
 567         ukinfo->qp_id = iwqp->ibqp.qp_num;
 568         return 0;
 569 }
 570
 571 /**
 572  * i40iw_create_qp - create qp
 573  * @ibpd: ptr of pd
 574  * @init_attr: attributes for qp
 575  * @udata: user data for create qp
 576  */
 577 static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
 578                                      struct ib_qp_init_attr *init_attr,
 579                                      struct ib_udata *udata)
 580 {
 581         struct i40iw_pd *iwpd = to_iwpd(ibpd);
 582         struct i40iw_device *iwdev = to_iwdev(ibpd->device);
 583         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 584         struct i40iw_qp *iwqp;
 585         struct i40iw_ucontext *ucontext;
 586         struct i40iw_create_qp_req req;
 587         struct i40iw_create_qp_resp uresp;
 588         u32 qp_num = 0;
 589         void *mem;
 590         enum i40iw_status_code ret;
 591         int err_code;
 592         int sq_size;
 593         int rq_size;
 594         struct i40iw_sc_qp *qp;
 595         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 596         struct i40iw_qp_init_info init_info;
 597         struct i40iw_create_qp_info *qp_info;
 598         struct i40iw_cqp_request *cqp_request;
 599         struct cqp_commands_info *cqp_info;
 600
 601         struct i40iw_qp_host_ctx_info *ctx_info;
 602         struct i40iwarp_offload_info *iwarp_info;
 603         unsigned long flags;
 604
 605         if (init_attr->create_flags)
 606                 return ERR_PTR(-EINVAL);
 607         if (init_attr->cap.max_inline_data > I40IW_MAX_INLINE_DATA_SIZE)
 608                 init_attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 609
 610         if (init_attr->cap.max_send_sge > I40IW_MAX_WQ_FRAGMENT_COUNT)
 611                 init_attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
 612
 613         memset(&init_info, 0, sizeof(init_info));
 614
 615         sq_size = init_attr->cap.max_send_wr;
 616         rq_size = init_attr->cap.max_recv_wr;
 617
 618         init_info.qp_uk_init_info.sq_size = sq_size;
 619         init_info.qp_uk_init_info.rq_size = rq_size;
 620         init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
 621         init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
 622         init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data;
 623
 624         mem = kzalloc(sizeof(*iwqp), GFP_KERNEL);
 625         if (!mem)
 626                 return ERR_PTR(-ENOMEM);
 627
 628         iwqp = (struct i40iw_qp *)mem;
 629         qp = &iwqp->sc_qp;
 630         qp->back_qp = (void *)iwqp;
 631         qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
 632
 633         iwqp->ctx_info.iwarp_info = &iwqp->iwarp_info;
 634
 635         if (i40iw_allocate_dma_mem(dev->hw,
 636                                    &iwqp->q2_ctx_mem,
 637                                    I40IW_Q2_BUFFER_SIZE + I40IW_QP_CTX_SIZE,
 638                                    256)) {
 639                 i40iw_pr_err("dma_mem failed\n");
 640                 err_code = -ENOMEM;
 641                 goto error;
 642         }
 643
 644         init_info.q2 = iwqp->q2_ctx_mem.va;
 645         init_info.q2_pa = iwqp->q2_ctx_mem.pa;
 646
 647         init_info.host_ctx = (void *)init_info.q2 + I40IW_Q2_BUFFER_SIZE;
 648         init_info.host_ctx_pa = init_info.q2_pa + I40IW_Q2_BUFFER_SIZE;
 649
 650         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_qps, iwdev->max_qp,
 651                                         &qp_num, &iwdev->next_qp);
 652         if (err_code) {
 653                 i40iw_pr_err("qp resource\n");
 654                 goto error;
 655         }
 656
 657         iwqp->allocated_buffer = mem;
 658         iwqp->iwdev = iwdev;
 659         iwqp->iwpd = iwpd;
 660         iwqp->ibqp.qp_num = qp_num;
 661         qp = &iwqp->sc_qp;
 662         iwqp->iwscq = to_iwcq(init_attr->send_cq);
 663         iwqp->iwrcq = to_iwcq(init_attr->recv_cq);
 664
 665         iwqp->host_ctx.va = init_info.host_ctx;
 666         iwqp->host_ctx.pa = init_info.host_ctx_pa;
 667         iwqp->host_ctx.size = I40IW_QP_CTX_SIZE;
 668
 669         init_info.pd = &iwpd->sc_pd;
 670         init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num;
 671         iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
 672
 673         if (init_attr->qp_type != IB_QPT_RC) {
 674                 err_code = -EINVAL;
 675                 goto error;
 676         }
 677         if (iwdev->push_mode)
 678                 i40iw_alloc_push_page(iwdev, qp);
 679         if (udata) {
 680                 err_code = ib_copy_from_udata(&req, udata, sizeof(req));
 681                 if (err_code) {
 682                         i40iw_pr_err("ib_copy_from_data\n");
 683                         goto error;
 684                 }
 685                 iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
 686                 if (ibpd->uobject && ibpd->uobject->context) {
 687                         iwqp->user_mode = 1;
 688                         ucontext = to_ucontext(ibpd->uobject->context);
 689
 690                         if (req.user_wqe_buffers) {
 691                                 spin_lock_irqsave(
 692                                     &ucontext->qp_reg_mem_list_lock, flags);
 693                                 iwqp->iwpbl = i40iw_get_pbl(
 694                                     (unsigned long)req.user_wqe_buffers,
 695                                     &ucontext->qp_reg_mem_list);
 696                                 spin_unlock_irqrestore(
 697                                     &ucontext->qp_reg_mem_list_lock, flags);
 698
 699                                 if (!iwqp->iwpbl) {
 700                                         err_code = -ENODATA;
 701                                         i40iw_pr_err("no pbl info\n");
 702                                         goto error;
 703                                 }
 704                         }
 705                 }
 706                 err_code = i40iw_setup_virt_qp(iwdev, iwqp, &init_info);
 707         } else {
 708                 err_code = i40iw_setup_kmode_qp(iwdev, iwqp, &init_info);
 709         }
 710
 711         if (err_code) {
 712                 i40iw_pr_err("setup qp failed\n");
 713                 goto error;
 714         }
 715
 716         init_info.type = I40IW_QP_TYPE_IWARP;
 717         ret = dev->iw_priv_qp_ops->qp_init(qp, &init_info);
 718         if (ret) {
 719                 err_code = -EPROTO;
 720                 i40iw_pr_err("qp_init fail\n");
 721                 goto error;
 722         }
 723         ctx_info = &iwqp->ctx_info;
 724         iwarp_info = &iwqp->iwarp_info;
 725         iwarp_info->rd_enable = true;
 726         iwarp_info->wr_rdresp_en = true;
 727         if (!iwqp->user_mode) {
 728                 iwarp_info->fast_reg_en = true;
 729                 iwarp_info->priv_mode_en = true;
 730         }
 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         init_completion(&iwqp->sq_drained);
 792         init_completion(&iwqp->rq_drained);
 793
 794         return &iwqp->ibqp;
 795 error:
 796         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 797         return ERR_PTR(err_code);
 798 }
 799
 800 /**
 801  * i40iw_query - query qp attributes
 802  * @ibqp: qp pointer
 803  * @attr: attributes pointer
 804  * @attr_mask: Not used
 805  * @init_attr: qp attributes to return
 806  */
 807 static int i40iw_query_qp(struct ib_qp *ibqp,
 808                           struct ib_qp_attr *attr,
 809                           int attr_mask,
 810                           struct ib_qp_init_attr *init_attr)
 811 {
 812         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 813         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
 814
 815         attr->qp_access_flags = 0;
 816         attr->cap.max_send_wr = qp->qp_uk.sq_size;
 817         attr->cap.max_recv_wr = qp->qp_uk.rq_size;
 818         attr->cap.max_recv_sge = 1;
 819         attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
 820         init_attr->event_handler = iwqp->ibqp.event_handler;
 821         init_attr->qp_context = iwqp->ibqp.qp_context;
 822         init_attr->send_cq = iwqp->ibqp.send_cq;
 823         init_attr->recv_cq = iwqp->ibqp.recv_cq;
 824         init_attr->srq = iwqp->ibqp.srq;
 825         init_attr->cap = attr->cap;
 826         return 0;
 827 }
 828
 829 /**
 830  * i40iw_hw_modify_qp - setup cqp for modify qp
 831  * @iwdev: iwarp device
 832  * @iwqp: qp ptr (user or kernel)
 833  * @info: info for modify qp
 834  * @wait: flag to wait or not for modify qp completion
 835  */
 836 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
 837                         struct i40iw_modify_qp_info *info, bool wait)
 838 {
 839         enum i40iw_status_code status;
 840         struct i40iw_cqp_request *cqp_request;
 841         struct cqp_commands_info *cqp_info;
 842         struct i40iw_modify_qp_info *m_info;
 843
 844         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait);
 845         if (!cqp_request)
 846                 return;
 847
 848         cqp_info = &cqp_request->info;
 849         m_info = &cqp_info->in.u.qp_modify.info;
 850         memcpy(m_info, info, sizeof(*m_info));
 851         cqp_info->cqp_cmd = OP_QP_MODIFY;
 852         cqp_info->post_sq = 1;
 853         cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
 854         cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
 855         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 856         if (status)
 857                 i40iw_pr_err("CQP-OP Modify QP fail");
 858 }
 859
 860 /**
 861  * i40iw_modify_qp - modify qp request
 862  * @ibqp: qp's pointer for modify
 863  * @attr: access attributes
 864  * @attr_mask: state mask
 865  * @udata: user data
 866  */
 867 int i40iw_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 868                     int attr_mask, struct ib_udata *udata)
 869 {
 870         struct i40iw_qp *iwqp = to_iwqp(ibqp);
 871         struct i40iw_device *iwdev = iwqp->iwdev;
 872         struct i40iw_qp_host_ctx_info *ctx_info;
 873         struct i40iwarp_offload_info *iwarp_info;
 874         struct i40iw_modify_qp_info info;
 875         u8 issue_modify_qp = 0;
 876         u8 dont_wait = 0;
 877         u32 err;
 878         unsigned long flags;
 879
 880         memset(&info, 0, sizeof(info));
 881         ctx_info = &iwqp->ctx_info;
 882         iwarp_info = &iwqp->iwarp_info;
 883
 884         spin_lock_irqsave(&iwqp->lock, flags);
 885
 886         if (attr_mask & IB_QP_STATE) {
 887                 switch (attr->qp_state) {
 888                 case IB_QPS_INIT:
 889                 case IB_QPS_RTR:
 890                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_IDLE) {
 891                                 err = -EINVAL;
 892                                 goto exit;
 893                         }
 894                         if (iwqp->iwarp_state == I40IW_QP_STATE_INVALID) {
 895                                 info.next_iwarp_state = I40IW_QP_STATE_IDLE;
