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