 896                                 issue_modify_qp = 1;
 897                         }
 898                         break;
 899                 case IB_QPS_RTS:
 900                         if ((iwqp->iwarp_state > (u32)I40IW_QP_STATE_RTS) ||
 901                             (!iwqp->cm_id)) {
 902                                 err = -EINVAL;
 903                                 goto exit;
 904                         }
 905
 906                         issue_modify_qp = 1;
 907                         iwqp->hw_tcp_state = I40IW_TCP_STATE_ESTABLISHED;
 908                         iwqp->hte_added = 1;
 909                         info.next_iwarp_state = I40IW_QP_STATE_RTS;
 910                         info.tcp_ctx_valid = true;
 911                         info.ord_valid = true;
 912                         info.arp_cache_idx_valid = true;
 913                         info.cq_num_valid = true;
 914                         break;
 915                 case IB_QPS_SQD:
 916                         if (iwqp->hw_iwarp_state > (u32)I40IW_QP_STATE_RTS) {
 917                                 err = 0;
 918                                 goto exit;
 919                         }
 920                         if ((iwqp->iwarp_state == (u32)I40IW_QP_STATE_CLOSING) ||
 921                             (iwqp->iwarp_state < (u32)I40IW_QP_STATE_RTS)) {
 922                                 err = 0;
 923                                 goto exit;
 924                         }
 925                         if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_CLOSING) {
 926                                 err = -EINVAL;
 927                                 goto exit;
 928                         }
 929                         info.next_iwarp_state = I40IW_QP_STATE_CLOSING;
 930                         issue_modify_qp = 1;
 931                         break;
 932                 case IB_QPS_SQE:
 933                         if (iwqp->iwarp_state >= (u32)I40IW_QP_STATE_TERMINATE) {
 934                                 err = -EINVAL;
 935                                 goto exit;
 936                         }
 937                         info.next_iwarp_state = I40IW_QP_STATE_TERMINATE;
 938                         issue_modify_qp = 1;
 939                         break;
 940                 case IB_QPS_ERR:
 941                 case IB_QPS_RESET:
 942                         if (iwqp->iwarp_state == (u32)I40IW_QP_STATE_ERROR) {
 943                                 err = -EINVAL;
 944                                 goto exit;
 945                         }
 946                         if (iwqp->sc_qp.term_flags)
 947                                 del_timer(&iwqp->terminate_timer);
 948                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 949                         if ((iwqp->hw_tcp_state > I40IW_TCP_STATE_CLOSED) &&
 950                             iwdev->iw_status &&
 951                             (iwqp->hw_tcp_state != I40IW_TCP_STATE_TIME_WAIT))
 952                                 info.reset_tcp_conn = true;
 953                         else
 954                                 dont_wait = 1;
 955                         issue_modify_qp = 1;
 956                         info.next_iwarp_state = I40IW_QP_STATE_ERROR;
 957                         break;
 958                 default:
 959                         err = -EINVAL;
 960                         goto exit;
 961                 }
 962
 963                 iwqp->ibqp_state = attr->qp_state;
 964
 965                 if (issue_modify_qp)
 966                         iwqp->iwarp_state = info.next_iwarp_state;
 967                 else
 968                         info.next_iwarp_state = iwqp->iwarp_state;
 969         }
 970         if (attr_mask & IB_QP_ACCESS_FLAGS) {
 971                 ctx_info->iwarp_info_valid = true;
 972                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
 973                         iwarp_info->wr_rdresp_en = true;
 974                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
 975                         iwarp_info->wr_rdresp_en = true;
 976                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
 977                         iwarp_info->rd_enable = true;
 978                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND)
 979                         iwarp_info->bind_en = true;
 980
 981                 if (iwqp->user_mode) {
 982                         iwarp_info->rd_enable = true;
 983                         iwarp_info->wr_rdresp_en = true;
 984                         iwarp_info->priv_mode_en = false;
 985                 }
 986         }
 987
 988         if (ctx_info->iwarp_info_valid) {
 989                 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 990                 int ret;
 991
 992                 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
 993                 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
 994                 ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
 995                                                      (u64 *)iwqp->host_ctx.va,
 996                                                      ctx_info);
 997                 if (ret) {
 998                         i40iw_pr_err("setting QP context\n");
 999                         err = -EINVAL;
1000                         goto exit;
1001                 }
1002         }
1003
1004         spin_unlock_irqrestore(&iwqp->lock, flags);
1005
1006         if (issue_modify_qp)
1007                 i40iw_hw_modify_qp(iwdev, iwqp, &info, true);
1008
1009         if (issue_modify_qp && (iwqp->ibqp_state > IB_QPS_RTS)) {
1010                 if (dont_wait) {
1011                         if (iwqp->cm_id && iwqp->hw_tcp_state) {
1012                                 spin_lock_irqsave(&iwqp->lock, flags);
1013                                 iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
1014                                 iwqp->last_aeq = I40IW_AE_RESET_SENT;
1015                                 spin_unlock_irqrestore(&iwqp->lock, flags);
1016                         }
1017                 }
1018         }
1019         return 0;
1020 exit:
1021         spin_unlock_irqrestore(&iwqp->lock, flags);
1022         return err;
1023 }
1024
1025 /**
1026  * cq_free_resources - free up recources for cq
1027  * @iwdev: iwarp device
1028  * @iwcq: cq ptr
1029  */
1030 static void cq_free_resources(struct i40iw_device *iwdev, struct i40iw_cq *iwcq)
1031 {
1032         struct i40iw_sc_cq *cq = &iwcq->sc_cq;
1033
1034         if (!iwcq->user_mode)
1035                 i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwcq->kmem);
1036         i40iw_free_resource(iwdev, iwdev->allocated_cqs, cq->cq_uk.cq_id);
1037 }
1038
1039 /**
1040  * cq_wq_destroy - send cq destroy cqp
1041  * @iwdev: iwarp device
1042  * @cq: hardware control cq
1043  */
1044 static void cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq)
1045 {
1046         enum i40iw_status_code status;
1047         struct i40iw_cqp_request *cqp_request;
1048         struct cqp_commands_info *cqp_info;
1049
1050         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1051         if (!cqp_request)
1052                 return;
1053
1054         cqp_info = &cqp_request->info;
1055
1056         cqp_info->cqp_cmd = OP_CQ_DESTROY;
1057         cqp_info->post_sq = 1;
1058         cqp_info->in.u.cq_destroy.cq = cq;
1059         cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
1060         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1061         if (status)
1062                 i40iw_pr_err("CQP-OP Destroy QP fail");
1063 }
1064
1065 /**
1066  * i40iw_destroy_cq - destroy cq
1067  * @ib_cq: cq pointer
1068  */
1069 static int i40iw_destroy_cq(struct ib_cq *ib_cq)
1070 {
1071         struct i40iw_cq *iwcq;
1072         struct i40iw_device *iwdev;
1073         struct i40iw_sc_cq *cq;
1074
1075         if (!ib_cq) {
1076                 i40iw_pr_err("ib_cq == NULL\n");
1077                 return 0;
1078         }
1079
1080         iwcq = to_iwcq(ib_cq);
1081         iwdev = to_iwdev(ib_cq->device);
1082         cq = &iwcq->sc_cq;
1083         cq_wq_destroy(iwdev, cq);
1084         cq_free_resources(iwdev, iwcq);
1085         kfree(iwcq);
1086         return 0;
1087 }
1088
1089 /**
1090  * i40iw_create_cq - create cq
1091  * @ibdev: device pointer from stack
1092  * @attr: attributes for cq
1093  * @context: user context created during alloc
1094  * @udata: user data
1095  */
1096 static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev,
1097                                      const struct ib_cq_init_attr *attr,
1098                                      struct ib_ucontext *context,
1099                                      struct ib_udata *udata)
1100 {
1101         struct i40iw_device *iwdev = to_iwdev(ibdev);
1102         struct i40iw_cq *iwcq;
1103         struct i40iw_pbl *iwpbl;
1104         u32 cq_num = 0;
1105         struct i40iw_sc_cq *cq;
1106         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1107         struct i40iw_cq_init_info info;
1108         enum i40iw_status_code status;
1109         struct i40iw_cqp_request *cqp_request;
1110         struct cqp_commands_info *cqp_info;
1111         struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
1112         unsigned long flags;
1113         int err_code;
1114         int entries = attr->cqe;
1115
1116         if (entries > iwdev->max_cqe)
1117                 return ERR_PTR(-EINVAL);
1118
1119         iwcq = kzalloc(sizeof(*iwcq), GFP_KERNEL);
1120         if (!iwcq)
1121                 return ERR_PTR(-ENOMEM);
1122
1123         memset(&info, 0, sizeof(info));
1124
1125         err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs,
1126                                         iwdev->max_cq, &cq_num,
1127                                         &iwdev->next_cq);
1128         if (err_code)
1129                 goto error;
1130
1131         cq = &iwcq->sc_cq;
1132         cq->back_cq = (void *)iwcq;
1133         spin_lock_init(&iwcq->lock);
1134
1135         info.dev = dev;
1136         ukinfo->cq_size = max(entries, 4);
1137         ukinfo->cq_id = cq_num;
1138         iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
1139         info.ceqe_mask = 0;
1140         info.ceq_id = 0;
1141         info.ceq_id_valid = true;
1142         info.ceqe_mask = 1;
1143         info.type = I40IW_CQ_TYPE_IWARP;
1144         if (context) {
1145                 struct i40iw_ucontext *ucontext;
1146                 struct i40iw_create_cq_req req;
1147                 struct i40iw_cq_mr *cqmr;
1148
1149                 memset(&req, 0, sizeof(req));
1150                 iwcq->user_mode = true;
1151                 ucontext = to_ucontext(context);
1152                 if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req)))
1153                         goto cq_free_resources;
1154
1155                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1156                 iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,
1157                                       &ucontext->cq_reg_mem_list);
1158                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1159                 if (!iwpbl) {
1160                         err_code = -EPROTO;
1161                         goto cq_free_resources;
1162                 }
1163
1164                 iwcq->iwpbl = iwpbl;
1165                 iwcq->cq_mem_size = 0;
1166                 cqmr = &iwpbl->cq_mr;
1167                 info.shadow_area_pa = cpu_to_le64(cqmr->shadow);
1168                 if (iwpbl->pbl_allocated) {
1169                         info.virtual_map = true;
1170                         info.pbl_chunk_size = 1;
1171                         info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
1172                 } else {
1173                         info.cq_base_pa = cqmr->cq_pbl.addr;
1174                 }
1175         } else {
1176                 /* Kmode allocations */
1177                 int rsize;
1178                 int shadow;
1179
1180                 rsize = info.cq_uk_init_info.cq_size * sizeof(struct i40iw_cqe);
1181                 rsize = round_up(rsize, 256);
1182                 shadow = I40IW_SHADOW_AREA_SIZE << 3;
1183                 status = i40iw_allocate_dma_mem(dev->hw, &iwcq->kmem,
1184                                                 rsize + shadow, 256);
1185                 if (status) {
1186                         err_code = -ENOMEM;
1187                         goto cq_free_resources;
1188                 }
1189                 ukinfo->cq_base = iwcq->kmem.va;
1190                 info.cq_base_pa = iwcq->kmem.pa;
1191                 info.shadow_area_pa = info.cq_base_pa + rsize;
1192                 ukinfo->shadow_area = iwcq->kmem.va + rsize;
1193         }
1194
1195         if (dev->iw_priv_cq_ops->cq_init(cq, &info)) {
1196                 i40iw_pr_err("init cq fail\n");
1197                 err_code = -EPROTO;
1198                 goto cq_free_resources;
1199         }
1200
1201         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1202         if (!cqp_request) {
1203                 err_code = -ENOMEM;
1204                 goto cq_free_resources;
1205         }
1206
1207         cqp_info = &cqp_request->info;
1208         cqp_info->cqp_cmd = OP_CQ_CREATE;
1209         cqp_info->post_sq = 1;
1210         cqp_info->in.u.cq_create.cq = cq;
1211         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1212         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1213         if (status) {
1214                 i40iw_pr_err("CQP-OP Create QP fail");
1215                 err_code = -EPROTO;
1216                 goto cq_free_resources;
1217         }
1218
1219         if (context) {
1220                 struct i40iw_create_cq_resp resp;
1221
1222                 memset(&resp, 0, sizeof(resp));
1223                 resp.cq_id = info.cq_uk_init_info.cq_id;
1224                 resp.cq_size = info.cq_uk_init_info.cq_size;
1225                 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
1226                         i40iw_pr_err("copy to user data\n");
1227                         err_code = -EPROTO;
1228                         goto cq_destroy;
1229                 }
1230         }
1231
1232         return (struct ib_cq *)iwcq;
1233
1234 cq_destroy:
1235         cq_wq_destroy(iwdev, cq);
1236 cq_free_resources:
1237         cq_free_resources(iwdev, iwcq);
1238 error:
1239         kfree(iwcq);
1240         return ERR_PTR(err_code);
1241 }
1242
1243 /**
1244  * i40iw_get_user_access - get hw access from IB access
1245  * @acc: IB access to return hw access
1246  */
1247 static inline u16 i40iw_get_user_access(int acc)
1248 {
1249         u16 access = 0;
1250
1251         access |= (acc & IB_ACCESS_LOCAL_WRITE) ? I40IW_ACCESS_FLAGS_LOCALWRITE : 0;
1252         access |= (acc & IB_ACCESS_REMOTE_WRITE) ? I40IW_ACCESS_FLAGS_REMOTEWRITE : 0;
1253         access |= (acc & IB_ACCESS_REMOTE_READ) ? I40IW_ACCESS_FLAGS_REMOTEREAD : 0;
1254         access |= (acc & IB_ACCESS_MW_BIND) ? I40IW_ACCESS_FLAGS_BIND_WINDOW : 0;
1255         return access;
1256 }
1257
1258 /**
1259  * i40iw_free_stag - free stag resource
1260  * @iwdev: iwarp device
1261  * @stag: stag to free
1262  */
1263 static void i40iw_free_stag(struct i40iw_device *iwdev, u32 stag)
1264 {
1265         u32 stag_idx;
1266
1267         stag_idx = (stag & iwdev->mr_stagmask) >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1268         i40iw_free_resource(iwdev, iwdev->allocated_mrs, stag_idx);
1269 }
1270
1271 /**
1272  * i40iw_create_stag - create random stag
1273  * @iwdev: iwarp device
1274  */
1275 static u32 i40iw_create_stag(struct i40iw_device *iwdev)
1276 {
1277         u32 stag = 0;
1278         u32 stag_index = 0;
1279         u32 next_stag_index;
1280         u32 driver_key;
1281         u32 random;
1282         u8 consumer_key;
1283         int ret;
1284
1285         get_random_bytes(&random, sizeof(random));
1286         consumer_key = (u8)random;
1287
1288         driver_key = random & ~iwdev->mr_stagmask;
1289         next_stag_index = (random & iwdev->mr_stagmask) >> 8;
1290         next_stag_index %= iwdev->max_mr;
1291
1292         ret = i40iw_alloc_resource(iwdev,
1293                                    iwdev->allocated_mrs, iwdev->max_mr,
1294                                    &stag_index, &next_stag_index);
1295         if (!ret) {
1296                 stag = stag_index << I40IW_CQPSQ_STAG_IDX_SHIFT;
1297                 stag |= driver_key;
1298                 stag += (u32)consumer_key;
1299         }
1300         return stag;
1301 }
1302
1303 /**
1304  * i40iw_next_pbl_addr - Get next pbl address
1305  * @palloc: Poiner to allocated pbles
1306  * @pbl: pointer to a pble
1307  * @pinfo: info pointer
1308  * @idx: index
1309  */
1310 static inline u64 *i40iw_next_pbl_addr(struct i40iw_pble_alloc *palloc,
1311                                        u64 *pbl,
1312                                        struct i40iw_pble_info **pinfo,
1313                                        u32 *idx)
1314 {
1315         *idx += 1;
1316         if ((!(*pinfo)) || (*idx != (*pinfo)->cnt))
1317                 return ++pbl;
1318         *idx = 0;
1319         (*pinfo)++;
1320         return (u64 *)(*pinfo)->addr;
1321 }
1322
1323 /**
1324  * i40iw_copy_user_pgaddrs - copy user page address to pble's os locally
1325  * @iwmr: iwmr for IB's user page addresses
1326  * @pbl: ple pointer to save 1 level or 0 level pble
1327  * @level: indicated level 0, 1 or 2
1328  */
1329 static void i40iw_copy_user_pgaddrs(struct i40iw_mr *iwmr,
1330                                     u64 *pbl,
1331                                     enum i40iw_pble_level level)
1332 {
1333         struct ib_umem *region = iwmr->region;
1334         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1335         int chunk_pages, entry, pg_shift, i;
1336         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1337         struct i40iw_pble_info *pinfo;
1338         struct scatterlist *sg;
1339         u32 idx = 0;
1340
1341         pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf;
1342         pg_shift = ffs(region->page_size) - 1;
1343         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
1344                 chunk_pages = sg_dma_len(sg) >> pg_shift;
1345                 if ((iwmr->type == IW_MEMREG_TYPE_QP) &&
1346                     !iwpbl->qp_mr.sq_page)
1347                         iwpbl->qp_mr.sq_page = sg_page(sg);
1348                 for (i = 0; i < chunk_pages; i++) {
1349                         *pbl = cpu_to_le64(sg_dma_address(sg) + region->page_size * i);
1350                         pbl = i40iw_next_pbl_addr(palloc, pbl, &pinfo, &idx);
1351                 }
1352         }
1353 }
1354
1355 /**
1356  * i40iw_setup_pbles - copy user pg address to pble's
1357  * @iwdev: iwarp device
1358  * @iwmr: mr pointer for this memory registration
1359  * @use_pbles: flag if to use pble's or memory (level 0)
1360  */
1361 static int i40iw_setup_pbles(struct i40iw_device *iwdev,
1362                              struct i40iw_mr *iwmr,
1363                              bool use_pbles)
1364 {
1365         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1366         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1367         struct i40iw_pble_info *pinfo;
1368         u64 *pbl;
1369         enum i40iw_status_code status;
1370         enum i40iw_pble_level level = I40IW_LEVEL_1;
1371
1372         if (!use_pbles && (iwmr->page_cnt > MAX_SAVE_PAGE_ADDRS))
1373                 return -ENOMEM;
1374
1375         if (use_pbles) {
1376                 mutex_lock(&iwdev->pbl_mutex);
1377                 status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
1378                 mutex_unlock(&iwdev->pbl_mutex);
1379                 if (status)
1380                         return -ENOMEM;
1381
1382                 iwpbl->pbl_allocated = true;
1383                 level = palloc->level;
1384                 pinfo = (level == I40IW_LEVEL_1) ? &palloc->level1 : palloc->level2.leaf;
1385                 pbl = (u64 *)pinfo->addr;
1386         } else {
1387                 pbl = iwmr->pgaddrmem;
1388         }
1389
1390         i40iw_copy_user_pgaddrs(iwmr, pbl, level);
1391         return 0;
1392 }
1393
1394 /**
1395  * i40iw_handle_q_mem - handle memory for qp and cq
1396  * @iwdev: iwarp device
1397  * @req: information for q memory management
1398  * @iwpbl: pble struct
1399  * @use_pbles: flag to use pble
1400  */
1401 static int i40iw_handle_q_mem(struct i40iw_device *iwdev,
1402                               struct i40iw_mem_reg_req *req,
1403                               struct i40iw_pbl *iwpbl,
1404                               bool use_pbles)
1405 {
1406         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1407         struct i40iw_mr *iwmr = iwpbl->iwmr;
1408         struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
1409         struct i40iw_cq_mr *cqmr = &iwpbl->cq_mr;
1410         struct i40iw_hmc_pble *hmc_p;
1411         u64 *arr = iwmr->pgaddrmem;
1412         int err;
1413         int total;
1414
1415         total = req->sq_pages + req->rq_pages + req->cq_pages;
1416
1417         err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1418         if (err)
1419                 return err;
1420         if (use_pbles && (palloc->level != I40IW_LEVEL_1)) {
1421                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1422                 iwpbl->pbl_allocated = false;
1423                 return -ENOMEM;
1424         }
1425
1426         if (use_pbles)
1427                 arr = (u64 *)palloc->level1.addr;
1428         if (req->reg_type == IW_MEMREG_TYPE_QP) {
1429                 hmc_p = &qpmr->sq_pbl;
1430                 qpmr->shadow = (dma_addr_t)arr[total];
1431                 if (use_pbles) {
1432                         hmc_p->idx = palloc->level1.idx;
1433                         hmc_p = &qpmr->rq_pbl;
1434                         hmc_p->idx = palloc->level1.idx + req->sq_pages;
1435                 } else {
1436                         hmc_p->addr = arr[0];
1437                         hmc_p = &qpmr->rq_pbl;
1438                         hmc_p->addr = arr[1];
1439                 }
1440         } else {                /* CQ */
1441                 hmc_p = &cqmr->cq_pbl;
1442                 cqmr->shadow = (dma_addr_t)arr[total];
1443                 if (use_pbles)
1444                         hmc_p->idx = palloc->level1.idx;
1445                 else
1446                         hmc_p->addr = arr[0];
1447         }
1448         return err;
1449 }
1450
1451 /**
1452  * i40iw_hw_alloc_stag - cqp command to allocate stag
1453  * @iwdev: iwarp device
1454  * @iwmr: iwarp mr pointer
1455  */
1456 static int i40iw_hw_alloc_stag(struct i40iw_device *iwdev, struct i40iw_mr *iwmr)
1457 {
1458         struct i40iw_allocate_stag_info *info;
1459         struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
1460         enum i40iw_status_code status;
1461         int err = 0;
1462         struct i40iw_cqp_request *cqp_request;
1463         struct cqp_commands_info *cqp_info;
1464
1465         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1466         if (!cqp_request)
1467                 return -ENOMEM;
1468
1469         cqp_info = &cqp_request->info;
1470         info = &cqp_info->in.u.alloc_stag.info;
1471         memset(info, 0, sizeof(*info));
1472         info->page_size = PAGE_SIZE;
1473         info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1474         info->pd_id = iwpd->sc_pd.pd_id;
1475         info->total_len = iwmr->length;
1476         info->remote_access = true;
1477         cqp_info->cqp_cmd = OP_ALLOC_STAG;
1478         cqp_info->post_sq = 1;
1479         cqp_info->in.u.alloc_stag.dev = &iwdev->sc_dev;
1480         cqp_info->in.u.alloc_stag.scratch = (uintptr_t)cqp_request;
1481
1482         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1483         if (status) {
1484                 err = -ENOMEM;
1485                 i40iw_pr_err("CQP-OP MR Reg fail");
1486         }
1487         return err;
1488 }
1489
1490 /**
1491  * i40iw_alloc_mr - register stag for fast memory registration
1492  * @pd: ibpd pointer
1493  * @mr_type: memory for stag registrion
1494  * @max_num_sg: man number of pages
1495  */
1496 static struct ib_mr *i40iw_alloc_mr(struct ib_pd *pd,
1497                                     enum ib_mr_type mr_type,
1498                                     u32 max_num_sg)
1499 {
1500         struct i40iw_pd *iwpd = to_iwpd(pd);
1501         struct i40iw_device *iwdev = to_iwdev(pd->device);
1502         struct i40iw_pble_alloc *palloc;
1503         struct i40iw_pbl *iwpbl;
1504         struct i40iw_mr *iwmr;
1505         enum i40iw_status_code status;
1506         u32 stag;
1507         int err_code = -ENOMEM;
1508
1509         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1510         if (!iwmr)
1511                 return ERR_PTR(-ENOMEM);
1512
1513         stag = i40iw_create_stag(iwdev);
1514         if (!stag) {
1515                 err_code = -EOVERFLOW;
1516                 goto err;
1517         }
1518         iwmr->stag = stag;
1519         iwmr->ibmr.rkey = stag;
1520         iwmr->ibmr.lkey = stag;
1521         iwmr->ibmr.pd = pd;
1522         iwmr->ibmr.device = pd->device;
1523         iwpbl = &iwmr->iwpbl;
1524         iwpbl->iwmr = iwmr;
1525         iwmr->type = IW_MEMREG_TYPE_MEM;
1526         palloc = &iwpbl->pble_alloc;
1527         iwmr->page_cnt = max_num_sg;
1528         mutex_lock(&iwdev->pbl_mutex);
1529         status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
1530         mutex_unlock(&iwdev->pbl_mutex);
1531         if (status)
1532                 goto err1;
1533
1534         if (palloc->level != I40IW_LEVEL_1)
1535                 goto err2;
1536         err_code = i40iw_hw_alloc_stag(iwdev, iwmr);
1537         if (err_code)
1538                 goto err2;
1539         iwpbl->pbl_allocated = true;
1540         i40iw_add_pdusecount(iwpd);
1541         return &iwmr->ibmr;
1542 err2:
1543         i40iw_free_pble(iwdev->pble_rsrc, palloc);
1544 err1:
1545         i40iw_free_stag(iwdev, stag);
1546 err:
1547         kfree(iwmr);
1548         return ERR_PTR(err_code);
1549 }
1550
1551 /**
1552  * i40iw_set_page - populate pbl list for fmr
1553  * @ibmr: ib mem to access iwarp mr pointer
1554  * @addr: page dma address fro pbl list
1555  */
1556 static int i40iw_set_page(struct ib_mr *ibmr, u64 addr)
1557 {
1558         struct i40iw_mr *iwmr = to_iwmr(ibmr);
1559         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1560         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1561         u64 *pbl;
1562
1563         if (unlikely(iwmr->npages == iwmr->page_cnt))
1564                 return -ENOMEM;
1565
1566         pbl = (u64 *)palloc->level1.addr;
1567         pbl[iwmr->npages++] = cpu_to_le64(addr);
1568         return 0;
1569 }
1570
1571 /**
1572  * i40iw_map_mr_sg - map of sg list for fmr
1573  * @ibmr: ib mem to access iwarp mr pointer
1574  * @sg: scatter gather list for fmr
1575  * @sg_nents: number of sg pages
1576  */
1577 static int i40iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
1578                            int sg_nents, unsigned int *sg_offset)
1579 {
1580         struct i40iw_mr *iwmr = to_iwmr(ibmr);
1581
1582         iwmr->npages = 0;
1583         return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, i40iw_set_page);
1584 }
1585
1586 /**
1587  * i40iw_drain_sq - drain the send queue
1588  * @ibqp: ib qp pointer
1589  */
1590 static void i40iw_drain_sq(struct ib_qp *ibqp)
1591 {
1592         struct i40iw_qp *iwqp = to_iwqp(ibqp);
1593         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
1594
1595         if (I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring))
1596                 wait_for_completion(&iwqp->sq_drained);
1597 }
1598
1599 /**
1600  * i40iw_drain_rq - drain the receive queue
1601  * @ibqp: ib qp pointer
1602  */
1603 static void i40iw_drain_rq(struct ib_qp *ibqp)
1604 {
1605         struct i40iw_qp *iwqp = to_iwqp(ibqp);
1606         struct i40iw_sc_qp *qp = &iwqp->sc_qp;
1607
1608         if (I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring))
1609                 wait_for_completion(&iwqp->rq_drained);
1610 }
1611
1612 /**
1613  * i40iw_hwreg_mr - send cqp command for memory registration
1614  * @iwdev: iwarp device
1615  * @iwmr: iwarp mr pointer
1616  * @access: access for MR
1617  */
1618 static int i40iw_hwreg_mr(struct i40iw_device *iwdev,
1619                           struct i40iw_mr *iwmr,
1620                           u16 access)
1621 {
1622         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1623         struct i40iw_reg_ns_stag_info *stag_info;
1624         struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
1625         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1626         enum i40iw_status_code status;
1627         int err = 0;
1628         struct i40iw_cqp_request *cqp_request;
1629         struct cqp_commands_info *cqp_info;
1630
1631         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1632         if (!cqp_request)
1633                 return -ENOMEM;
1634
1635         cqp_info = &cqp_request->info;
1636         stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
1637         memset(stag_info, 0, sizeof(*stag_info));
1638         stag_info->va = (void *)(unsigned long)iwpbl->user_base;
1639         stag_info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
1640         stag_info->stag_key = (u8)iwmr->stag;
1641         stag_info->total_len = iwmr->length;
1642         stag_info->access_rights = access;
1643         stag_info->pd_id = iwpd->sc_pd.pd_id;
1644         stag_info->addr_type = I40IW_ADDR_TYPE_VA_BASED;
1645
1646         if (iwmr->page_cnt > 1) {
1647                 if (palloc->level == I40IW_LEVEL_1) {
1648                         stag_info->first_pm_pbl_index = palloc->level1.idx;
1649                         stag_info->chunk_size = 1;
1650                 } else {
1651                         stag_info->first_pm_pbl_index = palloc->level2.root.idx;
1652                         stag_info->chunk_size = 3;
1653                 }
1654         } else {
1655                 stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
1656         }
1657
1658         cqp_info->cqp_cmd = OP_MR_REG_NON_SHARED;
1659         cqp_info->post_sq = 1;
1660         cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->sc_dev;
1661         cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
1662
1663         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1664         if (status) {
1665                 err = -ENOMEM;
1666                 i40iw_pr_err("CQP-OP MR Reg fail");
1667         }
1668         return err;
1669 }
1670
1671 /**
1672  * i40iw_reg_user_mr - Register a user memory region
1673  * @pd: ptr of pd
1674  * @start: virtual start address
1675  * @length: length of mr
1676  * @virt: virtual address
1677  * @acc: access of mr
1678  * @udata: user data
1679  */
1680 static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
1681                                        u64 start,
1682                                        u64 length,
1683                                        u64 virt,
1684                                        int acc,
1685                                        struct ib_udata *udata)
1686 {
1687         struct i40iw_pd *iwpd = to_iwpd(pd);
1688         struct i40iw_device *iwdev = to_iwdev(pd->device);
1689         struct i40iw_ucontext *ucontext;
1690         struct i40iw_pble_alloc *palloc;
1691         struct i40iw_pbl *iwpbl;
1692         struct i40iw_mr *iwmr;
1693         struct ib_umem *region;
1694         struct i40iw_mem_reg_req req;
1695         u64 pbl_depth = 0;
1696         u32 stag = 0;
1697         u16 access;
1698         u64 region_length;
1699         bool use_pbles = false;
1700         unsigned long flags;
1701         int err = -ENOSYS;
1702
1703         if (length > I40IW_MAX_MR_SIZE)
1704                 return ERR_PTR(-EINVAL);
1705         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
1706         if (IS_ERR(region))
1707                 return (struct ib_mr *)region;
1708
1709         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
1710                 ib_umem_release(region);
1711                 return ERR_PTR(-EFAULT);
1712         }
1713
1714         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1715         if (!iwmr) {
1716                 ib_umem_release(region);
1717                 return ERR_PTR(-ENOMEM);
1718         }
1719
1720         iwpbl = &iwmr->iwpbl;
1721         iwpbl->iwmr = iwmr;
1722         iwmr->region = region;
1723         iwmr->ibmr.pd = pd;
1724         iwmr->ibmr.device = pd->device;
1725         ucontext = to_ucontext(pd->uobject->context);
1726         region_length = region->length + (start & 0xfff);
1727         pbl_depth = region_length >> 12;
1728         pbl_depth += (region_length & (4096 - 1)) ? 1 : 0;
1729         iwmr->length = region->length;
1730
1731         iwpbl->user_base = virt;
1732         palloc = &iwpbl->pble_alloc;
1733
1734         iwmr->type = req.reg_type;
1735         iwmr->page_cnt = (u32)pbl_depth;
1736
1737         switch (req.reg_type) {
1738         case IW_MEMREG_TYPE_QP:
1739                 use_pbles = ((req.sq_pages + req.rq_pages) > 2);
1740                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1741                 if (err)
1742                         goto error;
1743                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1744                 list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
1745                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1746                 break;
1747         case IW_MEMREG_TYPE_CQ:
1748                 use_pbles = (req.cq_pages > 1);
1749                 err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
1750                 if (err)
1751                         goto error;
1752
1753                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1754                 list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
1755                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1756                 break;
1757         case IW_MEMREG_TYPE_MEM:
1758                 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1759
1760                 use_pbles = (iwmr->page_cnt != 1);
1761                 err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
1762                 if (err)
1763                         goto error;
1764
1765                 access |= i40iw_get_user_access(acc);
1766                 stag = i40iw_create_stag(iwdev);
1767                 if (!stag) {
1768                         err = -ENOMEM;
1769                         goto error;
1770                 }
1771
1772                 iwmr->stag = stag;
1773                 iwmr->ibmr.rkey = stag;
1774                 iwmr->ibmr.lkey = stag;
1775
1776                 err = i40iw_hwreg_mr(iwdev, iwmr, access);
1777                 if (err) {
1778                         i40iw_free_stag(iwdev, stag);
1779                         goto error;
1780                 }
1781                 break;
1782         default:
1783                 goto error;
1784         }
1785
1786         iwmr->type = req.reg_type;
1787         if (req.reg_type == IW_MEMREG_TYPE_MEM)
1788                 i40iw_add_pdusecount(iwpd);
1789         return &iwmr->ibmr;
1790
1791 error:
1792         if (palloc->level != I40IW_LEVEL_0)
1793                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1794         ib_umem_release(region);
1795         kfree(iwmr);
1796         return ERR_PTR(err);
1797 }
1798
1799 /**
1800  * i40iw_reg_phys_mr - register kernel physical memory
1801  * @pd: ibpd pointer
1802  * @addr: physical address of memory to register
1803  * @size: size of memory to register
1804  * @acc: Access rights
1805  * @iova_start: start of virtual address for physical buffers
1806  */
1807 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd,
1808                                 u64 addr,
1809                                 u64 size,
1810                                 int acc,
1811                                 u64 *iova_start)
1812 {
1813         struct i40iw_pd *iwpd = to_iwpd(pd);
1814         struct i40iw_device *iwdev = to_iwdev(pd->device);
1815         struct i40iw_pbl *iwpbl;
1816         struct i40iw_mr *iwmr;
1817         enum i40iw_status_code status;
1818         u32 stag;
1819         u16 access = I40IW_ACCESS_FLAGS_LOCALREAD;
1820         int ret;
1821
1822         iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
1823         if (!iwmr)
1824                 return ERR_PTR(-ENOMEM);
1825         iwmr->ibmr.pd = pd;
1826         iwmr->ibmr.device = pd->device;
1827         iwpbl = &iwmr->iwpbl;
1828         iwpbl->iwmr = iwmr;
1829         iwmr->type = IW_MEMREG_TYPE_MEM;
1830         iwpbl->user_base = *iova_start;
1831         stag = i40iw_create_stag(iwdev);
1832         if (!stag) {
1833                 ret = -EOVERFLOW;
1834                 goto err;
1835         }
1836         access |= i40iw_get_user_access(acc);
1837         iwmr->stag = stag;
1838         iwmr->ibmr.rkey = stag;
1839         iwmr->ibmr.lkey = stag;
1840         iwmr->page_cnt = 1;
1841         iwmr->pgaddrmem[0]  = addr;
1842         iwmr->length = size;
1843         status = i40iw_hwreg_mr(iwdev, iwmr, access);
1844         if (status) {
1845                 i40iw_free_stag(iwdev, stag);
1846                 ret = -ENOMEM;
1847                 goto err;
1848         }
1849
1850         i40iw_add_pdusecount(iwpd);
1851         return &iwmr->ibmr;
1852  err:
1853         kfree(iwmr);
1854         return ERR_PTR(ret);
1855 }
1856
1857 /**
1858  * i40iw_get_dma_mr - register physical mem
1859  * @pd: ptr of pd
1860  * @acc: access for memory
1861  */
1862 static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc)
1863 {
1864         u64 kva = 0;
1865
1866         return i40iw_reg_phys_mr(pd, 0, 0, acc, &kva);
1867 }
1868
1869 /**
1870  * i40iw_del_mem_list - Deleting pbl list entries for CQ/QP
1871  * @iwmr: iwmr for IB's user page addresses
1872  * @ucontext: ptr to user context
1873  */
1874 static void i40iw_del_memlist(struct i40iw_mr *iwmr,
1875                               struct i40iw_ucontext *ucontext)
1876 {
1877         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1878         unsigned long flags;
1879
1880         switch (iwmr->type) {
1881         case IW_MEMREG_TYPE_CQ:
1882                 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
1883                 if (!list_empty(&ucontext->cq_reg_mem_list))
1884                         list_del(&iwpbl->list);
1885                 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
1886                 break;
1887         case IW_MEMREG_TYPE_QP:
1888                 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
1889                 if (!list_empty(&ucontext->qp_reg_mem_list))
1890                         list_del(&iwpbl->list);
1891                 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
1892                 break;
1893         default:
1894                 break;
1895         }
1896 }
1897
1898 /**
1899  * i40iw_dereg_mr - deregister mr
1900  * @ib_mr: mr ptr for dereg
1901  */
1902 static int i40iw_dereg_mr(struct ib_mr *ib_mr)
1903 {
1904         struct ib_pd *ibpd = ib_mr->pd;
1905         struct i40iw_pd *iwpd = to_iwpd(ibpd);
1906         struct i40iw_mr *iwmr = to_iwmr(ib_mr);
1907         struct i40iw_device *iwdev = to_iwdev(ib_mr->device);
1908         enum i40iw_status_code status;
1909         struct i40iw_dealloc_stag_info *info;
1910         struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
1911         struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
1912         struct i40iw_cqp_request *cqp_request;
1913         struct cqp_commands_info *cqp_info;
1914         u32 stag_idx;
1915
1916         if (iwmr->region)
1917                 ib_umem_release(iwmr->region);
1918
1919         if (iwmr->type != IW_MEMREG_TYPE_MEM) {
1920                 if (ibpd->uobject) {
1921                         struct i40iw_ucontext *ucontext;
1922
1923                         ucontext = to_ucontext(ibpd->uobject->context);
1924                         i40iw_del_memlist(iwmr, ucontext);
1925                 }
1926                 if (iwpbl->pbl_allocated)
1927                         i40iw_free_pble(iwdev->pble_rsrc, palloc);
1928                 kfree(iwpbl->iwmr);
1929                 iwpbl->iwmr = NULL;
1930                 return 0;
1931         }
1932
1933         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1934         if (!cqp_request)
1935                 return -ENOMEM;
1936
1937         cqp_info = &cqp_request->info;
1938         info = &cqp_info->in.u.dealloc_stag.info;
1939         memset(info, 0, sizeof(*info));
1940
1941         info->pd_id = cpu_to_le32(iwpd->sc_pd.pd_id & 0x00007fff);
1942         info->stag_idx = RS_64_1(ib_mr->rkey, I40IW_CQPSQ_STAG_IDX_SHIFT);
1943         stag_idx = info->stag_idx;
1944         info->mr = true;
1945         if (iwpbl->pbl_allocated)
1946                 info->dealloc_pbl = true;
1947
1948         cqp_info->cqp_cmd = OP_DEALLOC_STAG;
1949         cqp_info->post_sq = 1;
1950         cqp_info->in.u.dealloc_stag.dev = &iwdev->sc_dev;
1951         cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
1952         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1953         if (status)
1954                 i40iw_pr_err("CQP-OP dealloc failed for stag_idx = 0x%x\n", stag_idx);
1955         i40iw_rem_pdusecount(iwpd, iwdev);
1956         i40iw_free_stag(iwdev, iwmr->stag);
1957         if (iwpbl->pbl_allocated)
1958                 i40iw_free_pble(iwdev->pble_rsrc, palloc);
1959         kfree(iwmr);
1960         return 0;
1961 }
1962
1963 /**
1964  * i40iw_show_rev
1965  */
1966 static ssize_t i40iw_show_rev(struct device *dev,
1967                               struct device_attribute *attr, char *buf)
1968 {
1969         struct i40iw_ib_device *iwibdev = container_of(dev,
1970                                                        struct i40iw_ib_device,
1971                                                        ibdev.dev);
1972         u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev;
1973
1974         return sprintf(buf, "%x\n", hw_rev);
1975 }
1976
1977 /**
1978  * i40iw_show_hca
1979  */
1980 static ssize_t i40iw_show_hca(struct device *dev,
1981                               struct device_attribute *attr, char *buf)
1982 {
1983         return sprintf(buf, "I40IW\n");
1984 }
1985
1986 /**
1987  * i40iw_show_board
1988  */
1989 static ssize_t i40iw_show_board(struct device *dev,
1990                                 struct device_attribute *attr,
1991                                 char *buf)
1992 {
1993         return sprintf(buf, "%.*s\n", 32, "I40IW Board ID");
1994 }
1995
1996 static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL);
1997 static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL);
1998 static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL);
1999
2000 static struct device_attribute *i40iw_dev_attributes[] = {
2001         &dev_attr_hw_rev,
2002         &dev_attr_hca_type,
2003         &dev_attr_board_id
2004 };
2005
2006 /**
2007  * i40iw_copy_sg_list - copy sg list for qp
2008  * @sg_list: copied into sg_list
2009  * @sgl: copy from sgl
2010  * @num_sges: count of sg entries
2011  */
2012 static void i40iw_copy_sg_list(struct i40iw_sge *sg_list, struct ib_sge *sgl, int num_sges)
2013 {
2014         unsigned int i;
2015
2016         for (i = 0; (i < num_sges) && (i < I40IW_MAX_WQ_FRAGMENT_COUNT); i++) {
2017                 sg_list[i].tag_off = sgl[i].addr;
2018                 sg_list[i].len = sgl[i].length;
2019                 sg_list[i].stag = sgl[i].lkey;
2020         }
2021 }
2022
2023 /**
2024  * i40iw_post_send -  kernel application wr
2025  * @ibqp: qp ptr for wr
2026  * @ib_wr: work request ptr
2027  * @bad_wr: return of bad wr if err
2028  */
2029 static int i40iw_post_send(struct ib_qp *ibqp,
2030                            struct ib_send_wr *ib_wr,
2031                            struct ib_send_wr **bad_wr)
2032 {
2033         struct i40iw_qp *iwqp;
2034         struct i40iw_qp_uk *ukqp;
2035         struct i40iw_post_sq_info info;
2036         enum i40iw_status_code ret;
2037         int err = 0;
2038         unsigned long flags;
2039         bool inv_stag;
2040
2041         iwqp = (struct i40iw_qp *)ibqp;
2042         ukqp = &iwqp->sc_qp.qp_uk;
2043
2044         spin_lock_irqsave(&iwqp->lock, flags);
2045         while (ib_wr) {
2046                 inv_stag = false;
2047                 memset(&info, 0, sizeof(info));
2048                 info.wr_id = (u64)(ib_wr->wr_id);
2049                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
2050                         info.signaled = true;
2051                 if (ib_wr->send_flags & IB_SEND_FENCE)
2052                         info.read_fence = true;
2053
2054                 switch (ib_wr->opcode) {
2055                 case IB_WR_SEND:
2056                         /* fall-through */
2057                 case IB_WR_SEND_WITH_INV:
2058                         if (ib_wr->opcode == IB_WR_SEND) {
2059                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
2060                                         info.op_type = I40IW_OP_TYPE_SEND_SOL;
2061                                 else
2062                                         info.op_type = I40IW_OP_TYPE_SEND;
2063                         } else {
2064                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
2065                                         info.op_type = I40IW_OP_TYPE_SEND_SOL_INV;
2066                                 else
2067                                         info.op_type = I40IW_OP_TYPE_SEND_INV;
2068                         }
2069
2070                         if (ib_wr->send_flags & IB_SEND_INLINE) {
2071                                 info.op.inline_send.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
2072                                 info.op.inline_send.len = ib_wr->sg_list[0].length;
2073                                 ret = ukqp->ops.iw_inline_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false);
2074                         } else {
2075                                 info.op.send.num_sges = ib_wr->num_sge;
2076                                 info.op.send.sg_list = (struct i40iw_sge *)ib_wr->sg_list;
2077                                 ret = ukqp->ops.iw_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false);
2078                         }
2079
2080                         if (ret) {
2081                                 if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2082                                         err = -ENOMEM;
2083                                 else
2084                                         err = -EINVAL;
2085                         }
2086                         break;
2087                 case IB_WR_RDMA_WRITE:
2088                         info.op_type = I40IW_OP_TYPE_RDMA_WRITE;
2089
2090                         if (ib_wr->send_flags & IB_SEND_INLINE) {
2091                                 info.op.inline_rdma_write.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
2092                                 info.op.inline_rdma_write.len = ib_wr->sg_list[0].length;
2093                                 info.op.inline_rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
2094                                 info.op.inline_rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
2095                                 info.op.inline_rdma_write.rem_addr.len = ib_wr->sg_list->length;
2096                                 ret = ukqp->ops.iw_inline_rdma_write(ukqp, &info, false);
2097                         } else {
2098                                 info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list;
2099                                 info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
2100                                 info.op.rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
2101                                 info.op.rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
2102                                 info.op.rdma_write.rem_addr.len = ib_wr->sg_list->length;
2103                                 ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
2104                         }
2105
2106                         if (ret) {
2107                                 if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2108                                         err = -ENOMEM;
2109                                 else
2110                                         err = -EINVAL;
2111                         }
2112                         break;
2113                 case IB_WR_RDMA_READ_WITH_INV:
2114                         inv_stag = true;
2115                         /* fall-through*/
2116                 case IB_WR_RDMA_READ:
2117                         if (ib_wr->num_sge > I40IW_MAX_SGE_RD) {
2118                                 err = -EINVAL;
2119                                 break;
2120                         }
2121                         info.op_type = I40IW_OP_TYPE_RDMA_READ;
2122                         info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
2123                         info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey;
2124                         info.op.rdma_read.rem_addr.len = ib_wr->sg_list->length;
2125                         info.op.rdma_read.lo_addr.tag_off = ib_wr->sg_list->addr;
2126                         info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey;
2127                         info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length;
2128                         ret = ukqp->ops.iw_rdma_read(ukqp, &info, inv_stag, false);
2129                         if (ret) {
2130                                 if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2131                                         err = -ENOMEM;
2132                                 else
2133                                         err = -EINVAL;
2134                         }
2135                         break;
2136                 case IB_WR_LOCAL_INV:
2137                         info.op_type = I40IW_OP_TYPE_INV_STAG;
2138                         info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey;
2139                         ret = ukqp->ops.iw_stag_local_invalidate(ukqp, &info, true);
2140                         if (ret)
2141                                 err = -ENOMEM;
2142                         break;
2143                 case IB_WR_REG_MR:
2144                 {
2145                         struct i40iw_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr);
2146                         int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
2147                         int flags = reg_wr(ib_wr)->access;
2148                         struct i40iw_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc;
2149                         struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
2150                         struct i40iw_fast_reg_stag_info info;
2151
2152                         memset(&info, 0, sizeof(info));
2153                         info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD;
2154                         info.access_rights |= i40iw_get_user_access(flags);
2155                         info.stag_key = reg_wr(ib_wr)->key & 0xff;
2156                         info.stag_idx = reg_wr(ib_wr)->key >> 8;
2157                         info.wr_id = ib_wr->wr_id;
2158
2159                         info.addr_type = I40IW_ADDR_TYPE_VA_BASED;
2160                         info.va = (void *)(uintptr_t)iwmr->ibmr.iova;
2161                         info.total_len = iwmr->ibmr.length;
2162                         info.reg_addr_pa = *(u64 *)palloc->level1.addr;
2163                         info.first_pm_pbl_index = palloc->level1.idx;
2164                         info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;
2165                         info.signaled = ib_wr->send_flags & IB_SEND_SIGNALED;
2166
2167                         if (iwmr->npages > I40IW_MIN_PAGES_PER_FMR)
2168                                 info.chunk_size = 1;
2169
2170                         if (page_shift == 21)
2171                                 info.page_size = 1; /* 2M page */
2172
2173                         ret = dev->iw_priv_qp_ops->iw_mr_fast_register(&iwqp->sc_qp, &info, true);
2174                         if (ret)
2175                                 err = -ENOMEM;
2176                         break;
2177                 }
2178                 default:
2179                         err = -EINVAL;
2180                         i40iw_pr_err(" upost_send bad opcode = 0x%x\n",
2181                                      ib_wr->opcode);
2182                         break;
2183                 }
2184
2185                 if (err)
2186                         break;
2187                 ib_wr = ib_wr->next;
2188         }
2189
2190         if (err)
2191                 *bad_wr = ib_wr;
2192         else
2193                 ukqp->ops.iw_qp_post_wr(ukqp);
2194         spin_unlock_irqrestore(&iwqp->lock, flags);
2195
2196         return err;
2197 }
2198
2199 /**
2200  * i40iw_post_recv - post receive wr for kernel application
2201  * @ibqp: ib qp pointer
2202  * @ib_wr: work request for receive
2203  * @bad_wr: bad wr caused an error
2204  */
2205 static int i40iw_post_recv(struct ib_qp *ibqp,
2206                            struct ib_recv_wr *ib_wr,
2207                            struct ib_recv_wr **bad_wr)
2208 {
2209         struct i40iw_qp *iwqp;
2210         struct i40iw_qp_uk *ukqp;
2211         struct i40iw_post_rq_info post_recv;
2212         struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT];
2213         enum i40iw_status_code ret = 0;
2214         unsigned long flags;
2215         int err = 0;
2216
2217         iwqp = (struct i40iw_qp *)ibqp;
2218         ukqp = &iwqp->sc_qp.qp_uk;
2219
2220         memset(&post_recv, 0, sizeof(post_recv));
2221         spin_lock_irqsave(&iwqp->lock, flags);
2222         while (ib_wr) {
2223                 post_recv.num_sges = ib_wr->num_sge;
2224                 post_recv.wr_id = ib_wr->wr_id;
2225                 i40iw_copy_sg_list(sg_list, ib_wr->sg_list, ib_wr->num_sge);
2226                 post_recv.sg_list = sg_list;
2227                 ret = ukqp->ops.iw_post_receive(ukqp, &post_recv);
2228                 if (ret) {
2229                         i40iw_pr_err(" post_recv err %d\n", ret);
2230                         if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
2231                                 err = -ENOMEM;
2232                         else
2233                                 err = -EINVAL;
2234                         *bad_wr = ib_wr;
2235                         goto out;
2236                 }
2237                 ib_wr = ib_wr->next;
2238         }
2239  out:
2240         spin_unlock_irqrestore(&iwqp->lock, flags);
2241         return err;
2242 }
2243
2244 /**
2245  * i40iw_poll_cq - poll cq for completion (kernel apps)
2246  * @ibcq: cq to poll
2247  * @num_entries: number of entries to poll
2248  * @entry: wr of entry completed
2249  */
2250 static int i40iw_poll_cq(struct ib_cq *ibcq,
2251                          int num_entries,
2252                          struct ib_wc *entry)
2253 {
2254         struct i40iw_cq *iwcq;
2255         int cqe_count = 0;
2256         struct i40iw_cq_poll_info cq_poll_info;
2257         enum i40iw_status_code ret;
2258         struct i40iw_cq_uk *ukcq;
2259         struct i40iw_sc_qp *qp;
2260         struct i40iw_qp *iwqp;
2261         unsigned long flags;
2262
2263         iwcq = (struct i40iw_cq *)ibcq;
2264         ukcq = &iwcq->sc_cq.cq_uk;
2265
2266         spin_lock_irqsave(&iwcq->lock, flags);
2267         while (cqe_count < num_entries) {
2268                 ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info);
2269                 if (ret == I40IW_ERR_QUEUE_EMPTY) {
2270                         break;
2271                 } else if (ret == I40IW_ERR_QUEUE_DESTROYED) {
2272                         continue;
2273                 } else if (ret) {
2274                         if (!cqe_count)
2275                                 cqe_count = -1;
2276                         break;
2277                 }
2278                 entry->wc_flags = 0;
2279                 entry->wr_id = cq_poll_info.wr_id;
2280                 if (cq_poll_info.error) {
2281                         entry->status = IB_WC_WR_FLUSH_ERR;
2282                         entry->vendor_err = cq_poll_info.major_err << 16 | cq_poll_info.minor_err;
2283                 } else {
2284                         entry->status = IB_WC_SUCCESS;
2285                 }
2286
2287                 switch (cq_poll_info.op_type) {
2288                 case I40IW_OP_TYPE_RDMA_WRITE:
2289                         entry->opcode = IB_WC_RDMA_WRITE;
2290                         break;
2291                 case I40IW_OP_TYPE_RDMA_READ_INV_STAG:
2292                 case I40IW_OP_TYPE_RDMA_READ:
2293                         entry->opcode = IB_WC_RDMA_READ;
2294                         break;
2295                 case I40IW_OP_TYPE_SEND_SOL:
2296                 case I40IW_OP_TYPE_SEND_SOL_INV:
2297                 case I40IW_OP_TYPE_SEND_INV:
2298                 case I40IW_OP_TYPE_SEND:
2299                         entry->opcode = IB_WC_SEND;
2300                         break;
2301                 case I40IW_OP_TYPE_REC:
2302                         entry->opcode = IB_WC_RECV;
2303                         break;
2304                 default:
2305                         entry->opcode = IB_WC_RECV;
2306                         break;
2307                 }
2308
2309                 entry->ex.imm_data = 0;
2310                 qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle;
2311                 entry->qp = (struct ib_qp *)qp->back_qp;
2312                 entry->src_qp = cq_poll_info.qp_id;
2313                 iwqp = (struct i40iw_qp *)qp->back_qp;
2314                 if (iwqp->iwarp_state > I40IW_QP_STATE_RTS) {
2315                         if (!I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring))
2316                                 complete(&iwqp->sq_drained);
2317                         if (!I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring))
2318                                 complete(&iwqp->rq_drained);
2319                 }
2320                 entry->byte_len = cq_poll_info.bytes_xfered;
2321                 entry++;
2322                 cqe_count++;
2323         }
2324         spin_unlock_irqrestore(&iwcq->lock, flags);
2325         return cqe_count;
2326 }
2327
2328 /**
2329  * i40iw_req_notify_cq - arm cq kernel application
2330  * @ibcq: cq to arm
2331  * @notify_flags: notofication flags
2332  */
2333 static int i40iw_req_notify_cq(struct ib_cq *ibcq,
2334                                enum ib_cq_notify_flags notify_flags)
2335 {
2336         struct i40iw_cq *iwcq;
2337         struct i40iw_cq_uk *ukcq;
2338         unsigned long flags;
2339         enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_EVENT;
2340
2341         iwcq = (struct i40iw_cq *)ibcq;
2342         ukcq = &iwcq->sc_cq.cq_uk;
2343         if (notify_flags == IB_CQ_SOLICITED)
2344                 cq_notify = IW_CQ_COMPL_SOLICITED;
2345         spin_lock_irqsave(&iwcq->lock, flags);
2346         ukcq->ops.iw_cq_request_notification(ukcq, cq_notify);
2347         spin_unlock_irqrestore(&iwcq->lock, flags);
2348         return 0;
2349 }
2350
2351 /**
2352  * i40iw_port_immutable - return port's immutable data
2353  * @ibdev: ib dev struct
2354  * @port_num: port number
2355  * @immutable: immutable data for the port return
2356  */
2357 static int i40iw_port_immutable(struct ib_device *ibdev, u8 port_num,
2358                                 struct ib_port_immutable *immutable)
2359 {
2360         struct ib_port_attr attr;
2361         int err;
2362
2363         err = i40iw_query_port(ibdev, port_num, &attr);
2364
2365         if (err)
2366                 return err;
2367
2368         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2369         immutable->gid_tbl_len = attr.gid_tbl_len;
2370         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
2371
2372         return 0;
2373 }
2374
2375 static const char * const i40iw_hw_stat_names[] = {
2376         // 32bit names
2377         [I40IW_HW_STAT_INDEX_IP4RXDISCARD] = "ip4InDiscards",
2378         [I40IW_HW_STAT_INDEX_IP4RXTRUNC] = "ip4InTruncatedPkts",
2379         [I40IW_HW_STAT_INDEX_IP4TXNOROUTE] = "ip4OutNoRoutes",
2380         [I40IW_HW_STAT_INDEX_IP6RXDISCARD] = "ip6InDiscards",
2381         [I40IW_HW_STAT_INDEX_IP6RXTRUNC] = "ip6InTruncatedPkts",
2382         [I40IW_HW_STAT_INDEX_IP6TXNOROUTE] = "ip6OutNoRoutes",
2383         [I40IW_HW_STAT_INDEX_TCPRTXSEG] = "tcpRetransSegs",
2384         [I40IW_HW_STAT_INDEX_TCPRXOPTERR] = "tcpInOptErrors",
2385         [I40IW_HW_STAT_INDEX_TCPRXPROTOERR] = "tcpInProtoErrors",
2386         // 64bit names
2387         [I40IW_HW_STAT_INDEX_IP4RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2388                 "ip4InOctets",
2389         [I40IW_HW_STAT_INDEX_IP4RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2390                 "ip4InPkts",
2391         [I40IW_HW_STAT_INDEX_IP4RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2392                 "ip4InReasmRqd",
2393         [I40IW_HW_STAT_INDEX_IP4RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2394                 "ip4InMcastPkts",
2395         [I40IW_HW_STAT_INDEX_IP4TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2396                 "ip4OutOctets",
2397         [I40IW_HW_STAT_INDEX_IP4TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2398                 "ip4OutPkts",
2399         [I40IW_HW_STAT_INDEX_IP4TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2400                 "ip4OutSegRqd",
2401         [I40IW_HW_STAT_INDEX_IP4TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2402                 "ip4OutMcastPkts",
2403         [I40IW_HW_STAT_INDEX_IP6RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2404                 "ip6InOctets",
2405         [I40IW_HW_STAT_INDEX_IP6RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2406                 "ip6InPkts",
2407         [I40IW_HW_STAT_INDEX_IP6RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2408                 "ip6InReasmRqd",
2409         [I40IW_HW_STAT_INDEX_IP6RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2410                 "ip6InMcastPkts",
2411         [I40IW_HW_STAT_INDEX_IP6TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
2412                 "ip6OutOctets",
2413         [I40IW_HW_STAT_INDEX_IP6TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2414                 "ip6OutPkts",
2415         [I40IW_HW_STAT_INDEX_IP6TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
2416                 "ip6OutSegRqd",
2417         [I40IW_HW_STAT_INDEX_IP6TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
2418                 "ip6OutMcastPkts",
2419         [I40IW_HW_STAT_INDEX_TCPRXSEGS + I40IW_HW_STAT_INDEX_MAX_32] =
2420                 "tcpInSegs",
2421         [I40IW_HW_STAT_INDEX_TCPTXSEG + I40IW_HW_STAT_INDEX_MAX_32] =
2422                 "tcpOutSegs",
2423         [I40IW_HW_STAT_INDEX_RDMARXRDS + I40IW_HW_STAT_INDEX_MAX_32] =
2424                 "iwInRdmaReads",
2425         [I40IW_HW_STAT_INDEX_RDMARXSNDS + I40IW_HW_STAT_INDEX_MAX_32] =
2426                 "iwInRdmaSends",
2427         [I40IW_HW_STAT_INDEX_RDMARXWRS + I40IW_HW_STAT_INDEX_MAX_32] =
2428                 "iwInRdmaWrites",
2429         [I40IW_HW_STAT_INDEX_RDMATXRDS + I40IW_HW_STAT_INDEX_MAX_32] =
2430                 "iwOutRdmaReads",
2431         [I40IW_HW_STAT_INDEX_RDMATXSNDS + I40IW_HW_STAT_INDEX_MAX_32] =
2432                 "iwOutRdmaSends",
2433         [I40IW_HW_STAT_INDEX_RDMATXWRS + I40IW_HW_STAT_INDEX_MAX_32] =
2434                 "iwOutRdmaWrites",
2435         [I40IW_HW_STAT_INDEX_RDMAVBND + I40IW_HW_STAT_INDEX_MAX_32] =
2436                 "iwRdmaBnd",
2437         [I40IW_HW_STAT_INDEX_RDMAVINV + I40IW_HW_STAT_INDEX_MAX_32] =
2438                 "iwRdmaInv"
2439 };
2440
2441 static void i40iw_get_dev_fw_str(struct ib_device *dev, char *str,
2442                                  size_t str_len)
2443 {
2444         u32 firmware_version = I40IW_FW_VERSION;
2445
2446         snprintf(str, str_len, "%u.%u", firmware_version,
2447                        (firmware_version & 0x000000ff));
2448 }
2449
2450 /**
2451  * i40iw_alloc_hw_stats - Allocate a hw stats structure
2452  * @ibdev: device pointer from stack
2453  * @port_num: port number
2454  */
2455 static struct rdma_hw_stats *i40iw_alloc_hw_stats(struct ib_device *ibdev,
2456                                                   u8 port_num)
2457 {
2458         struct i40iw_device *iwdev = to_iwdev(ibdev);
2459         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
2460         int num_counters = I40IW_HW_STAT_INDEX_MAX_32 +
2461                 I40IW_HW_STAT_INDEX_MAX_64;
2462         unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN;
2463
2464         BUILD_BUG_ON(ARRAY_SIZE(i40iw_hw_stat_names) !=
2465                      (I40IW_HW_STAT_INDEX_MAX_32 +
2466                       I40IW_HW_STAT_INDEX_MAX_64));
2467
2468         /*
2469          * PFs get the default update lifespan, but VFs only update once
2470          * per second
2471          */
2472         if (!dev->is_pf)
2473                 lifespan = 1000;
2474         return rdma_alloc_hw_stats_struct(i40iw_hw_stat_names, num_counters,
2475                                           lifespan);
2476 }
2477
2478 /**
2479  * i40iw_get_hw_stats - Populates the rdma_hw_stats structure
2480  * @ibdev: device pointer from stack
2481  * @stats: stats pointer from stack
2482  * @port_num: port number
2483  * @index: which hw counter the stack is requesting we update
2484  */
2485 static int i40iw_get_hw_stats(struct ib_device *ibdev,
2486                               struct rdma_hw_stats *stats,
2487                               u8 port_num, int index)
2488 {
2489         struct i40iw_device *iwdev = to_iwdev(ibdev);
2490         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
2491         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
2492         struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats;
2493         unsigned long flags;
2494
2495         if (dev->is_pf) {
2496                 spin_lock_irqsave(&devstat->stats_lock, flags);
2497                 devstat->ops.iw_hw_stat_read_all(devstat,
2498                         &devstat->hw_stats);
2499                 spin_unlock_irqrestore(&devstat->stats_lock, flags);
2500         } else {
2501                 if (i40iw_vchnl_vf_get_pe_stats(dev, &devstat->hw_stats))
2502                         return -ENOSYS;
2503         }
2504
2505         memcpy(&stats->value[0], &hw_stats, sizeof(*hw_stats));
2506
2507         return stats->num_counters;
2508 }
2509
2510 /**
2511  * i40iw_query_gid - Query port GID
2512  * @ibdev: device pointer from stack
2513  * @port: port number
2514  * @index: Entry index
2515  * @gid: Global ID
2516  */
2517 static int i40iw_query_gid(struct ib_device *ibdev,
2518                            u8 port,
2519                            int index,
2520                            union ib_gid *gid)
2521 {
2522         struct i40iw_device *iwdev = to_iwdev(ibdev);
2523
2524         memset(gid->raw, 0, sizeof(gid->raw));
2525         ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
2526         return 0;
2527 }
2528
2529 /**
2530  * i40iw_modify_port  Modify port properties
2531  * @ibdev: device pointer from stack
2532  * @port: port number
2533  * @port_modify_mask: mask for port modifications
2534  * @props: port properties
2535  */
2536 static int i40iw_modify_port(struct ib_device *ibdev,
2537                              u8 port,
2538                              int port_modify_mask,
2539                              struct ib_port_modify *props)
2540 {
2541         return -ENOSYS;
2542 }
2543
2544 /**
2545  * i40iw_query_pkey - Query partition key
2546  * @ibdev: device pointer from stack
2547  * @port: port number
2548  * @index: index of pkey
2549  * @pkey: pointer to store the pkey
2550  */
2551 static int i40iw_query_pkey(struct ib_device *ibdev,
2552                             u8 port,
2553                             u16 index,
2554                             u16 *pkey)
2555 {
2556         *pkey = 0;
2557         return 0;
2558 }
2559
2560 /**
2561  * i40iw_create_ah - create address handle
2562  * @ibpd: ptr of pd
2563  * @ah_attr: address handle attributes
2564  */
2565 static struct ib_ah *i40iw_create_ah(struct ib_pd *ibpd,
2566                                      struct ib_ah_attr *attr)
2567 {
2568         return ERR_PTR(-ENOSYS);
2569 }
2570
2571 /**
2572  * i40iw_destroy_ah - Destroy address handle
2573  * @ah: pointer to address handle
2574  */
2575 static int i40iw_destroy_ah(struct ib_ah *ah)
2576 {
2577         return -ENOSYS;
2578 }
2579
2580 /**
2581  * i40iw_init_rdma_device - initialization of iwarp device
2582  * @iwdev: iwarp device
2583  */
2584 static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev)
2585 {
2586         struct i40iw_ib_device *iwibdev;
2587         struct net_device *netdev = iwdev->netdev;
2588         struct pci_dev *pcidev = (struct pci_dev *)iwdev->hw.dev_context;
2589
2590         iwibdev = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev));
2591         if (!iwibdev) {
2592                 i40iw_pr_err("iwdev == NULL\n");
2593                 return NULL;
2594         }
2595         strlcpy(iwibdev->ibdev.name, "i40iw%d", IB_DEVICE_NAME_MAX);
2596         iwibdev->ibdev.owner = THIS_MODULE;
2597         iwdev->iwibdev = iwibdev;
2598         iwibdev->iwdev = iwdev;
2599
2600         iwibdev->ibdev.node_type = RDMA_NODE_RNIC;
2601         ether_addr_copy((u8 *)&iwibdev->ibdev.node_guid, netdev->dev_addr);
2602
2603         iwibdev->ibdev.uverbs_cmd_mask =
2604             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
2605             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
2606             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
2607             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
2608             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
2609             (1ull << IB_USER_VERBS_CMD_REG_MR) |
2610             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
2611             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2612             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
2613             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
2614             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
2615             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
2616             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
2617             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
2618             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
2619             (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
2620             (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
2621             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
2622             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
2623             (1ull << IB_USER_VERBS_CMD_POST_SEND);
2624         iwibdev->ibdev.phys_port_cnt = 1;
2625         iwibdev->ibdev.num_comp_vectors = 1;
2626         iwibdev->ibdev.dma_device = &pcidev->dev;
2627         iwibdev->ibdev.dev.parent = &pcidev->dev;
2628         iwibdev->ibdev.query_port = i40iw_query_port;
2629         iwibdev->ibdev.modify_port = i40iw_modify_port;
2630         iwibdev->ibdev.query_pkey = i40iw_query_pkey;
2631         iwibdev->ibdev.query_gid = i40iw_query_gid;
2632         iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext;
2633         iwibdev->ibdev.dealloc_ucontext = i40iw_dealloc_ucontext;
2634         iwibdev->ibdev.mmap = i40iw_mmap;
2635         iwibdev->ibdev.alloc_pd = i40iw_alloc_pd;
2636         iwibdev->ibdev.dealloc_pd = i40iw_dealloc_pd;
2637         iwibdev->ibdev.create_qp = i40iw_create_qp;
2638         iwibdev->ibdev.modify_qp = i40iw_modify_qp;
2639         iwibdev->ibdev.query_qp = i40iw_query_qp;
2640         iwibdev->ibdev.destroy_qp = i40iw_destroy_qp;
2641         iwibdev->ibdev.create_cq = i40iw_create_cq;
2642         iwibdev->ibdev.destroy_cq = i40iw_destroy_cq;
2643         iwibdev->ibdev.get_dma_mr = i40iw_get_dma_mr;
2644         iwibdev->ibdev.reg_user_mr = i40iw_reg_user_mr;
2645         iwibdev->ibdev.dereg_mr = i40iw_dereg_mr;
2646         iwibdev->ibdev.alloc_hw_stats = i40iw_alloc_hw_stats;
2647         iwibdev->ibdev.get_hw_stats = i40iw_get_hw_stats;
2648         iwibdev->ibdev.query_device = i40iw_query_device;
2649         iwibdev->ibdev.create_ah = i40iw_create_ah;
2650         iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
2651         iwibdev->ibdev.drain_sq = i40iw_drain_sq;
2652         iwibdev->ibdev.drain_rq = i40iw_drain_rq;
2653         iwibdev->ibdev.alloc_mr = i40iw_alloc_mr;
2654         iwibdev->ibdev.map_mr_sg = i40iw_map_mr_sg;
2655         iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
2656         if (!iwibdev->ibdev.iwcm) {
2657                 ib_dealloc_device(&iwibdev->ibdev);
2658                 i40iw_pr_err("iwcm == NULL\n");
2659                 return NULL;
2660         }
2661
2662         iwibdev->ibdev.iwcm->add_ref = i40iw_add_ref;
2663         iwibdev->ibdev.iwcm->rem_ref = i40iw_rem_ref;
2664         iwibdev->ibdev.iwcm->get_qp = i40iw_get_qp;
2665         iwibdev->ibdev.iwcm->connect = i40iw_connect;
2666         iwibdev->ibdev.iwcm->accept = i40iw_accept;
2667         iwibdev->ibdev.iwcm->reject = i40iw_reject;
2668         iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen;
2669         iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen;
2670         memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name,
2671                sizeof(iwibdev->ibdev.iwcm->ifname));
2672         iwibdev->ibdev.get_port_immutable   = i40iw_port_immutable;
2673         iwibdev->ibdev.get_dev_fw_str       = i40iw_get_dev_fw_str;
2674         iwibdev->ibdev.poll_cq = i40iw_poll_cq;
2675         iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq;
2676         iwibdev->ibdev.post_send = i40iw_post_send;
2677         iwibdev->ibdev.post_recv = i40iw_post_recv;
2678
2679         return iwibdev;
2680 }
2681
2682 /**
2683  * i40iw_port_ibevent - indicate port event
2684  * @iwdev: iwarp device
2685  */
2686 void i40iw_port_ibevent(struct i40iw_device *iwdev)
2687 {
2688         struct i40iw_ib_device *iwibdev = iwdev->iwibdev;
2689         struct ib_event event;
2690
2691         event.device = &iwibdev->ibdev;
2692         event.element.port_num = 1;
2693         event.event = iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2694         ib_dispatch_event(&event);
2695 }
2696
2697 /**
2698  * i40iw_unregister_rdma_device - unregister of iwarp from IB
2699  * @iwibdev: rdma device ptr
2700  */
2701 static void i40iw_unregister_rdma_device(struct i40iw_ib_device *iwibdev)
2702 {
2703         int i;
2704
2705         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i)
2706                 device_remove_file(&iwibdev->ibdev.dev,
2707                                    i40iw_dev_attributes[i]);
2708         ib_unregister_device(&iwibdev->ibdev);
2709 }
2710
2711 /**
2712  * i40iw_destroy_rdma_device - destroy rdma device and free resources
2713  * @iwibdev: IB device ptr
2714  */
2715 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev)
2716 {
2717         if (!iwibdev)
2718                 return;
2719
2720         i40iw_unregister_rdma_device(iwibdev);
2721         kfree(iwibdev->ibdev.iwcm);
2722         iwibdev->ibdev.iwcm = NULL;
2723         ib_dealloc_device(&iwibdev->ibdev);
2724 }
2725
2726 /**
2727  * i40iw_register_rdma_device - register iwarp device to IB
2728  * @iwdev: iwarp device
2729  */
2730 int i40iw_register_rdma_device(struct i40iw_device *iwdev)
2731 {
2732         int i, ret;
2733         struct i40iw_ib_device *iwibdev;
2734
2735         iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
2736         if (!iwdev->iwibdev)
2737                 return -ENOMEM;
2738         iwibdev = iwdev->iwibdev;
2739
2740         ret = ib_register_device(&iwibdev->ibdev, NULL);
2741         if (ret)
2742                 goto error;
2743
2744         for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) {
2745                 ret =
2746                     device_create_file(&iwibdev->ibdev.dev,
2747                                        i40iw_dev_attributes[i]);
2748                 if (ret) {
2749                         while (i > 0) {
2750                                 i--;
2751                                 device_remove_file(&iwibdev->ibdev.dev, i40iw_dev_attributes[i]);
2752                         }
2753                         ib_unregister_device(&iwibdev->ibdev);
2754                         goto error;
2755                 }
2756         }
2757         return 0;
2758 error:
2759         kfree(iwdev->iwibdev->ibdev.iwcm);
2760         iwdev->iwibdev->ibdev.iwcm = NULL;
2761         ib_dealloc_device(&iwdev->iwibdev->ibdev);
2762         return ret;
2763 }